/**
* 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;
import java.sql.Timestamp;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.hive.common.type.HiveChar;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.common.type.HiveVarchar;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.serde2.io.ByteWritable;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.serde2.io.ShortWritable;
import org.apache.hadoop.hive.serde2.io.TimestampWritable;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector.PrimitiveCategory;
import org.apache.hadoop.hive.serde2.objectinspector.StructField;
import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;
import org.apache.hadoop.io.BooleanWritable;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.FloatWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
/**
* This class is used as a static factory for VectorColumnAssign.
* Is capable of building assigners from expression nodes or from object inspectors.
*/
public class VectorColumnAssignFactory {
private static abstract class VectorColumnAssignVectorBase<T extends ColumnVector>
implements VectorColumnAssign {
protected VectorizedRowBatch outBatch;
protected T outCol;
protected void copyValue(T in, int srcIndex, int destIndex) throws HiveException {
throw new HiveException("Internal error: should not reach here");
}
@SuppressWarnings("unchecked")
@Override
public void assignVectorValue(VectorizedRowBatch inBatch, int batchIndex,
int valueColumnIndex, int destIndex) throws HiveException {
T in = (T) inBatch.cols[valueColumnIndex];
if (in.isRepeating) {
if (in.noNulls) {
copyValue(in, 0, destIndex);
}
else {
assignNull(destIndex);
}
}
else {
int srcIndex = inBatch.selectedInUse ? inBatch.selected[batchIndex] : batchIndex;
if (in.noNulls || !in.isNull[srcIndex]) {
copyValue(in, srcIndex, destIndex);
}
else {
assignNull(destIndex);
}
}
}
public VectorColumnAssign init(VectorizedRowBatch out, T cv) {
this.outBatch = out;
this.outCol = cv;
return this;
}
protected void assignNull(int index) {
VectorizedBatchUtil.setNullColIsNullValue(outCol, index);
}
@Override
public void reset() {
}
@Override
public void assignObjectValue(Object value, int destIndex) throws HiveException {
throw new HiveException("Internal error: should not reach here");
}
}
private static abstract class VectorLongColumnAssign
extends VectorColumnAssignVectorBase<LongColumnVector> {
protected void assignLong(long value, int destIndex) {
outCol.vector[destIndex] = value;
}
}
private static abstract class VectorDoubleColumnAssign
extends VectorColumnAssignVectorBase<DoubleColumnVector> {
protected void assignDouble(double value, int destIndex) {
outCol.vector[destIndex] = value;
}
}
private static abstract class VectorBytesColumnAssign
extends VectorColumnAssignVectorBase<BytesColumnVector> {
byte[] pad = new byte[BytesColumnVector.DEFAULT_BUFFER_SIZE];
int padUsed = 0;
protected void assignBytes(byte[] buffer, int start, int length, int destIndex) {
if (padUsed + length <= pad.length) {
System.arraycopy(buffer, start,
pad, padUsed, length);
outCol.vector[destIndex] = pad;
outCol.start[destIndex] = padUsed;
outCol.length[destIndex] = length;
padUsed += length;
}
else {
outCol.vector[destIndex] = Arrays.copyOfRange(buffer,
start, length);
outCol.start[destIndex] = 0;
outCol.length[destIndex] = length;
}
}
@Override
public void reset() {
super.reset();
padUsed = 0;
}
}
private static abstract class VectorDecimalColumnAssign
extends VectorColumnAssignVectorBase<DecimalColumnVector> {
protected void assignDecimal(HiveDecimal value, int index) {
outCol.set(index, value);
}
protected void assignDecimal(HiveDecimalWritable hdw, int index) {
outCol.set(index, hdw);
}
}
public static VectorColumnAssign[] buildAssigners(VectorizedRowBatch outputBatch)
throws HiveException {
VectorColumnAssign[] vca = new VectorColumnAssign[outputBatch.cols.length];
for(int i=0; i<vca.length; ++i) {
ColumnVector cv = outputBatch.cols[i];
if (cv == null) {
continue;
}
else if (cv instanceof LongColumnVector) {
vca[i] = new VectorLongColumnAssign() {
@Override
protected void copyValue(LongColumnVector in, int srcIndex, int destIndex) {
assignLong(in.vector[srcIndex], destIndex);
}
}.init(outputBatch, (LongColumnVector) cv);
}
else if (cv instanceof DoubleColumnVector) {
vca[i] = new VectorDoubleColumnAssign() {
@Override
protected void copyValue(DoubleColumnVector in, int srcIndex, int destIndex) {
assignDouble(in.vector[srcIndex], destIndex);
}
}.init(outputBatch, (DoubleColumnVector) cv);
}
else if (cv instanceof BytesColumnVector) {
vca[i] = new VectorBytesColumnAssign() {
@Override
protected void copyValue(BytesColumnVector src, int srcIndex, int destIndex) {
assignBytes(src.vector[srcIndex], src.start[srcIndex], src.length[srcIndex], destIndex);
}
}.init(outputBatch, (BytesColumnVector) cv);
