/**
* 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.tajo.plan.logical;
import org.apache.tajo.plan.PlanString;
public class LogicalRootNode extends UnaryNode implements Cloneable {
public LogicalRootNode(int pid) {
super(pid, NodeType.ROOT);
}
public String toString() {
return "Logical Plan Root\n\n" + getChild().toString();
}
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
@Override
public PlanString getPlanString() {
return new PlanString(this);
}
}