org.apache.jackrabbit.oak.plugins.commit.JcrLastModifiedConflictHandler Maven / Gradle / Ivy
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* 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.
*/
package org.apache.jackrabbit.oak.plugins.commit;
import static org.apache.jackrabbit.JcrConstants.JCR_LASTMODIFIED;
import static org.apache.jackrabbit.util.ISO8601.parse;
import java.util.Calendar;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.api.Type;
import org.apache.jackrabbit.oak.spi.commit.PartialConflictHandler;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
public class JcrLastModifiedConflictHandler implements PartialConflictHandler {
@Override
public Resolution addExistingProperty(NodeBuilder parent, PropertyState ours,
PropertyState theirs) {
if (isLastModified(ours)) {
merge(parent, ours, theirs);
return Resolution.MERGED;
}
return null;
}
@Override
public Resolution changeDeletedProperty(NodeBuilder parent, PropertyState ours) {
return null;
}
@Override
public Resolution changeChangedProperty(NodeBuilder parent, PropertyState ours,
PropertyState theirs) {
if (isLastModified(ours)) {
merge(parent, ours, theirs);
return Resolution.MERGED;
}
return null;
}
private static void merge(NodeBuilder parent, PropertyState ours,
PropertyState theirs) {
Calendar o = parse(ours.getValue(Type.DATE));
Calendar t = parse(theirs.getValue(Type.DATE));
// pick & set newer one
if (o.before(t)) {
parent.setProperty(JCR_LASTMODIFIED, t);
} else {
parent.setProperty(JCR_LASTMODIFIED, o);
}
}
private static boolean isLastModified(PropertyState p) {
return JCR_LASTMODIFIED.equals(p.getName());
}
@Override
public Resolution deleteDeletedProperty(NodeBuilder parent, PropertyState ours) {
return null;
}
@Override
public Resolution deleteChangedProperty(NodeBuilder parent, PropertyState theirs) {
return null;
}
@Override
public Resolution addExistingNode(NodeBuilder parent, String name, NodeState ours, NodeState theirs) {
return null;
}
@Override
public Resolution changeDeletedNode(NodeBuilder parent, String name, NodeState ours) {
return null;
}
@Override
public Resolution deleteChangedNode(NodeBuilder parent, String name, NodeState theirs) {
return null;
}
@Override
public Resolution deleteDeletedNode(NodeBuilder parent, String name) {
return null;
}
}