org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinHashTableResult Maven / Gradle / Ivy
/**
* 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.vector.mapjoin.hashtable;
import org.apache.hadoop.hive.ql.exec.JoinUtil;
/*
* Root abstract class for a hash table result.
*/
public abstract class VectorMapJoinHashTableResult {
private JoinUtil.JoinResult joinResult;
private int spillPartitionId;
public VectorMapJoinHashTableResult() {
joinResult = JoinUtil.JoinResult.NOMATCH;
spillPartitionId = -1;
}
/**
* @return The join result from the most recent hash map match, or hash multi-set / set contains
* call.
*/
public JoinUtil.JoinResult joinResult() {
return joinResult;
}
/**
* Set the current join result.
* @param joinResult
* The new join result.
*/
public void setJoinResult(JoinUtil.JoinResult joinResult) {
this.joinResult = joinResult;
}
/**
* Forget about the most recent hash table lookup or contains call.
*/
public void forget() {
joinResult = JoinUtil.JoinResult.NOMATCH;
}
/**
* Set the spill partition id.
*/
public void setSpillPartitionId(int spillPartitionId) {
this.spillPartitionId = spillPartitionId;
}
/**
* @return The Hybrid Grace spill partition id.
*/
public int spillPartitionId() {
return spillPartitionId;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("joinResult " + joinResult.name());
return sb.toString();
}
}