org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedStringHashMap 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.JoinResult;
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;
/*
* An multi-key hash map based on the BytesBytesMultiHashMap.
*/
public class VectorMapJoinOptimizedStringHashMap
extends VectorMapJoinOptimizedHashMap
implements VectorMapJoinBytesHashMap {
private VectorMapJoinOptimizedStringCommon stringCommon;
/*
@Override
public void putRow(BytesWritable currentKey, BytesWritable currentValue)
throws SerDeException, HiveException, IOException {
stringCommon.adaptPutRow((VectorMapJoinOptimizedHashTable) this, currentKey, currentValue);
}
*/
@Override
public JoinResult lookup(byte[] keyBytes, int keyStart, int keyLength,
VectorMapJoinHashMapResult hashMapResult) throws IOException {
SerializedBytes serializedBytes = stringCommon.serialize(keyBytes, keyStart, keyLength);
return super.lookup(serializedBytes.bytes, serializedBytes.offset, serializedBytes.length,
hashMapResult);
}
public VectorMapJoinOptimizedStringHashMap(boolean isOuterJoin,
MapJoinTableContainer originalTableContainer, ReusableGetAdaptor hashMapRowGetter) {
super(originalTableContainer, hashMapRowGetter);
stringCommon = new VectorMapJoinOptimizedStringCommon(isOuterJoin);
}
}