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1   /**
2    * Copyright 2005-2012 The Kuali Foundation
3    *
4    * Licensed under the Educational Community License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.opensource.org/licenses/ecl2.php
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.kuali.rice.krms.impl.rule;
17  
18  import org.apache.commons.lang.StringUtils;
19  import org.kuali.rice.krad.maintenance.MaintenanceDocument;
20  import org.kuali.rice.krad.rules.MaintenanceDocumentRuleBase;
21  import org.kuali.rice.krms.api.repository.term.TermDefinition;
22  import org.kuali.rice.krms.impl.repository.KrmsRepositoryServiceLocator;
23  import org.kuali.rice.krms.impl.repository.TermBo;
24  import org.kuali.rice.krms.impl.repository.TermBoService;
25  import org.kuali.rice.krms.impl.util.KRMSPropertyConstants;
26  
27  import java.util.HashMap;
28  import java.util.Map;
29  
30  public class TermBusRule extends MaintenanceDocumentRuleBase {
31  
32      @Override
33      protected boolean processCustomSaveDocumentBusinessRules(MaintenanceDocument document) {
34          boolean isValid = true;
35  
36          TermBo term = (TermBo) document.getNewMaintainableObject().getDataObject();
37          isValid &= validateId(term);
38          isValid &= validateDescriptionNamespace(term);
39  
40          return isValid;
41      }
42  
43      private boolean validateId(TermBo term) {
44          if (StringUtils.isNotBlank(term.getId())) {
45              TermDefinition termInDatabase = getTermBoService().getTermById(term.getId());
46              if ((termInDatabase  != null) && (!StringUtils.equals(termInDatabase.getId(), term.getId()))) {
47                  this.putFieldError(KRMSPropertyConstants.Term.TERM_ID, "error.term.duplicateId");
48                  return false;
49              }
50          }
51  
52          return true;
53      }
54  
55      /**
56       * Check if the name-namespace pair already exist.
57       * @param term
58       * @return true if the name-namespace pair is unique, false otherwise
59       */
60      private boolean validateDescriptionNamespace(TermBo term) {
61          if (term.getSpecification() != null && StringUtils.isNotBlank(term.getDescription()) && StringUtils.isNotBlank(
62                  term.getSpecification().getNamespace())) {
63  
64              Map<String, String> criteria = new HashMap<String, String>();
65  
66              criteria.put("description", term.getDescription());
67              criteria.put("specification.namespace", term.getSpecification().getNamespace());
68  
69              TermBo termInDatabase = getBoService().findByPrimaryKey(TermBo.class, criteria);
70  
71              if((termInDatabase != null) && (!StringUtils.equals(termInDatabase.getId(), term.getId()))) {
72                  this.putFieldError(KRMSPropertyConstants.Term.DESCRIPTION, "error.term.duplicateNameNamespace");
73                  return false;
74              }
75          }
76  
77          return true;
78      }
79  
80      public TermBoService getTermBoService() {
81          return KrmsRepositoryServiceLocator.getTermBoService();
82      }
83  
84  }