/**
* 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.persistence;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Arrays;
import java.util.List;
import org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator;
import org.apache.hadoop.hive.ql.exec.vector.VectorHashKeyWrapper;
import org.apache.hadoop.hive.ql.exec.vector.VectorHashKeyWrapperBatch;
import org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression;
import org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpressionWriter;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.serde2.AbstractSerDe;
import org.apache.hadoop.hive.serde2.SerDeException;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.ObjectInspectorCopyOption;
import org.apache.hadoop.io.Writable;
@SuppressWarnings("deprecation")
public class MapJoinKeyObject extends MapJoinKey {
private static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
private Object[] key;
public MapJoinKeyObject(Object[] key) {
this.key = key;
}
public MapJoinKeyObject() {
this(EMPTY_OBJECT_ARRAY);
}
public Object[] getKeyObjects() {
return key;
}
public void setKeyObjects(Object[] key) {
this.key = key;
}
public int getKeyLength() {
return key.length;
}
@Override
public boolean hasAnyNulls(int fieldCount, boolean[] nullsafes) {
assert fieldCount == key.length;
if (key != null && key.length > 0) {
for (int i = 0; i < key.length; i++) {
if (key[i] == null && (nullsafes == null || !nullsafes[i])) {
return true;
}
}
}
return false;
}
@Override
public int hashCode() {
return ObjectInspectorUtils.writableArrayHashCode(key);
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
MapJoinKeyObject other = (MapJoinKeyObject) obj;
if (!Arrays.equals(key, other.key))
return false;
return true;
}
public void read(MapJoinObjectSerDeContext context, ObjectInputStream in, Writable container)
throws IOException, SerDeException {
container.readFields(in);
read(context, container);
}
public void read(MapJoinObjectSerDeContext context, Writable container) throws SerDeException {
read(context.getSerDe().getObjectInspector(), context.getSerDe().deserialize(container));
}
protected void read(ObjectInspector oi, Object obj) throws SerDeException {
@SuppressWarnings("unchecked")
List<Object> value = (List<Object>)ObjectInspectorUtils.copyToStandardObject(
obj, oi, ObjectInspectorCopyOption.WRITABLE);
if (value == null) {
key = EMPTY_OBJECT_ARRAY;
} else {
key = value.toArray();
}
}
@Override
public void write(MapJoinObjectSerDeContext context, ObjectOutputStream out)
throws IOException, SerDeException {
AbstractSerDe serde = context.getSerDe();
ObjectInspector objectInspector = context.getStandardOI();
Writable container = serde.serialize(key, objectInspector);
container.write(out);
}
public void readFromRow(Object[] fieldObjs, List<ObjectInspector> keyFieldsOI)
throws HiveException {
if (key == null || key.length != fieldObjs.length) {
key = new Object[fieldObjs.length];
}
for (int keyIndex = 0; keyIndex < fieldObjs.length; ++keyIndex) {
key[keyIndex] = (ObjectInspectorUtils.copyToStandardObject(fieldObjs[keyIndex],
keyFieldsOI.get(keyIndex), ObjectInspectorCopyOption.WRITABLE));
}
}
protected boolean[] getNulls() {
boolean[] nulls = null;
for (int i = 0; i < key.length; ++i) {
if (key[i] == null) {
if (nulls == null) {
nulls = new boolean[key.length];
}
nulls[i] = true;
}
}
return nulls;
}
public void readFromVector(VectorHashKeyWrapper kw, VectorExpressionWriter[] keyOutputWriters,
VectorHashKeyWrapperBatch keyWrapperBatch) throws HiveException {
if (key == null || key.length != keyOutputWriters.length) {
key = new Object[keyOutputWriters.length];
}
for (int keyIndex = 0; keyIndex < keyOutputWriters.length; ++keyIndex) {
key[keyIndex] = keyWrapperBatch.getWritableKeyValue(
kw, keyIndex, keyOutputWriters[keyIndex]);
}
}
}