org.apache.hadoop.hive.ql.exec.vector.expressions.gen.FilterDecimalScalarLessDecimalColumn Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.hadoop.hive.ql.exec.vector.expressions.gen;
import org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression;
import org.apache.hadoop.hive.ql.exec.vector.DecimalColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.expressions.DecimalUtil;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
import org.apache.hadoop.hive.ql.exec.vector.VectorExpressionDescriptor;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.ql.metadata.HiveException;
/**
* This is a generated class to evaluate a < comparison on a vector of decimal
* values.
*/
public class FilterDecimalScalarLessDecimalColumn extends VectorExpression {
private static final long serialVersionUID = 1L;
private final HiveDecimal value;
private final int colNum;
public FilterDecimalScalarLessDecimalColumn(HiveDecimal value, int colNum) {
super();
this.value = value;
this.colNum = colNum;
}
public FilterDecimalScalarLessDecimalColumn() {
super();
// Dummy final assignments.
value = null;
colNum = -1;
}
@Override
public void evaluate(VectorizedRowBatch batch) throws HiveException {
// return immediately if batch is empty
final int n = batch.size;
if (n == 0) {
return;
}
if (childExpressions != null) {
super.evaluateChildren(batch);
}
DecimalColumnVector inputColVector = (DecimalColumnVector) batch.cols[colNum];
int[] sel = batch.selected;
boolean[] inputIsNull = inputColVector.isNull;
HiveDecimalWritable[] vector = inputColVector.vector;
if (inputColVector.noNulls) {
if (inputColVector.isRepeating) {
if (!(DecimalUtil.compare(value, vector[0]) < 0)) {
// Entire batch is filtered out.
batch.size = 0;
}
} else if (batch.selectedInUse) {
int newSize = 0;
for(int j = 0; j != n; j++) {
int i = sel[j];
if (DecimalUtil.compare(value, vector[i]) < 0) {
sel[newSize++] = i;
}
}
batch.size = newSize;
} else {
int newSize = 0;
for(int i = 0; i != n; i++) {
if (DecimalUtil.compare(value, vector[i]) < 0) {
sel[newSize++] = i;
}
}
if (newSize < n) {
batch.size = newSize;
batch.selectedInUse = true;
}
}
} else {
if (inputColVector.isRepeating) {
if (!inputIsNull[0]) {
if (!(DecimalUtil.compare(value, vector[0]) < 0)) {
// Entire batch is filtered out.
batch.size = 0;
}
} else {
batch.size = 0;
}
} else if (batch.selectedInUse) {
int newSize = 0;
for(int j = 0; j != n; j++) {
int i = sel[j];
if (!inputIsNull[i]) {
if (DecimalUtil.compare(value, vector[i]) < 0) {
sel[newSize++] = i;
}
}
}
// Change the selected vector
batch.size = newSize;
} else {
int newSize = 0;
for(int i = 0; i != n; i++) {
if (!inputIsNull[i]) {
if (DecimalUtil.compare(value, vector[i]) < 0) {
sel[newSize++] = i;
}
}
}
if (newSize < n) {
batch.size = newSize;
batch.selectedInUse = true;
}
}
}
}
@Override
public String vectorExpressionParameters() {
return "val " + value.toString() + ", " + getColumnParamString(1, colNum);
}
@Override
public VectorExpressionDescriptor.Descriptor getDescriptor() {
return (new VectorExpressionDescriptor.Builder())
.setMode(
VectorExpressionDescriptor.Mode.FILTER)
.setNumArguments(2)
.setArgumentTypes(
VectorExpressionDescriptor.ArgumentType.getType("decimal"),
VectorExpressionDescriptor.ArgumentType.getType("decimal"))
.setInputExpressionTypes(
VectorExpressionDescriptor.InputExpressionType.SCALAR,
VectorExpressionDescriptor.InputExpressionType.COLUMN).build();
}
}