private static bool TryGetCommonType(
EdmType edmType1,
EdmType edmType2,
out EdmType commonEdmType)
{
if (edmType2 == edmType1)
{
commonEdmType = edmType1;
return(true);
}
if (Helper.IsPrimitiveType(edmType1) && Helper.IsPrimitiveType(edmType2))
{
return(TypeSemantics.TryGetCommonType((PrimitiveType)edmType1, (PrimitiveType)edmType2, out commonEdmType));
}
if (Helper.IsCollectionType((GlobalItem)edmType1) && Helper.IsCollectionType((GlobalItem)edmType2))
{
return(TypeSemantics.TryGetCommonType((CollectionType)edmType1, (CollectionType)edmType2, out commonEdmType));
}
if (Helper.IsEntityTypeBase(edmType1) && Helper.IsEntityTypeBase(edmType2))
{
return(TypeSemantics.TryGetCommonBaseType(edmType1, edmType2, out commonEdmType));
}
if (Helper.IsRefType((GlobalItem)edmType1) && Helper.IsRefType((GlobalItem)edmType2))
{
return(TypeSemantics.TryGetCommonType((RefType)edmType1, (RefType)edmType2, out commonEdmType));
}
if (Helper.IsRowType((GlobalItem)edmType1) && Helper.IsRowType((GlobalItem)edmType2))
{
return(TypeSemantics.TryGetCommonType((RowType)edmType1, (RowType)edmType2, out commonEdmType));
}
commonEdmType = (EdmType)null;
return(false);
}
