/**
* 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.io.IOException;
import java.sql.Timestamp;
import java.util.List;
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.ObjectInspector.Category;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
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.DataOutputBuffer;
import org.apache.hadoop.io.FloatWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
public class VectorizedBatchUtil {
/**
* Sets the IsNull value for ColumnVector at specified index
* @param cv
* @param rowIndex
*/
public static void setNullColIsNullValue(ColumnVector cv, int rowIndex) {
cv.isNull[rowIndex] = true;
if (cv.noNulls) {
cv.noNulls = false;
}
}
/**
* Iterates thru all the column vectors and sets noNull to
* specified value.
*
* @param batch
* Batch on which noNull is set
*/
public static void setNoNullFields(VectorizedRowBatch batch) {
for (int i = 0; i < batch.numCols; i++) {
batch.cols[i].noNulls = true;
}
}
/**
* Iterates thru all the columns in a given row and populates the batch
* @param row Deserialized row object
* @param oi Object insepector for that row
* @param rowIndex index to which the row should be added to batch
* @param batch Vectorized batch to which the row is added at rowIndex
* @throws HiveException
*/
public static void addRowToBatch(Object row, StructObjectInspector oi,
int rowIndex,
VectorizedRowBatch batch,
DataOutputBuffer buffer
) throws HiveException {
List<? extends StructField> fieldRefs = oi.getAllStructFieldRefs();
// Iterate thru the cols and load the batch
for (int i = 0; i < fieldRefs.size(); i++) {
Object fieldData = oi.getStructFieldData(row, fieldRefs.get(i));
ObjectInspector foi = fieldRefs.get(i).getFieldObjectInspector();
// Vectorization only supports PRIMITIVE data types. Assert the same
assert (foi.getCategory() == Category.PRIMITIVE);
// Get writable object
PrimitiveObjectInspector poi = (PrimitiveObjectInspector) foi;
Object writableCol = poi.getPrimitiveWritableObject(fieldData);
// NOTE: The default value for null fields in vectorization is 1 for int types, NaN for
// float/double. String types have no default value for null.
switch (poi.getPrimitiveCategory()) {
case BOOLEAN: {
LongColumnVector lcv = (LongColumnVector) batch.cols[i];
if (writableCol != null) {
lcv.vector[rowIndex] = ((BooleanWritable) writableCol).get() ? 1 : 0;
lcv.isNull[rowIndex] = false;
} else {
lcv.vector[rowIndex] = 1;
setNullColIsNullValue(lcv, rowIndex);
}
}
break;
case BYTE: {
LongColumnVector lcv = (LongColumnVector) batch.cols[i];
if (writableCol != null) {
lcv.vector[rowIndex] = ((ByteWritable) writableCol).get();
lcv.isNull[rowIndex] = false;
} else {
lcv.vector[rowIndex] = 1;
setNullColIsNullValue(lcv, rowIndex);
}
}
break;
case SHORT: {
LongColumnVector lcv = (LongColumnVector) batch.cols[i];
if (writableCol != null) {
lcv.vector[rowIndex] = ((ShortWritable) writableCol).get();
lcv.isNull[rowIndex] = false;
} else {
lcv.vector[rowIndex] = 1;
setNullColIsNullValue(lcv, rowIndex);
}
}
break;
case INT: {
LongColumnVector lcv = (LongColumnVector) batch.cols[i];
if (writableCol != null) {
lcv.vector[rowIndex] = ((IntWritable) writableCol).get();
lcv.isNull[rowIndex] = false;
} else {
lcv.vector[rowIndex] = 1;
setNullColIsNullValue(lcv, rowIndex);
}
}
break;
case LONG: {
LongColumnVector lcv = (LongColumnVector) batch.cols[i];
if (writableCol != null) {
lcv.vector[rowIndex] = ((LongWritable) writableCol).get();
lcv.isNull[rowIndex] = false;
} else {
lcv.vector[rowIndex] = 1;
setNullColIsNullValue(lcv, rowIndex);
}
}
break;
case DATE: {
LongColumnVector lcv = (LongColumnVector) batch.cols[i];
if (writableCol != null) {
lcv.vector[rowIndex] = ((DateWritable) writableCol).getDays();
lcv.isNull[rowIndex] = false;
} else {
lcv.vector[rowIndex] = 1;
setNullColIsNullValue(lcv, rowIndex);
}
}
break;
case FLOAT: {
DoubleColumnVector dcv = (DoubleColumnVector) batch.cols[i];
if (writableCol != null) {
dcv.vector[rowIndex] = ((FloatWritable) writableCol).get();
dcv.isNull[rowIndex] = false;
} else {
dcv.vector[rowIndex] = Double.NaN;
setNullColIsNullValue(dcv, rowIndex);
}
}
break;
case DOUBLE: {
DoubleColumnVector dcv = (DoubleColumnVector) batch.cols[i];
if (writableCol != null) {
dcv.vector[rowIndex] = ((DoubleWritable) writableCol).get();
dcv.isNull[rowIndex] = false;
} else {
dcv.vector[rowIndex] = Double.NaN;
setNullColIsNullValue(dcv, rowIndex);
}
}
break;
case TIMESTAMP: {
LongColumnVector lcv = (LongColumnVector) batch.cols[i];
if (writableCol != null) {
Timestamp t = ((TimestampWritable) writableCol).getTimestamp();
lcv.vector[rowIndex] = TimestampUtils.getTimeNanoSec(t);
lcv.isNull[rowIndex] = false;
} else {
lcv.vector[rowIndex] = 1;
setNullColIsNullValue(lcv, rowIndex);
}
}
break;
case STRING: {
BytesColumnVector bcv = (BytesColumnVector) batch.cols[i];
if (writableCol != null) {
bcv.isNull[rowIndex] = false;
Text colText = (Text) writableCol;
int start = buffer.getLength();
int length = colText.getLength();
try {
buffer.write(colText.getBytes(), 0, length);
} catch (IOException ioe) {
throw new IllegalStateException("bad write", ioe);
}
bcv.setRef(rowIndex, buffer.getData(), start, length);
} else {
setNullColIsNullValue(bcv, rowIndex);
}
}
break;
case DECIMAL:
DecimalColumnVector dcv = (DecimalColumnVector) batch.cols[i];
if (writableCol != null) {
dcv.isNull[rowIndex] = false;
HiveDecimalWritable wobj = (HiveDecimalWritable) writableCol;
dcv.vector[rowIndex].update(wobj.getHiveDecimal().unscaledValue(),
(short) wobj.getScale());
} else {
setNullColIsNullValue(dcv, rowIndex);
}
break;
default:
throw new HiveException("Vectorizaton is not supported for datatype:"
+ poi.getPrimitiveCategory());
}
}
}
}