/// <summary>
/// is this selection item a structural or navigation property selection item.
/// </summary>
/// <param name="selectItem">the selection item to check</param>
/// <returns>true if this selection item is a structural property selection item.</returns>
internal static bool IsStructuralOrNavigationPropertySelectionItem(SelectItem selectItem)
{
DebugUtils.CheckNoExternalCallers();
PathSelectItem pathSelectItem = selectItem as PathSelectItem;
return(pathSelectItem != null && (pathSelectItem.SelectedPath.LastSegment is NavigationPropertySegment || pathSelectItem.SelectedPath.LastSegment is PropertySegment));
}
private static SelectExpandClause CreateSelectExpandClauseNestedSelectWithComplexType()
{
ODataSelectPath personNamePath = new ODataSelectPath(new PropertySegment(HardCodedTestModel.GetPersonNameProp()));
ODataSelectPath personShoePath = new ODataSelectPath(new PropertySegment(HardCodedTestModel.GetPersonFavoriteDateProp()));
ODataSelectPath addrPath = new ODataSelectPath(new PropertySegment(HardCodedTestModel.GetPersonAddressProp()));
ODataSelectPath cityPath = new ODataSelectPath(new PropertySegment(HardCodedTestModel.GetAddressCityProperty()));
var cityClause = new SelectExpandClause(new List <SelectItem>(), false);
cityClause.AddToSelectedItems(new PathSelectItem(cityPath));
var addritem = new PathSelectItem(addrPath);
addritem.SelectAndExpand = cityClause;
var addritem1 = new PathSelectItem(addrPath);
var clause = new SelectExpandClause(new List <SelectItem>(), false);
clause.AddToSelectedItems(new PathSelectItem(personShoePath));
clause.AddToSelectedItems(new PathSelectItem(personNamePath));
clause.AddToSelectedItems(addritem);
clause.AddToSelectedItems(addritem1);
return(clause);
}
public void DuplicatedSelectPathInOneDollarSelectWorksAsSingle(string select, string expect)
{
// Arrange
ODataQueryOptionParser parser = new ODataQueryOptionParser(_model.Model, _model.Customer, _model.Customers,
new Dictionary <string, string> {
{ "$select", select }
});
// Act
SelectExpandClause selectAndExpand = parser.ParseSelectAndExpand();
// Assert
Assert.NotNull(selectAndExpand);
Assert.False(selectAndExpand.AllSelected);
SelectItem selectItem = Assert.Single(selectAndExpand.SelectedItems);
PathSelectItem pathSelectItem = Assert.IsType <PathSelectItem>(selectItem);
ODataPathSegment pathSegment = Assert.Single(pathSelectItem.SelectedPath);
if (expect == "ID")
{
PropertySegment propertySegment = Assert.IsType <PropertySegment>(pathSegment);
Assert.Equal(expect, propertySegment.Identifier);
}
else
{
OperationSegment operationSegment = Assert.IsType <OperationSegment>(pathSegment);
Assert.Equal(expect, operationSegment.Operations.Single().FullName());
}
}
public void NestedTopAndSkipAndCountWithValidExpression()
{
// Arrange
SelectToken select = ParseSelectToken("FavoriteColors($skip=4;$count=false;$top=2)");
// Act
SelectExpandClause clause = BinderForPerson.Bind(expandToken: null, selectToken: select);
// Assert
Assert.NotNull(clause);
Assert.NotNull(clause.SelectedItems);
// FavoriteColors
SelectItem selectItem = Assert.Single(clause.SelectedItems);
PathSelectItem subPathSelect = Assert.IsType <PathSelectItem>(selectItem);
Assert.NotNull(subPathSelect.SkipOption);
Assert.Equal(4, subPathSelect.SkipOption.Value);
Assert.NotNull(subPathSelect.CountOption);
Assert.False(subPathSelect.CountOption.Value);
Assert.NotNull(subPathSelect.TopOption);
Assert.Equal(2, subPathSelect.TopOption.Value);
}
private static void ValidateRestrictions(SelectExpandClause selectExpandClause, IEdmModel edmModel)
{
foreach (SelectItem selectItem in selectExpandClause.SelectedItems)
{
ExpandedNavigationSelectItem expandItem = selectItem as ExpandedNavigationSelectItem;
if (expandItem != null)
{
NavigationPropertySegment navigationSegment = (NavigationPropertySegment)expandItem.PathToNavigationProperty.LastSegment;
IEdmNavigationProperty navigationProperty = navigationSegment.NavigationProperty;
if (EdmLibHelpers.IsNotExpandable(navigationProperty, edmModel))
{
throw new ODataException(Error.Format(SRResources.NotExpandablePropertyUsedInExpand, navigationProperty.Name));
}
ValidateRestrictions(expandItem.SelectAndExpand, edmModel);
}
PathSelectItem pathSelectItem = selectItem as PathSelectItem;
if (pathSelectItem != null)
{
ODataPathSegment segment = pathSelectItem.SelectedPath.LastSegment;
NavigationPropertySegment navigationPropertySegment = segment as NavigationPropertySegment;
if (navigationPropertySegment != null)
{
IEdmNavigationProperty navigationProperty = navigationPropertySegment.NavigationProperty;