}
else if (cv instanceof DecimalColumnVector) {
vca[i] = new VectorDecimalColumnAssign() {
@Override
protected void copyValue(DecimalColumnVector src, int srcIndex, int destIndex) {
assignDecimal(src.vector[srcIndex], destIndex);
}
};
}
else {
throw new HiveException("Unimplemented vector column type: " + cv.getClass().getName());
}
}
return vca;
}
public static VectorColumnAssign buildObjectAssign(VectorizedRowBatch outputBatch,
int outColIndex, ObjectInspector objInspector) throws HiveException {
PrimitiveObjectInspector poi = (PrimitiveObjectInspector) objInspector;
return buildObjectAssign(outputBatch, outColIndex, poi.getPrimitiveCategory());
}
public static VectorColumnAssign buildObjectAssign(VectorizedRowBatch outputBatch,
int outColIndex, PrimitiveCategory category) throws HiveException {
VectorColumnAssign outVCA = null;
ColumnVector destCol = outputBatch.cols[outColIndex];
if (destCol == null) {
switch(category) {
case VOID:
outVCA = new VectorLongColumnAssign() {
// This is a dummy assigner
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
// This is no-op, there is no column to assign to and val is expected to be null
assert (val == null);
}
};
break;
default:
throw new HiveException("Incompatible (null) vector column and primitive category " +
category);
}
} else if (destCol instanceof LongColumnVector) {
switch(category) {
case BOOLEAN:
outVCA = new VectorLongColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
BooleanWritable bw = (BooleanWritable) val;
assignLong(bw.get() ? 1:0, destIndex);
}
}
}.init(outputBatch, (LongColumnVector) destCol);
break;
case BYTE:
outVCA = new VectorLongColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
ByteWritable bw = (ByteWritable) val;
assignLong(bw.get(), destIndex);
}
}
}.init(outputBatch, (LongColumnVector) destCol);
break;
case SHORT:
outVCA = new VectorLongColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
ShortWritable bw = (ShortWritable) val;
assignLong(bw.get(), destIndex);
}
}
}.init(outputBatch, (LongColumnVector) destCol);
break;
case INT:
outVCA = new VectorLongColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
IntWritable bw = (IntWritable) val;
assignLong(bw.get(), destIndex);
}
}
}.init(outputBatch, (LongColumnVector) destCol);
break;
case LONG:
outVCA = new VectorLongColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
LongWritable bw = (LongWritable) val;
assignLong(bw.get(), destIndex);
}
}
}.init(outputBatch, (LongColumnVector) destCol);
break;
case TIMESTAMP:
outVCA = new VectorLongColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
TimestampWritable bw = (TimestampWritable) val;
Timestamp t = bw.getTimestamp();
assignLong(TimestampUtils.getTimeNanoSec(t), destIndex);
}
}
}.init(outputBatch, (LongColumnVector) destCol);
break;
case DATE:
outVCA = new VectorLongColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
DateWritable bw = (DateWritable) val;
assignLong(bw.getDays(), destIndex);
}
}
}.init(outputBatch, (LongColumnVector) destCol);
break;
default:
throw new HiveException("Incompatible Long vector column and primitive category " +
category);
}
}
else if (destCol instanceof DoubleColumnVector) {
switch(category) {
case DOUBLE:
outVCA = new VectorDoubleColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
DoubleWritable bw = (DoubleWritable) val;
assignDouble(bw.get(), destIndex);
}
}
}.init(outputBatch, (DoubleColumnVector) destCol);
break;
case FLOAT:
outVCA = new VectorDoubleColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
FloatWritable bw = (FloatWritable) val;
assignDouble(bw.get(), destIndex);
}
}
}.init(outputBatch, (DoubleColumnVector) destCol);
break;
default:
throw new HiveException("Incompatible Double vector column and primitive category " +
category);
}
}
else if (destCol instanceof BytesColumnVector) {
switch(category) {
case BINARY:
outVCA = new VectorBytesColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
BytesWritable bw = (BytesWritable) val;
byte[] bytes = bw.getBytes();
assignBytes(bytes, 0, bw.getLength(), destIndex);
}
}
}.init(outputBatch, (BytesColumnVector) destCol);
break;
case STRING:
outVCA = new VectorBytesColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
} else {
Text bw = (Text) val;
byte[] bytes = bw.getBytes();
assignBytes(bytes, 0, bw.getLength(), destIndex);
}
}
}.init(outputBatch, (BytesColumnVector) destCol);
break;
case VARCHAR:
outVCA = new VectorBytesColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
} else {
HiveVarchar hiveVarchar = (HiveVarchar) val;
byte[] bytes = hiveVarchar.getValue().getBytes();
assignBytes(bytes, 0, bytes.length, destIndex);
}
}
}.init(outputBatch, (BytesColumnVector) destCol);
break;
case CHAR:
outVCA = new VectorBytesColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
} else {
// We store CHAR type stripped of pads.
