HasVersionHistoryEvaluator


1   /*
2    * Copyright (C) 2005 Alfresco, Inc.
3    *
4    * Licensed under the Mozilla Public License version 1.1 
5    * with a permitted attribution clause. You may obtain a
6    * copy of the License at
7    *
8    *   http://www.alfresco.org/legal/license.txt
9    *
10   * Unless required by applicable law or agreed to in writing,
11   * software distributed under the License is distributed on an
12   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13   * either express or implied. See the License for the specific
14   * language governing permissions and limitations under the
15   * License.
16   */
17  package org.alfresco.repo.action.evaluator;
18  
19  import java.util.List  ;
20  
21  import org.alfresco.model.ContentModel;
22  import org.alfresco.service.cmr.action.ActionCondition;
23  import org.alfresco.service.cmr.action.ParameterDefinition;
24  import org.alfresco.service.cmr.repository.NodeRef;
25  import org.alfresco.service.cmr.repository.NodeService;
26  import org.alfresco.service.cmr.version.VersionHistory;
27  import org.alfresco.service.cmr.version.VersionService;
28  
29  /**
30   * Has version history evaluator
31   * 
32   * @author Roy Wetherall
33   */
34  public class HasVersionHistoryEvaluator extends ActionConditionEvaluatorAbstractBase
35  {
36      /**
37       * Evaluator constants
38       */
39      public static final String   NAME = "has-version-history";
40      
41      /**
42       * The node service
43       */
44      private NodeService nodeService;
45      
46      private VersionService versionService;
47      
48      /**
49       * Set node service
50       * 
51       * @param nodeService  the node service
52       */
53      public void setNodeService(NodeService nodeService) 
54      {
55          this.nodeService = nodeService;
56      }
57      
58      public void setVersionService(VersionService versionService)
59      {
60          this.versionService = versionService;
61      }
62      
63      /**
64       * @see org.alfresco.repo.action.evaluator.ActionConditionEvaluatorAbstractBase#evaluateImpl(org.alfresco.service.cmr.action.ActionCondition, org.alfresco.service.cmr.repository.NodeRef)
65       */
66      public boolean evaluateImpl(ActionCondition ruleCondition, NodeRef actionedUponNodeRef)
67      {
68          boolean result = false;
69          
70          if (this.nodeService.exists(actionedUponNodeRef) == true && 
71              this.nodeService.hasAspect(actionedUponNodeRef, ContentModel.ASPECT_VERSIONABLE) == true)
72          {
73              VersionHistory versionHistory = this.versionService.getVersionHistory(actionedUponNodeRef);
74              if (versionHistory != null && versionHistory.getAllVersions().size() != 0)
75              {
76                  result = true;
77              }
78          }
79          
80          return result;
81      }
82  
83      /**
84       * @see org.alfresco.repo.action.ParameterizedItemAbstractBase#addParameterDefintions(java.util.List)
85       */
86      @Override  
87      protected void addParameterDefintions(List  <ParameterDefinition> paramList) 
88      {
89      }
90  
91  }
92
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