org.argeo.server.jcr/newsrc/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 import org.argeo.ArgeoException;
  21
  22 /** The result of the comparison of two JCR properties. */
  23 public class PropertyDiff {
  24         public final static Integer MODIFIED = 0;
  25         public final static Integer ADDED = 1;
  26         public final static Integer REMOVED = 2;
  27
  28         private final Integer type;
  29         private final String relPath;
  30         private final Value referenceValue;
  31         private final Value newValue;
  32
  33         public PropertyDiff(Integer type, String relPath, Value referenceValue,
  34                         Value newValue) {
  35                 super();
  36
  37                 if (type == MODIFIED) {
  38                         if (referenceValue == null || newValue == null)
  39                                 throw new ArgeoException(
  40                                                 "Reference and new values must be specified.");
  41                 } else if (type == ADDED) {
  42                         if (referenceValue != null || newValue == null)
  43                                 throw new ArgeoException(
  44                                                 "New value and only it must be specified.");
  45                 } else if (type == REMOVED) {
  46                         if (referenceValue == null || newValue != null)
  47                                 throw new ArgeoException(
  48                                                 "Reference value and only it must be specified.");
  49                 } else {
  50                         throw new ArgeoException("Unkown diff type " + type);
  51                 }
  52
  53                 if (relPath == null)
  54                         throw new ArgeoException("Relative path must be specified");
  55
  56                 this.type = type;
  57                 this.relPath = relPath;
  58                 this.referenceValue = referenceValue;
  59                 this.newValue = newValue;
  60         }
  61
  62         public Integer getType() {
  63                 return type;
  64         }
  65
  66         public String getRelPath() {
  67                 return relPath;
  68         }
  69
  70         public Value getReferenceValue() {
  71                 return referenceValue;
  72         }
  73
  74         public Value getNewValue() {
  75                 return newValue;
  76         }
  77
  78 }