private OeEntryFactory CreateNestedEntryFactory(Type sourceType, IEdmEntitySet entitySet, ODataNestedResourceInfo resourceInfo)
{
ParameterExpression parameter = Expression.Parameter(typeof(Object));
IReadOnlyList <MemberExpression> itemExpressions = OeExpressionHelper.GetPropertyExpression(Expression.Convert(parameter, sourceType));
List <OeEntryFactory> navigationLinks = GetNavigationLinks(itemExpressions, parameter);
OePropertyAccessor[] accessors;
if (_pathSelect)
{
var accessorsList = new List <OePropertyAccessor>(_selectItemInfos.Count);
for (int i = 0; i < _selectItemInfos.Count; i++)
{
SelectItemInfo info = _selectItemInfos[i];
if (info.EdmProperty is IEdmStructuralProperty)
{
accessorsList.Add(OePropertyAccessor.CreatePropertyAccessor(info.EdmProperty, itemExpressions[i], parameter));
}
}
accessors = accessorsList.ToArray();
}
else
{
accessors = OePropertyAccessor.CreateFromExpression(itemExpressions[0], parameter, entitySet);
}
return(OeEntryFactory.CreateEntryFactoryNested(entitySet, accessors, resourceInfo, navigationLinks));
}
private List <OeEntryFactory> GetNavigationLinks(IReadOnlyList <MemberExpression> itemExpressions, ParameterExpression parameter)
{
var navigationLinks = new List <OeEntryFactory>(_selectItemInfos.Count);
for (int i = 0; i < _selectItemInfos.Count; i++)
{
SelectItemInfo itemInfo = _selectItemInfos[i];
if (itemInfo.EdmProperty is IEdmNavigationProperty)
{
MemberExpression expression = itemExpressions[_pathSelect ? i : i + 1];
OeEntryFactory entryFactory;
if (itemInfo.EntryFactory == null)
{
Type type = expression.Type;
if (itemInfo.ResourceInfo.IsCollection.GetValueOrDefault())
{
type = OeExpressionHelper.GetCollectionItemType(type);
}
OePropertyAccessor[] accessors = OePropertyAccessor.CreateFromType(type, itemInfo.EntitySet);
entryFactory = OeEntryFactory.CreateEntryFactoryChild(itemInfo.EntitySet, accessors, itemInfo.ResourceInfo);
entryFactory.CountOption = itemInfo.CountOption;
}
else
{
entryFactory = itemInfo.EntryFactory;
}
entryFactory.LinkAccessor = (Func <Object, Object>)Expression.Lambda(expression, parameter).Compile();
navigationLinks.Add(entryFactory);
}
}
return(navigationLinks);
}
public OeQueryExpression(IEdmModel edmModel, IEdmEntitySet entitySet, Expression expression, OeEntryFactory entryFactory = null)
{
EdmModel = edmModel;
_entitySet = entitySet;
_expression = new OeEnumerableToQuerableVisitor().Visit(expression);
EntryFactory = entryFactory;
}
public OeEntryFactory CreateEntryFactory(Type entityType, IEdmEntitySetBase entitySet, Type sourceType)
{
ParameterExpression parameter = Expression.Parameter(typeof(Object));
IReadOnlyList <MemberExpression> itemExpressions = OeExpressionHelper.GetPropertyExpression(Expression.Convert(parameter, sourceType));
OeEntryFactory entryFactory;
List <OeEntryFactory> navigationLinks = GetNavigationLinks(itemExpressions, parameter);
if (_pathSelect)
{
var accessors = new List <OePropertyAccessor>(_selectItemInfos.Count);
for (int i = 0; i < _selectItemInfos.Count; i++)
{
SelectItemInfo info = _selectItemInfos[i];
if (info.EdmProperty is IEdmStructuralProperty)
{
accessors.Add(OePropertyAccessor.CreatePropertyAccessor(info.EdmProperty, itemExpressions[i], parameter));
}
}
entryFactory = OeEntryFactory.CreateEntryFactoryParent(entitySet, accessors.ToArray(), navigationLinks);
}
else
{
OePropertyAccessor[] accessors = OePropertyAccessor.CreateFromType(entityType, entitySet);
entryFactory = OeEntryFactory.CreateEntryFactoryParent(entitySet, accessors, navigationLinks);