if (EdmLibHelpers.IsNotNavigable(navigationProperty, edmModel))
{
throw new ODataException(Error.Format(SRResources.NotNavigablePropertyUsedInNavigation, navigationProperty.Name));
}
}
}
}
}
public override Expression Translate(PathSelectItem item)
{
_pathSelect = true;
Expression expression;
if (item.SelectedPath.LastSegment is NavigationPropertySegment)
{
var segment = (NavigationPropertySegment)item.SelectedPath.LastSegment;
expression = Translate(segment, null);
}
else if (item.SelectedPath.LastSegment is PropertySegment)
{
var segment = (PropertySegment)item.SelectedPath.LastSegment;
_selectItemInfo = new SelectItemInfo(null, segment.Property, null, null);
PropertyInfo property = _parameter.Type.GetTypeInfo().GetProperty(segment.Property.Name);
expression = Expression.MakeMemberAccess(_parameter, property);
}
else
{
throw new InvalidOperationException(item.SelectedPath.LastSegment.GetType().Name + " not supported");
}
return(expression);
}
private void AddStructuralProperty(IEdmStructuralProperty structuralProperty, PathSelectItem pathSelectItem)
{
bool isComplexOrCollectComplex = IsComplexOrCollectionComplex(structuralProperty);
if (isComplexOrCollectComplex)
{
if (SelectedComplexProperties == null)
{
SelectedComplexProperties = new Dictionary <IEdmStructuralProperty, PathSelectItem>();
}
SelectedComplexProperties[structuralProperty] = pathSelectItem;
}
else
{
if (SelectedStructuralProperties == null)
{
SelectedStructuralProperties = new HashSet <IEdmStructuralProperty>();
}
// for primitive, enum and collection them, needn't care about the nested query options now.
// So, skip the path select item.
SelectedStructuralProperties.Add(structuralProperty);
}
}
public void NestedSelectWithValidExpressionOnCollection()
{
// Arrange
SelectToken select = ParseSelectToken("PreviousAddresses($select=Street)");
// Act
SelectExpandClause clause = BinderForPerson.Bind(expandToken: null, selectToken: select);
// Assert
Assert.NotNull(clause);
// only one top level $select
SelectItem selectItem = Assert.Single(clause.SelectedItems);
// it should be "PathSelectItem
PathSelectItem pathSelect = Assert.IsType <PathSelectItem>(selectItem);
Assert.NotNull(pathSelect.SelectAndExpand);
// Street
selectItem = Assert.Single(pathSelect.SelectAndExpand.SelectedItems);
PathSelectItem subPathSelect = Assert.IsType <PathSelectItem>(selectItem);
Assert.Equal("Street", subPathSelect.SelectedPath.ToResourcePathString(ODataUrlKeyDelimiter.Parentheses));
Assert.NotNull(subPathSelect.SelectAndExpand);
}
internal static string ParseSelect(this ODataQueryOptions options, DbUtility utility)
{
if (options.Count != null)
{
return("count(0)");
}
if (options.SelectExpand == null)
{
return("*");
}
if (options.SelectExpand.SelectExpandClause.AllSelected)
{
return("*");
}
List <string> s = new List <string>();
PathSelectItem select = null;
foreach (var item in options.SelectExpand.SelectExpandClause.SelectedItems)
{
select = item as PathSelectItem;
if (select != null)
{
foreach (PropertySegment path in select.SelectedPath)
{
s.Add(utility.SafeDbObject(path.Property.Name));
}
}
}
return(string.Join(",", s));
}
internal static string ParseSelect(this ExpandedNavigationSelectItem expanded)
{
if (expanded.CountOption.HasValue)
{
return("count(*)");
}
if (expanded.SelectAndExpand == null)
{
return("*");
}
if (expanded.SelectAndExpand.AllSelected)
{
return("*");
}
List <string> s = new List <string>();
PathSelectItem select = null;
foreach (var item in expanded.SelectAndExpand.SelectedItems)
{
select = item as PathSelectItem;
if (select != null)
{
foreach (PropertySegment path in select.SelectedPath)
{
s.Add(string.Format("[{0}]", path.Property.Name));
}
}
}
return(string.Join(",", s));
}
public void CreateNamedPropertyExpression_NonDerivedProperty_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
Expression customer = Expression.Constant(new Customer());
IEdmStructuralProperty homeAddressProperty = _customer.StructuralProperties().Single(c => c.Name == "HomeLocation");
ODataSelectPath selectPath = new ODataSelectPath(new PropertySegment(homeAddressProperty));
PathSelectItem pathSelectItem = new PathSelectItem(selectPath);
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
Assert.Equal("\"HomeLocation\"", namedProperty.Name.ToString());
if (options != HandleNullPropagationOption.True)
{
Assert.Equal("value(NS.Customer).HomeLocation", namedProperty.Value.ToString());
}
else
{
Assert.Equal("IIF((value(NS.Customer) == null)," +
" null," +
" value(NS.Customer).HomeLocation)", namedProperty.Value.ToString());
}
}
/// <summary>
/// Add sub $select item for this include property.
