ActiveRecord/Castle.ActiveRecord/Framework/Queries/ActiveRecordCriteriaQuery.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.Queries
  16 {
  17         using System;
  18
  19         using NHibernate;
  20         using NHibernate.Criterion;
  21
  22         /// <summary>
  23         /// Criteria Query
  24         /// Note: This query can not be included in a MultiQuery.
  25         /// the problem is that NHibernate does not have a real CriteriaQuery class
  26         /// </summary>
  27         public class ActiveRecordCriteriaQuery : HqlBasedQuery
  28         {
  29                 // constructors will set EITHER criterias OR detachedCriteria
  30                 private readonly ICriterion[] criterias;
  31                 private readonly DetachedCriteria detachedCriteria;
  32
  33                 /// <summary>
  34                 /// Initializes a new instance of the <see cref="ActiveRecordCriteriaQuery"/> class.
  35                 /// </summary>
  36                 /// <param name="targetType">The target type.</param>
  37                 /// <param name="criterias">Criteria applied to the query</param>
  38                 public ActiveRecordCriteriaQuery(Type targetType, ICriterion[] criterias)
  39                         : base(targetType, string.Empty, null)
  40                 {
  41                         this.criterias = criterias;
  42                 }
  43
  44                 /// <summary>
  45                 /// Initializes a new instance of the <see cref="ActiveRecordCriteriaQuery"/> class.
  46                 /// </summary>
  47                 /// <param name="targetType">The target type.</param>
  48                 /// <param name="detachedCriteria">Criteria applied to the query</param>
  49                 public ActiveRecordCriteriaQuery(Type targetType, DetachedCriteria detachedCriteria)
  50                         : base(targetType, string.Empty, null)
  51                 {
  52                         this.detachedCriteria = detachedCriteria;
  53                 }
  54
  55                 /// <summary>
  56                 /// Executes the query.
  57                 /// </summary>
  58                 /// <param name="session">The <c>NHibernate</c>'s <see cref="ISession"/></param>
  59                 /// <returns><c>ArrayList</c> as an <c>object</c></returns>
  60                 protected override object InternalExecute(ISession session)
  61                 {
  62                         if (detachedCriteria != null)
  63                         {
  64                                 ICriteria criteria = detachedCriteria.GetExecutableCriteria(session);
  65
  66                                 return criteria.List();
  67                         }
  68                         else if (criterias != null)
  69                         {
  70                                 ICriteria criteria = session.CreateCriteria(RootType);
  71
  72                                 CriteriaHelper.AddCriterionToCriteria(criteria, criterias);
  73
  74                                 return criteria.List();
  75                         }
  76                         else
  77                         {
  78                                 return base.CreateQuery(session).List();
  79                         }
  80                 }
  81         }
  82 }