/**
* 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 static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertThat;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFExtractUnion.ValueConverter;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.objectinspector.StandardUnionObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.StandardUnionObjectInspector.StandardUnion;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.junit.Test;
public class TestGenericUDFExtractUnionValueConverter {
private final StandardUnionObjectInspector unionObjectInspector = ObjectInspectorFactory
.getStandardUnionObjectInspector(
Arrays.<ObjectInspector> asList(
PrimitiveObjectInspectorFactory.javaStringObjectInspector,
PrimitiveObjectInspectorFactory.javaIntObjectInspector));
private final Object union = new StandardUnion((byte) 0, "foo");
private final ValueConverter underTest = new ValueConverter();
@Test
public void convertValue() {
ObjectInspector inspector = PrimitiveObjectInspectorFactory.javaStringObjectInspector;
Object value = "foo";
Object result = underTest.convert(value, inspector);
assertThat(result, is((Object) "foo"));
}
@Test
public void convertList() {
ObjectInspector inspector = ObjectInspectorFactory.getStandardListObjectInspector(unionObjectInspector);
Object value = Arrays.asList(union);
@SuppressWarnings("unchecked")
List<Object> result = (List<Object>) underTest.convert(value, inspector);
assertThat(result.size(), is(1));
assertThat(result.get(0), is((Object) Arrays.asList("foo", null)));
}
@Test
public void convertMap() {
ObjectInspector inspector = ObjectInspectorFactory
.getStandardMapObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector, unionObjectInspector);
Object value = Collections.singletonMap("bar", union);
@SuppressWarnings("unchecked")
Map<String, Object> result = (Map<String, Object>) underTest.convert(value, inspector);
assertThat(result.size(), is(1));
assertThat(result.get("bar"), is((Object) Arrays.asList("foo", null)));
}
@Test
public void convertStruct() {
ObjectInspector inspector = ObjectInspectorFactory
.getStandardStructObjectInspector(Arrays.asList("foo"), Arrays.<ObjectInspector> asList(unionObjectInspector));
Object value = Arrays.asList(union);
@SuppressWarnings("unchecked")
List<Object> result = (List<Object>) underTest.convert(value, inspector);
assertThat(result.size(), is(1));
assertThat(result.get(0), is((Object) Arrays.asList("foo", null)));
}
@Test
public void convertUnion() {
@SuppressWarnings("unchecked")
List<Object> result = (List<Object>) underTest.convert(union, unionObjectInspector);
assertThat(result.size(), is(2));
assertThat(result.get(0), is((Object) "foo"));
assertThat(result.get(1), is(nullValue()));
}
}