MonoRail/Castle.MonoRail.ActiveRecordSupport/ARCommonUtils.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.MonoRail.ActiveRecordSupport
  16 {
  17         using Castle.ActiveRecord.Framework.Internal;
  18
  19
  20         public sealed class ARCommonUtils
  21         {
  22                 public static PrimaryKeyModel ObtainPKProperty(ActiveRecordModel model)
  23                 {
  24                         if (model == null) return null;
  25
  26                         ActiveRecordModel curModel = model;
  27
  28                         while (curModel != null)
  29                         {
  30                                 if (curModel.PrimaryKey != null)
  31                                 {
  32                                         return curModel.PrimaryKey;
  33                                 }
  34
  35                                 curModel = curModel.Parent;
  36                         }
  37
  38                         return null;
  39                 }
  40         }
  41 }