ActiveRecord/Castle.ActiveRecord/Framework/Scopes/ScopeUtil.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.ActiveRecord.Framework.Scopes
  16 {
  17         internal class ScopeUtil
  18         {
  19                 internal static ISessionScope FindPreviousScope(ISessionScope thisScope,
  20                         bool preferenceForTransactional)
  21                 {
  22                         return FindPreviousScope(thisScope, preferenceForTransactional, false);
  23                 }
  24
  25                 internal static ISessionScope FindPreviousScope(ISessionScope thisScope,
  26                         bool preferenceForTransactional, bool doNotReturnSessionScope)
  27                 {
  28                         object[] items = ThreadScopeAccessor.Instance.CurrentStack.ToArray();
  29
  30                         ISessionScope first = null;
  31
  32                         for (int i = 0; i < items.Length; i++)
  33                         {
  34                                 ISessionScope scope = items[i] as ISessionScope;
  35
  36                                 if (scope == thisScope) continue;
  37
  38                                 if (first == null) first = scope;
  39
  40                                 if (!preferenceForTransactional) break;
  41
  42                                 if (scope.ScopeType == SessionScopeType.Transactional)
  43                                 {
  44                                         return scope;
  45                                 }
  46                         }
  47
  48                         return doNotReturnSessionScope ? null : first;
  49                 }
  50         }
  51 }