private void MapFunctions(LoadMethodSessionState session, EntityContainer modelEntityContainer)
{
if (_storeFunctions == null || _storeFunctions.Length == 0 || _targetEntityFrameworkVersion < EntityFrameworkVersions.Version3)
{
return;
}
//
// Create function imports and appropriate complex types for return parameters and add them to the item collection (session.EdmItemCollection).
// Create and add function mappings.
//
var interestingStoreFunctions = _storeFunctions.Where(
f => f.IsComposableAttribute &&
!f.AggregateAttribute &&
f.Parameters.All(p => p.Mode == ParameterMode.In));
foreach (var storeFunction in interestingStoreFunctions)
{
RowType tvfReturnType = TypeHelpers.GetTvfReturnType(storeFunction);
if (tvfReturnType == null)
{
continue;
}
// Create function import name.
string functionImportName = CreateModelName(storeFunction.Name, session.UsedEntityContainerItemNames);
// Create function import parameters.
UniqueIdentifierService usedParameterNames = new UniqueIdentifierService(false);
var parameters = storeFunction.Parameters.Select(p => CreateFunctionImportParameter(p, usedParameterNames)).ToArray();
var failedStoreParameterName = storeFunction.Parameters.Select(p => p.Name).Except(parameters.Select(p => p.Name)).FirstOrDefault();
if (failedStoreParameterName != null)
{
session.AddError(Strings.UnableToGenerateFunctionImportParameterName(failedStoreParameterName, storeFunction.Identity),
ModelBuilderErrorCode.UnableToGenerateFunctionImportParameterName, EdmSchemaErrorSeverity.Warning, null);
continue;
}
// Create new complex type and register it in the item collection.
var complexType = CreateModelComplexTypeForTvfResult(session, functionImportName, tvfReturnType);
complexType.SetReadOnly();
session.EdmItemCollection.AddInternal(complexType);
var collectionType = complexType.GetCollectionType();
collectionType.SetReadOnly();
var returnTypeUsage = TypeUsage.Create(collectionType);
// Create function import and register it in the item collection.
var functionImport = new EdmFunction(functionImportName, _modelEntityContainerName, DataSpace.CSpace, new EdmFunctionPayload()
{
Name = functionImportName,
NamespaceName = _namespaceName,
ReturnParameters = new FunctionParameter[] {new FunctionParameter(EdmConstants.ReturnType, returnTypeUsage, ParameterMode.ReturnValue)},
Parameters = parameters,
DataSpace = DataSpace.CSpace,
IsComposable = true,
IsFunctionImport = true
});
functionImport.SetReadOnly();
modelEntityContainer.AddFunctionImport(functionImport);
// Add mapping tuple.
session.MappingLookups.StoreFunctionToFunctionImport.Add(Tuple.Create(storeFunction, functionImport));
}
}
/// <summary>
/// Converts an entity container from SOM to metadata
/// </summary>
/// <param name="element">The SOM element to process</param>
/// <param name="providerManifest">The provider manifest to be used for conversion</param>
/// <param name="convertedItemCache">The item collection for currently existing metadata objects</param>
/// <param name="newGlobalItems">The new GlobalItem objects that are created as a result of this conversion</param>
/// <returns>The entity container object resulting from the convert</returns>
private static EntityContainer ConvertToEntityContainer(Som.EntityContainer element,
DbProviderManifest providerManifest,
ConversionCache convertedItemCache,
Dictionary<Som.SchemaElement, GlobalItem> newGlobalItems)
{
// Creating a new entity container object and populate with converted entity set objects
EntityContainer entityContainer = new EntityContainer(element.Name, GetDataSpace(providerManifest));
newGlobalItems.Add(element, entityContainer);
foreach (Som.EntityContainerEntitySet entitySet in element.EntitySets)
{
entityContainer.AddEntitySetBase(ConvertToEntitySet(entitySet,
entityContainer.Name,
providerManifest,
convertedItemCache,
newGlobalItems));
}
// Populate with converted relationship set objects
foreach (Som.EntityContainerRelationshipSet relationshipSet in element.RelationshipSets)
{
Debug.Assert(relationshipSet.Relationship.RelationshipKind == RelationshipKind.Association,
"We do not support containment set");
entityContainer.AddEntitySetBase(ConvertToAssociationSet(relationshipSet,
providerManifest,
convertedItemCache,
entityContainer,
newGlobalItems));
}
// Populate with converted function imports
foreach (Som.Function functionImport in element.FunctionImports)
{
entityContainer.AddFunctionImport(ConvertToFunction(functionImport,
providerManifest, convertedItemCache, entityContainer, newGlobalItems));
}
// Extract the optional Documentation
if (element.Documentation != null)
{
entityContainer.Documentation = ConvertToDocumentation(element.Documentation);
}
AddOtherContent(element, entityContainer);
return entityContainer;
}
