public bool TryGetObjectStateEntry(EntityKey key, out ObjectStateEntry entry)
{
ChangeSet changeSet = _context.GetChangeSet();
object entity = changeSet.Inserts.SingleOrDefault(x => key.Matches(x));
if (entity != null)
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Added };
return true;
}
entity = changeSet.Updates.SingleOrDefault(x => key.Matches(x));
if (entity != null)
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Modified };
return true;
}
entity = changeSet.Deletes.SingleOrDefault(x => key.Matches(x));
if (entity != null)
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Deleted };
return true;
}
MetaType metaType = _context.Mapping.GetTable(key.EntityType).RowType;
entity = _dataServices.GetCachedObject(metaType, key.PrimaryKeyValues);
if (entity != null)
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Unchanged };
return true;
}
entry = null;
return false;
}
public bool TryGetObjectStateEntry(object entity, out ObjectStateEntry entry)
{
Type entityType = entity.GetType();
var primaryKeys = DataContextHelper.GetPrimaryKeys(entityType);
EntityKey key = new EntityKey(entityType, primaryKeys.Select(x => new KeyValuePair<Property, object>(x, x.GetValue(entity))));
ChangeSet changeSet = _context.GetChangeSet();
if (changeSet.Inserts.Any(x => x == entity))
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Added };
return true;
}
if (changeSet.Updates.Any(x => x == entity))
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Modified };
return true;
}
if (changeSet.Deletes.Any(x => x == entity))
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Deleted };
return true;
}
MetaType metaType = _context.Mapping.GetTable(key.EntityType).RowType;
if (_dataServices.IsCachedObject(metaType, entity))
{
entry = new ObjectStateEntry { EntityKey = key, Entity = entity, State = EntityState.Unchanged };
return true;
}
entry = null;
return false;
}
