/**
* 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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.Arrays;
import org.apache.hadoop.hive.common.type.Decimal128;
import org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.DecimalColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.DoubleColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.LongColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
import org.apache.hadoop.hive.ql.exec.vector.util.VectorizedRowGroupGenUtil;
import org.junit.Test;
/**
* Test vector expressions with constants.
*/
public class TestConstantVectorExpression {
@Test
public void testConstantExpression() {
ConstantVectorExpression longCve = new ConstantVectorExpression(0, 17);
ConstantVectorExpression doubleCve = new ConstantVectorExpression(1, 17.34);
String str = "alpha";
ConstantVectorExpression bytesCve = new ConstantVectorExpression(2, str.getBytes());
Decimal128 decVal = new Decimal128(25.8, (short) 1);
ConstantVectorExpression decimalCve = new ConstantVectorExpression(3, decVal);
int size = 20;
VectorizedRowBatch vrg = VectorizedRowGroupGenUtil.getVectorizedRowBatch(size, 4, 0);
LongColumnVector lcv = (LongColumnVector) vrg.cols[0];
DoubleColumnVector dcv = new DoubleColumnVector(size);
BytesColumnVector bcv = new BytesColumnVector(size);
DecimalColumnVector dv = new DecimalColumnVector(5, 1);
vrg.cols[1] = dcv;
vrg.cols[2] = bcv;
vrg.cols[3] = dv;
longCve.evaluate(vrg);
doubleCve.evaluate(vrg);
bytesCve.evaluate(vrg);
decimalCve.evaluate(vrg);
assertTrue(lcv.isRepeating);
assertTrue(dcv.isRepeating);
assertTrue(bcv.isRepeating);
assertEquals(17, lcv.vector[0]);
assertTrue(17.34 == dcv.vector[0]);
byte[] alphaBytes = "alpha".getBytes();
assertTrue(bcv.length[0] == alphaBytes.length);
assertTrue(sameFirstKBytes(alphaBytes, bcv.vector[0], alphaBytes.length));
// Evaluation of the bytes Constant Vector Expression after the vector is
// modified.
((BytesColumnVector) (vrg.cols[2])).vector[0] = "beta".getBytes();
bytesCve.evaluate(vrg);
assertTrue(bcv.length[0] == alphaBytes.length);
assertTrue(sameFirstKBytes(alphaBytes, bcv.vector[0], alphaBytes.length));
assertTrue(25.8 == dv.vector[0].doubleValue());
// Evaluation of the decimal Constant Vector Expression after the vector is
// modified.
((DecimalColumnVector) (vrg.cols[3])).vector[0] = new Decimal128(39.7, (short) 1);
decimalCve.evaluate(vrg);
assertTrue(25.8 == dv.vector[0].doubleValue());
}
private boolean sameFirstKBytes(byte[] o1, byte[] o2, int k) {
for (int i = 0; i != k; i++) {
if (o1[i] != o2[i]) {
return false;
}
}
return true;
}
}