1 /**
2 * Copyright 2005-2015 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.data.metadata;
17
18 import org.kuali.rice.krad.data.provider.CompositeMetadataProvider;
19
20 /**
21 * A component of {@link MetadataCommon} which specifies what to do when a duplicate data object, attribute, collection
22 * or reference is encountered during the merging performed by the {@link CompositeMetadataProvider}.
23 *
24 * @author Kuali Rice Team (rice.collab@kuali.org)
25 */
26 public enum MetadataMergeAction {
27 /**
28 * The default behavior. Unset attributes will be left alone.
29 */
30 MERGE,
31 /**
32 * If a match is found (same data object or attribute name), the existing object will be replaced completely by this
33 * one.
34 */
35 REPLACE,
36 /**
37 * If a match is found (same data object or attribute name), the existing object will be removed. (Any attribute
38 * except that forming the key (type or attribute name) can be left unset.)
39 */
40 REMOVE,
41 /**
42 * If a match is found (same data object or attribute name), the existing object will be left alone. The metadata
43 * object will only be included if there is not already an existing object.
44 */
45 NO_OVERRIDE
46 }