01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: /* $Id: MergeRuleSet.java 426584 2006-07-28 16:01:47Z jeremias $ */
19:
20: package org.apache.xmlgraphics.xmp.merge;
21:
22: import java.util.Map;
23:
24: import org.apache.xmlgraphics.util.QName;
25: import org.apache.xmlgraphics.xmp.XMPProperty;
26:
27: /**
28: * Represents a set of rules used to merge to XMP properties. By default, all properties are
29: * merged by replacing any existing values with the value from the source XMP.
30: */
31: public class MergeRuleSet {
32:
33: private Map rules = new java.util.HashMap();
34: private PropertyMerger defaultMerger = new ReplacePropertyMerger();
35:
36: /** Main constructor. */
37: public MergeRuleSet() {
38: }
39:
40: /**
41: * Returns the PropertyMerger that shall be used when merging the given property.
42: * @param prop the property to be merged
43: * @return the PropertyMerger to be used for merging the property
44: */
45: public PropertyMerger getPropertyMergerFor(XMPProperty prop) {
46: PropertyMerger merger = (PropertyMerger) rules.get(prop
47: .getName());
48: return (merger != null ? merger : defaultMerger);
49: }
50:
51: /**
52: * Adds a merge rule to this set.
53: * @param propName the name of the property
54: * @param merger the property merger to be used for this property
55: */
56: public void addRule(QName propName, PropertyMerger merger) {
57: rules.put(propName, merger);
58: }
59:
60: }
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