/**
* 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;
import java.nio.charset.StandardCharsets;
import org.apache.hadoop.hive.ql.exec.vector.VectorExpressionDescriptor.Descriptor;
import org.apache.hadoop.hive.ql.exec.vector.expressions.AbstractFilterStringColLikeStringScalar.Checker;
import org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.LongColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.VectorExpressionDescriptor;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
public class SelectStringColLikeStringScalar extends VectorExpression {
private static final long serialVersionUID = 1L;
private int colNum;
private int outputColumn;
private byte[] pattern;
transient Checker checker = null;
public SelectStringColLikeStringScalar() {
super();
}
public SelectStringColLikeStringScalar(int colNum, byte[] pattern, int outputColumn) {
super();
this.colNum = colNum;
this.pattern = pattern;
this.outputColumn = outputColumn;
}
@Override
public void evaluate(VectorizedRowBatch batch) {
if (checker == null) {
checker = borrowChecker();
}
if (childExpressions != null) {
super.evaluateChildren(batch);
}
BytesColumnVector inputColVector = (BytesColumnVector) batch.cols[colNum];
int[] sel = batch.selected;
boolean[] nullPos = inputColVector.isNull;
int n = batch.size;
byte[][] vector = inputColVector.vector;
int[] length = inputColVector.length;
int[] start = inputColVector.start;
LongColumnVector outV = (LongColumnVector) batch.cols[outputColumn];
long[] outputVector = outV.vector;
// return immediately if batch is empty
if (n == 0) {
return;
}
outV.noNulls = inputColVector.noNulls;
outV.isRepeating = inputColVector.isRepeating;
if (inputColVector.noNulls) {
if (inputColVector.isRepeating) {
outputVector[0] = (checker.check(vector[0], start[0], length[0]) ? 1 : 0);
outV.isNull[0] = false;
} else if (batch.selectedInUse) {
for (int j = 0; j != n; j++) {
int i = sel[j];
outputVector[i] = (checker.check(vector[i], start[i], length[i]) ? 1 : 0);
outV.isNull[i] = false;
}
} else {
for (int i = 0; i != n; i++) {
outputVector[i] = (checker.check(vector[i], start[i], length[i]) ? 1 : 0);
outV.isNull[i] = false;
}
}
} else {
if (inputColVector.isRepeating) {
//All must be selected otherwise size would be zero. Repeating property will not change.
if (!nullPos[0]) {
outputVector[0] = (checker.check(vector[0], start[0], length[0]) ? 1 : 0);
outV.isNull[0] = false;
} else {
outputVector[0] = LongColumnVector.NULL_VALUE;
outV.isNull[0] = true;
}
} else if (batch.selectedInUse) {
for (int j = 0; j != n; j++) {
int i = sel[j];
if (!nullPos[i]) {
outputVector[i] = (checker.check(vector[i], start[i], length[i]) ? 1 : 0);
outV.isNull[i] = false;
} else {
outputVector[0] = LongColumnVector.NULL_VALUE;
outV.isNull[i] = true;
}
}
} else {
for (int i = 0; i != n; i++) {
if (!nullPos[i]) {
outputVector[i] = (checker.check(vector[i], start[i], length[i]) ? 1 : 0);
outV.isNull[i] = false;
} else {
outputVector[0] = LongColumnVector.NULL_VALUE;
outV.isNull[i] = true;
}
}
}
}
}
private Checker borrowChecker() {
FilterStringColLikeStringScalar fil = new FilterStringColLikeStringScalar();
return fil.createChecker(new String(pattern, StandardCharsets.UTF_8));
}
public int getColNum() {
return colNum;
}
public void setColNum(int colNum) {
this.colNum = colNum;
}
public byte[] getPattern() {
return pattern;
}
public void setPattern(byte[] pattern) {
this.pattern = pattern;
}
public void setOutputColumn(int outputColumn) {
this.outputColumn = outputColumn;
}
@Override
public int getOutputColumn() {
return outputColumn;
}
@Override
public String getOutputType() {
return "String_Family";
}
public String vectorExpressionParameters() {
return "col " + colNum;
}
@Override
public Descriptor getDescriptor() {
return (new VectorExpressionDescriptor.Builder())
.setMode(
VectorExpressionDescriptor.Mode.PROJECTION)
.setNumArguments(2)
.setArgumentTypes(
VectorExpressionDescriptor.ArgumentType.STRING_FAMILY,
VectorExpressionDescriptor.ArgumentType.STRING)
.setInputExpressionTypes(
VectorExpressionDescriptor.InputExpressionType.COLUMN,
VectorExpressionDescriptor.InputExpressionType.SCALAR).build();
}
}