public void Ctor_ThatBuildsNestedContext_CopiesProperties()
{
// Arrange
CustomersModelWithInheritance model = new CustomersModelWithInheritance();
ODataSerializerContext context = new ODataSerializerContext
{
EntitySet = model.Customers,
MetadataLevel = ODataMetadataLevel.FullMetadata,
Model = model.Model,
Path = new ODataPath(),
Request = new HttpRequestMessage(),
RootElementName = "somename",
SelectExpandClause = new SelectExpandClause(new SelectItem[0], allSelected: true),
SkipExpensiveAvailabilityChecks = true,
Url = new UrlHelper()
};
EntityInstanceContext entity = new EntityInstanceContext { SerializerContext = context };
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
IEdmNavigationProperty navProp = model.Customer.NavigationProperties().First();
// Act
ODataSerializerContext nestedContext = new ODataSerializerContext(entity, selectExpand, navProp);
// Assert
Assert.Equal(context.MetadataLevel, nestedContext.MetadataLevel);
Assert.Same(context.Model, nestedContext.Model);
Assert.Same(context.Path, nestedContext.Path);
Assert.Same(context.Request, nestedContext.Request);
Assert.Equal(context.RootElementName, nestedContext.RootElementName);
Assert.Equal(context.SkipExpensiveAvailabilityChecks, nestedContext.SkipExpensiveAvailabilityChecks);
Assert.Same(context.Url, nestedContext.Url);
}
private static void ValidateDepth(SelectExpandClause selectExpand, int maxDepth)
{
// do a DFS to see if there is any node that is too deep.
Stack<Tuple<int, SelectExpandClause>> nodesToVisit = new Stack<Tuple<int, SelectExpandClause>>();
nodesToVisit.Push(Tuple.Create(0, selectExpand));
while (nodesToVisit.Count > 0)
{
Tuple<int, SelectExpandClause> tuple = nodesToVisit.Pop();
int currentDepth = tuple.Item1;
SelectExpandClause currentNode = tuple.Item2;
if (currentNode.Expansion != null)
{
IEnumerable<ExpandItem> expandItems = currentNode.Expansion.ExpandItems;
if (expandItems.Any() && currentDepth == maxDepth)
{
throw new ODataException(
Error.Format(SRResources.MaxExpandDepthExceeded, maxDepth, "MaxExpansionDepth"));
}
IEnumerable<SelectExpandClause> children = expandItems.Select(i => i.SelectExpandOption);
foreach (SelectExpandClause child in children)
{
nodesToVisit.Push(Tuple.Create(currentDepth + 1, child));
}
}
}
}
public void Ctor_ForNestedContext_ThrowsArgumentNull_Entity()
{
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
IEdmNavigationProperty navProp = new Mock<IEdmNavigationProperty>().Object;
Assert.ThrowsArgumentNull(
() => new ODataSerializerContext(entity: null, selectExpandClause: selectExpand, navigationProperty: navProp), "entity");
}
public void Ctor_ThatBuildsNestedContext_InitializesRightValues()
{
// Arrange
CustomersModelWithInheritance model = new CustomersModelWithInheritance();
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
IEdmNavigationProperty navProp = model.Customer.NavigationProperties().First();
ODataSerializerContext context = new ODataSerializerContext { EntitySet = model.Customers, Model = model.Model };
EntityInstanceContext entity = new EntityInstanceContext { SerializerContext = context };
// Act
ODataSerializerContext nestedContext = new ODataSerializerContext(entity, selectExpand, navProp);
// Assert
Assert.Same(entity, nestedContext.ExpandedEntity);
Assert.Same(navProp, nestedContext.NavigationProperty);
Assert.Same(selectExpand, nestedContext.SelectExpandClause);
Assert.Same(model.Orders, nestedContext.EntitySet);
}
/// <summary>
/// Creates a new instance of the <see cref="SelectExpandNode"/> class describing the set of structural properties,
/// navigation properties, and actions to select and expand for the given <paramref name="selectExpandClause"/>.
/// </summary>
/// <param name="selectExpandClause">The parsed $select and $expand query options.</param>
/// <param name="entityType">The entity type of the entry that would be written.</param>
/// <param name="model">The <see cref="IEdmModel"/> that contains the given entity type.</param>
public SelectExpandNode(SelectExpandClause selectExpandClause, IEdmEntityTypeReference entityType, IEdmModel model)
: this()
{
if (entityType == null)
{
throw Error.ArgumentNull("entityType");
}
if (model == null)
{
throw Error.ArgumentNull("model");
}
HashSet<IEdmStructuralProperty> allStructuralProperties = new HashSet<IEdmStructuralProperty>(entityType.StructuralProperties());
HashSet<IEdmNavigationProperty> allNavigationProperties = new HashSet<IEdmNavigationProperty>(entityType.NavigationProperties());
HashSet<IEdmFunctionImport> allActions = new HashSet<IEdmFunctionImport>(model.GetAvailableProcedures(entityType.EntityDefinition()));
if (selectExpandClause == null)
{
SelectedStructuralProperties = allStructuralProperties;
SelectedNavigationProperties = allNavigationProperties;
SelectedActions = allActions;
}
else
{
if (selectExpandClause.AllSelected)
{
SelectedStructuralProperties = allStructuralProperties;
SelectedNavigationProperties = allNavigationProperties;
SelectedActions = allActions;
}
else
{
BuildSelections(selectExpandClause, allStructuralProperties, allNavigationProperties, allActions);
}
BuildExpansions(selectExpandClause, allNavigationProperties);
// remove expanded navigation properties from the selected navigation properties.
SelectedNavigationProperties.ExceptWith(ExpandedNavigationProperties.Keys);
}
}
/// <summary>
/// Builds the <see cref="SelectExpandNode"/> describing the set of structural properties and navigation properties and actions to select
/// and navigation properties to expand while writing an entry of type <paramref name="entityType"/> for the given
/// <paramref name="selectExpandClause"/>.
/// </summary>
/// <param name="selectExpandClause">The parsed $select and $expand query options.</param>
/// <param name="entityType">The entity type of the entry that would be written.</param>
/// <param name="model">The <see cref="IEdmModel"/> that contains the given entity type.</param>
/// <returns>The built <see cref="SelectExpandNode"/>.</returns>
public static SelectExpandNode BuildSelectExpandNode(SelectExpandClause selectExpandClause, IEdmEntityTypeReference entityType, IEdmModel model)
{
if (entityType == null)
{
throw Error.ArgumentNull("entityType");
}
if (model == null)
{
throw Error.ArgumentNull("model");
}
SelectExpandNode selectExpandNode = new SelectExpandNode();
if (selectExpandClause != null && selectExpandClause.Expansion != null)
{
selectExpandNode.BuildExpansions(selectExpandClause.Expansion, entityType);
}
selectExpandNode.BuildSelections(selectExpandClause == null ? null : selectExpandClause.Selection, entityType, model);
// remove expanded navigation properties from the selected navigation properties.
IEnumerable<IEdmNavigationProperty> expandedNavigationProperties = selectExpandNode.ExpandedNavigationProperties.Keys;
selectExpandNode.SelectedNavigationProperties.ExceptWith(expandedNavigationProperties);
return selectExpandNode;
}
private static void ValidateDepth(SelectExpandClause selectExpand, int maxDepth)
{
// do a DFS to see if there is any node that is too deep.
Stack<Tuple<int, SelectExpandClause>> nodesToVisit = new Stack<Tuple<int, SelectExpandClause>>();
nodesToVisit.Push(Tuple.Create(0, selectExpand));
while (nodesToVisit.Count > 0)
{
Tuple<int, SelectExpandClause> tuple = nodesToVisit.Pop();
int currentDepth = tuple.Item1;
SelectExpandClause currentNode = tuple.Item2;
ExpandedNavigationSelectItem[] expandItems = currentNode.SelectedItems.OfType<ExpandedNavigationSelectItem>().ToArray();
if (expandItems.Length > 0 && currentDepth == maxDepth)
{
throw new ODataException(
Error.Format(SRResources.MaxExpandDepthExceeded, maxDepth, "MaxExpansionDepth"));
}
foreach (ExpandedNavigationSelectItem expandItem in expandItems)
{
nodesToVisit.Push(Tuple.Create(currentDepth + 1, expandItem.SelectAndExpand));
}
}
}
public void ProcessLevelsCorrectly_WithNestedLevels()
{
// Arrange
var model = ODataLevelsTest.GetEdmModel();
var context = new ODataQueryContext(
model,
model.FindDeclaredType("Microsoft.AspNet.OData.Test.Routing.LevelsEntity"));
context.RequestContainer = new MockContainer();
var selectExpand = new SelectExpandQueryOption(
select: null,
expand: "Parent($expand=DerivedAncestors($levels=2);$levels=max)",
context: context);
selectExpand.LevelsMaxLiteralExpansionDepth = 4;
// Act
SelectExpandClause clause = selectExpand.ProcessLevels();
// Assert
Assert.True(clause.AllSelected);
Assert.Single(clause.SelectedItems);
// Level 1 of Parent.
var parent = Assert.IsType <ExpandedNavigationSelectItem>(clause.SelectedItems.Single());
Assert.Equal(
"Parent",
((NavigationPropertySegment)parent.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(parent.LevelsOption);
var clauseOfParent = parent.SelectAndExpand;
Assert.True(clauseOfParent.AllSelected);
Assert.Equal(2, clauseOfParent.SelectedItems.Count());
// Level 1 of DerivedAncestors.
var derivedAncestors = Assert.Single(clauseOfParent.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty.Name == "DerivedAncestors"));
Assert.Null(derivedAncestors.LevelsOption);
var clauseOfDerivedAncestors = derivedAncestors.SelectAndExpand;
Assert.True(clauseOfDerivedAncestors.AllSelected);
Assert.Single(clauseOfDerivedAncestors.SelectedItems);
// Level 2 of DerivedAncestors.
derivedAncestors = Assert.IsType <ExpandedNavigationSelectItem>(clauseOfDerivedAncestors.SelectedItems.Single());
Assert.Equal(
"DerivedAncestors",
((NavigationPropertySegment)derivedAncestors.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(derivedAncestors.LevelsOption);
clauseOfDerivedAncestors = derivedAncestors.SelectAndExpand;
Assert.True(clauseOfDerivedAncestors.AllSelected);
Assert.Empty(clauseOfDerivedAncestors.SelectedItems);
// Level 2 of Parent.
parent = Assert.Single(clauseOfParent.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty.Name == "Parent"));
Assert.Null(parent.LevelsOption);
clauseOfParent = parent.SelectAndExpand;
Assert.True(clauseOfParent.AllSelected);
Assert.Single(clauseOfParent.SelectedItems);
// Level 1 of DerivedAncestors.
derivedAncestors = Assert.Single(clauseOfParent.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty.Name == "DerivedAncestors"));
Assert.Null(derivedAncestors.LevelsOption);
clauseOfDerivedAncestors = derivedAncestors.SelectAndExpand;
Assert.True(clauseOfDerivedAncestors.AllSelected);
Assert.Single(clauseOfDerivedAncestors.SelectedItems);
// Level 2 of DerivedAncestors.
