/**
* 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.
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package org.apache.hadoop.hive.ql.udf.generic;
import junit.framework.TestCase;
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.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
public class TestGenericUDFSubstringIndex extends TestCase {
public void testSubstringIndex() throws HiveException {
GenericUDFSubstringIndex udf = new GenericUDFSubstringIndex();
ObjectInspector valueOI0 = PrimitiveObjectInspectorFactory.writableStringObjectInspector;
ObjectInspector valueOI1 = PrimitiveObjectInspectorFactory.writableStringObjectInspector;
ObjectInspector valueOI2 = PrimitiveObjectInspectorFactory.writableIntObjectInspector;
ObjectInspector[] arguments = { valueOI0, valueOI1, valueOI2 };
udf.initialize(arguments);
runAndVerify("www.apache.org", ".", 3, "www.apache.org", udf);
runAndVerify("www.apache.org", ".", 2, "www.apache", udf);
runAndVerify("www.apache.org", ".", 1, "www", udf);
runAndVerify("www.apache.org", ".", 0, "", udf);
runAndVerify("www.apache.org", ".", -1, "org", udf);
runAndVerify("www.apache.org", ".", -2, "apache.org", udf);
runAndVerify("www.apache.org", ".", -3, "www.apache.org", udf);
// str is empty string
runAndVerify("", ".", 1, "", udf);
// empty string delim
runAndVerify("www.apache.org", "", 1, "", udf);
// delim does not exist in str
runAndVerify("www.apache.org", "-", 2, "www.apache.org", udf);
// delim is 2 chars
runAndVerify("www||apache||org", "||", 2, "www||apache", udf);
// null
runAndVerify(null, ".", 2, null, udf);
runAndVerify("www.apache.org", null, 2, null, udf);
runAndVerify("www.apache.org", ".", null, null, udf);
}
public void testSubstringIndexConst() throws HiveException {
GenericUDFSubstringIndex udf = new GenericUDFSubstringIndex();
ObjectInspector valueOI0 = PrimitiveObjectInspectorFactory.writableStringObjectInspector;
Text delim = new Text(".");
ObjectInspector valueOI1 = PrimitiveObjectInspectorFactory
.getPrimitiveWritableConstantObjectInspector(TypeInfoFactory.stringTypeInfo, delim);
IntWritable count = new IntWritable(2);
ObjectInspector valueOI2 = PrimitiveObjectInspectorFactory
.getPrimitiveWritableConstantObjectInspector(TypeInfoFactory.intTypeInfo, count);
ObjectInspector[] arguments = { valueOI0, valueOI1, valueOI2 };
udf.initialize(arguments);
runAndVerifyConst("www.apache.org", "www.apache", udf);
}
private void runAndVerify(String str, String delim, Integer count, String expResult,
GenericUDF udf) throws HiveException {
DeferredObject valueObj0 = new DeferredJavaObject(str != null ? new Text(str) : null);
DeferredObject valueObj1 = new DeferredJavaObject(delim != null ? new Text(delim) : delim);
DeferredObject valueObj2 = new DeferredJavaObject(count != null ? new IntWritable(count) : null);
DeferredObject[] args = { valueObj0, valueObj1, valueObj2 };
Text output = (Text) udf.evaluate(args);
assertEquals("substring_index() test ", expResult, output != null ? output.toString() : null);
}
private void runAndVerifyConst(String str, String expResult, GenericUDF udf) throws HiveException {
DeferredObject valueObj0 = new DeferredJavaObject(str != null ? new Text(str) : null);
DeferredObject[] args = { valueObj0 };
Text output = (Text) udf.evaluate(args);
assertEquals("substring_index() test ", expResult, output != null ? output.toString() : null);
}
}