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1   /**
2    * Copyright 2005-2014 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.krad.datadictionary.validation.processor;
17  
18  import org.apache.commons.lang.StringUtils;
19  import org.kuali.rice.krad.datadictionary.exception.AttributeValidationException;
20  import org.kuali.rice.krad.datadictionary.validation.AttributeValueReader;
21  import org.kuali.rice.krad.datadictionary.validation.ValidationUtils;
22  import org.kuali.rice.krad.datadictionary.validation.constraint.Constraint;
23  import org.kuali.rice.krad.datadictionary.validation.constraint.PrerequisiteConstraint;
24  import org.kuali.rice.krad.datadictionary.validation.result.ConstraintValidationResult;
25  import org.kuali.rice.krad.datadictionary.validation.result.DictionaryValidationResult;
26  import org.kuali.rice.krad.datadictionary.validation.result.ProcessorResult;
27  import org.kuali.rice.krad.uif.UifConstants;
28  
29  /**
30   * @author Kuali Rice Team (rice.collab@kuali.org)
31   */
32  public class PrerequisiteConstraintProcessor extends BasePrerequisiteConstraintProcessor<PrerequisiteConstraint> {
33  
34      private static final String CONSTRAINT_NAME = "prerequisite constraint";
35      private static final String FALLBACK_KEY = "prerequisiteFallback";
36  
37      /**
38       * {@inheritDoc}
39       */
40      @Override
41      public ProcessorResult process(DictionaryValidationResult result, Object value, PrerequisiteConstraint constraint,
42              AttributeValueReader attributeValueReader) throws AttributeValidationException {
43  
44          if (ValidationUtils.isNullOrEmpty(value)) {
45              return new ProcessorResult(result.addSkipped(attributeValueReader, CONSTRAINT_NAME));
46          }
47  
48          ConstraintValidationResult constraintValidationResult = processPrerequisiteConstraint(constraint,
49                  attributeValueReader);
50  
51          if (constraint != null) {
52              if (StringUtils.isNotBlank(constraint.getMessageKey())) {
53                  constraintValidationResult.setConstraintLabelKey(constraint.getMessageKey());
54              } else {
55                  constraintValidationResult.setConstraintLabelKey(
56                          UifConstants.Messages.VALIDATION_MSG_KEY_PREFIX + FALLBACK_KEY);
57              }
58              constraintValidationResult.setErrorParameters(constraint.getValidationMessageParamsArray());
59          }
60  
61          result.addConstraintValidationResult(attributeValueReader, constraintValidationResult);
62  
63          return new ProcessorResult(constraintValidationResult);
64      }
65  
66      @Override
67      public String getName() {
68          return CONSTRAINT_NAME;
69      }
70  
71      /**
72       * @see org.kuali.rice.krad.datadictionary.validation.processor.ConstraintProcessor#getConstraintType()
73       */
74      @Override
75      public Class<? extends Constraint> getConstraintType() {
76          return PrerequisiteConstraint.class;
77      }
78  
79  }