private static StorageMappingFragment FindConditionTypeMappingFragment(
EntitySet tableSet, StorageMappingFragment propertiesTypeMappingFragment, StorageEntityTypeMapping conditionTypeMapping)
{
var table = tableSet.ElementType;
var conditionTypeMappingFragment
= conditionTypeMapping.MappingFragments
.SingleOrDefault(x => x.Table == table);
if (conditionTypeMappingFragment == null)
{
conditionTypeMappingFragment
= EntityMappingOperations
.CreateTypeMappingFragment(conditionTypeMapping, propertiesTypeMappingFragment, tableSet);
conditionTypeMappingFragment.SetIsConditionOnlyFragment(true);
if (propertiesTypeMappingFragment.GetDefaultDiscriminator() != null)
{
conditionTypeMappingFragment.SetDefaultDiscriminator(
propertiesTypeMappingFragment.GetDefaultDiscriminator());
propertiesTypeMappingFragment.RemoveDefaultDiscriminatorAnnotation();
}
}
return(conditionTypeMappingFragment);
}
private static void MoveDefaultDiscriminator(
StorageMappingFragment fromFragment, StorageMappingFragment toFragment)
{
var discriminatorColumn = fromFragment.GetDefaultDiscriminator();
if (discriminatorColumn != null)
{
var discriminator = fromFragment.ColumnConditions.SingleOrDefault(
cc => cc.ColumnProperty == discriminatorColumn);
if (discriminator != null)
{
fromFragment.RemoveDefaultDiscriminatorAnnotation();
fromFragment.RemoveConditionProperty(discriminator);
toFragment.AddDiscriminatorCondition(discriminator.ColumnProperty, discriminator.Value);
toFragment.SetDefaultDiscriminator(discriminator.ColumnProperty);
}
}
}
public static EdmProperty RemoveDefaultDiscriminatorCondition(
this StorageMappingFragment entityTypeMappingFragment)
{
DebugCheck.NotNull(entityTypeMappingFragment);
var discriminatorColumn = entityTypeMappingFragment.GetDefaultDiscriminator();
if (discriminatorColumn != null &&
entityTypeMappingFragment.ColumnConditions.Any())
{
Debug.Assert(entityTypeMappingFragment.ColumnConditions.Count() == 1);
entityTypeMappingFragment.ClearConditions();
}
entityTypeMappingFragment.RemoveDefaultDiscriminatorAnnotation();
return(discriminatorColumn);
}