derivedAncestors = Assert.IsType <ExpandedNavigationSelectItem>(clauseOfDerivedAncestors.SelectedItems.Single());
Assert.Equal(
"DerivedAncestors",
((NavigationPropertySegment)derivedAncestors.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(derivedAncestors.LevelsOption);
clauseOfDerivedAncestors = derivedAncestors.SelectAndExpand;
Assert.True(clauseOfDerivedAncestors.AllSelected);
Assert.Empty(clauseOfDerivedAncestors.SelectedItems);
}
private void GetAutoSelectExpandItems(IEdmEntityType baseEntityType, IEdmModel model, IEdmNavigationSource navigationSource, bool isAllSelected,
ModelBoundQuerySettings modelBoundQuerySettings, int depth, out List <SelectItem> autoSelectItems, out List <SelectItem> autoExpandItems)
{
autoSelectItems = new List <SelectItem>();
autoExpandItems = new List <SelectItem>();
if (baseEntityType == null)
{
return;
}
IList <SelectModelPath> autoSelectProperties = model.GetAutoSelectPaths(baseEntityType, null, modelBoundQuerySettings);
foreach (var autoSelectProperty in autoSelectProperties)
{
ODataSelectPath odataSelectPath = BuildSelectPath(autoSelectProperty, navigationSource);
PathSelectItem pathSelectItem = new PathSelectItem(odataSelectPath);
autoSelectItems.Add(pathSelectItem);
}
depth--;
if (depth < 0)
{
return;
}
IList <ExpandModelPath> autoExpandNavigationProperties = model.GetAutoExpandPaths(baseEntityType, null, !isAllSelected, modelBoundQuerySettings);
foreach (ExpandModelPath itemPath in autoExpandNavigationProperties)
{
string navigationPath = itemPath.NavigationPropertyPath;
IEdmNavigationProperty navigationProperty = itemPath.Navigation;
IEdmNavigationSource currentEdmNavigationSource;
if (navigationPath != null)
{
currentEdmNavigationSource = navigationSource.FindNavigationTarget(navigationProperty);
}
else
{
currentEdmNavigationSource = navigationSource.FindNavigationTarget(navigationProperty, new EdmPathExpression(navigationPath));
}
if (currentEdmNavigationSource != null)
{
ODataExpandPath expandPath = BuildExpandPath(itemPath, navigationSource, currentEdmNavigationSource);
SelectExpandClause selectExpandClause = new SelectExpandClause(new List <SelectItem>(), true);
ExpandedNavigationSelectItem item = new ExpandedNavigationSelectItem(expandPath, currentEdmNavigationSource, selectExpandClause);
modelBoundQuerySettings = model.GetModelBoundQuerySettings(navigationProperty, navigationProperty.ToEntityType());
List <SelectItem> nestedSelectItems;
List <SelectItem> nestedExpandItems;
int maxExpandDepth = GetMaxExpandDepth(modelBoundQuerySettings, navigationProperty.Name);
if (maxExpandDepth != 0 && maxExpandDepth < depth)
{
depth = maxExpandDepth;
}
GetAutoSelectExpandItems(
currentEdmNavigationSource.EntityType(),
model,
item.NavigationSource,
true,
modelBoundQuerySettings,
depth,
out nestedSelectItems,
out nestedExpandItems);
selectExpandClause = new SelectExpandClause(nestedSelectItems.Concat(nestedExpandItems), nestedSelectItems.Count == 0);
item = new ExpandedNavigationSelectItem(expandPath, currentEdmNavigationSource, selectExpandClause);
autoExpandItems.Add(item);
if (!isAllSelected || autoSelectProperties.Any())
{
PathSelectItem pathSelectItem = new PathSelectItem(new ODataSelectPath(expandPath));
autoExpandItems.Add(pathSelectItem);
}
}
}
}
/// <summary>
/// Creates a new instance of the <see cref="SelectExpandNode"/> class describing the set of structural properties,
/// nested properties, navigation properties, and actions to select and expand for the given <paramref name="selectExpandClause"/>.
/// </summary>
/// <param name="selectExpandClause">The parsed $select and $expand query options.</param>
/// <param name="structuredType">The structural type of the resource that would be written.</param>
/// <param name="model">The <see cref="IEdmModel"/> that contains the given structural type.</param>
public SelectExpandNode(SelectExpandClause selectExpandClause, IEdmStructuredType structuredType, IEdmModel model)
: this()
{
if (structuredType == null)
{
throw Error.ArgumentNull("structuredType");
}
if (model == null)
{
throw Error.ArgumentNull("model");
}
// So far, it includes all properties of primitive, enum and collection of them
HashSet<IEdmStructuralProperty> allStructuralProperties = new HashSet<IEdmStructuralProperty>();
// So far, it includes all properties of complex and collection of complex
HashSet<IEdmStructuralProperty> allComplexStructuralProperties = new HashSet<IEdmStructuralProperty>();
GetStructuralProperties(structuredType, allStructuralProperties, allComplexStructuralProperties);
// So far, it includes all navigation properties
HashSet<IEdmNavigationProperty> allNavigationProperties;
HashSet<IEdmAction> allActions;
HashSet<IEdmFunction> allFunctions;
IEdmEntityType entityType = structuredType as IEdmEntityType;
if (entityType != null)
{
allNavigationProperties = new HashSet<IEdmNavigationProperty>(entityType.NavigationProperties());
allActions = new HashSet<IEdmAction>(model.GetAvailableActions(entityType));
allFunctions = new HashSet<IEdmFunction>(model.GetAvailableFunctions(entityType));
}
else
{
allNavigationProperties = new HashSet<IEdmNavigationProperty>();
allActions = new HashSet<IEdmAction>();
allFunctions = new HashSet<IEdmFunction>();
}
if (selectExpandClause == null)
{
SelectedStructuralProperties = allStructuralProperties;
SelectedComplexProperties = allComplexStructuralProperties;
SelectedNavigationProperties = allNavigationProperties;
SelectedActions = allActions;
SelectedFunctions = allFunctions;
SelectAllDynamicProperties = true;
}
else
{
if (selectExpandClause.AllSelected)
{
SelectedStructuralProperties = allStructuralProperties;
SelectedComplexProperties = allComplexStructuralProperties;
SelectedNavigationProperties = allNavigationProperties;
SelectedActions = allActions;
SelectedFunctions = allFunctions;
SelectAllDynamicProperties = true;
}
else
{
// Explicitly set SelectAllDynamicProperties as false, while the BuildSelections method will set it as true
// if it meets the select all condition.
SelectAllDynamicProperties = false;
BuildSelections(selectExpandClause, allStructuralProperties, allComplexStructuralProperties, allNavigationProperties, allActions, allFunctions);
}
BuildExpansions(selectExpandClause, allNavigationProperties);
// remove expanded navigation properties from the selected navigation properties.
SelectedNavigationProperties.ExceptWith(ExpandedProperties.Keys);
}
}
private void BuildExpansions(SelectExpandClause selectExpandClause, HashSet<IEdmNavigationProperty> allNavigationProperties)
{
foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
{
ExpandedNavigationSelectItem expandItem = selectItem as ExpandedNavigationSelectItem;
if (expandItem != null)
{
ValidatePathIsSupported(expandItem.PathToNavigationProperty);
NavigationPropertySegment navigationSegment = (NavigationPropertySegment)expandItem.PathToNavigationProperty.LastSegment;
IEdmNavigationProperty navigationProperty = navigationSegment.NavigationProperty;
if (allNavigationProperties.Contains(navigationProperty))
{
ExpandedNavigationProperties.Add(navigationProperty, expandItem.SelectAndExpand);
}
}
}
}
// Generates the expression
// source => new Wrapper { Instance = source, Container = new PropertyContainer { ..expanded properties.. } }
private Expression ProjectElement(Expression source, SelectExpandClause selectExpandClause, IEdmEntityType entityType, IEdmNavigationSource navigationSource)
{
Contract.Assert(source != null);
Type elementType = source.Type;
Type wrapperType = typeof(SelectExpandWrapper <>).MakeGenericType(elementType);
List <MemberAssignment> wrapperTypeMemberAssignments = new List <MemberAssignment>();
PropertyInfo wrapperProperty;
bool isInstancePropertySet = false;
bool isTypeNamePropertySet = false;
bool isContainerPropertySet = false;
// Initialize property 'ModelID' on the wrapper class.
// source = new Wrapper { ModelID = 'some-guid-id' }
wrapperProperty = wrapperType.GetProperty("ModelID");
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, Expression.Constant(_modelID)));
if (IsSelectAll(selectExpandClause))
{
// Initialize property 'Instance' on the wrapper class
// source => new Wrapper { Instance = element }
wrapperProperty = wrapperType.GetProperty("Instance");
Contract.Assert(wrapperProperty != null);
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, source));
isInstancePropertySet = true;
}
else
{
// Initialize property 'TypeName' on the wrapper class as we don't have the instance.