/// </summary>
/// <param name="remainingSegments">The remaining segments star from this include property.</param>
/// <param name="oldSelectItem">The old $select item.</param>
public void AddSubSelectItem(IList <ODataPathSegment> remainingSegments, PathSelectItem oldSelectItem)
{
if (remainingSegments == null)
{
// Be noted: In ODL v7.6.1, it's not allowed duplicated properties in $select.
// for example: "$select=abc($top=2),abc($skip=2)" is not allowed in ODL library.
// So, don't worry about the previous setting overrided by other same path.
// However, it's possibility in later ODL version (>=7.6.2) to allow duplicated properties in $select.
// It that case, please update the codes here otherwise the latter will win.
// Besides, $select=abc,abc($top=2) is not allowed in ODL 7.6.1.
Contract.Assert(_propertySelectItem == null);
_propertySelectItem = oldSelectItem;
}
else
{
if (_subSelectItems == null)
{
_subSelectItems = new List <SelectItem>();
}
_subSelectItems.Add(new PathSelectItem(new ODataSelectPath(remainingSegments), oldSelectItem.NavigationSource,
oldSelectItem.SelectAndExpand, oldSelectItem.FilterOption,
oldSelectItem.OrderByOption, oldSelectItem.TopOption,
oldSelectItem.SkipOption, oldSelectItem.CountOption,
oldSelectItem.SearchOption, oldSelectItem.ComputeOption));
}
}
public void CreateNamedPropertyExpression_WithMultiplePropertyAndType_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
Expression customer = Expression.Parameter(typeof(Customer)); // output will be different.
// Expression customer = Expression.Constant(new Customer());
SelectExpandClause selectExpandClause = ParseSelectExpand("HomeLocation/NS.CnAddress/Street", null);
PathSelectItem pathSelectItem = selectExpandClause.SelectedItems.First() as PathSelectItem;
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
/*
* Assert.NotNull(namedProperty);
* Assert.Equal("\"VipAddress\"", namedProperty.Name.ToString());
*
* if (options != HandleNullPropagationOption.True)
* {
* Assert.Equal("(value(NS.Customer) As VipCustomer).VipAddress", namedProperty.Value.ToString());
* }
* else
* {
* Assert.Equal("IIF(((value(NS.Customer) As VipCustomer) == null)," +
* " null," +
* " (value(NS.Customer) As VipCustomer).VipAddress)", namedProperty.Value.ToString());
* }*/
}
public void CreateNamedPropertyExpression_WithDerivedProperty_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
//Expression customer = Expression.Parameter(typeof(Customer)); output will be different.
Expression customer = Expression.Constant(new Customer());
IEdmStructuralProperty vipAddressProperty = _vipCustomer.StructuralProperties().Single(c => c.Name == "VipAddress");
ODataSelectPath selectPath = new ODataSelectPath(new TypeSegment(_vipCustomer, _customer, null),
new PropertySegment(vipAddressProperty));
PathSelectItem pathSelectItem = new PathSelectItem(selectPath);
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
Assert.Equal("\"VipAddress\"", namedProperty.Name.ToString());
if (options != HandleNullPropagationOption.True)
{
Assert.Equal("(value(NS.Customer) As VipCustomer).VipAddress", namedProperty.Value.ToString());
}
else
{
Assert.Equal("IIF(((value(NS.Customer) As VipCustomer) == null)," +
" null," +
" (value(NS.Customer) As VipCustomer).VipAddress)", namedProperty.Value.ToString());
}
}
public void CreateNamedPropertyExpression_WithMultipleProperty_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
//Expression customer = Expression.Parameter(typeof(Customer)); output will be different.
