// detects whether the S-side Property represents the dependent side of an Association (e.g. for Split Entity or TPT or C-side Conditions)
private static bool IsDependentSidePropertyInAssociation(Property storageProperty)
{
if (storageProperty == null
|| storageProperty.EntityModel.IsCSDL)
{
Debug.Fail(
"should only receive a storage-side Property. Received property: "
+ (storageProperty == null ? "NULL" : storageProperty.ToPrettyString()));
return true; // returning true will mean this table's SGP settings will not be adjusted
}
foreach (var propRef in storageProperty.GetAntiDependenciesOfType<PropertyRef>())
{
var assoc = propRef.GetParentOfType(typeof(Association)) as Association;
if (assoc == null)
{
// no Association parent - so ignore this PropertyRef
continue;
}
foreach (var prop in assoc.DependentRoleProperties)
{
if (storageProperty.Equals(prop))
{
// found storage property on the dependent side which is part of an association
return true;
}
}
}
return false;
}
private static ICollection<Property> FindAllMappedSSidePropertiesForCSideProperty(Property cSideProp)
{
Debug.Assert(
cSideProp.EntityModel.IsCSDL,
"cSideProp with name " + cSideProp.NormalizedNameExternal + " is from SSDL, it must be from CSDL");
ICollection<Property> sSideProps = new List<Property>();
// return all the S-side Properties we find that map to
// the cSideProp argument
var scalarProps = cSideProp.GetAntiDependenciesOfType<ScalarProperty>();
foreach (var scalarProp in scalarProps)
{
// if the scalarProp is not from a MappingFragment then ignore
// (we want the column mapping, not e.g. an EndProperty mapping)
if (!(scalarProp.Parent is MappingFragment))
{
continue;
}
var sSideProp = scalarProp.ColumnName.Target;
if (null != sSideProp)
{
sSideProps.Add(sSideProp);
}
}
return sSideProps;
}
// detects whether the S-side Property is within the table which provides storage for a C-side non-root EntityType (e.g. in a TPT hierarchy)
private static bool IsStorageForNonRootEntityType(Property storageProperty)
{
if (storageProperty == null
|| storageProperty.EntityModel.IsCSDL)
{
Debug.Fail(
"should only receive a storage-side Property. Received property: "
+ (storageProperty == null ? "NULL" : storageProperty.ToPrettyString()));
return true; // returning true will mean this table's SGP settings will not be adjusted
}
foreach (var sp in storageProperty.GetAntiDependenciesOfType<ScalarProperty>())
{
var etm = sp.GetParentOfType(typeof(EntityTypeMapping)) as EntityTypeMapping;
if (etm == null)
{
// no EntityTypeMapping parent - so don't count this mapping
continue;
}
var etmKind = etm.Kind;
if (EntityTypeMappingKind.Default != etmKind
&& EntityTypeMappingKind.IsTypeOf != etmKind)
{
// EntityTypeMapping is not for Default or IsTypeOf mapping - so don't count for finding the corresponding C-side EntityType
continue;
}
var cSideEntityType = etm.FirstBoundConceptualEntityType;
if (cSideEntityType != null
&& cSideEntityType.HasResolvableBaseType)
{
var inheritanceStrategy = ModelHelper.DetermineCurrentInheritanceStrategy(cSideEntityType);
if (InheritanceMappingStrategy.TablePerType == inheritanceStrategy)
{
// C-side EntityType has TPT inheritance strategy and is not the base-most type in its inheritance hierarchy
return true;
}
}
}
return false;
}
private static Property FindMappedCSidePropertyForSSideProperty(Property sSideProp)
{
Debug.Assert(
!sSideProp.EntityModel.IsCSDL,
"sSideProp with name " + sSideProp.NormalizedNameExternal + " is from CSDL, it must be from SSDL");
// just return the first C-side Property we find that maps to
// the sSideProp argument - just need type etc information from
// it in order to clone a C-side Property in the existing artifact
var scalarProps = sSideProp.GetAntiDependenciesOfType<ScalarProperty>();
foreach (var scalarProp in scalarProps)
{
// if the scalarProp is not from a MappingFragment then ignore
// (we want the column mapping, not e.g. an EndProperty mapping)
if (!(scalarProp.Parent is MappingFragment))
{
continue;
}
var cSideProp = scalarProp.Name.Target;
if (null != cSideProp)
{
return cSideProp;
}
}
return null;
}
