org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedHashMap Maven / Gradle / Ivy
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* 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.optimized;
import java.io.IOException;
import org.apache.hadoop.hive.ql.exec.JoinUtil;
import org.apache.hadoop.hive.ql.exec.persistence.BytesBytesMultiHashMap;
import org.apache.hadoop.hive.ql.exec.persistence.MapJoinTableContainer;
import org.apache.hadoop.hive.ql.exec.persistence.MapJoinTableContainer.ReusableGetAdaptor;
import org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinBytesHashMap;
import org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinHashMapResult;
import org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinHashTableResult;
import org.apache.hadoop.hive.serde2.WriteBuffers.ByteSegmentRef;
public class VectorMapJoinOptimizedHashMap
extends VectorMapJoinOptimizedHashTable
implements VectorMapJoinBytesHashMap {
@Override
public VectorMapJoinHashMapResult createHashMapResult() {
return new HashMapResult();
}
public static class HashMapResult extends VectorMapJoinHashMapResult {
private BytesBytesMultiHashMap.Result bytesBytesMultiHashMapResult;
public HashMapResult() {
super();
bytesBytesMultiHashMapResult = new BytesBytesMultiHashMap.Result();
}
public BytesBytesMultiHashMap.Result bytesBytesMultiHashMapResult() {
return bytesBytesMultiHashMapResult;
}
@Override
public boolean hasRows() {
return (joinResult() == JoinUtil.JoinResult.MATCH);
}
@Override
public boolean isSingleRow() {
if (joinResult() != JoinUtil.JoinResult.MATCH) {
throw new RuntimeException("HashMapResult is not a match");
}
return bytesBytesMultiHashMapResult.isSingleRow();
}
@Override
public boolean isCappedCountAvailable() {
return false;
}
@Override
public int cappedCount() {
return 0;
}
@Override
public ByteSegmentRef first() {
if (joinResult() != JoinUtil.JoinResult.MATCH) {
throw new RuntimeException("HashMapResult is not a match");
}
return bytesBytesMultiHashMapResult.first();
}
@Override
public ByteSegmentRef next() {
return bytesBytesMultiHashMapResult.next();
}
@Override
public boolean isEof() {
return bytesBytesMultiHashMapResult.isEof();
}
@Override
public void forget() {
bytesBytesMultiHashMapResult.forget();
super.forget();
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("(" + super.toString() + ", ");
sb.append("isSingleRow " + (joinResult() == JoinUtil.JoinResult.MATCH ? isSingleRow() : "") + ")");
return sb.toString();
}
}
@Override
public JoinUtil.JoinResult lookup(byte[] keyBytes, int keyOffset, int keyLength,
VectorMapJoinHashMapResult hashMapResult) throws IOException {
HashMapResult implementationHashMapResult = (HashMapResult) hashMapResult;
JoinUtil.JoinResult joinResult =
doLookup(keyBytes, keyOffset, keyLength,
implementationHashMapResult.bytesBytesMultiHashMapResult(),
(VectorMapJoinHashTableResult) hashMapResult);
return joinResult;
}
public VectorMapJoinOptimizedHashMap(
MapJoinTableContainer originalTableContainer, ReusableGetAdaptor hashMapRowGetter) {
super(originalTableContainer, hashMapRowGetter);
}
}