Expression customer = Expression.Constant(new Customer());
IEdmStructuralProperty homeLocationProperty = _customer.StructuralProperties().Single(c => c.Name == "HomeLocation");
IEdmStructuralProperty streetProperty = _address.StructuralProperties().Single(c => c.Name == "Street");
ODataSelectPath selectPath = new ODataSelectPath(new PropertySegment(homeLocationProperty),
new PropertySegment(streetProperty));
PathSelectItem pathSelectItem = new PathSelectItem(selectPath);
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
/*
* Assert.NotNull(namedProperty);
* Assert.Equal("\"VipAddress\"", namedProperty.Name.ToString());
*
* if (options != HandleNullPropagationOption.True)
* {
* Assert.Equal("(value(NS.Customer) As VipCustomer).VipAddress", namedProperty.Value.ToString());
* }
* else
* {
* Assert.Equal("IIF(((value(NS.Customer) As VipCustomer) == null)," +
* " null," +
* " (value(NS.Customer) As VipCustomer).VipAddress)", namedProperty.Value.ToString());
* }*/
}
/// <summary>
/// Handle a PathSelectItem
/// </summary>
/// <param name="item">the item to Handle</param>
public override void Handle(PathSelectItem item)
{
var propertySegment = item.SelectedPath.LastSegment as PropertySegment;
var openPropertySegment = item.SelectedPath.LastSegment as DynamicPathSegment;
// we ignore the NavigationPropertySegment since we already handle it as ExpandedNavigationSelectItem
if (propertySegment != null || openPropertySegment != null)
{
List <ODataProperty> properties = this.ProjectedEntryWrapper.Resource.Properties == null ? new List <ODataProperty>() : this.ProjectedEntryWrapper.Resource.Properties.ToList();
List <ODataNestedResourceInfoWrapper> nestedResourceInfos = this.ProjectedEntryWrapper.NestedResourceInfoWrappers == null ? new List <ODataNestedResourceInfoWrapper>() : this.ProjectedEntryWrapper.NestedResourceInfoWrappers.ToList();
string propertyName = (propertySegment != null) ? propertySegment.Property.Name : openPropertySegment.Identifier;
var property = this.OriginalEntryWrapper.Resource.Properties.SingleOrDefault(p => p.Name == propertyName);
if (property != null)
{
properties.Add(property);
}
else
{
var nestedInfo = this.OriginalEntryWrapper.NestedResourceInfoWrappers.SingleOrDefault(n => n.NestedResourceInfo.Name == propertyName);
if (nestedInfo != null)
{
nestedResourceInfos.Add(nestedInfo);
}
}
this.ProjectedEntryWrapper.Resource.Properties = properties.AsEnumerable();
this.ProjectedEntryWrapper.NestedResourceInfoWrappers = nestedResourceInfos.ToList();
}
}
public static PathSelectItem ShouldBePathSelectionItem(this SelectItem actual, ODataPath path)
{
PathSelectItem pathSeleteItem = actual.ShouldBeSelectedItemOfType <PathSelectItem>();
Assert.True(pathSeleteItem.SelectedPath.Equals(path));
return(pathSeleteItem);
}
private static IEnumerable <SelectItem> GetAutoExpandedNavigationSelectItems(
IEdmEntityType baseEntityType,
IEdmModel model,
string alreadyExpandedNavigationSourceName,
IEdmNavigationSource navigationSource,
bool isAllSelected,
bool searchDerivedTypeWhenAutoExpand)
{
var expandItems = new List <SelectItem>();
var autoExpandNavigationProperties = EdmLibHelpers.GetAutoExpandNavigationProperties(baseEntityType, model,
searchDerivedTypeWhenAutoExpand);
foreach (var navigationProperty in autoExpandNavigationProperties)
{
if (!alreadyExpandedNavigationSourceName.Equals(navigationProperty.Name))
{
IEdmEntityType entityType = navigationProperty.DeclaringEntityType();
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);
if (!currentEdmNavigationSource.EntityType().Equals(entityType))
{
IEnumerable <SelectItem> nestedSelectItems = GetAutoExpandedNavigationSelectItems(
currentEdmNavigationSource.EntityType(),
model,
alreadyExpandedNavigationSourceName,
item.NavigationSource,
true,
searchDerivedTypeWhenAutoExpand);
selectExpandClause = new SelectExpandClause(nestedSelectItems, true);
item = new ExpandedNavigationSelectItem(expandPath, currentEdmNavigationSource,
selectExpandClause);
}
expandItems.Add(item);
if (!isAllSelected)
{
PathSelectItem pathSelectItem = new PathSelectItem(
new ODataSelectPath(pathSegments));
expandItems.Add(pathSelectItem);
}
}
}
}
return(expandItems);
}
private static Expression BuildOrderBySkipToken(OeSelectItem navigationItem, OrderByClause orderByClause, Expression source, OeJoinBuilder joinBuilder, bool hasSelectItems)
{
while (orderByClause != null)
{
var propertyNode = (SingleValuePropertyAccessNode)orderByClause.Expression;
if (propertyNode.Source is SingleNavigationNode navigationNode)
{
OeSelectItem match = null;
