| /* |
| * 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.spi.state; |
| |
| import org.apache.jackrabbit.oak.api.PropertyState; |
| |
| /** |
| * Helper class for comparing the equality of node states based on the |
| * content diff mechanism. |
| */ |
| public class EqualsDiff implements NodeStateDiff { |
| |
| /** |
| * Diffs the given node states and returns {@code true} if there are no |
| * differences. |
| * |
| * @param before before state |
| * @param after after state |
| * @return {@code true} if the states are equal, {@code false} otherwise |
| */ |
| public static boolean equals(NodeState before, NodeState after) { |
| return before.exists() == after.exists() |
| && after.compareAgainstBaseState(before, new EqualsDiff()); |
| } |
| |
| /** |
| * Diffs the given node states and returns {@code true} if there are |
| * differences within the properties or direct child nodes. |
| * |
| * @param before before state |
| * @param after after state |
| * @return {@code true} if there are modifications, {@code false} otherwise |
| */ |
| public static boolean modified(NodeState before, NodeState after) { |
| return !after.compareAgainstBaseState(before, new EqualsDiff() { |
| @Override |
| public boolean childNodeChanged( |
| String name, NodeState before, NodeState after) { |
| return true; |
| } |
| }); |
| } |
| |
| @Override |
| public boolean propertyAdded(PropertyState after) { |
| return false; |
| } |
| |
| @Override |
| public boolean propertyChanged(PropertyState before, PropertyState after) { |
| return false; |
| } |
| |
| @Override |
| public boolean propertyDeleted(PropertyState before) { |
| return false; |
| } |
| |
| @Override |
| public boolean childNodeAdded(String name, NodeState after) { |
| return false; |
| } |
| |
| @Override |
| public boolean childNodeChanged( |
| String name, NodeState before, NodeState after) { |
| return after.compareAgainstBaseState(before, this); |
| } |
| |
| @Override |
| public boolean childNodeDeleted(String name, NodeState before) { |
| return false; |
| } |
| |
| } |