/// <summary>
/// Finds members participating in the assocciation and adds them to the <paramref name="interestingMembers"/>.
/// </summary>
/// <param name="associationTypeMapping">Association type mapping. Must not be null.</param>
/// <param name="interestingMembers">The list the interesting members (if any) will be added to. Must not be null.</param>
private static void FindInterestingAssociationMappingMembers(StorageAssociationTypeMapping associationTypeMapping, List <EdmMember> interestingMembers)
{
Debug.Assert(associationTypeMapping != null, "entityTypeMapping != null");
Debug.Assert(interestingMembers != null, "interestingMembers != null");
//(2) Ends participating in association are "interesting"
interestingMembers.AddRange(
associationTypeMapping
.MappingFragments
.SelectMany(m => m.AllProperties)
.OfType <StorageEndPropertyMapping>()
.Select(epm => epm.EndMember));
}
/// <summary>
/// Finds interesting members for MetdataWorkspace.GetRequiredOriginalValueMembers() and MetdataWorkspace.GetRelevantMembersForUpdate() methods
/// for the given <paramref name="entitySet"/> and <paramref name="entityType"/>.
/// </summary>
/// <param name="entitySet">An EntitySet belonging to the C-Space. Must not be null.</param>
/// <param name="entityType">An EntityType that participates in the given EntitySet. Must not be null.</param>
/// <param name="interestingMembersKind">Scenario the members should be returned for.</param>
/// <returns>ReadOnlyCollection of interesting members for the requested scenario (<paramref name="interestingMembersKind"/>).</returns>
private ReadOnlyCollection <EdmMember> FindInterestingMembers(EntitySetBase entitySet, EntityTypeBase entityType, InterestingMembersKind interestingMembersKind)
{
Debug.Assert(entitySet != null, "entitySet != null");
Debug.Assert(entityType != null, "entityType != null");
var interestingMembers = new List <EdmMember>();
foreach (var storageTypeMapping in MappingMetadataHelper.GetMappingsForEntitySetAndSuperTypes(this, entitySet.EntityContainer, entitySet, entityType))
{
StorageAssociationTypeMapping associationTypeMapping = storageTypeMapping as StorageAssociationTypeMapping;
if (associationTypeMapping != null)
{
FindInterestingAssociationMappingMembers(associationTypeMapping, interestingMembers);
}
else
{
Debug.Assert(storageTypeMapping is StorageEntityTypeMapping, "StorageEntityTypeMapping expected.");
FindInterestingEntityMappingMembers((StorageEntityTypeMapping)storageTypeMapping, interestingMembersKind, interestingMembers);
}
}
// For backwards compatibility we don't return foreign keys from the obsolete MetadataWorkspace.GetRequiredOriginalValueMembers() method
if (interestingMembersKind != InterestingMembersKind.RequiredOriginalValueMembers)
{
FindForeignKeyProperties(entitySet, entityType, interestingMembers);
}
foreach (var functionMappings in MappingMetadataHelper
.GetModificationFunctionMappingsForEntitySetAndType(this, entitySet.EntityContainer, entitySet, entityType)
.Where(functionMappings => functionMappings.UpdateFunctionMapping != null))
{
FindInterestingFunctionMappingMembers(functionMappings, interestingMembersKind, ref interestingMembers);
}
Debug.Assert(interestingMembers != null, "interestingMembers must never be null.");
return(new ReadOnlyCollection <EdmMember>(interestingMembers.Distinct().ToList()));
}
/// <summary>
/// Finds members participating in the assocciation and adds them to the <paramref name="interestingMembers"/>.
/// </summary>
/// <param name="associationTypeMapping">Association type mapping. Must not be null.</param>
/// <param name="interestingMembers">The list the interesting members (if any) will be added to. Must not be null.</param>
private static void FindInterestingAssociationMappingMembers(StorageAssociationTypeMapping associationTypeMapping, List<EdmMember> interestingMembers)
{
Debug.Assert(associationTypeMapping != null, "entityTypeMapping != null");
Debug.Assert(interestingMembers != null, "interestingMembers != null");
//(2) Ends participating in association are "interesting"
interestingMembers.AddRange(
associationTypeMapping
.MappingFragments
.SelectMany(m => m.AllProperties)
.OfType<StorageEndPropertyMapping>()
.Select(epm => epm.EndMember));
}