ExpandedNavigationSelectItem navigationSelectItem = null;
do
{
if ((match = navigationItem.FindHierarchyNavigationItem(navigationNode.NavigationProperty)) != null)
{
match.AddSelectItem(new OeSelectItem(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);
}while ((navigationNode = navigationNode.Source as SingleNavigationNode) != null);
if (navigationSelectItem != null)
{
if (match == null)
{
match = navigationItem;
}
var selectItemTranslator = new OeSelectItemTranslator(match, false, source, joinBuilder, true);
navigationSelectItem.TranslateWith(selectItemTranslator);
source = selectItemTranslator.Source;
}
}
else
{
if (hasSelectItems)
{
navigationItem.AddSelectItem(new OeSelectItem(propertyNode.Property, true));
}
}
orderByClause = orderByClause.ThenBy;
}
return(source);
}
public void TopOptionSetCorrectly()
{
// Arrange & Act
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), null, null, null, null, 5, null, null, null, null);
// Assert
Assert.NotNull(select.TopOption);
Assert.Equal(5, select.TopOption.Value);
}
public void CountQueryOptionSetCorrectly()
{
// Arrange & Act
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), null, null, null, null, null, null, true, null, null);
// Assert
Assert.NotNull(select.CountOption);
Assert.True(select.CountOption.Value);
}
public void ComputeOptionSetCorrectly()
{
// Arrange & Act
ComputeClause compute = new ComputeClause(null);
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), null, null, null, null, null, null, null, null, compute);
// Assert
Assert.NotNull(select.ComputeOption);
Assert.Same(compute, select.ComputeOption);
}
public void SelectExpandOptionSetCorrectly()
{
// Arrange & Act
SelectExpandClause selectAndExpand = new SelectExpandClause(null, true);
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), null, selectAndExpand, null, null, null, null, null, null, null);
// Assert
Assert.NotNull(select.SelectAndExpand);
Assert.Same(selectAndExpand, select.SelectAndExpand);
}
public void NavigationSourceOptionSetCorrectly()
{
// Arrange & Act
var navigationSource = HardCodedTestModel.GetPeopleSet();
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), navigationSource, null, null, null, null, null, null, null, null);
// Assert
Assert.NotNull(select.NavigationSource);
Assert.Same(navigationSource, select.NavigationSource);
}
public void SearchOptionSetCorrectly()
{
// Arrange & Act
SearchClause search = new SearchClause(new SearchTermNode("SearchMe"));
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), null, null, null, null, null, null, null, search, null);
// Assert
Assert.NotNull(select.SearchOption);
select.SearchOption.Expression.ShouldBeSearchTermNode("SearchMe");
}
public void PathSelectionItemIsNotImplemented()
{
FakeHandler handler = new FakeHandler();
PathSelectItem item = new PathSelectItem(new ODataSelectPath()
{
new PropertySegment(ModelBuildingHelpers.BuildValidPrimitiveProperty())
});
Action visitPath = () => item.HandleWith(handler);
visitPath.ShouldThrow <NotImplementedException>();
}
private void ProcessTokenAsPath(NonSystemToken tokenIn)
{
Debug.Assert(tokenIn != null, "tokenIn != null");
List <ODataPathSegment> pathSoFar = new List <ODataPathSegment>();
IEdmStructuredType currentLevelType = this.edmType;
// first, walk through all type segments in a row, converting them from tokens into segments.
if (tokenIn.IsNamespaceOrContainerQualified())
{
PathSegmentToken firstNonTypeToken;
pathSoFar.AddRange(SelectExpandPathBinder.FollowTypeSegments(tokenIn, this.model, this.maxDepth, ref currentLevelType, out firstNonTypeToken));
Debug.Assert(firstNonTypeToken != null, "Did not get last token.");
tokenIn = firstNonTypeToken as NonSystemToken;
if (tokenIn == null)
{
throw new ODataException(ODataErrorStrings.SelectPropertyVisitor_SystemTokenInSelect(firstNonTypeToken.Identifier));
}
}
// next, create a segment for the first non-type segment in the path.
ODataPathSegment lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(tokenIn, this.model, currentLevelType);
// next, create an ODataPath and add the segments to it.
if (lastSegment != null)
{
pathSoFar.Add(lastSegment);
}
ODataSelectPath selectedPath = new ODataSelectPath(pathSoFar);
var selectionItem = new PathSelectItem(selectedPath);
// non-navigation cases do not allow further segments in $select.
if (tokenIn.NextToken != null)
{
throw new ODataException(ODataErrorStrings.SelectBinder_MultiLevelPathInSelect);
}
// if the selected item is a nav prop, then see if its already there before we add it.
