protected override void InvokeInternal(CommandProcessorContext cpc)
{
// make sure that there isn't an ETM of this kind already
var entityTypeMapping = ModelHelper.FindEntityTypeMapping(cpc, _entityType, _kind, false);
Debug.Assert(entityTypeMapping == null, "We are calling CreateEntityTypeMappingCommand and there is already one of this Kind");
if (entityTypeMapping != null)
{
_created = entityTypeMapping;
return;
}
// see if we can get the EntitySetMapping for our entity (if we weren't passed it)
if (_entitySetMapping == null)
{
var ces = _entityType.EntitySet as ConceptualEntitySet;
Debug.Assert(ces != null, "_entityType.EntitySet should be a ConceptualEntitySet");
// find the EntitySetMapping for this type (V1 assumption is that there is only ESM per ES)
EntitySetMapping esm = null;
foreach (var depMapping in ces.GetAntiDependenciesOfType <EntitySetMapping>())
{
esm = depMapping;
break;
}
_entitySetMapping = esm;
}
// if we still don't have an ESM, create one
if (_entitySetMapping == null)
{
var cmd = new CreateEntitySetMappingCommand(
_entityType.Artifact.MappingModel().FirstEntityContainerMapping,
_entityType.EntitySet as ConceptualEntitySet);
CommandProcessor.InvokeSingleCommand(cpc, cmd);
_entitySetMapping = cmd.EntitySetMapping;
}
Debug.Assert(
_entitySetMapping != null,
"_entitySetMapping should not be null - we have been unable to find or create an EntitySetMapping");
// create the ETM
var etm = new EntityTypeMapping(_entitySetMapping, null, _kind);
etm.TypeName.SetRefName(_entityType);
_entitySetMapping.AddEntityTypeMapping(etm);
XmlModelHelper.NormalizeAndResolve(etm);
_created = etm;
}
