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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.udf.generic;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredJavaObject;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDF.DeferredObject;
import org.apache.hadoop.hive.serde2.io.ByteWritable;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.serde2.io.HiveVarcharWritable;
import org.apache.hadoop.hive.serde2.io.ShortWritable;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
import org.apache.hadoop.io.FloatWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.junit.Assert;
import org.junit.Test;
public class TestGenericUDFPower {
@Test
public void testBytePowerShort() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
ByteWritable left = new ByteWritable((byte) 2);
ShortWritable right = new ShortWritable((short) 4);
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.writableByteObjectInspector,
PrimitiveObjectInspectorFactory.writableShortObjectInspector
};
DeferredObject[] args = {
new DeferredJavaObject(left),
new DeferredJavaObject(right),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(TypeInfoFactory.doubleTypeInfo, oi.getTypeInfo());
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals(new Double(16), new Double(res.get()));
}
@Test
public void testVarcharPowerInt() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
HiveVarcharWritable left = new HiveVarcharWritable();
left.set("3.14");
IntWritable right = new IntWritable(2);
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.writableHiveVarcharObjectInspector,
PrimitiveObjectInspectorFactory.writableIntObjectInspector
};
DeferredObject[] args = {
new DeferredJavaObject(left),
new DeferredJavaObject(right),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(oi.getTypeInfo(), TypeInfoFactory.doubleTypeInfo);
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals(new Double(3.14 * 3.14), new Double(res.get()));
}
@Test
public void testDoublePowerLong() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
DoubleWritable left = new DoubleWritable(4.5);
LongWritable right = new LongWritable(4);
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector,
PrimitiveObjectInspectorFactory.writableLongObjectInspector
};
DeferredObject[] args = {
new DeferredJavaObject(left),
new DeferredJavaObject(right),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(TypeInfoFactory.doubleTypeInfo, oi.getTypeInfo());
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals(new Double(4.5 * 4.5 * 4.5 * 4.5), new Double(res.get()));
}
@Test
public void testLongPowerDecimal() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
LongWritable left = new LongWritable(10);
HiveDecimalWritable right = new HiveDecimalWritable(HiveDecimal.create("3.14"));
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.writableLongObjectInspector,
PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(TypeInfoFactory.getDecimalTypeInfo(9, 4))
};
DeferredObject[] args = {
new DeferredJavaObject(left),
new DeferredJavaObject(right),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(TypeInfoFactory.doubleTypeInfo, oi.getTypeInfo());
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals(new Double(1380.3842646028852), new Double(res.get()));
}
@Test
public void testFloatPowerFloat() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
FloatWritable f1 = new FloatWritable(4.5f);
FloatWritable f2 = new FloatWritable(-1.5f);
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.writableFloatObjectInspector,
PrimitiveObjectInspectorFactory.writableFloatObjectInspector
};
DeferredObject[] args = {
new DeferredJavaObject(f1),
new DeferredJavaObject(f2),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(oi.getTypeInfo(), TypeInfoFactory.doubleTypeInfo);
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals(new Double(0.10475656017578482), new Double(res.get()));
}
@Test
public void testShortPowerFloat() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
ShortWritable base = new ShortWritable((short) 23);
FloatWritable power = new FloatWritable(-1.5f);
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.writableShortObjectInspector,
PrimitiveObjectInspectorFactory.writableFloatObjectInspector
};
DeferredObject[] args = {
new DeferredJavaObject(base),
new DeferredJavaObject(power),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(oi.getTypeInfo(), TypeInfoFactory.doubleTypeInfo);
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals(new Double(0.009065844089438033), new Double(res.get()));
}
@Test
public void testDoulePowerDecimal() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
DoubleWritable left = new DoubleWritable(-4.52);
HiveDecimalWritable right = new HiveDecimalWritable(HiveDecimal.create("3"));
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector,
PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(TypeInfoFactory.getDecimalTypeInfo(5, 2))
};
DeferredObject[] args = {
new DeferredJavaObject(left),
new DeferredJavaObject(right),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(TypeInfoFactory.doubleTypeInfo, oi.getTypeInfo());
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals("Unexpected result", new Double(-4.52 * 4.52 * 4.52), new Double(res.get()), 1e-6);
}
@Test
public void testDecimalPowerDecimal() throws HiveException {
GenericUDFPower udf = new GenericUDFPower();
HiveDecimalWritable left = new HiveDecimalWritable(HiveDecimal.create("14.5"));
HiveDecimalWritable right = new HiveDecimalWritable(HiveDecimal.create("-3.2"));
ObjectInspector[] inputOIs = {
PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(TypeInfoFactory.getDecimalTypeInfo(3, 1)),
PrimitiveObjectInspectorFactory.getPrimitiveWritableObjectInspector(TypeInfoFactory.getDecimalTypeInfo(5, 2))
};
DeferredObject[] args = {
new DeferredJavaObject(left),
new DeferredJavaObject(right),
};
PrimitiveObjectInspector oi = (PrimitiveObjectInspector) udf.initialize(inputOIs);
Assert.assertEquals(TypeInfoFactory.doubleTypeInfo, oi.getTypeInfo());
DoubleWritable res = (DoubleWritable) udf.evaluate(args);
Assert.assertEquals(new Double(1.9214203800477838E-4), new Double(res.get()));
}
}