NavigationPropertySegment trailingNavPropSegment = selectionItem.SelectedPath.LastSegment as NavigationPropertySegment;
if (trailingNavPropSegment != null)
{
if (this.expandClauseToDecorate.SelectedItems.Any(x => x is PathSelectItem &&
((PathSelectItem)x).SelectedPath.Equals(selectedPath)))
{
return;
}
}
this.expandClauseToDecorate.AddToSelectedItems(selectionItem);
}
public void FilterOptionSetCorrectly()
{
// Arrange & Act
BinaryOperatorNode filterExpression = new BinaryOperatorNode(BinaryOperatorKind.Equal, new ConstantNode(1), new ConstantNode(1));
FilterClause filterClause = new FilterClause(filterExpression,
new ResourceRangeVariable(ExpressionConstants.It, HardCodedTestModel.GetPersonTypeReference(), HardCodedTestModel.GetPeopleSet()));
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), null, null, filterClause, null, null, null, null, null, null);
// Assert
Assert.NotNull(select.FilterOption);
Assert.Same(filterClause, select.FilterOption);
}
public void OrderbySetCorrectly()
{
// Arrange & Act
SingleValuePropertyAccessNode propertyAccessNode = new SingleValuePropertyAccessNode(new ConstantNode(1), HardCodedTestModel.GetPersonNameProp());
OrderByClause orderBy = new OrderByClause(null, propertyAccessNode, OrderByDirection.Descending,
new ResourceRangeVariable(ExpressionConstants.It, HardCodedTestModel.GetPersonTypeReference(), HardCodedTestModel.GetPeopleSet()));
PathSelectItem select = new PathSelectItem(new ODataSelectPath(), null, null, null, orderBy, null, null, null, null, null);
// Assert
Assert.NotNull(select.OrderByOption);
Assert.Same(orderBy, select.OrderByOption);
}
private static void HandlePathSelectItem(SelectStatement statement, PathSelectItem item)
{
var property = item.SelectedPath.FirstSegment as PropertySegment;
if (property != null)
{
statement.Columns(property.Property.Name);
}
else
{
throw new NotSupportedException(string.Format("PathSelectItem type '{0}' is not supported.", item.SelectedPath.FirstSegment.GetType().FullName));
}
}
/// <summary>
/// Handle a PathSelectItem
/// </summary>
/// <param name="item">the item to Handle</param>
public override void Handle(PathSelectItem item)
{
var propertySegment = item.SelectedPath.LastSegment as PropertySegment;
var openPropertySegment = item.SelectedPath.LastSegment as OpenPropertySegment;
// we ignore the NavigationPropertySegment since we already handle it as ExpandedNavigationSelectItem
if (propertySegment != null || openPropertySegment != null)
{
List<ODataProperty> properties = this.ProjectedEntry.Properties == null ? new List<ODataProperty>() : this.ProjectedEntry.Properties.ToList();
string propertyName = (propertySegment != null) ? propertySegment.Property.Name : openPropertySegment.PropertyName;
properties.Add(this.OriginalEntry.Properties.Single(p => p.Name == propertyName));
this.ProjectedEntry.Properties = properties.AsEnumerable();
}
}
private static IEnumerable<SelectItem> GetAutoExpandedNavigationSelectItems(
IEdmEntityType baseEntityType,
IEdmModel model,
string alreadyExpandedNavigationSourceName,
IEdmNavigationSource navigationSource,
bool isAllSelected,
bool searchDerivedTypeWhenAutoExpand)
{
var expandItems = new List<SelectItem>();
var autoExpandNavigationProperties = EdmLibHelpers.GetAutoExpandNavigationProperties(baseEntityType, model,
searchDerivedTypeWhenAutoExpand);
foreach (var navigationProperty in autoExpandNavigationProperties)
{
if (!alreadyExpandedNavigationSourceName.Equals(navigationProperty.Name))
{
IEdmEntityType entityType = navigationProperty.DeclaringEntityType();
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);
if (!currentEdmNavigationSource.EntityType().Equals(entityType))
{
IEnumerable<SelectItem> nestedSelectItems = GetAutoExpandedNavigationSelectItems(
currentEdmNavigationSource.EntityType(),
model,
alreadyExpandedNavigationSourceName,
item.NavigationSource,
true,
searchDerivedTypeWhenAutoExpand);
selectExpandClause = new SelectExpandClause(nestedSelectItems, true);
item = new ExpandedNavigationSelectItem(expandPath, currentEdmNavigationSource,
selectExpandClause);
}
expandItems.Add(item);
if (!isAllSelected)
{
PathSelectItem pathSelectItem = new PathSelectItem(
new ODataSelectPath(pathSegments));
expandItems.Add(pathSelectItem);
}
}
}
}
return expandItems;
}
// Process $levels in ExpandedNavigationSelectItem.