Expression typeName = CreateTypeNameExpression(source, entityType, _model);
if (typeName != null)
{
wrapperProperty = wrapperType.GetProperty("TypeName");
Contract.Assert(wrapperProperty != null);
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, typeName));
isTypeNamePropertySet = true;
}
}
// Initialize the property 'Container' on the wrapper class
// source => new Wrapper { Container = new PropertyContainer { .... } }
if (selectExpandClause != null)
{
Dictionary <IEdmNavigationProperty, ExpandedNavigationSelectItem> propertiesToExpand = GetPropertiesToExpandInQuery(selectExpandClause);
ISet <IEdmStructuralProperty> autoSelectedProperties;
ISet <IEdmStructuralProperty> propertiesToInclude = GetPropertiesToIncludeInQuery(selectExpandClause, entityType, navigationSource, _model, out autoSelectedProperties);
bool isSelectingOpenTypeSegments = GetSelectsOpenTypeSegments(selectExpandClause, entityType);
if (propertiesToExpand.Count > 0 || propertiesToInclude.Count > 0 || autoSelectedProperties.Count > 0)
{
wrapperProperty = wrapperType.GetProperty("Container");
Contract.Assert(wrapperProperty != null);
Expression propertyContainerCreation =
BuildPropertyContainer(entityType, source, propertiesToExpand, propertiesToInclude, autoSelectedProperties, isSelectingOpenTypeSegments);
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, propertyContainerCreation));
isContainerPropertySet = true;
}
}
Type wrapperGenericType = GetWrapperGenericType(isInstancePropertySet, isTypeNamePropertySet, isContainerPropertySet);
wrapperType = wrapperGenericType.MakeGenericType(elementType);
return(Expression.MemberInit(Expression.New(wrapperType), wrapperTypeMemberAssignments));
}
public void SelectProperties_OnSubPropertyWithTypeCastFromComplex_SelectsExpectedProperties()
{
// Arrange
EdmComplexType subComplexType = new EdmComplexType("NS", "CnAddress", _model.Address);
subComplexType.AddStructuralProperty("SubAddressProperty", EdmPrimitiveTypeKind.String);
subComplexType.AddUnidirectionalNavigation(new EdmNavigationPropertyInfo
{
Name = "CnAddressOrderNav",
TargetMultiplicity = EdmMultiplicity.One,
Target = _model.Order
});
_model.Model.AddElement(subComplexType);
string select = "Address/NS.CnAddress/SubAddressProperty";
string expand = "Address/NS.CnAddress/CnAddressOrderNav";
SelectExpandClause selectExpandClause = ParseSelectExpand(select, expand);
// Act
SelectExpandNode selectExpandNode = new SelectExpandNode(selectExpandClause, _model.Customer, _model.Model);
// Assert: Top Level
Assert.Null(selectExpandNode.SelectedStructuralProperties);
Assert.Null(selectExpandNode.SelectedNavigationProperties);
Assert.Null(selectExpandNode.ExpandedProperties); // Not expanded at first level
Assert.NotNull(selectExpandNode.SelectedComplexTypeProperties);
var firstLevelSelected = Assert.Single(selectExpandNode.SelectedComplexTypeProperties);
Assert.Equal("Address", firstLevelSelected.Key.Name);
Assert.NotNull(firstLevelSelected.Value);
Assert.NotNull(firstLevelSelected.Value.SelectAndExpand);
// Assert: Second Level
{
// use the base type to test
SelectExpandNode subSelectExpandNode = new SelectExpandNode(firstLevelSelected.Value.SelectAndExpand, _model.Address, _model.Model);
Assert.Null(subSelectExpandNode.SelectedStructuralProperties);
Assert.Null(subSelectExpandNode.SelectedComplexTypeProperties);
Assert.Null(subSelectExpandNode.ExpandedProperties);
Assert.Null(subSelectExpandNode.SelectedNavigationProperties);
}
{
// use the sub type to test
SelectExpandNode subSelectExpandNode = new SelectExpandNode(firstLevelSelected.Value.SelectAndExpand, subComplexType, _model.Model);
Assert.Null(subSelectExpandNode.SelectedComplexTypeProperties);
Assert.NotNull(subSelectExpandNode.SelectedStructuralProperties);
Assert.Equal("SubAddressProperty", Assert.Single(subSelectExpandNode.SelectedStructuralProperties).Name);
Assert.NotNull(subSelectExpandNode.ExpandedProperties);
var expandedProperty = Assert.Single(subSelectExpandNode.ExpandedProperties);
Assert.Equal("CnAddressOrderNav", expandedProperty.Key.Name);
Assert.NotNull(expandedProperty.Value);
Assert.NotNull(expandedProperty.Value.SelectAndExpand);
Assert.True(expandedProperty.Value.SelectAndExpand.AllSelected);
Assert.Empty(expandedProperty.Value.SelectAndExpand.SelectedItems);
}
}
public static void SnapResults(List <DeltaSnapshotEntry> results, IEnumerable entries, IEdmNavigationSource entitySource, SelectExpandClause selectExpandClause, string parentId, string relationShip)
{
foreach (object entry in entries)
{
SnapResult(results, entry, entitySource, selectExpandClause, parentId, relationShip);
}
}
public void CreateODataFeed_SetsNextPageLink_WhenWritingTruncatedCollection_ForExpandedProperties()
{
// Arrange
CustomersModelWithInheritance model = new CustomersModelWithInheritance();
IEdmCollectionTypeReference customersType = new EdmCollectionTypeReference(new EdmCollectionType(model.Customer.AsReference()), isNullable: false);
ODataFeedSerializer serializer = new ODataFeedSerializer(new DefaultODataSerializerProvider());
SelectExpandClause selectExpandClause = new SelectExpandClause(new SelectItem[0], allSelected: true);
IEdmNavigationProperty ordersProperty = model.Customer.NavigationProperties().First();
EntityInstanceContext entity = new EntityInstanceContext
{
SerializerContext = new ODataSerializerContext { EntitySet = model.Customers, Model = model.Model }
};
ODataSerializerContext nestedContext = new ODataSerializerContext(entity, selectExpandClause, ordersProperty);
TruncatedCollection<Order> orders = new TruncatedCollection<Order>(new[] { new Order(), new Order() }, pageSize: 1);
Mock<EntitySetLinkBuilderAnnotation> linkBuilder = new Mock<EntitySetLinkBuilderAnnotation>();
linkBuilder.Setup(l => l.BuildNavigationLink(entity, ordersProperty, ODataMetadataLevel.Default)).Returns(new Uri("http://navigation-link/"));
model.Model.SetEntitySetLinkBuilder(model.Customers, linkBuilder.Object);
model.Model.SetEntitySetLinkBuilder(model.Orders, new EntitySetLinkBuilderAnnotation());
// Act
ODataFeed feed = serializer.CreateODataFeed(orders, _customersType, nestedContext);
// Assert
Assert.Equal("http://navigation-link/?$skip=1", feed.NextPageLink.AbsoluteUri);
}
// Process $levels in ExpandedNavigationSelectItem.
private ExpandedNavigationSelectItem ProcessLevels(
ExpandedNavigationSelectItem expandItem,
int levelsMaxLiteralExpansionDepth,
ModelBoundQuerySettings querySettings,
out bool levelsEncounteredInExpand,
out bool isMaxLevelInExpand)
{
int level;
isMaxLevelInExpand = false;
if (expandItem.LevelsOption == null)
{
levelsEncounteredInExpand = false;
level = 1;
}
else
{
levelsEncounteredInExpand = true;
if (expandItem.LevelsOption.IsMaxLevel)
{
isMaxLevelInExpand = true;
level = levelsMaxLiteralExpansionDepth;
}
else
{
level = (int)expandItem.LevelsOption.Level;
}
}
// Do not expand when:
// 1. $levels is equal to or less than 0.
// 2. $levels value is greater than current MaxExpansionDepth
if (level <= 0 || level > levelsMaxLiteralExpansionDepth)
{
return(null);
}
ExpandedNavigationSelectItem item = null;
SelectExpandClause currentSelectExpandClause = null;
SelectExpandClause selectExpandClause = null;
bool levelsEncounteredInInnerExpand = false;
bool isMaxLevelInInnerExpand = false;
var entityType = expandItem.NavigationSource.EntityType();
IEdmNavigationProperty navigationProperty =
(expandItem.PathToNavigationProperty.LastSegment as NavigationPropertySegment).NavigationProperty;
ModelBoundQuerySettings nestQuerySettings = EdmLibHelpers.GetModelBoundQuerySettings(navigationProperty,
navigationProperty.ToEntityType(),
Context.Model);
// Try different expansion depth until expandItem.SelectAndExpand is successfully expanded
while (selectExpandClause == null && level > 0)
{
selectExpandClause = ProcessLevels(
expandItem.SelectAndExpand,
levelsMaxLiteralExpansionDepth - level,
nestQuerySettings,
out levelsEncounteredInInnerExpand,
out isMaxLevelInInnerExpand);
level--;
}
if (selectExpandClause == null)
{
return(null);
}
// Correct level value
level++;
List <SelectItem> originAutoSelectItems;
List <SelectItem> originAutoExpandItems;
int maxDepth = GetMaxExpandDepth(querySettings, navigationProperty.Name);
if (maxDepth == 0 || levelsMaxLiteralExpansionDepth > maxDepth)
{
maxDepth = levelsMaxLiteralExpansionDepth;
}
GetAutoSelectExpandItems(
entityType,
Context.Model,
expandItem.NavigationSource,
selectExpandClause.AllSelected,
nestQuerySettings,
maxDepth - 1,
out originAutoSelectItems,
out originAutoExpandItems);
if (expandItem.SelectAndExpand.SelectedItems.Any(it => it is PathSelectItem))
{
originAutoSelectItems.Clear();
}
if (level > 1)
{
RemoveSameExpandItem(navigationProperty, originAutoExpandItems);
}
List <SelectItem> autoExpandItems = new List <SelectItem>(originAutoExpandItems);
bool hasAutoSelectExpandInExpand = (originAutoSelectItems.Count() + originAutoExpandItems.Count() != 0);
bool allSelected = originAutoSelectItems.Count == 0 && selectExpandClause.AllSelected;
var typeLevelSettings = EdmLibHelpers.GetModelBoundQuerySettings(entityType, this.Context.Model, this.Context.DefaultQuerySettings);
bool allAutoSelected = (typeLevelSettings != null && typeLevelSettings.DefaultSelectType == SelectExpandType.Automatic);
while (level > 0)
{
autoExpandItems = RemoveExpandItemExceedMaxDepth(maxDepth - level, originAutoExpandItems);
if (item == null)
{
if (hasAutoSelectExpandInExpand)
{
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { }.Concat(selectExpandClause.SelectedItems)
.Concat(originAutoSelectItems).Concat(autoExpandItems),
allSelected,
allAutoSelected);
}
else
{
currentSelectExpandClause = selectExpandClause;
}
}
else if (selectExpandClause.AllSelected)
{
// Concat the processed items
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { item }.Concat(selectExpandClause.SelectedItems)
.Concat(originAutoSelectItems).Concat(autoExpandItems),
allSelected,
allAutoSelected);
}
else
{
// PathSelectItem is needed for the expanded item if AllSelected is false.
PathSelectItem pathSelectItem = new PathSelectItem(
new ODataSelectPath(expandItem.PathToNavigationProperty));
// Keep default SelectItems before expanded item to keep consistent with normal SelectExpandClause
SelectItem[] items = new SelectItem[] { item, pathSelectItem };
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { }.Concat(selectExpandClause.SelectedItems)
.Concat(items)
.Concat(originAutoSelectItems).Concat(autoExpandItems),
allSelected,
allAutoSelected);
}
// Construct a new ExpandedNavigationSelectItem with current SelectExpandClause.
