io.trino.sql.planner.plan.ChildReplacer Maven / Gradle / Ivy
/*
* 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 io.trino.sql.planner.plan;
import java.util.List;
public final class ChildReplacer
{
private ChildReplacer() {}
/**
* Return an identical copy of the given node with its children replaced
*/
public static PlanNode replaceChildren(PlanNode node, List children)
{
for (int i = 0; i < node.getSources().size(); i++) {
if (children.get(i) != node.getSources().get(i)) {
return node.replaceChildren(children);
}
}
return node;
}
}