public override MetaDataMember GetDataMember(MemberInfo mi)
{
if (mi == null)
{
throw Error.ArgumentNull(nameof(mi));
}
if (this.dataMemberMap == null)
{
lock (this.locktarget) {
if (this.dataMemberMap == null)
{
var map = new Dictionary <object, MetaDataMember>();
foreach (MetaDataMember mm in this.dataMembers)
{
map.Add(InheritanceRules.DistinguishedMemberName(mm.Member), mm);
}
this.dataMemberMap = map;
}
}
}
object dn = InheritanceRules.DistinguishedMemberName(mi);
MetaDataMember mdm;
this.dataMemberMap.TryGetValue(dn, out mdm);
return(mdm);
}
void Validate()
{
Dictionary <object, string> memberToColumn = new Dictionary <object, string>();
foreach (MetaType type in this.InheritanceTypes)
{
if (type != this)
{
TableAttribute[] attrs = (TableAttribute[])type.Type.GetCustomAttributes(typeof(TableAttribute), false);
if (attrs.Length > 0)
{
throw Error.InheritanceSubTypeIsAlsoRoot(type.Type);
}
}
foreach (MetaDataMember mem in type.PersistentDataMembers)
{
if (mem.IsDeclaredBy(type))
{
if (mem.IsDiscriminator && !this.HasInheritance)
{
throw Error.NonInheritanceClassHasDiscriminator(type);
}
if (!mem.IsAssociation)
{
// validate that no database column is mapped twice
if (!String.IsNullOrEmpty(mem.MappedName))
{
string column;
object dn = InheritanceRules.DistinguishedMemberName(mem.Member);
if (memberToColumn.TryGetValue(dn, out column))
{
if (column != mem.MappedName)
{
throw Error.MemberMappedMoreThanOnce(mem.Member.Name);
}
}
else
{
memberToColumn.Add(dn, mem.MappedName);
}
}
}
}
}
}
}