item = new ExpandedNavigationSelectItem(
expandItem.PathToNavigationProperty,
expandItem.NavigationSource,
currentSelectExpandClause,
expandItem.FilterOption,
expandItem.OrderByOption,
expandItem.TopOption,
expandItem.SkipOption,
expandItem.CountOption,
expandItem.SearchOption,
null,
expandItem.ComputeOption,
expandItem.ApplyOption);
level--;
// Need expand and construct selectExpandClause every time if it is max level in inner expand
if (isMaxLevelInInnerExpand)
{
selectExpandClause = ProcessLevels(
expandItem.SelectAndExpand,
levelsMaxLiteralExpansionDepth - level,
nestQuerySettings,
out levelsEncounteredInInnerExpand,
out isMaxLevelInInnerExpand);
}
}
levelsEncounteredInExpand = levelsEncounteredInExpand || levelsEncounteredInInnerExpand || hasAutoSelectExpandInExpand;
isMaxLevelInExpand = isMaxLevelInExpand || isMaxLevelInInnerExpand;
return(item);
}
private void BuildSelections(SelectExpandClause selectExpandClause, HashSet<IEdmStructuralProperty> allStructuralProperties, HashSet<IEdmNavigationProperty> allNavigationProperties, HashSet<IEdmFunctionImport> allActions)
{
foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
{
if (selectItem is ExpandedNavigationSelectItem)
{
continue;
}
PathSelectItem pathSelectItem = selectItem as PathSelectItem;
if (pathSelectItem != null)
{
ValidatePathIsSupported(pathSelectItem.SelectedPath);
ODataPathSegment segment = pathSelectItem.SelectedPath.LastSegment;
NavigationPropertySegment navigationPropertySegment = segment as NavigationPropertySegment;
if (navigationPropertySegment != null)
{
IEdmNavigationProperty navigationProperty = navigationPropertySegment.NavigationProperty;
if (allNavigationProperties.Contains(navigationProperty))
{
SelectedNavigationProperties.Add(navigationProperty);
}
continue;
}
PropertySegment structuralPropertySegment = segment as PropertySegment;
if (structuralPropertySegment != null)
{
IEdmStructuralProperty structuralProperty = structuralPropertySegment.Property;
if (allStructuralProperties.Contains(structuralProperty))
{
SelectedStructuralProperties.Add(structuralProperty);
}
continue;
}
OperationSegment operationSegment = segment as OperationSegment;
if (operationSegment != null)
{
foreach (IEdmFunctionImport action in operationSegment.Operations)
{
if (allActions.Contains(action))
{
SelectedActions.Add(action);
}
}
continue;
}
throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, segment.GetType().Name));
}
WildcardSelectItem wildCardSelectItem = selectItem as WildcardSelectItem;
if (wildCardSelectItem != null)
{
SelectedStructuralProperties = allStructuralProperties;
SelectedNavigationProperties = allNavigationProperties;
continue;
}
ContainerQualifiedWildcardSelectItem wildCardActionSelection = selectItem as ContainerQualifiedWildcardSelectItem;
if (wildCardActionSelection != null)
{
IEnumerable<IEdmFunctionImport> actionsInThisContainer = allActions.Where(a => a.Container == wildCardActionSelection.Container);
foreach (IEdmFunctionImport action in actionsInThisContainer)
{
SelectedActions.Add(action);
}
continue;
}
throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, selectItem.GetType().Name));
}
}
public void ProjectAsWrapper_ProjectionContainsExpandedProperties()
{
// Arrange
Order order = new Order();
ExpandItem expandItem = new ExpandItem(new ODataPath(new NavigationPropertySegment(_model.Order.NavigationProperties().Single())), _model.Customers);
Expansion expansion = new Expansion(new[] { expandItem });
SelectExpandClause selectExpand = new SelectExpandClause(selection: null, expansion: expansion);
Expression source = Expression.Constant(order);
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
SelectExpandWrapper<Order> projectedOrder = Expression.Lambda(projection).Compile().DynamicInvoke() as SelectExpandWrapper<Order>;
Assert.NotNull(projectedOrder);
Assert.Contains("Customer", projectedOrder.Container.ToDictionary().Keys);
}
/// <summary>
/// Build a property visitor to visit the select tree and decorate a SelectExpandClause
/// </summary>
/// <param name="model">The model used for binding.</param>
/// <param name="edmType">The entity type that the $select is being applied to.</param>
/// <param name="maxDepth">the maximum recursive depth.</param>
/// <param name="expandClauseToDecorate">The already built expand clause to decorate</param>
/// <param name="resolver">Resolver for uri parser.</param>
public SelectPropertyVisitor(IEdmModel model, IEdmStructuredType edmType, int maxDepth, SelectExpandClause expandClauseToDecorate, ODataUriResolver resolver)
{
this.model = model;
this.edmType = edmType;
this.maxDepth = maxDepth;
this.expandClauseToDecorate = expandClauseToDecorate;
this.resolver = resolver ?? ODataUriResolver.Default;
}
// Generates the expression
// source => new Wrapper { Instance = source, Container = new PropertyContainer { ..expanded properties.. } }
private Expression ProjectElement(Expression source, SelectExpandClause selectExpandClause, IEdmEntityType entityType)
{
Contract.Assert(source != null);
Type wrapperType = typeof(SelectExpandWrapper<>).MakeGenericType(source.Type);
List<MemberAssignment> wrapperTypeMemberAssignments = new List<MemberAssignment>();
PropertyInfo wrapperProperty;
// Initialize property 'ModelID' on the wrapper class.
// source = new Wrapper { ModelID = 'some-guid-id' }
wrapperProperty = wrapperType.GetProperty("ModelID");
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, Expression.Constant(_modelID)));
if (IsSelectAll(selectExpandClause))
{
// Initialize property 'Instance' on the wrapper class
// source => new Wrapper { Instance = element }
wrapperProperty = wrapperType.GetProperty("Instance");
Contract.Assert(wrapperProperty != null);
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, source));
}
else
{
// Initialize property 'TypeName' on the wrapper class as we don't have the instance.
Expression typeName = CreateTypeNameExpression(source, entityType, _model);
if (typeName != null)
{
wrapperProperty = wrapperType.GetProperty("TypeName");
Contract.Assert(wrapperProperty != null);
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, typeName));
}
}
// Initialize the property 'Container' on the wrapper class
// source => new Wrapper { Container = new PropertyContainer { .... } }
if (selectExpandClause != null)
{
Dictionary<IEdmNavigationProperty, SelectExpandClause> propertiesToExpand = GetPropertiesToExpandInQuery(selectExpandClause);
ISet<IEdmStructuralProperty> autoSelectedProperties;
ISet<IEdmStructuralProperty> propertiesToInclude = GetPropertiesToIncludeInQuery(selectExpandClause, entityType, out autoSelectedProperties);
if (propertiesToExpand.Count > 0 || propertiesToInclude.Count > 0)
{
wrapperProperty = wrapperType.GetProperty("Container");
Contract.Assert(wrapperProperty != null);
Expression propertyContainerCreation =
BuildPropertyContainer(entityType, source, propertiesToExpand, propertiesToInclude, autoSelectedProperties);
wrapperTypeMemberAssignments.Add(Expression.Bind(wrapperProperty, propertyContainerCreation));
}
}
return Expression.MemberInit(Expression.New(wrapperType), wrapperTypeMemberAssignments);
}
/// <summary>
/// Create a ExpandTransformationNode.
/// </summary>
/// <param name="expandClause">A <see cref="SelectExpandClause"/> representing the metadata bound expand expression.</param>
public ExpandTransformationNode(SelectExpandClause expandClause)
{
ExceptionUtils.CheckArgumentNotNull(expandClause, "expandClause");
this.expandClause = expandClause;
}
// new CollectionWrapper<ElementType> { Instance = source.Select((ElementType element) => new Wrapper { }) }
private Expression ProjectCollection(Expression source, Type elementType, SelectExpandClause selectExpandClause, IEdmEntityType entityType)
{
ParameterExpression element = Expression.Parameter(elementType);
// expression
// new Wrapper { }
Expression projection = ProjectElement(element, selectExpandClause, entityType);
// expression
// (ElementType element) => new Wrapper { }
LambdaExpression selector = Expression.Lambda(projection, element);
// expression
// source.Select((ElementType element) => new Wrapper { })
Expression selectedExpresion = Expression.Call(GetSelectMethod(elementType), source, selector);
if (_settings.HandleNullPropagation == HandleNullPropagationOption.True)
{
// source == null ? null : projectedCollection
return Expression.Condition(
test: Expression.Equal(source, Expression.Constant(null)),
ifTrue: Expression.Constant(null, selectedExpresion.Type),
ifFalse: selectedExpresion);
}
else
{
return selectedExpresion;
}
}
/// <summary> /// Decorate an expand tree using a select token. /// </summary> /// <param name="subExpand">the already built sub expand</param> /// <param name="currentNavProp">the current navigation property</param> /// <param name="select">the select token to use</param> /// <returns>A new SelectExpand clause decorated with the select token.</returns> protected abstract SelectExpandClause DecorateExpandWithSelect(SelectExpandClause subExpand, IEdmNavigationProperty currentNavProp, SelectToken select);
private static Dictionary<IEdmNavigationProperty, SelectExpandClause> GetPropertiesToExpandInQuery(SelectExpandClause selectExpandClause)
{
Dictionary<IEdmNavigationProperty, SelectExpandClause> properties = new Dictionary<IEdmNavigationProperty, SelectExpandClause>();
Expansion expansion = selectExpandClause.Expansion;
if (expansion != null)
{
foreach (ExpandItem expandItem in expansion.ExpandItems)
{
SelectExpandNode.ValidatePathIsSupported(expandItem.PathToNavigationProperty);
NavigationPropertySegment navigationSegment = expandItem.PathToNavigationProperty.LastSegment as NavigationPropertySegment;
if (navigationSegment == null)
{
throw new ODataException(SRResources.UnsupportedSelectExpandPath);
}
properties[navigationSegment.NavigationProperty] = expandItem.SelectExpandOption;
}
}
return properties;
}
// new CollectionWrapper<ElementType> { Instance = source.Select((ElementType element) => new Wrapper { }) }
private Expression ProjectCollection(Expression source, Type elementType, SelectExpandClause selectExpandClause, IEdmEntityType entityType, IEdmNavigationSource navigationSource, ExpandedNavigationSelectItem expandedItem)
{
ParameterExpression element = Expression.Parameter(elementType);
// expression
// new Wrapper { }
Expression projection = ProjectElement(element, selectExpandClause, entityType, navigationSource);
// expression
// (ElementType element) => new Wrapper { }
LambdaExpression selector = Expression.Lambda(projection, element);
if (expandedItem != null)
{
source = AddOrderByQueryForSource(source, expandedItem.OrderByOption, elementType);
}
if (_settings.PageSize.HasValue ||
(expandedItem != null && (expandedItem.TopOption.HasValue || expandedItem.SkipOption.HasValue)))
{
// nested paging. Need to apply order by first, and take one more than page size as we need to know
// whether the collection was truncated or not while generating next page links.
IEnumerable <IEdmStructuralProperty> properties =
entityType.Key().Any()
? entityType.Key()
: entityType
.StructuralProperties()
.Where(property => property.Type.IsPrimitive()).OrderBy(property => property.Name);
if (expandedItem == null || expandedItem.OrderByOption == null)
{
bool alreadyOrdered = false;
foreach (var prop in properties)
{
source = ExpressionHelpers.OrderByPropertyExpression(source, prop.Name, elementType,
alreadyOrdered);
if (!alreadyOrdered)
{
alreadyOrdered = true;
}
}
}
if (expandedItem != null && expandedItem.SkipOption.HasValue)
{
Contract.Assert(expandedItem.SkipOption.Value <= Int32.MaxValue);
source = ExpressionHelpers.Skip(source, (int)expandedItem.SkipOption.Value, elementType,
_settings.EnableConstantParameterization);
}
if (expandedItem != null && expandedItem.TopOption.HasValue)
{
Contract.Assert(expandedItem.TopOption.Value <= Int32.MaxValue);
source = ExpressionHelpers.Take(source, (int)expandedItem.TopOption.Value, elementType,
_settings.EnableConstantParameterization);
}
if (_settings.PageSize.HasValue)
{
source = ExpressionHelpers.Take(source, _settings.PageSize.Value + 1, elementType,
_settings.EnableConstantParameterization);
}
}
// expression
// source.Select((ElementType element) => new Wrapper { })
Expression selectedExpresion = Expression.Call(GetSelectMethod(elementType, projection.Type), source, selector);
if (_settings.HandleNullPropagation == HandleNullPropagationOption.True)
{
// source == null ? null : projectedCollection
return(Expression.Condition(
test: Expression.Equal(source, Expression.Constant(null)),
ifTrue: Expression.Constant(null, selectedExpresion.Type),
ifFalse: selectedExpresion));
}
else
{
return(selectedExpresion);
}
}
private static ISet<IEdmStructuralProperty> GetPropertiesToIncludeInQuery(
SelectExpandClause selectExpandClause, IEdmEntityType entityType, out ISet<IEdmStructuralProperty> autoSelectedProperties)
{
autoSelectedProperties = new HashSet<IEdmStructuralProperty>();
HashSet<IEdmStructuralProperty> propertiesToInclude = new HashSet<IEdmStructuralProperty>();
PartialSelection selection = selectExpandClause.Selection as PartialSelection;
if (selection != null && !selection.SelectedItems.OfType<WildcardSelectionItem>().Any())
{
// only select requested properties and keys.
foreach (PathSelectionItem pathSelectionItem in selection.SelectedItems.OfType<PathSelectionItem>())
{
SelectExpandNode.ValidatePathIsSupported(pathSelectionItem.SelectedPath);
PropertySegment structuralPropertySegment = pathSelectionItem.SelectedPath.LastSegment as PropertySegment;
if (structuralPropertySegment != null)
{
propertiesToInclude.Add(structuralPropertySegment.Property);
}
}
// add keys
foreach (IEdmStructuralProperty keyProperty in entityType.Key())
{
if (!propertiesToInclude.Contains(keyProperty))
{
autoSelectedProperties.Add(keyProperty);
}
}
}
return propertiesToInclude;
}
/// <summary>
/// Decorate an expand tree using a select token.
