/**
* 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;
import java.util.concurrent.atomic.AtomicInteger;
/**
* A subset of compilation context that is passed to operators to get rid of some globals.
* Perhaps this should be rolled into main Context; however, some code necessitates storing the
* context in the operators for now, so this may not be advisable given how much stuff the main
* Context class contains.
* For now, only the operator sequence ID lives here.
*/
public class CompilationOpContext {
private final AtomicInteger opSeqId = new AtomicInteger(0);
public int nextOperatorId() {
return opSeqId.getAndIncrement();
}
}