org.apache.hadoop.hive.ql.exec.vector.expressions.gen.FuncNegateDecimalToDecimal 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.expressions.MathExpr;
import org.apache.hadoop.hive.ql.exec.vector.*;
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.ql.exec.vector.DecimalColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.LongColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.expressions.DecimalUtil;
import java.util.Arrays;
public class FuncNegateDecimalToDecimal extends VectorExpression {
private static final long serialVersionUID = 1L;
private int colNum;
private int outputColumn;
public FuncNegateDecimalToDecimal(int colNum, int outputColumn) {
this();
this.colNum = colNum;
this.outputColumn = outputColumn;
}
public FuncNegateDecimalToDecimal() {
super();
}
@Override
public void evaluate(VectorizedRowBatch batch) {
if (childExpressions != null) {
this.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;
int n = batch.size;
HiveDecimalWritable[] vector = inputColVector.vector;
// return immediately if batch is empty
if (n == 0) {
return;
}
if (inputColVector.isRepeating) {
// All must be selected otherwise size would be zero
// Repeating property will not change.
outputIsNull[0] = inputIsNull[0];
DecimalUtil.negate(0, vector[0], outputColVector);
outputColVector.isRepeating = true;
} else if (inputColVector.noNulls) {
if (batch.selectedInUse) {
for(int j = 0; j != n; j++) {
int i = sel[j];
// Set isNull because decimal operation can yield a null.
outputIsNull[i] = false;
DecimalUtil.negate(i, vector[i], outputColVector);
}
} else {
// Set isNull because decimal operation can yield a null.
Arrays.fill(outputIsNull, 0, n, false);
for(int i = 0; i != n; i++) {
DecimalUtil.negate(i, vector[i], outputColVector);
}
}
outputColVector.isRepeating = false;
} else /* there are nulls */ {
if (batch.selectedInUse) {
for(int j = 0; j != n; j++) {
int i = sel[j];
outputIsNull[i] = inputIsNull[i];
DecimalUtil.negate(i, vector[i], outputColVector);
}
} else {
System.arraycopy(inputIsNull, 0, outputIsNull, 0, n);
for(int i = 0; i != n; i++) {
DecimalUtil.negate(i, vector[i], outputColVector);
}
}
outputColVector.isRepeating = false;
}
}
@Override
public int getOutputColumn() {
return outputColumn;
}
@Override
public String getOutputType() {
return outputType;
}
@Override
public VectorExpressionDescriptor.Descriptor getDescriptor() {
return (new VectorExpressionDescriptor.Builder())
.setMode(
VectorExpressionDescriptor.Mode.PROJECTION)
.setNumArguments(1)
.setArgumentTypes(
VectorExpressionDescriptor.ArgumentType.DECIMAL)
.setInputExpressionTypes(
VectorExpressionDescriptor.InputExpressionType.COLUMN).build();
}
}