private static DbEntityTypeMappingFragment FindConditionTypeMappingFragment(
TableMapping tableMapping, DbEntityTypeMappingFragment propertiesTypeMappingFragment,
DbEntityTypeMapping conditionTypeMapping)
{
var conditionTypeMappingFragment =
conditionTypeMapping.TypeMappingFragments.SingleOrDefault(x => x.Table == tableMapping.Table);
if (conditionTypeMappingFragment == null)
{
conditionTypeMappingFragment = EntityMappingOperations.CreateTypeMappingFragment(
conditionTypeMapping, propertiesTypeMappingFragment, tableMapping.Table);
conditionTypeMappingFragment.SetIsConditionOnlyFragment(true);
if (propertiesTypeMappingFragment.GetDefaultDiscriminator() != null)
{
conditionTypeMappingFragment.SetDefaultDiscriminator(
propertiesTypeMappingFragment.GetDefaultDiscriminator());
propertiesTypeMappingFragment.RemoveDefaultDiscriminatorAnnotation();
}
}
return conditionTypeMappingFragment;
}
private static void MoveDefaultDiscriminator(
DbEntityTypeMappingFragment fromFragment, DbEntityTypeMappingFragment toFragment)
{
var discriminatorColumn = fromFragment.GetDefaultDiscriminator();
if (discriminatorColumn != null)
{
var discriminator = fromFragment.ColumnConditions.SingleOrDefault(
cc => cc.Column == discriminatorColumn);
if (discriminator != null)
{
fromFragment.RemoveDefaultDiscriminatorAnnotation();
fromFragment.ColumnConditions.Remove(discriminator);
toFragment.AddDiscriminatorCondition(discriminator.Column, discriminator.Value);
toFragment.SetDefaultDiscriminator(discriminator.Column);
}
}
}