/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: NoReplacePropertyMerger.java 426584 2006-07-28 16:01:47Z jeremias $ */
package org.apache.xmlgraphics.xmp.merge;
import org.apache.xmlgraphics.xmp.Metadata;
import org.apache.xmlgraphics.xmp.XMPProperty;
/**
* A basic PropertyMerger which only sets a value in the target metadata if there's not already
* another value.
*/
public class NoReplacePropertyMerger implements PropertyMerger {
/**
* @see org.apache.xmlgraphics.xmp.merge.PropertyMerger#merge(
* org.apache.xmlgraphics.xmp.XMPProperty, org.apache.xmlgraphics.xmp.Metadata)
*/
public void merge(XMPProperty sourceProp, Metadata target) {
XMPProperty prop = target.getProperty(sourceProp.getName());
if (prop == null) {
target.setProperty(sourceProp);
}
}
}