entryFactory.LinkAccessor = (Func <Object, Object>)Expression.Lambda(itemExpressions[0], parameter).Compile();
}
return(entryFactory);
}
public OeEntryFactory GetEntryFactoryFromTuple(IEdmModel edmModel, OrderByClause orderByClause)
{
if (_entryFactoryFromTuple == null)
{
OePropertyAccessor[] skipTokenAccessors;
if (IsTuple)
{
if (SkipTokenAccessors.Length > 0)
{
skipTokenAccessors = GetSkipTokenAccessors(edmModel, orderByClause);
}
else
{
skipTokenAccessors = Array.Empty <OePropertyAccessor>();
}
}
else
{
skipTokenAccessors = SkipTokenAccessors;
}
_entryFactoryFromTuple = CreateEntryFactoryFromTuple(edmModel, null, skipTokenAccessors);
}
return(_entryFactoryFromTuple);
}
public static Db.OeBoundFunctionParameter CreateBoundFunctionParameter(OeQueryContext queryContext)
{
var expressionBuilder = queryContext.CreateExpressionBuilder();
Type sourceEntityType = queryContext.EntitySetAdapter.EntityType;
IEdmEntitySet sourceEntitySet = OeEdmClrHelper.GetEntitySet(queryContext.EdmModel, queryContext.EntitySetAdapter.EntitySetName);
Expression source = OeEnumerableStub.CreateEnumerableStubExpression(sourceEntityType, sourceEntitySet);
source = expressionBuilder.ApplyNavigation(source, queryContext.ParseNavigationSegments);
IEdmEntitySet targetEntitySet = OeOperationHelper.GetEntitySet(queryContext.ODataUri.Path);
if (sourceEntitySet != targetEntitySet)
{
queryContext.ODataUri.Path = new ODataPath(new EntitySetSegment(targetEntitySet));
}
expressionBuilder = queryContext.CreateExpressionBuilder();
Type targetEntityType = queryContext.EdmModel.GetClrType(targetEntitySet.EntityType());
Expression target = OeEnumerableStub.CreateEnumerableStubExpression(targetEntityType, targetEntitySet);
target = expressionBuilder.ApplySelect(target, queryContext);
OeEntryFactory targetEntryFactory = expressionBuilder.CreateEntryFactory(targetEntitySet, Array.Empty <OePropertyAccessor>());
var sourceQueryExpression = new OeQueryExpression(queryContext.EdmModel, sourceEntitySet, source);
var targetQueryExpression = new OeQueryExpression(queryContext.EdmModel, targetEntitySet, target, targetEntryFactory);
Type boundFunctionParameterType = typeof(Db.OeBoundFunctionParameter <,>).MakeGenericType(new[] { sourceEntityType, targetEntityType });
ConstructorInfo ctor = boundFunctionParameterType.GetConstructors()[0];
return((Db.OeBoundFunctionParameter)ctor.Invoke(new Object[] { sourceQueryExpression, targetQueryExpression }));
}
private OeEntryFactory CreateEntryFactoryFromTuple(IEdmModel edmModel, OeEntryFactory?parentEntryFactory, OePropertyAccessor[] skipTokenAccessors)
{
OePropertyAccessor[] accessors = _allAccessors;
if (IsTuple)
{
OePropertyAccessor[] propertyAccessors = OePropertyAccessor.CreateFromType(edmModel.GetClrType(EntitySet), EntitySet);
accessors = new OePropertyAccessor[_allAccessors.Length];
for (int i = 0; i < accessors.Length; i++)
{
OePropertyAccessor accessor = Array.Find(propertyAccessors, pa => pa.EdmProperty == _allAccessors[i].EdmProperty);
if (Array.IndexOf(Accessors, _allAccessors[i]) == -1)
{
var convertExpression = (UnaryExpression)accessor.PropertyExpression.Expression;
var parameterExpression = (ParameterExpression)convertExpression.Operand;
accessor = OePropertyAccessor.CreatePropertyAccessor(accessor.EdmProperty, accessor.PropertyExpression, parameterExpression, true);
}
accessors[i] = accessor;
}
}
var navigationLinks = new OeEntryFactory[NavigationLinks.Count];