/// </summary>
/// <param name="subExpand">the already built sub expand</param>
/// <param name="currentNavProp">the current navigation property</param>
/// <param name="select">the select token to use</param>
/// <returns>A new SelectExpand clause decorated with the select token.</returns>
private SelectExpandClause DecorateExpandWithSelect(SelectExpandClause subExpand, IEdmNavigationProperty currentNavProp, SelectToken select)
{
SelectBinder selectBinder = new SelectBinder(this.Model, currentNavProp.ToEntityType(), this.Settings.SelectExpandLimit, subExpand, this.configuration.Resolver);
return(selectBinder.Bind(select));
}
private static bool IsSelectAll(SelectExpandClause selectExpandCaluse)
{
if (selectExpandCaluse == null
|| selectExpandCaluse.Selection == null
|| selectExpandCaluse.Selection == AllSelection.Instance)
{
return true;
}
PartialSelection partialSelection = selectExpandCaluse.Selection as PartialSelection;
if (partialSelection != null && partialSelection.SelectedItems.OfType<WildcardSelectionItem>().Any())
{
return true;
}
return false;
}
public void BuildSelectExpandNode_ThrowsODataException_IfUnknownSelectItemPresent()
{
SelectExpandClause selectExpandClause = new SelectExpandClause(new SelectItem[] { new Mock<SelectItem>().Object }, allSelected: false);
IEdmEntityType entityType = _model.Customer;
Assert.Throws<ODataException>(
() => new SelectExpandNode(selectExpandClause, entityType, _model.Model),
"$select does not support selections of type 'SelectItemProxy'.");
}
internal Expression ProjectAsWrapper(Expression source, SelectExpandClause selectExpandClause, IEdmEntityType entityType)
{
Type elementType;
if (source.Type.IsCollection(out elementType))
{
// new CollectionWrapper<ElementType> { Instance = source.Select(s => new Wrapper { ... }) };
return ProjectCollection(source, elementType, selectExpandClause, entityType);
}
else
{
// new Wrapper { v1 = source.property ... }
return ProjectElement(source, selectExpandClause, entityType);
}
}
public void ProcessLevelsCorrectly_WithMultipleProperties()
{
// Arrange
var model = ODataLevelsTest.GetEdmModel();
var context = new ODataQueryContext(
model,
model.FindDeclaredType("Microsoft.AspNet.OData.Test.Routing.LevelsEntity"));
context.RequestContainer = new MockContainer();
var selectExpand = new SelectExpandQueryOption(
select: null,
expand: "Parent($expand=Parent($levels=max),DerivedAncestors($levels=2;$select=ID)),BaseEntities($levels=2)",
context: context);
selectExpand.LevelsMaxLiteralExpansionDepth = 3;
// Act
SelectExpandClause clause = selectExpand.ProcessLevels();
// Assert
Assert.True(clause.AllSelected);
Assert.Equal(2, clause.SelectedItems.Count());
// Top level Parent.
var parent = Assert.Single(clause.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty.Name == "Parent"));
Assert.Null(parent.LevelsOption);
var clauseOfParent = parent.SelectAndExpand;
Assert.True(clauseOfParent.AllSelected);
Assert.Equal(2, clauseOfParent.SelectedItems.Count());
// Level 1 of inline Parent.
var inlineParent = Assert.Single(clauseOfParent.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty.Name == "Parent"));
Assert.Null(inlineParent.LevelsOption);
// Level 2 of inline Parent.
var inlineParentClause = inlineParent.SelectAndExpand;
Assert.True(inlineParentClause.AllSelected);
Assert.Single(inlineParentClause.SelectedItems);
inlineParent = Assert.IsType <ExpandedNavigationSelectItem>(inlineParentClause.SelectedItems.Single());
Assert.Equal(
"Parent",
((NavigationPropertySegment)inlineParent.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(inlineParent.LevelsOption);
inlineParentClause = inlineParent.SelectAndExpand;
Assert.True(inlineParentClause.AllSelected);
Assert.Empty(inlineParentClause.SelectedItems);
// Level 1 of inline DerivedAncestors.
var inlineDerivedAncestors = Assert.Single(clauseOfParent.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty.Name == "DerivedAncestors"));
Assert.Null(inlineDerivedAncestors.LevelsOption);
// Level 2 of inline DerivedAncestors.
var inlineDerivedAncestorsClause = inlineDerivedAncestors.SelectAndExpand;
Assert.False(inlineDerivedAncestorsClause.AllSelected);
Assert.Equal(3, inlineDerivedAncestorsClause.SelectedItems.Count());
var idItem = Assert.Single(inlineDerivedAncestorsClause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is PropertySegment));
Assert.Equal("ID", ((PropertySegment)idItem.SelectedPath.FirstSegment).Property.Name);
var derivedAncestorsItem = Assert.Single(inlineDerivedAncestorsClause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is NavigationPropertySegment));
Assert.Equal(
"DerivedAncestors",
((NavigationPropertySegment)derivedAncestorsItem.SelectedPath.FirstSegment).NavigationProperty.Name);
inlineDerivedAncestors = Assert.Single(inlineDerivedAncestorsClause.SelectedItems.OfType <ExpandedNavigationSelectItem>());
Assert.Equal(
"DerivedAncestors",
((NavigationPropertySegment)inlineDerivedAncestors.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(inlineDerivedAncestors.LevelsOption);
inlineDerivedAncestorsClause = inlineDerivedAncestors.SelectAndExpand;
Assert.False(inlineDerivedAncestorsClause.AllSelected);
Assert.Single(inlineDerivedAncestorsClause.SelectedItems);
idItem = Assert.Single(inlineDerivedAncestorsClause.SelectedItems.OfType <PathSelectItem>());
Assert.Equal("ID", ((PropertySegment)idItem.SelectedPath.FirstSegment).Property.Name);
// Level 1 of BaseEntities.
var baseEntities = Assert.Single(clause.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty.Name == "BaseEntities"));
Assert.Null(baseEntities.LevelsOption);
// Level 2 of BaseEntities.
var baseEntitiesClause = baseEntities.SelectAndExpand;
Assert.True(baseEntitiesClause.AllSelected);
Assert.Single(baseEntitiesClause.SelectedItems);
baseEntities = Assert.IsType <ExpandedNavigationSelectItem>(baseEntitiesClause.SelectedItems.Single());
Assert.Equal(
"BaseEntities",
((NavigationPropertySegment)baseEntities.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(baseEntities.LevelsOption);
baseEntitiesClause = baseEntities.SelectAndExpand;
Assert.True(baseEntitiesClause.AllSelected);
Assert.Empty(baseEntitiesClause.SelectedItems);
}
public void BuildSelectExpandNode_ThrowsODataException_IfUnknownSelectionItemPresent()
{
Selection selection = new PartialSelection(new[] { new Mock<SelectionItem>().Object });
SelectExpandClause selectExpandClause = new SelectExpandClause(selection, _emptyExpansion);
IEdmEntityTypeReference entityType = new EdmEntityTypeReference(_model.Customer, false);
Assert.Throws<ODataException>(
() => SelectExpandNode.BuildSelectExpandNode(selectExpandClause, entityType, _model.Model),
"$select does not support selections of type 'SelectionItemProxy'.");
}
public void ProcessLevelsCorrectly_WithAutoExpand(string url)
{
// Arrange
var model = GetAutoExpandEdmModel();
var context = new ODataQueryContext(
model,
model.FindDeclaredType("Microsoft.AspNet.OData.Test.Common.Models.AutoExpandCustomer"));
var request = RequestFactory.Create(HttpMethod.Get, url);
var queryOption = new ODataQueryOptions(context, request);
queryOption.AddAutoSelectExpandProperties();
var selectExpand = queryOption.SelectExpand;
// Act
SelectExpandClause clause = selectExpand.ProcessLevels();
// Assert
Assert.True(clause.AllSelected);
Assert.Equal(2, clause.SelectedItems.Count());
// Level 1 of Customer.
var cutomer = Assert.Single(
clause.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty
.Name == "Friend")
);
var clauseOfCustomer = cutomer.SelectAndExpand;
Assert.True(clauseOfCustomer.AllSelected);
Assert.Equal(2, clauseOfCustomer.SelectedItems.Count());
// Order under Customer.
var order = Assert.Single(
clause.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty
.Name == "Order")
);
Assert.Null(order.LevelsOption);
var clauseOfOrder = order.SelectAndExpand;
Assert.True(clauseOfOrder.AllSelected);
Assert.Single(clauseOfOrder.SelectedItems);
// Choice Order under Order
var choiceOrder = Assert.IsType <ExpandedNavigationSelectItem>(clauseOfOrder.SelectedItems.Single());
Assert.Null(choiceOrder.LevelsOption);
Assert.True(choiceOrder.SelectAndExpand.AllSelected);
Assert.Empty(choiceOrder.SelectAndExpand.SelectedItems);
// Level 2 of Order.
order = Assert.Single(
clauseOfCustomer.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty
.Name == "Order")
);
Assert.Null(order.LevelsOption);
clauseOfOrder = order.SelectAndExpand;
Assert.True(clauseOfOrder.AllSelected);
Assert.Empty(clauseOfOrder.SelectedItems);
// Level 2 of Customer.
