private void PropagateConceptualSGPToStorageProperty(StorageProperty sProp)
{
if (null == sProp)
{
Debug.Fail("null StorageProperty");
return;
}
if (sProp.IsDisposed)
{
// this StorageProperty was deleted after this integrity check was created but
// before it was invoked - not an error - just ignore this property
return;
}
if (sProp.IsKeyProperty)
{
if (IsStorageForNonRootEntityType(sProp))
{
// this StorageProperty is for a key column on a table which acts as storage for a non-root EntityType
// (e.g. in a TPT hierarchy). So do not set SGP - it should be set only on the root column.
return;
}
if (IsDependentSidePropertyInAssociation(sProp))
{
// this StorageProperty is used in the dependent side of an Association.
// So do not set SGP - it should be set only on the principal side.
return;
}
}
// loop over ConceptualProperties mapped to this StorageProperty
foreach (var sp in sProp.GetAntiDependenciesOfType <ScalarProperty>())
{
// only use ScalarProperty elements inside an EntitySetMapping or EntityTypeMapping
// (MappingFragment is only used by those types of mappings)
if (null != sp.GetParentOfType(typeof(MappingFragment)))
{
// only propagate values from non-key C-side properties
var cProp = sp.Name.Target as ConceptualProperty;
if (cProp != null)
{
var cSideSGPValue = cProp.StoreGeneratedPattern.Value;
if (_propagateNoneSGP ||
false == ModelConstants.StoreGeneratedPattern_None.Equals(cSideSGPValue, StringComparison.Ordinal))
{
// have found a C-side property whose SGP value should be propagated
if (false == cSideSGPValue.Equals(sProp.StoreGeneratedPattern.Value, StringComparison.Ordinal))
{
var cmd = new UpdateDefaultableValueCommand <string>(sProp.StoreGeneratedPattern, cSideSGPValue);
CommandProcessor.InvokeSingleCommand(_cpc, cmd);
}
return;
}
// Otherwise have found a C-side SGP but it has value "None" and have been told not to propagate "None" values
// (will apply to where SGP is absent too since "None" is the default value).
// So loop round looking for the next C-side SGP to see if it applies.
}
}
}
}