for (int i = 0; i < NavigationLinks.Count; i++)
{
navigationLinks[i] = NavigationLinks[i].CreateEntryFactoryFromTuple(edmModel, this, Array.Empty <OePropertyAccessor>());
}
OeEntryFactoryOptions options;
if (parentEntryFactory == null)
{
options = new OeEntryFactoryOptions()
{
Accessors = accessors,
EntitySet = EntitySet,
NavigationLinks = navigationLinks,
SkipTokenAccessors = skipTokenAccessors,
};
return(new OeEntryFactory(ref options));
}
ParameterExpression parameter = Expression.Parameter(typeof(Object));
UnaryExpression typedParameter = Expression.Convert(parameter, edmModel.GetClrType(parentEntryFactory.EntitySet));
MemberExpression navigationPropertyExpression = Expression.Property(typedParameter, EdmNavigationProperty.Name);
LambdaExpression linkAccessor = Expression.Lambda(navigationPropertyExpression, parameter);
options = new OeEntryFactoryOptions()
{
Accessors = accessors,
EdmNavigationProperty = EdmNavigationProperty,
EntitySet = EntitySet,
LinkAccessor = linkAccessor,
NavigationLinks = navigationLinks,
NavigationSelectItem = NavigationSelectItem,
SkipTokenAccessors = skipTokenAccessors,
};
return(new OeEntryFactory(ref options));
}
public OeEntryFactory CreateEntryFactory(IEdmEntitySet entitySet)
{
if (_entryFactoryFactory != null)
{
return(_entryFactoryFactory(entitySet, ParameterType));
}
OePropertyAccessor[] accessors = OePropertyAccessor.CreateFromType(ParameterType, entitySet);
return(OeEntryFactory.CreateEntryFactory(entitySet, accessors));
}
public OeEntryFactory CreateEntryFactory(Type entityType, IEdmEntitySet entitySet, Type sourceType)
{
OePropertyAccessor[] accessors;
if (_aggProperties.Count == 0)
{
accessors = OePropertyAccessor.CreateFromType(entityType, entitySet);
}
else
{
accessors = OePropertyAccessor.CreateFromTuple(sourceType, _aggProperties, 0);
}
return(OeEntryFactory.CreateEntryFactory(entitySet, accessors));
}
public OeEntryFactory CreateEntryFactory(Type entityType, IEdmEntitySet entitySet, Type sourceType)
{
OePropertyAccessor[] accessors;
if (_aggProperties.Count == 0)
{
accessors = OePropertyAccessor.CreateFromType(entityType, entitySet);
}
else
{
int groupIndex = _aggProperties.FindIndex(a => a.IsGroup);
accessors = OePropertyAccessor.CreateFromTuple(sourceType, _aggProperties, groupIndex);
}
return(OeEntryFactory.CreateEntryFactory(entitySet, accessors));
}
public Expression ApplySelect(Expression source, OeQueryContext queryContext)
{
if (queryContext.ODataUri.Path.LastSegment is CountSegment)
{
return(source);
}
var selectTranslator = new Translators.OeSelectTranslator(_joinBuilder, queryContext.ODataUri.Path, queryContext.MetadataLevel);
source = selectTranslator.Build(source, queryContext);
_entryFactory = selectTranslator.EntryFactory;
ChangeParameterType(source);
return(source);
}
public OeQueryContext CreateQueryContext(ODataUri odataUri, OeMetadataLevel metadataLevel)
{
var importSegment = (OperationImportSegment)odataUri.Path.FirstSegment;
IEdmEntitySet entitySet = OeOperationHelper.GetEntitySet(importSegment.OperationImports.Single());
if (entitySet == null)
return null;
Type clrType = _edmModel.GetClrType(entitySet.EntityType());
OePropertyAccessor[] accessors = OePropertyAccessor.CreateFromType(clrType, entitySet);
Db.OeEntitySetAdapter entitySetAdapter = _dataAdapter.EntitySetAdapters.Find(entitySet);
return new OeQueryContext(_edmModel, odataUri, null, false, 0, false, metadataLevel, entitySetAdapter)
{
EntryFactory = OeEntryFactory.CreateEntryFactory(entitySet, accessors),
