org.apache.hadoop.hive.ql.exec.vector.expressions.gen.DecimalScalarSubtractDecimalColumn Maven / Gradle / Ivy
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/**
* 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.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.VectorizedRowBatch;
import org.apache.hadoop.hive.ql.exec.vector.expressions.NullUtil;
import org.apache.hadoop.hive.ql.exec.vector.expressions.DecimalUtil;
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;
/**
* Generated from template ScalarArithmeticColumnDecimal.txt, which covers binary arithmetic
* expressions between a scalar and a column.
*/
public class DecimalScalarSubtractDecimalColumn extends VectorExpression {
private static final long serialVersionUID = 1L;
private int colNum;
private HiveDecimal value;
private int outputColumn;
public DecimalScalarSubtractDecimalColumn(HiveDecimal value, int colNum, int outputColumn) {
this.colNum = colNum;
this.value = value;
this.outputColumn = outputColumn;
this.outputType = "decimal";
}
public DecimalScalarSubtractDecimalColumn() {
this.outputType = "decimal";
}
@Override
public void evaluate(VectorizedRowBatch batch) {
if (childExpressions != null) {
super.evaluateChildren(batch);
}
DecimalColumnVector inputColVector = (DecimalColumnVector) batch.cols[colNum];
DecimalColumnVector outputColVector = (DecimalColumnVector) batch.cols[outputColumn];
int[] sel = batch.selected;
boolean[] inputIsNull = inputColVector.isNull;
boolean[] outputIsNull = outputColVector.isNull;
outputColVector.noNulls = inputColVector.noNulls;
outputColVector.isRepeating = inputColVector.isRepeating;
int n = batch.size;
HiveDecimalWritable[] vector = inputColVector.vector;
// return immediately if batch is empty
if (n == 0) {
return;
}
if (inputColVector.noNulls) {
/* Initialize output vector NULL values to false. This is necessary
* since the decimal operation may produce a NULL result even for
* a non-null input vector value, and convert the output vector
* to have noNulls = false;
*/
NullUtil.initOutputNullsToFalse(outputColVector, inputColVector.isRepeating,
batch.selectedInUse, sel, n);
}
if (inputColVector.isRepeating) {
if (!inputColVector.noNulls) {
outputIsNull[0] = inputIsNull[0];
}
// The following may override a "false" null setting if an error or overflow occurs.
DecimalUtil.subtractChecked(0, value, vector[0], outputColVector);
} else if (inputColVector.noNulls) {
if (batch.selectedInUse) {
for(int j = 0; j != n; j++) {
int i = sel[j];
DecimalUtil.subtractChecked(i, value, vector[i], outputColVector);
}
} else {
for(int i = 0; i != n; i++) {
DecimalUtil.subtractChecked(i, value, vector[i], outputColVector);
}
}
} else /* there are nulls */ {
if (batch.selectedInUse) {
for(int j = 0; j != n; j++) {
int i = sel[j];
outputIsNull[i] = inputIsNull[i];
// The following may override a "false" null setting if an error or overflow occurs.
DecimalUtil.subtractChecked(i, value, vector[i], outputColVector);
}
} else {
System.arraycopy(inputIsNull, 0, outputIsNull, 0, n);
for(int i = 0; i != n; i++) {
// The following may override a "false" null setting if an error or overflow occurs.
DecimalUtil.subtractChecked(i, value, vector[i], outputColVector);
}
}
}
NullUtil.setNullDataEntriesDecimal(outputColVector, batch.selectedInUse, sel, n);
}
@Override
public int getOutputColumn() {
return outputColumn;
}
@Override
public VectorExpressionDescriptor.Descriptor getDescriptor() {
return (new VectorExpressionDescriptor.Builder())
.setMode(
VectorExpressionDescriptor.Mode.PROJECTION)
.setNumArguments(2)
.setArgumentTypes(
VectorExpressionDescriptor.ArgumentType.getType("decimal"),
VectorExpressionDescriptor.ArgumentType.getType("decimal"))
.setInputExpressionTypes(
VectorExpressionDescriptor.InputExpressionType.SCALAR,
VectorExpressionDescriptor.InputExpressionType.COLUMN).build();
}
}