/**
* 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.fast;
import java.io.IOException;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.serde2.binarysortable.fast.BinarySortableDeserializeRead;
import org.apache.hadoop.hive.serde2.typeinfo.PrimitiveTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
import org.apache.hadoop.io.BytesWritable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/*
* An single byte array value hash map optimized for vector map join.
*/
public class VectorMapJoinFastStringCommon {
public static final Logger LOG = LoggerFactory.getLogger(VectorMapJoinFastStringCommon.class);
private boolean isOuterJoin;
private BinarySortableDeserializeRead keyBinarySortableDeserializeRead;
public void adaptPutRow(VectorMapJoinFastBytesHashTable hashTable,
BytesWritable currentKey, BytesWritable currentValue) throws HiveException, IOException {
byte[] keyBytes = currentKey.getBytes();
int keyLength = currentKey.getLength();
keyBinarySortableDeserializeRead.set(keyBytes, 0, keyLength);
try {
if (!keyBinarySortableDeserializeRead.readNextField()) {
return;
}
} catch (Exception e) {
throw new HiveException(
"\nDeserializeRead details: " +
keyBinarySortableDeserializeRead.getDetailedReadPositionString() +
"\nException: " + e.toString());
}
hashTable.add(
keyBinarySortableDeserializeRead.currentBytes,
keyBinarySortableDeserializeRead.currentBytesStart,
keyBinarySortableDeserializeRead.currentBytesLength,
currentValue);
}
public VectorMapJoinFastStringCommon(boolean isOuterJoin) {
this.isOuterJoin = isOuterJoin;
PrimitiveTypeInfo[] primitiveTypeInfos = { TypeInfoFactory.stringTypeInfo };
keyBinarySortableDeserializeRead =
new BinarySortableDeserializeRead(
primitiveTypeInfos,
/* useExternalBuffer */ false);
}
}