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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.
*/
package org.apache.tuscany.das.rdb.util;
import java.util.Iterator;
import java.util.List;
import commonj.sdo.ChangeSummary;
import commonj.sdo.DataObject;
import commonj.sdo.Property;
import commonj.sdo.ChangeSummary.Setting;
import commonj.sdo.helper.DataFactory;
/**
*/
public class DataObjectUtil {
//Utilities
public static DataObject getRestoredCopy(DataObject changedDO) {
DataObject changedCopy = getCopy(changedDO);
restoreAttributeValues(changedCopy, changedDO);
return changedCopy;
}
public static DataObject getCopy(DataObject original) {
DataObject copy = DataFactory.INSTANCE.create(original.getType());
//Fill in values
Iterator i = original.getType().getProperties().iterator();
while (i.hasNext()) {
Property feature = (Property) i.next();
copy.set(feature, original.get(feature));
}
return copy;
}
/**
* @param changedCopy
* @return
*/
private static void restoreAttributeValues(DataObject changedCopy, DataObject changedDO) {
ChangeSummary changeSummary = changedDO.getDataGraph().getChangeSummary();
List changes = changeSummary.getOldValues(changedDO);
if ( changes == null )
return;
Iterator i = changes.iterator();
while (i.hasNext()) {
Setting s = (Setting) i.next();
if ( s.getProperty().getType().isDataType() )
changedCopy.set(s.getProperty(), s.getValue());
}
}
}
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