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Java Source Code
/*
* Copyright 2014 the original author or authors.
*/*fromwww.java2s.com*/
* 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.springframework.sync;
/**
* <p>
* Operation that moves a value from the given "from" path to the given "path".
* Will throw a {@link PatchException} if either path is invalid or if the from path is non-nullable.
* </p>
*
* <p>
* NOTE: When dealing with lists, the move operation may effectively be a no-op.
* That's because the order of a list is probably dictated by a database query that produced the list.
* Moving things around in the list will have no bearing on the values of each item in the list.
* When the same list resource is retrieved again later, the order will again be decided by the query,
* effectively undoing any previous move operation.
* </p>
*
* @author Craig Walls
*/publicclass MoveOperation extends FromOperation {
/**
* Constructs the move operation.
* @param path The path to move the source value to. (e.g., '/foo/bar/4')
* @param from The source path from which a value will be moved. (e.g., '/foo/bar/5')
*/public MoveOperation(String path, String from) {
super("move", path, from);
}
@Override
<T> void perform(Object target, Class<T> type) {
addValue(target, popValueAtPath(target, from));
}
}