};
}
public Expression ApplyAggregation(Expression source, ApplyClause applyClause)
{
if (applyClause == null)
{
return(source);
}
var aggTranslator = new Translators.OeAggregationTranslator(Visitor);
Expression aggExpression = aggTranslator.Build(source, applyClause);
_entryFactory = aggTranslator.EntryFactory;
ChangeParameterType(aggExpression);
Visitor.TuplePropertyByAliasName = aggTranslator.GetTuplePropertyByAliasName;
return(aggExpression);
}
private OeEntryFactory CreateEntryFactory(OeExpressionBuilder expressionBuilder)
{
IEdmEntitySetBase entitySet = EntitySet;
if (expressionBuilder.EntityType != EntitySetAdapter.EntityType)
{
String typeName = expressionBuilder.EntityType.FullName;
Db.OeDataAdapter dataAdapter = EntitySetAdapter.DataAdapter;
Db.OeEntitySetMetaAdapter entitySetMetaAdapter = dataAdapter.EntitySetMetaAdapters.FindByTypeName(typeName);
if (entitySetMetaAdapter != null)
{
entitySet = EdmModel.FindDeclaredEntitySet(entitySetMetaAdapter.EntitySetName);
}
}
OeEntryFactory entryFactory = expressionBuilder.CreateEntryFactory(entitySet);
entryFactory.CountOption = ODataUri.QueryCount;
return(entryFactory);
}
private OeEntryFactory CreateEntryFactory(OeExpressionBuilder expressionBuilder)
{
IEdmEntitySet entitySet;
if (ODataUri.Path.LastSegment is OperationSegment)
{
entitySet = OeOperationHelper.GetEntitySet(ODataUri.Path);
Type clrEntityType = EdmModel.GetClrType(entitySet.EntityType());
OePropertyAccessor[] accessors = OePropertyAccessor.CreateFromType(clrEntityType, entitySet);
return(OeEntryFactory.CreateEntryFactory(entitySet, accessors));
}
entitySet = OeParseNavigationSegment.GetEntitySet(ParseNavigationSegments);
if (entitySet == null)
{
entitySet = OeEdmClrHelper.GetEntitySet(EdmModel, EntitySetAdapter.EntitySetName);
}
return(expressionBuilder.CreateEntryFactory(entitySet));
}
private OeEntryFactory CreateEntryFactoryFromTuple(OeEntryFactory parentEntryFactory)
{
OePropertyAccessor[] accessors = _allAccessors;
if (IsTuple)
{
accessors = new OePropertyAccessor[_allAccessors.Length];
OePropertyAccessor[] propertyAccessors = OePropertyAccessor.CreateFromType(ClrEntityType, EntitySet);
for (int i = 0; i < accessors.Length; i++)
{
OePropertyAccessor accessor = Array.Find(propertyAccessors, pa => pa.EdmProperty == _allAccessors[i].EdmProperty);
if (Array.IndexOf(Accessors, _allAccessors[i]) == -1)
{
var convertExpression = (UnaryExpression)accessor.PropertyExpression.Expression;
var parameterExpression = (ParameterExpression)convertExpression.Operand;
accessor = OePropertyAccessor.CreatePropertyAccessor(accessor.EdmProperty, accessor.PropertyExpression, parameterExpression, true);
}
accessors[i] = accessor;
}
}
var navigationLinks = new OeEntryFactory[NavigationLinks.Count];
for (int i = 0; i < NavigationLinks.Count; i++)
{
navigationLinks[i] = NavigationLinks[i].CreateEntryFactoryFromTuple(this);
}
if (parentEntryFactory == null)
{
return(OeEntryFactory.CreateEntryFactoryParent(ClrEntityType, EntitySet, accessors, navigationLinks, null));
}
ParameterExpression parameter = Expression.Parameter(typeof(Object));
UnaryExpression typedParameter = Expression.Convert(parameter, parentEntryFactory.ClrEntityType);
MemberExpression navigationPropertyExpression = Expression.Property(typedParameter, ResourceInfo.Name);
LambdaExpression linkAccessor = Expression.Lambda(navigationPropertyExpression, parameter);
return(OeEntryFactory.CreateEntryFactoryNested(ClrEntityType, EntitySet, accessors, navigationLinks, linkAccessor, ResourceInfo));
