/**
* 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.hadoop.hive.ql.exec;
import java.io.Serializable;
import org.apache.hadoop.hive.ql.CompilationOpContext;
import org.apache.hadoop.hive.ql.plan.OperatorDesc;
/**
* Terminal Operator Base Class.
**/
public abstract class TerminalOperator<T extends OperatorDesc> extends
Operator<T> implements Serializable {
private static final long serialVersionUID = 1L;
/** Kryo ctor. */
protected TerminalOperator() {
super();
}
public TerminalOperator(CompilationOpContext ctx) {
super(ctx);
}
@Override
public String getName() {
return getOperatorName();
}
static public String getOperatorName() {
return "END";
}
}