private ExpandedNavigationSelectItem ProcessLevels(
ExpandedNavigationSelectItem expandItem,
int levelsMaxLiteralExpansionDepth,
out bool levelsEncounteredInExpand,
out bool isMaxLevelInExpand)
{
int level;
isMaxLevelInExpand = false;
// $level=x
if (expandItem.LevelsOption != null && !expandItem.LevelsOption.IsMaxLevel)
{
levelsEncounteredInExpand = true;
level = (int)expandItem.LevelsOption.Level;
if (LevelsMaxLiteralExpansionDepth < 0)
{
levelsMaxLiteralExpansionDepth = level;
}
}
else
{
if (levelsMaxLiteralExpansionDepth < 0)
{
levelsMaxLiteralExpansionDepth = ODataValidationSettings.DefaultMaxExpansionDepth;
}
if (expandItem.LevelsOption == null)
{
// no $level
levelsEncounteredInExpand = false;
level = 1;
}
else
{
// $level=max
levelsEncounteredInExpand = true;
isMaxLevelInExpand = true;
level = levelsMaxLiteralExpansionDepth;
}
}
// 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++;
var entityType = expandItem.NavigationSource.EntityType();
string alreadyExpandedNavigationSourceName =
(expandItem.PathToNavigationProperty.LastSegment as NavigationPropertySegment).NavigationProperty.Name;
IEnumerable<SelectItem> autoExpandNavigationSelectItems = GetAutoExpandedNavigationSelectItems(
entityType,
Context.Model,
alreadyExpandedNavigationSourceName,
expandItem.NavigationSource,
selectExpandClause.AllSelected);
bool hasAutoExpandInExpand = (autoExpandNavigationSelectItems.Count() != 0);
while (level > 0)
{
if (item == null)
{
if (hasAutoExpandInExpand)
{
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { }.Concat(selectExpandClause.SelectedItems)
.Concat(autoExpandNavigationSelectItems),
selectExpandClause.AllSelected);
}
else
{
currentSelectExpandClause = selectExpandClause;
}
}
else if (selectExpandClause.AllSelected)
{
// Concat the processed items
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { item }.Concat(selectExpandClause.SelectedItems)
.Concat(autoExpandNavigationSelectItems),
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)
.Concat(autoExpandNavigationSelectItems),
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 || hasAutoExpandInExpand;
isMaxLevelInExpand = isMaxLevelInExpand || isMaxLevelInInnerExpand;
return item;
}
public void ConstructorShouldSetPropertyName()
{
var item = new PathSelectItem(new ODataSelectPath(new OpenPropertySegment("abc")));
item.SelectedPath.FirstSegment.ShouldBeOpenPropertySegment("abc");
}
/// <summary>
/// Handle a PathSelectItem
/// </summary>
/// <param name="item">the item to Handle</param>
public virtual void Handle(PathSelectItem item)
{
throw new NotImplementedException();
}
private void ProcessTokenAsPath(NonSystemToken tokenIn)
{
Debug.Assert(tokenIn != null, "tokenIn != null");
List<ODataPathSegment> pathSoFar = new List<ODataPathSegment>();
IEdmStructuredType currentLevelType = this.edmType;
// first, walk through all type segments in a row, converting them from tokens into segments.
if (tokenIn.IsNamespaceOrContainerQualified())
{
PathSegmentToken firstNonTypeToken;
pathSoFar.AddRange(SelectExpandPathBinder.FollowTypeSegments(tokenIn, this.model, this.maxDepth, this.resolver, ref currentLevelType, out firstNonTypeToken));
Debug.Assert(firstNonTypeToken != null, "Did not get last token.");
tokenIn = firstNonTypeToken as NonSystemToken;
if (tokenIn == null)
{
throw new ODataException(ODataErrorStrings.SelectPropertyVisitor_SystemTokenInSelect(firstNonTypeToken.Identifier));
}
}
// next, create a segment for the first non-type segment in the path.