cutomer = Assert.Single(
clauseOfCustomer.SelectedItems.OfType <ExpandedNavigationSelectItem>().Where(
item => item.PathToNavigationProperty.FirstSegment is NavigationPropertySegment &&
((NavigationPropertySegment)item.PathToNavigationProperty.FirstSegment).NavigationProperty
.Name == "Friend")
);
Assert.Null(cutomer.LevelsOption);
clauseOfCustomer = cutomer.SelectAndExpand;
Assert.True(clauseOfCustomer.AllSelected);
Assert.Empty(clauseOfCustomer.SelectedItems);
}
public void ProjectAsWrapper_NonCollection_ProjectedValueNullAndHandleNullPropagationTrue()
{
// Arrange
_settings.HandleNullPropagation = HandleNullPropagationOption.True;
ExpandedNavigationSelectItem expandItem = new ExpandedNavigationSelectItem(
new ODataExpandPath(new NavigationPropertySegment(_model.Order.NavigationProperties().Single(), entitySet: _model.Customers)),
_model.Customers,
selectExpandOption: null);
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[] { expandItem }, allSelected: true);
Expression source = Expression.Constant(null, typeof(Order));
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
SelectExpandWrapper<Order> projectedOrder = Expression.Lambda(projection).Compile().DynamicInvoke() as SelectExpandWrapper<Order>;
Assert.NotNull(projectedOrder);
Assert.Null(projectedOrder.Instance);
Assert.Null(projectedOrder.Container.ToDictionary()["Customer"]);
}
private void GetAutoSelectExpandItems(
IEdmEntityType baseEntityType,
IEdmModel model,
IEdmNavigationSource navigationSource,
bool isAllSelected,
ModelBoundQuerySettings modelBoundQuerySettings,
int depth,
out List <SelectItem> autoSelectItems,
out List <SelectItem> autoExpandItems)
{
autoSelectItems = new List <SelectItem>();
var autoSelectProperties = EdmLibHelpers.GetAutoSelectProperties(null,
baseEntityType, model, modelBoundQuerySettings);
foreach (var autoSelectProperty in autoSelectProperties)
{
List <ODataPathSegment> pathSegments = new List <ODataPathSegment>()
{
new PropertySegment(autoSelectProperty)
};
PathSelectItem pathSelectItem = new PathSelectItem(
new ODataSelectPath(pathSegments));
autoSelectItems.Add(pathSelectItem);
}
autoExpandItems = new List <SelectItem>();
depth--;
if (depth < 0)
{
return;
}
var autoExpandNavigationProperties = EdmLibHelpers.GetAutoExpandNavigationProperties(null, baseEntityType,
model, !isAllSelected, modelBoundQuerySettings);
foreach (var navigationProperty in autoExpandNavigationProperties)
{
IEdmNavigationSource currentEdmNavigationSource =
navigationSource.FindNavigationTarget(navigationProperty);
if (currentEdmNavigationSource != null)
{
List <ODataPathSegment> pathSegments = new List <ODataPathSegment>()
{
new NavigationPropertySegment(navigationProperty, currentEdmNavigationSource)
};
ODataExpandPath expandPath = new ODataExpandPath(pathSegments);
SelectExpandClause selectExpandClause = new SelectExpandClause(new List <SelectItem>(),
true);
ExpandedNavigationSelectItem item = new ExpandedNavigationSelectItem(expandPath,
currentEdmNavigationSource, selectExpandClause);
modelBoundQuerySettings = EdmLibHelpers.GetModelBoundQuerySettings(navigationProperty,
navigationProperty.ToEntityType(), model);
List <SelectItem> nestedSelectItems;
List <SelectItem> nestedExpandItems;
int maxExpandDepth = GetMaxExpandDepth(modelBoundQuerySettings, navigationProperty.Name);
if (maxExpandDepth != 0 && maxExpandDepth < depth)
{
depth = maxExpandDepth;
}
GetAutoSelectExpandItems(
currentEdmNavigationSource.EntityType(),
model,
item.NavigationSource,
true,
modelBoundQuerySettings,
depth,
out nestedSelectItems,
out nestedExpandItems);
selectExpandClause = new SelectExpandClause(nestedSelectItems.Concat(nestedExpandItems),
nestedSelectItems.Count == 0);
item = new ExpandedNavigationSelectItem(expandPath, currentEdmNavigationSource,
selectExpandClause);
autoExpandItems.Add(item);
if (!isAllSelected || autoSelectProperties.Count() != 0)
{
PathSelectItem pathSelectItem = new PathSelectItem(
new ODataSelectPath(pathSegments));
autoExpandItems.Add(pathSelectItem);
}
}
}
}
public void ProjectAsWrapper_NonCollection_ProjectedValueNullAndHandleNullPropagationFalse_Throws()
{
// Arrange
_settings.HandleNullPropagation = HandleNullPropagationOption.False;
ExpandedNavigationSelectItem expandItem = new ExpandedNavigationSelectItem(
new ODataExpandPath(new NavigationPropertySegment(_model.Order.NavigationProperties().Single(), entitySet: _model.Customers)),
_model.Customers,
selectExpandOption: null);
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[] { expandItem }, allSelected: true);
Expression source = Expression.Constant(null, typeof(Order));
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
var e = Assert.Throws<TargetInvocationException>(
() => Expression.Lambda(projection).Compile().DynamicInvoke());
Assert.IsType<NullReferenceException>(e.InnerException);
}
// Process $levels in ExpandedNavigationSelectItem.
private static ExpandedNavigationSelectItem ProcessLevels(
ExpandedNavigationSelectItem expandItem,
int levelsMaxLiteralExpansionDepth,
out bool levelsEncounteredInExpand,
out bool isMaxLevelInExpand)
{
int level;
isMaxLevelInExpand = false;
if (expandItem.LevelsOption == null)
{
levelsEncounteredInExpand = false;
level = 1;
}
else
{
levelsEncounteredInExpand = true;
if (expandItem.LevelsOption.IsMaxLevel)
{
isMaxLevelInExpand = true;
level = levelsMaxLiteralExpansionDepth;
}
else
{
level = (int)expandItem.LevelsOption.Level;
}
}
// Do not expand when:
// 1. $levels is equal to or less than 0.
// 2. $levels value is greater than current MaxExpansionDepth
if (level <= 0 || level > levelsMaxLiteralExpansionDepth)
{
return(null);
}
ExpandedNavigationSelectItem item = null;
SelectExpandClause currentSelectExpandClause = null;
SelectExpandClause selectExpandClause = null;
bool levelsEncounteredInInnerExpand = false;
bool isMaxLevelInInnerExpand = false;
// Try diffent expansion depth until expandItem.SelectAndExpand is successfully expanded
while (selectExpandClause == null && level > 0)
{
selectExpandClause = ProcessLevels(
expandItem.SelectAndExpand,
levelsMaxLiteralExpansionDepth - level,
out levelsEncounteredInInnerExpand,
out isMaxLevelInInnerExpand);
level--;
}
if (selectExpandClause == null)
{
return(null);
}
// Correct level value
level++;
while (level > 0)
{
if (item == null)
{
currentSelectExpandClause = selectExpandClause;
}
else if (selectExpandClause.AllSelected)
{
// Concat the processed items
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { item }.Concat(selectExpandClause.SelectedItems),
selectExpandClause.AllSelected);
}
else
{
// PathSelectItem is needed for the expanded item if AllSelected is false.
PathSelectItem pathSelectItem = new PathSelectItem(
new ODataSelectPath(expandItem.PathToNavigationProperty));
// Keep default SelectItems before expanded item to keep consistent with normal SelectExpandClause
SelectItem[] items = new SelectItem[] { item, pathSelectItem };
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { }.Concat(selectExpandClause.SelectedItems).Concat(items),
selectExpandClause.AllSelected);
}
// Construct a new ExpandedNavigationSelectItem with current SelectExpandClause.
item = new ExpandedNavigationSelectItem(
expandItem.PathToNavigationProperty,
expandItem.NavigationSource,
currentSelectExpandClause);
level--;
// Need expand and construct selectExpandClause every time if it is max level in inner expand
if (isMaxLevelInInnerExpand)
{
selectExpandClause = ProcessLevels(
expandItem.SelectAndExpand,
levelsMaxLiteralExpansionDepth - level,
out levelsEncounteredInInnerExpand,
out isMaxLevelInInnerExpand);
}
}
levelsEncounteredInExpand = levelsEncounteredInExpand || levelsEncounteredInInnerExpand;
isMaxLevelInExpand = isMaxLevelInExpand || isMaxLevelInInnerExpand;
return(item);
}
public void ProjectAsWrapper_Collection_ContainsRightInstance()
{
// Arrange
Order[] orders = new Order[] { new Order() };
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
Expression source = Expression.Constant(orders);
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
IEnumerable<SelectExpandWrapper<Order>> projectedOrders = Expression.Lambda(projection).Compile().DynamicInvoke() as IEnumerable<SelectExpandWrapper<Order>>;
Assert.NotNull(projectedOrders);
Assert.Same(orders[0], projectedOrders.Single().Instance);
}
public void CreateODataFeed_Ignores_InlineCount_ForInnerFeeds()
{
// Arrange
ODataFeedSerializer serializer = new ODataFeedSerializer(new DefaultODataSerializerProvider());
HttpRequestMessage request = new HttpRequestMessage();
request.SetInlineCount(42);
var result = new object[0];
IEdmNavigationProperty navProp = new Mock<IEdmNavigationProperty>().Object;
SelectExpandClause selectExpandClause = new SelectExpandClause(new SelectItem[0], allSelected: true);
EntityInstanceContext entity = new EntityInstanceContext
{
SerializerContext = new ODataSerializerContext { Request = request, EntitySet = _customerSet }
};
ODataSerializerContext nestedContext = new ODataSerializerContext(entity, selectExpandClause, navProp);
// Act
ODataFeed feed = serializer.CreateODataFeed(result, _customersType, nestedContext);
// Assert
Assert.Null(feed.Count);
}
public void ProjectAsWrapper_Collection_AppliesPageSize()
{
// Arrange
int pageSize = 5;
var orders = Enumerable.Range(0, 10).Select(i => new Order());
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
Expression source = Expression.Constant(orders);
_settings.PageSize = pageSize;
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
IEnumerable<SelectExpandWrapper<Order>> projectedOrders = Expression.Lambda(projection).Compile().DynamicInvoke() as IEnumerable<SelectExpandWrapper<Order>>;
Assert.NotNull(projectedOrders);
Assert.Equal(pageSize + 1, projectedOrders.Count());
}
internal AggregationBinderEFFake(ODataQuerySettings settings, IWebApiAssembliesResolver assembliesResolver, Type elementType, IEdmModel model, TransformationNode transformation, ODataQueryContext context, SelectExpandClause selectExpandClause = null)
: base(settings, assembliesResolver, elementType, model, transformation, context, selectExpandClause)
{
}
public void ProjectAsWrapper_NullExpandedProperty_HasNullValueInProjectedWrapper()
{
// Arrange
Order order = new Order();
ExpandedNavigationSelectItem expandItem = new ExpandedNavigationSelectItem(
new ODataExpandPath(new NavigationPropertySegment(_model.Order.NavigationProperties().Single(), entitySet: _model.Customers)),
_model.Customers,
selectExpandOption: null);
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[] { expandItem }, allSelected: true);
Expression source = Expression.Constant(order);
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
SelectExpandWrapper<Order> projectedOrder = Expression.Lambda(projection).Compile().DynamicInvoke() as SelectExpandWrapper<Order>;
Assert.NotNull(projectedOrder);
Assert.Contains("Customer", projectedOrder.Container.ToDictionary().Keys);
Assert.Null(projectedOrder.Container.ToDictionary()["Customer"]);
}
/// <summary>
/// Generate delta token and save (delta token, delta query) mapping
/// </summary>
/// <param name="query">Delta query</param>
/// <returns>Delta token</returns>
public static string GenerateDeltaToken(Uri query, IEnumerable entries, IEdmNavigationSource entitySource, SelectExpandClause selectExpandClause)
{
// TODO [lianw]: Consider multiple threads here, may need add lock here.