}
public async Task ExecuteAsync(ODataUri odataUri, Stream requestStream, OeRequestHeaders headers, Stream responseStream, CancellationToken cancellationToken)
{
var importSegment = (OperationImportSegment)odataUri.Path.LastSegment;
List <KeyValuePair <String, Object> > parameters = GetParameters(importSegment, requestStream, headers.ContentType);
Object dataContext = null;
try
{
dataContext = _dataAdapter.CreateDataContext();
var operation = (EdmOperation)importSegment.OperationImports.Single().Operation;
String procedureName;
if (String.IsNullOrEmpty(operation.Namespace))
{
procedureName = operation.Name;
}
else
{
procedureName = operation.Namespace + "." + operation.Name;
}
Type returnClrType = null;
if (operation.ReturnType != null)
{
IEdmTypeReference returnEdmTypeReference = operation.ReturnType;
if (returnEdmTypeReference is IEdmCollectionTypeReference)
{
returnEdmTypeReference = (returnEdmTypeReference.Definition as IEdmCollectionType).ElementType;
}
returnClrType = OeEdmClrHelper.GetClrType(_model, returnEdmTypeReference.Definition);
}
using (Db.OeEntityAsyncEnumerator asyncEnumerator = _dataAdapter.ExecuteProcedure(dataContext, procedureName, parameters, returnClrType))
{
if (returnClrType == null)
{
if (await asyncEnumerator.MoveNextAsync() && asyncEnumerator.Current != null)
{
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(asyncEnumerator.Current.ToString());
responseStream.Write(buffer, 0, buffer.Length);
}
}
else
{
String entitySetName = _dataAdapter.EntitySetMetaAdapters.FindByClrType(returnClrType).EntitySetName;
IEdmEntitySet entitySet = _model.FindDeclaredEntitySet(entitySetName);
Parsers.OePropertyAccessor[] accessors = Parsers.OePropertyAccessor.CreateFromType(returnClrType, entitySet);
Parsers.OeEntryFactory entryFactory = Parsers.OeEntryFactory.CreateEntryFactory(entitySet, accessors);
var parseUriContext = new Parsers.OeParseUriContext(_model, odataUri, entitySet, null, false)
{
EntryFactory = entryFactory,
Headers = headers
};
await Writers.OeGetWriter.SerializeAsync(_baseUri, parseUriContext, asyncEnumerator, responseStream).ConfigureAwait(false);
}
}
}
finally
{
if (dataContext != null)
{
_dataAdapter.CloseDataContext(dataContext);
}
}
await Task.CompletedTask;
}
protected override OeNavigationEntryFactory CreateEntryFactoryFromTuple(IEdmModel edmModel, OeEntryFactory parentEntryFactory)
{
OePropertyAccessor[] accessors = base.GetAccessorsFromTuple(edmModel);
var navigationLinks = new OeNavigationEntryFactory[NavigationLinks.Count];
for (int i = 0; i < NavigationLinks.Count; i++)
{
navigationLinks[i] = NavigationLinks[i].CreateEntryFactoryFromTuple(edmModel, this);
}
ParameterExpression parameter = Expression.Parameter(typeof(Object));
UnaryExpression typedParameter = Expression.Convert(parameter, edmModel.GetClrType(parentEntryFactory.EntitySet));
MemberExpression navigationPropertyExpression = Expression.Property(typedParameter, EdmNavigationProperty.Name);
LambdaExpression linkAccessor = Expression.Lambda(navigationPropertyExpression, parameter);
return(new OeNavigationEntryFactory(
EntitySet,
accessors,
null,
navigationLinks,
linkAccessor,
EdmNavigationProperty,
NavigationSelectItem,
false));
}
protected virtual OeNavigationEntryFactory CreateEntryFactoryFromTuple(IEdmModel edmModel, OeEntryFactory parentEntryFactory)
{
throw new InvalidOperationException("Must be invoke for " + nameof(OeNavigationEntryFactory));
}