ODataPathSegment lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(tokenIn, this.model, currentLevelType, resolver);
// next, create an ODataPath and add the segments to it.
if (lastSegment != null)
{
pathSoFar.Add(lastSegment);
bool hasCollectionInPath = false;
// try create a complex type property path.
while (true)
{
// no need to go on if the current property is not of complex type or collection of complex type.
currentLevelType = lastSegment.EdmType as IEdmStructuredType;
var collectionType = lastSegment.EdmType as IEdmCollectionType;
if ((currentLevelType == null || currentLevelType.TypeKind != EdmTypeKind.Complex)
&& (collectionType == null || collectionType.ElementType.TypeKind() != EdmTypeKind.Complex))
{
break;
}
NonSystemToken nextToken = tokenIn.NextToken as NonSystemToken;
if (nextToken == null)
{
break;
}
lastSegment = null;
// This means last segment a collection of complex type,
// current segment can only be type cast and cannot be proprty name.
if (currentLevelType == null)
{
currentLevelType = collectionType.ElementType.Definition as IEdmStructuredType;
hasCollectionInPath = true;
}
else if (!hasCollectionInPath)
{
// If there is no collection type in the path yet, will try to bind property for the next token
// first try bind the segment as property.
lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(nextToken, this.model,
currentLevelType, resolver);
}
// then try bind the segment as type cast.
if (lastSegment == null)
{
IEdmStructuredType typeFromNextToken = UriEdmHelpers.FindTypeFromModel(this.model, nextToken.Identifier, this.resolver) as IEdmStructuredType;
if (typeFromNextToken.IsOrInheritsFrom(currentLevelType))
{
lastSegment = new TypeSegment(typeFromNextToken, /*entitySet*/null);
}
}
// type cast failed too.
if (lastSegment == null)
{
break;
}
// try move to and add next path segment.
tokenIn = nextToken;
pathSoFar.Add(lastSegment);
}
}
ODataSelectPath selectedPath = new ODataSelectPath(pathSoFar);
var selectionItem = new PathSelectItem(selectedPath);
// non-navigation cases do not allow further segments in $select.
if (tokenIn.NextToken != null)
{
throw new ODataException(ODataErrorStrings.SelectBinder_MultiLevelPathInSelect);
}
// if the selected item is a nav prop, then see if its already there before we add it.
NavigationPropertySegment trailingNavPropSegment = selectionItem.SelectedPath.LastSegment as NavigationPropertySegment;
if (trailingNavPropSegment != null)
{
if (this.expandClauseToDecorate.SelectedItems.Any(x => x is PathSelectItem &&
((PathSelectItem)x).SelectedPath.Equals(selectedPath)))
{
return;
}
}
this.expandClauseToDecorate.AddToSelectedItems(selectionItem);
}
// Process $levels in ExpandedNavigationSelectItem.
private static ExpandedNavigationSelectItem ProcessLevels(
ExpandedNavigationSelectItem expandItem,
int levelsMaxLiteralExpansionDepth,
out bool levelsEncounteredInExpand)
{
// Call ProcessLevels on SelectExpandClause recursively.
SelectExpandClause selectExpandClause = ProcessLevels(
expandItem.SelectAndExpand,
levelsMaxLiteralExpansionDepth - 1,
out levelsEncounteredInExpand);
if (expandItem.LevelsOption == null)
{
if (levelsEncounteredInExpand)
{
return new ExpandedNavigationSelectItem(
expandItem.PathToNavigationProperty,
expandItem.NavigationSource,
selectExpandClause);
}
else
{
// Return the original ExpandedNavigationSelectItem if no $levels is found.
return expandItem;
}
}
// There is $levels in current ExpandedNavigationSelectItem.
levelsEncounteredInExpand = true;
int level = expandItem.LevelsOption.IsMaxLevel ?
levelsMaxLiteralExpansionDepth :
(int)expandItem.LevelsOption.Level;
if (level <= 0)
{
// Do not expand if $levels is equal to 0.
return null;
}
// Initialize current SelectExpandClause with processed SelectExpandClause.
SelectExpandClause currentSelectExpandClause = selectExpandClause;
ExpandedNavigationSelectItem item = null;
// Construct new ExpandedNavigationSelectItem with recursive expansion.
while (level > 0)
{
// Construct a new ExpandedNavigationSelectItem with current SelectExpandClause.
item = new ExpandedNavigationSelectItem(
expandItem.PathToNavigationProperty,
expandItem.NavigationSource,
currentSelectExpandClause);
// Update current SelectExpandClause with the new ExpandedNavigationSelectItem.
if (selectExpandClause.AllSelected)
{
currentSelectExpandClause = new SelectExpandClause(
new[] { 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));
currentSelectExpandClause = new SelectExpandClause(
new SelectItem[] { item, pathSelectItem }.Concat(selectExpandClause.SelectedItems),
selectExpandClause.AllSelected);
}
level--;
}
return item;
}
/// <summary>
/// Writes Selection Item of type PathSelectItem node to string
/// </summary>
/// <param name="node">Node to write to string</param>
/// <returns>String representation of node.</returns>
private static string ToString(PathSelectItem node)
{
return ToSingleLineString(node.SelectedPath);
}
// 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;
}