// TODO [lianw]: May need to optimize here, if $top/$skip/$count
//var builder = new ODataAnnotationUriBuilder(baseUri);
var deltaSnapshot = new DeltaSnapshot(query);
SnapResults(deltaSnapshot.Entries, entries, entitySource, selectExpandClause, string.Empty, string.Empty);
string deltaToken = deltaSnapshot.TimeStamp.Ticks.ToString(CultureInfo.InvariantCulture);
DeltaTokenDic[deltaToken] = deltaSnapshot;
return(deltaToken);
}
public void ProjectAsWrapper_Collection_ProjectedValueNullAndHandleNullPropagationTrue()
{
// Arrange
_settings.HandleNullPropagation = HandleNullPropagationOption.True;
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
Expression source = Expression.Constant(null, typeof(Order[]));
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
IEnumerable<SelectExpandWrapper<Order>> projectedOrders = Expression.Lambda(projection).Compile().DynamicInvoke() as IEnumerable<SelectExpandWrapper<Order>>;
Assert.Null(projectedOrders);
}
private static void SnapResult(List <DeltaSnapshotEntry> results, object entry, IEdmNavigationSource entitySource, SelectExpandClause selectExpandClause, string parentId, string relationShip)
{
var oDataEntry = ODataObjectModelConverter.ConvertToODataEntry(entry, entitySource, ODataVersion.V4);
results.Add(new DeltaSnapshotEntry(oDataEntry.Id.AbsoluteUri, parentId, relationShip));
var expandedNavigationItems = selectExpandClause == null ? null : selectExpandClause.SelectedItems.OfType <ExpandedNavigationSelectItem>();
SnapExpandedEntry(results, entry, entitySource, expandedNavigationItems, oDataEntry.Id.AbsoluteUri);
}
public void ProjectAsWrapper_Collection_ProjectedValueNullAndHandleNullPropagationFalse_Throws()
{
// Arrange
_settings.HandleNullPropagation = HandleNullPropagationOption.False;
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
Expression source = Expression.Constant(null, typeof(Order[]));
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
var e = Assert.Throws<TargetInvocationException>(
() => Expression.Lambda(projection).Compile().DynamicInvoke());
Assert.IsType<ArgumentNullException>(e.InnerException);
}
/// <summary>
/// Initializes a new instance of the <see cref="ODataSerializerContext"/> class.
/// </summary>
/// <param name="resource">The resource whose property is being nested.</param>
/// <param name="selectExpandClause">The <see cref="SelectExpandClause"/> for the property being nested.</param>
/// <param name="edmProperty">The complex property being nested or the navigation property being expanded.
/// If the resource property is the dynamic complex, the resource property is null.
/// </param>
/// <remarks>This constructor is used to construct the serializer context for writing nested and expanded properties.</remarks>
public ODataSerializerContext(ResourceContext resource, SelectExpandClause selectExpandClause, IEdmProperty edmProperty)
: this(resource, edmProperty, null, null)
{
SelectExpandClause = selectExpandClause;
}
public void ProjectAsWrapper_Element_ProjectedValueContainsModelID()
{
// Arrange
Customer customer = new Customer();
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
Expression source = Expression.Constant(customer);
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Customer);
// Assert
SelectExpandWrapper<Customer> customerWrapper = Expression.Lambda(projection).Compile().DynamicInvoke() as SelectExpandWrapper<Customer>;
Assert.NotNull(customerWrapper.ModelID);
Assert.Same(_model.Model, ModelContainer.GetModel(customerWrapper.ModelID));
}
private Expression BuildPropertyContainer(IEdmEntityType elementType, Expression source,
Dictionary <IEdmNavigationProperty, ExpandedNavigationSelectItem> propertiesToExpand,
ISet <IEdmStructuralProperty> propertiesToInclude, ISet <IEdmStructuralProperty> autoSelectedProperties, bool isSelectingOpenTypeSegments)
{
IList <NamedPropertyExpression> includedProperties = new List <NamedPropertyExpression>();
foreach (KeyValuePair <IEdmNavigationProperty, ExpandedNavigationSelectItem> kvp in propertiesToExpand)
{
IEdmNavigationProperty propertyToExpand = kvp.Key;
ExpandedNavigationSelectItem expandItem = kvp.Value;
SelectExpandClause projection = expandItem.SelectAndExpand;
Expression propertyName = CreatePropertyNameExpression(elementType, propertyToExpand, source);
Expression propertyValue = CreatePropertyValueExpressionWithFilter(elementType, propertyToExpand, source,
expandItem.FilterOption);
Expression nullCheck = GetNullCheckExpression(propertyToExpand, propertyValue, projection);
Expression countExpression = CreateTotalCountExpression(propertyValue, expandItem);
// projection can be null if the expanded navigation property is not further projected or expanded.
if (projection != null)
{
propertyValue = ProjectAsWrapper(propertyValue, projection, propertyToExpand.ToEntityType(), expandItem.NavigationSource, expandItem);
}
NamedPropertyExpression propertyExpression = new NamedPropertyExpression(propertyName, propertyValue);
if (projection != null)
{
if (!propertyToExpand.Type.IsCollection())
{
propertyExpression.NullCheck = nullCheck;
}
else if (_settings.PageSize != null)
{
propertyExpression.PageSize = _settings.PageSize.Value;
}
propertyExpression.TotalCount = countExpression;
propertyExpression.CountOption = expandItem.CountOption;
}
includedProperties.Add(propertyExpression);
}
foreach (IEdmStructuralProperty propertyToInclude in propertiesToInclude)
{
Expression propertyName = CreatePropertyNameExpression(elementType, propertyToInclude, source);
Expression propertyValue = CreatePropertyValueExpression(elementType, propertyToInclude, source);
includedProperties.Add(new NamedPropertyExpression(propertyName, propertyValue));
}
foreach (IEdmStructuralProperty propertyToInclude in autoSelectedProperties)
{
Expression propertyName = CreatePropertyNameExpression(elementType, propertyToInclude, source);
Expression propertyValue = CreatePropertyValueExpression(elementType, propertyToInclude, source);
includedProperties.Add(new NamedPropertyExpression(propertyName, propertyValue)
{
AutoSelected = true
});
}
if (isSelectingOpenTypeSegments)
{
var dynamicPropertyDictionary = EdmLibHelpers.GetDynamicPropertyDictionary(elementType, _model);
Expression propertyName = Expression.Constant(dynamicPropertyDictionary.Name);
Expression propertyValue = Expression.Property(source, dynamicPropertyDictionary.Name);
Expression nullablePropertyValue = ExpressionHelpers.ToNullable(propertyValue);
if (_settings.HandleNullPropagation == HandleNullPropagationOption.True)
{
// source == null ? null : propertyValue
propertyValue = Expression.Condition(
test: Expression.Equal(source, Expression.Constant(value: null)),
ifTrue: Expression.Constant(value: null, type: propertyValue.Type.ToNullable()),
ifFalse: nullablePropertyValue);
}
else
{
propertyValue = nullablePropertyValue;
}
includedProperties.Add(new NamedPropertyExpression(propertyName, propertyValue));
}
// create a property container that holds all these property names and values.
return(PropertyContainer.CreatePropertyContainer(includedProperties));
}
public void ProjectAsWrapper_NonCollection_ContainsRightInstance()
{
// Arrange
Order order = new Order();
SelectExpandClause selectExpand = new SelectExpandClause(new SelectItem[0], allSelected: true);
Expression source = Expression.Constant(order);
// Act
Expression projection = _binder.ProjectAsWrapper(source, selectExpand, _model.Order);
// Assert
SelectExpandWrapper<Order> projectedOrder = Expression.Lambda(projection).Compile().DynamicInvoke() as SelectExpandWrapper<Order>;
Assert.NotNull(projectedOrder);
Assert.Same(order, projectedOrder.Instance);
}
private static Dictionary <IEdmNavigationProperty, ExpandedNavigationSelectItem> GetPropertiesToExpandInQuery(SelectExpandClause selectExpandClause)
{
Dictionary <IEdmNavigationProperty, ExpandedNavigationSelectItem> properties = new Dictionary <IEdmNavigationProperty, ExpandedNavigationSelectItem>();
foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
{
ExpandedNavigationSelectItem expandItem = selectItem as ExpandedNavigationSelectItem;
if (expandItem != null)
{
SelectExpandNode.ValidatePathIsSupported(expandItem.PathToNavigationProperty);
NavigationPropertySegment navigationSegment = expandItem.PathToNavigationProperty.LastSegment as NavigationPropertySegment;
if (navigationSegment == null)
{
throw new ODataException(SRResources.UnsupportedSelectExpandPath);
}
properties[navigationSegment.NavigationProperty] = expandItem;
}
}
return(properties);
}
/// <summary>
/// Creates a new instance of the <see cref="SelectExpandNode"/> class describing the set of structural properties,
/// nested properties, navigation properties, and actions to select and expand for the given <paramref name="selectExpandClause"/>.
/// </summary>
/// <param name="selectExpandClause">The parsed $select and $expand query options.</param>
/// <param name="structuredType">The structural type of the resource that would be written.</param>
/// <param name="model">The <see cref="IEdmModel"/> that contains the given structural type.</param>
public SelectExpandNode(SelectExpandClause selectExpandClause, IEdmStructuredType structuredType, IEdmModel model)
: this(selectExpandClause, structuredType, model, false)
{
}
/// <summary>
/// Build the expand clause for a given level in the selectExpandClause
/// </summary>
/// <param name="selectExpandClause">the current level select expand clause</param>
/// <param name="firstFlag">whether is inner SelectExpandClause</param>
/// <returns>the select and expand segment for context url in this level.</returns>
public string TranslateSelectExpandClause(SelectExpandClause selectExpandClause, bool firstFlag)
{
ExceptionUtils.CheckArgumentNotNull(selectExpandClause, "selectExpandClause");
List <string> selectList = selectExpandClause.GetCurrentLevelSelectList();
string selectClause = null;
string expandClause = null;
if (selectList.Any())
{
selectClause = String.Join(ODataConstants.ContextUriProjectionPropertySeparator, selectList.ToArray());
}
foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
{
if (selectItem is PathSelectItem pathSelectItem)
{
selectClause += this.Translate(pathSelectItem);
}
else if (selectItem.GetType() == typeof(ExpandedNavigationSelectItem))
{
if (string.IsNullOrEmpty(expandClause))
{
expandClause = firstFlag ? expandClause : string.Concat(ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual);
}
else
{
expandClause += ExpressionConstants.SymbolComma;
}
expandClause += this.Translate((ExpandedNavigationSelectItem)selectItem);
}
else if (selectItem.GetType() == typeof(ExpandedReferenceSelectItem))
{
if (string.IsNullOrEmpty(expandClause))
{
expandClause = firstFlag ? expandClause : string.Concat(ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual);
}
else
{
expandClause += ExpressionConstants.SymbolComma;
}
expandClause += this.Translate((ExpandedReferenceSelectItem)selectItem) + ODataConstants.UriSegmentSeparator + ODataConstants.EntityReferenceSegmentName;
}
}
selectClause = string.IsNullOrEmpty(selectClause) ? null : string.Concat(ExpressionConstants.QueryOptionSelect, ExpressionConstants.SymbolEqual, firstFlag ? Uri.EscapeDataString(selectClause) : selectClause);
if (string.IsNullOrEmpty(expandClause))
{
return(selectClause);
}
else
{
if (firstFlag)
{
return(string.IsNullOrEmpty(selectClause) ? string.Concat(ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual, Uri.EscapeDataString(expandClause)) : string.Concat(selectClause, ExpressionConstants.SymbolQueryConcatenate, ExpressionConstants.QueryOptionExpand, ExpressionConstants.SymbolEqual, Uri.EscapeDataString(expandClause)));
}
else
{
return(string.IsNullOrEmpty(selectClause) ? expandClause : string.Concat(selectClause, ";" + expandClause));
}
}
}
public void ProcessLevelsCorrectly_NotAllSelected()
{
// Arrange
var model = ODataLevelsTest.GetEdmModel();
var context = new ODataQueryContext(
model,
model.FindDeclaredType("Microsoft.AspNetCore.OData.Tests.Query.LevelsEntity"));
context.RequestContainer = new MockServiceProvider();
var selectExpand = new SelectExpandQueryOption(
select: "Name",
expand: "Parent($select=ID;$levels=max)",
context: context);
// Act
SelectExpandClause clause = selectExpand.ProcessLevels();
// Assert
// Level 1.