HiveChar hiveChar = (HiveChar) val;
byte[] bytes = hiveChar.getStrippedValue().getBytes();
assignBytes(bytes, 0, bytes.length, destIndex);
}
}
}.init(outputBatch, (BytesColumnVector) destCol);
break;
default:
throw new HiveException("Incompatible Bytes vector column and primitive category " +
category);
}
}
else if (destCol instanceof DecimalColumnVector) {
switch(category) {
case DECIMAL:
outVCA = new VectorDecimalColumnAssign() {
@Override
public void assignObjectValue(Object val, int destIndex) throws HiveException {
if (val == null) {
assignNull(destIndex);
}
else {
if (val instanceof HiveDecimal) {
assignDecimal((HiveDecimal) val, destIndex);
} else {
assignDecimal((HiveDecimalWritable) val, destIndex);
}
}
}
}.init(outputBatch, (DecimalColumnVector) destCol);
break;
default:
throw new HiveException("Incompatible Decimal vector column and primitive category " +
category);
}
}
else {
throw new HiveException("Unknown vector column type " + destCol.getClass().getName());
}
return outVCA;
}
/**
* Builds the assigners from an object inspector and from a list of columns.
* @param outputBatch The batch to which the assigners are bound
* @param outputOI The row object inspector
* @param columnMap Vector column map
* @param outputColumnNames Column names, used both to find the vector columns and the
* @return
* @throws HiveException
*/
public static VectorColumnAssign[] buildAssigners(VectorizedRowBatch outputBatch,
ObjectInspector outputOI,
Map<String, Integer> columnMap,
List<String> outputColumnNames) throws HiveException {
StructObjectInspector soi = (StructObjectInspector) outputOI;
VectorColumnAssign[] vcas = new VectorColumnAssign[outputColumnNames.size()];
for (int i=0; i<outputColumnNames.size(); ++i) {
String columnName = outputColumnNames.get(i);
Integer columnIndex = columnMap.get(columnName);
StructField columnRef = soi.getStructFieldRef(columnName);
ObjectInspector valueOI = columnRef.getFieldObjectInspector();
vcas[i] = buildObjectAssign(outputBatch, columnIndex, valueOI);
}
return vcas;
}
public static VectorColumnAssign[] buildAssigners(VectorizedRowBatch outputBatch,
Writable[] writables) throws HiveException {
VectorColumnAssign[] vcas = new VectorColumnAssign[outputBatch.numCols];
for (int i = 0; i < writables.length; ++i) {
if (writables[i] == null) {
assert(outputBatch.cols[i] == null);
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.VOID);
} else if (writables[i] instanceof ByteWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.BYTE);
} else if (writables[i] instanceof ShortWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.SHORT);
} else if (writables[i] instanceof IntWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.INT);
} else if (writables[i] instanceof LongWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.LONG);
} else if (writables[i] instanceof FloatWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.FLOAT);
} else if (writables[i] instanceof DoubleWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.DOUBLE);
} else if (writables[i] instanceof Text) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.STRING);
} else if (writables[i] instanceof BytesWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.BINARY);
} else if (writables[i] instanceof TimestampWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.TIMESTAMP);
} else if (writables[i] instanceof BooleanWritable) {
vcas[i] = buildObjectAssign(outputBatch, i, PrimitiveCategory.BOOLEAN);
} else {
throw new HiveException("Unimplemented vector assigner for writable type " +
writables[i].getClass());
}
}
return vcas;
}
}