org.argeo.jcr/src/org/argeo/jcr/PropertyDiff.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
   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.argeo.jcr;
  17
  18 import javax.jcr.Value;
  19
  20 /** The result of the comparison of two JCR properties. */
  21 public class PropertyDiff {
  22         public final static Integer MODIFIED = 0;
  23         public final static Integer ADDED = 1;
  24         public final static Integer REMOVED = 2;
  25
  26         private final Integer type;
  27         private final String relPath;
  28         private final Value referenceValue;
  29         private final Value newValue;
  30
  31         public PropertyDiff(Integer type, String relPath, Value referenceValue,
  32                         Value newValue) {
  33                 super();
  34
  35                 if (type == MODIFIED) {
  36                         if (referenceValue == null || newValue == null)
  37                                 throw new ArgeoJcrException(
  38                                                 "Reference and new values must be specified.");
  39                 } else if (type == ADDED) {
  40                         if (referenceValue != null || newValue == null)
  41                                 throw new ArgeoJcrException(
  42                                                 "New value and only it must be specified.");
  43                 } else if (type == REMOVED) {
  44                         if (referenceValue == null || newValue != null)
  45                                 throw new ArgeoJcrException(
  46                                                 "Reference value and only it must be specified.");
  47                 } else {
  48                         throw new ArgeoJcrException("Unkown diff type " + type);
  49                 }
  50
  51                 if (relPath == null)
  52                         throw new ArgeoJcrException("Relative path must be specified");
  53
  54                 this.type = type;
  55                 this.relPath = relPath;
  56                 this.referenceValue = referenceValue;
  57                 this.newValue = newValue;
  58         }
  59
  60         public Integer getType() {
  61                 return type;
  62         }
  63
  64         public String getRelPath() {
  65                 return relPath;
  66         }
  67
  68         public Value getReferenceValue() {
  69                 return referenceValue;
  70         }
  71
  72         public Value getNewValue() {
  73                 return newValue;
  74         }
  75
  76 }