Assert.False(clause.AllSelected);
Assert.Equal(2, clause.SelectedItems.Count());
var nameSelectItem = Assert.Single(clause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is PropertySegment));
Assert.Equal("Name", ((PropertySegment)nameSelectItem.SelectedPath.FirstSegment).Property.Name);
// Before ODL 7.6, the expand navigation property will be added as a select item (PathSelectItem).
// After ODL 7.6 (include 7.6), the expand navigation property will not be added.
// Comment the following codes for visibility later.
/*
* var parentSelectItem = Assert.Single(clause.SelectedItems.OfType<PathSelectItem>().Where(
* item => item.SelectedPath.FirstSegment is NavigationPropertySegment));
* Assert.Equal(
* "Parent",
* ((NavigationPropertySegment)parentSelectItem.SelectedPath.FirstSegment).NavigationProperty.Name);
*/
Assert.Empty(clause.SelectedItems.OfType <PathSelectItem>().Where(item => item.SelectedPath.FirstSegment is NavigationPropertySegment));
var expandedItem = Assert.Single(clause.SelectedItems.OfType <ExpandedNavigationSelectItem>());
Assert.Equal(
"Parent",
((NavigationPropertySegment)expandedItem.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(expandedItem.LevelsOption);
// Level 2.
clause = expandedItem.SelectAndExpand;
Assert.False(clause.AllSelected);
Assert.Equal(3, clause.SelectedItems.Count());
var idSelectItem = Assert.Single(clause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is PropertySegment));
Assert.Equal("ID", ((PropertySegment)idSelectItem.SelectedPath.FirstSegment).Property.Name);
var parentSelectItem = Assert.Single(clause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is NavigationPropertySegment));
Assert.Equal(
"Parent",
((NavigationPropertySegment)parentSelectItem.SelectedPath.FirstSegment).NavigationProperty.Name);
expandedItem = Assert.Single(clause.SelectedItems.OfType <ExpandedNavigationSelectItem>());
Assert.Equal(
"Parent",
((NavigationPropertySegment)expandedItem.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(expandedItem.LevelsOption);
clause = expandedItem.SelectAndExpand;
Assert.False(clause.AllSelected);
Assert.Single(clause.SelectedItems);
idSelectItem = Assert.IsType <PathSelectItem>(clause.SelectedItems.Single());
Assert.Equal("ID", ((PropertySegment)idSelectItem.SelectedPath.FirstSegment).Property.Name);
}
private void BuildSelections(
SelectExpandClause selectExpandClause,
HashSet<IEdmStructuralProperty> allStructuralProperties,
HashSet<IEdmStructuralProperty> allNestedProperties,
HashSet<IEdmNavigationProperty> allNavigationProperties,
HashSet<IEdmAction> allActions,
HashSet<IEdmFunction> allFunctions)
{
foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
{
if (selectItem is ExpandedNavigationSelectItem)
{
continue;
}
PathSelectItem pathSelectItem = selectItem as PathSelectItem;
if (pathSelectItem != null)
{
ValidatePathIsSupported(pathSelectItem.SelectedPath);
ODataPathSegment segment = pathSelectItem.SelectedPath.LastSegment;
NavigationPropertySegment navigationPropertySegment = segment as NavigationPropertySegment;
if (navigationPropertySegment != null)
{
IEdmNavigationProperty navigationProperty = navigationPropertySegment.NavigationProperty;
if (allNavigationProperties.Contains(navigationProperty))
{
SelectedNavigationProperties.Add(navigationProperty);
}
continue;
}
PropertySegment structuralPropertySegment = segment as PropertySegment;
if (structuralPropertySegment != null)
{
IEdmStructuralProperty structuralProperty = structuralPropertySegment.Property;
if (allStructuralProperties.Contains(structuralProperty))
{
SelectedStructuralProperties.Add(structuralProperty);
}
else if (allNestedProperties.Contains(structuralProperty))
{
SelectedComplexProperties.Add(structuralProperty);
}
continue;
}
OperationSegment operationSegment = segment as OperationSegment;
if (operationSegment != null)
{
AddOperations(allActions, allFunctions, operationSegment);
continue;
}
DynamicPathSegment dynamicPathSegment = segment as DynamicPathSegment;
if (dynamicPathSegment != null)
{
SelectedDynamicProperties.Add(dynamicPathSegment.Identifier);
continue;
}
throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, segment.GetType().Name));
}
WildcardSelectItem wildCardSelectItem = selectItem as WildcardSelectItem;
if (wildCardSelectItem != null)
{
SelectedStructuralProperties = allStructuralProperties;
SelectedComplexProperties = allNestedProperties;
SelectedNavigationProperties = allNavigationProperties;
SelectAllDynamicProperties = true;
continue;
}
NamespaceQualifiedWildcardSelectItem wildCardActionSelection = selectItem as NamespaceQualifiedWildcardSelectItem;
if (wildCardActionSelection != null)
{
SelectedActions = allActions;
SelectedFunctions = allFunctions;
continue;
}
throw new ODataException(Error.Format(SRResources.SelectionTypeNotSupported, selectItem.GetType().Name));
}
}
private static void AddPageNextLinkSelectItems(OeModelBoundSettings settings, SelectExpandClause selectExpandClause, ref List <SelectItem> selectItems)
{
if (settings != null && (settings.PageSize > 0 || settings.NavigationNextLink))
{
if (selectItems == null)
{
selectItems = new List <SelectItem>(selectExpandClause.SelectedItems);
}
if (settings.PageSize > 0)
{
selectItems.Add(new Parsers.Translators.OePageSelectItem(settings.PageSize));
}
if (settings.NavigationNextLink)
{
selectItems.Add(Parsers.Translators.OeNextLinkSelectItem.Instance);
}
}
}
private void BuildOrderBySkipTake(OeNavigationSelectItem navigationItem, OrderByClause orderByClause, bool hasSelectItems)
{
while (orderByClause != null)
{
var propertyNode = (SingleValuePropertyAccessNode)orderByClause.Expression;
if (propertyNode.Source is SingleNavigationNode navigationNode)
{
OeNavigationSelectItem? match;
ExpandedNavigationSelectItem?navigationSelectItem = null;
for (; ;)
{
if ((match = navigationItem.FindHierarchyNavigationItem(navigationNode.NavigationProperty)) != null)
{
match.AddStructuralItem((IEdmStructuralProperty)propertyNode.Property, true);
break;
}
SelectExpandClause selectExpandClause;
if (navigationSelectItem == null)
{
var pathSelectItem = new PathSelectItem(new ODataSelectPath(new PropertySegment((IEdmStructuralProperty)propertyNode.Property)));
selectExpandClause = new SelectExpandClause(new[] { pathSelectItem }, false);
}
else
{
selectExpandClause = new SelectExpandClause(new[] { navigationSelectItem }, false);
}
var segment = new NavigationPropertySegment(navigationNode.NavigationProperty, navigationNode.NavigationSource);
navigationSelectItem = new ExpandedNavigationSelectItem(new ODataExpandPath(segment), navigationNode.NavigationSource, selectExpandClause);
if (navigationNode.Source is SingleNavigationNode singleNavigationNode)
{
navigationNode = singleNavigationNode;
}
else
{
break;
}
}
if (navigationSelectItem != null)
{
if (match == null)
{
match = navigationItem;
}
var selectItemTranslator = new OeSelectItemTranslator(_edmModel, true);
selectItemTranslator.Translate(match, navigationSelectItem);
}
}
else
{
if (hasSelectItems)
{
navigationItem.AddStructuralItem((IEdmStructuralProperty)propertyNode.Property, true);
}
}
orderByClause = orderByClause.ThenBy;
}
}
public SelectExpandClause Build(SelectExpandClause selectExpandClause, IEdmEntityType entityType)
{
return(selectExpandClause == null ? null : GetSelectItems(selectExpandClause, _modelBoundProvider.GetSettings(entityType)));
}
public static void SetSelectExpandClause(this HttpRequestMessage request,
SelectExpandClause selectExpandClause)
{
// Use correct argument name in ArgumentNullException, if any.
if (selectExpandClause == null)
{
throw Error.ArgumentNull("selectExpandClause");
}
Extensions.HttpRequestMessageExtensions.ODataProperties(request).SelectExpandClause = selectExpandClause;
}
public void ProcessLevelsCorrectly_NotAllSelected()
{
// Arrange
var model = ODataLevelsTest.GetEdmModel();
var context = new ODataQueryContext(
model,
model.FindDeclaredType("Microsoft.AspNet.OData.Test.Routing.LevelsEntity"));
context.RequestContainer = new MockContainer();
var selectExpand = new SelectExpandQueryOption(
select: "Name",
expand: "Parent($select=ID;$levels=max)",
context: context);
// Act
SelectExpandClause clause = selectExpand.ProcessLevels();
// Assert
// Level 1.
Assert.False(clause.AllSelected);
Assert.Equal(3, clause.SelectedItems.Count());
var nameSelectItem = Assert.Single(clause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is PropertySegment));
Assert.Equal("Name", ((PropertySegment)nameSelectItem.SelectedPath.FirstSegment).Property.Name);
var parentSelectItem = Assert.Single(clause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is NavigationPropertySegment));
Assert.Equal(
"Parent",
((NavigationPropertySegment)parentSelectItem.SelectedPath.FirstSegment).NavigationProperty.Name);
var expandedItem = Assert.Single(clause.SelectedItems.OfType <ExpandedNavigationSelectItem>());
Assert.Equal(
"Parent",
((NavigationPropertySegment)expandedItem.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(expandedItem.LevelsOption);
// Level 2.
clause = expandedItem.SelectAndExpand;
Assert.False(clause.AllSelected);
Assert.Equal(3, clause.SelectedItems.Count());
var idSelectItem = Assert.Single(clause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is PropertySegment));
Assert.Equal("ID", ((PropertySegment)idSelectItem.SelectedPath.FirstSegment).Property.Name);
parentSelectItem = Assert.Single(clause.SelectedItems.OfType <PathSelectItem>().Where(
item => item.SelectedPath.FirstSegment is NavigationPropertySegment));
Assert.Equal(
"Parent",
((NavigationPropertySegment)parentSelectItem.SelectedPath.FirstSegment).NavigationProperty.Name);
expandedItem = Assert.Single(clause.SelectedItems.OfType <ExpandedNavigationSelectItem>());
Assert.Equal(
"Parent",
((NavigationPropertySegment)expandedItem.PathToNavigationProperty.FirstSegment).NavigationProperty.Name);
Assert.Null(expandedItem.LevelsOption);
clause = expandedItem.SelectAndExpand;
Assert.False(clause.AllSelected);
Assert.Single(clause.SelectedItems);
idSelectItem = Assert.IsType <PathSelectItem>(clause.SelectedItems.Single());
Assert.Equal("ID", ((PropertySegment)idSelectItem.SelectedPath.FirstSegment).Property.Name);
}