/**
* 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.mahout.utils.regex;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.mahout.common.DummyRecordWriter;
import org.apache.mahout.common.MahoutTestCase;
import org.junit.Test;
import java.util.List;
public final class RegexMapperTest extends MahoutTestCase {
@Test
public void testRegex() throws Exception {
RegexMapper mapper = new RegexMapper();
Configuration conf = new Configuration();
conf.set(RegexMapper.REGEX, "(?<=(\\?|&)q=).*?(?=&|$)");
conf.set(RegexMapper.TRANSFORMER_CLASS, URLDecodeTransformer.class.getName());
DummyRecordWriter<LongWritable, Text> mapWriter = new DummyRecordWriter<LongWritable, Text>();
Mapper<LongWritable, Text, LongWritable, Text>.Context mapContext = DummyRecordWriter
.build(mapper, conf, mapWriter);
mapper.setup(mapContext);
for (int i = 0; i < RegexUtilsTest.TEST_STRS.length; i++) {
String testStr = RegexUtilsTest.TEST_STRS[i];
LongWritable key = new LongWritable(i);
mapper.map(key, new Text(testStr), mapContext);
List<Text> value = mapWriter.getValue(key);
if (!RegexUtilsTest.GOLD[i].isEmpty()) {
assertEquals(1, value.size());
assertEquals(RegexUtilsTest.GOLD[i], value.get(0).toString());
}
}
}
@Test
public void testGroups() throws Exception {
RegexMapper mapper = new RegexMapper();
Configuration conf = new Configuration();
conf.set(RegexMapper.REGEX, "(\\d+)\\.(\\d+)\\.(\\d+)");
conf.set(RegexMapper.TRANSFORMER_CLASS, URLDecodeTransformer.class.getName());
conf.setStrings(RegexMapper.GROUP_MATCHERS, "1", "3");
DummyRecordWriter<LongWritable, Text> mapWriter = new DummyRecordWriter<LongWritable, Text>();
Mapper<LongWritable, Text, LongWritable, Text>.Context mapContext = DummyRecordWriter
.build(mapper, conf, mapWriter);
mapper.setup(mapContext);
for (int i = 0; i < RegexUtilsTest.TEST_STRS.length; i++) {
String testStr = RegexUtilsTest.TEST_STRS[i];
LongWritable key = new LongWritable(i);
mapper.map(key, new Text(testStr), mapContext);
List<Text> value = mapWriter.getValue(key);
assertEquals(1, value.size());
assertEquals("127 0", value.get(0).toString());
}
}
@Test
public void testFPGFormatter() throws Exception {
RegexMapper mapper = new RegexMapper();
Configuration conf = new Configuration();
conf.set(RegexMapper.REGEX, "(?<=(\\?|&)q=).*?(?=&|$)");
conf.set(RegexMapper.TRANSFORMER_CLASS, URLDecodeTransformer.class.getName());
conf.set(RegexMapper.FORMATTER_CLASS, FPGFormatter.class.getName());
DummyRecordWriter<LongWritable, Text> mapWriter = new DummyRecordWriter<LongWritable, Text>();
Mapper<LongWritable, Text, LongWritable, Text>.Context mapContext = DummyRecordWriter
.build(mapper, conf, mapWriter);
mapper.setup(mapContext);
RegexFormatter formatter = new FPGFormatter();
for (int i = 0; i < RegexUtilsTest.TEST_STRS.length; i++) {
String testStr = RegexUtilsTest.TEST_STRS[i];
LongWritable key = new LongWritable(i);
mapper.map(key, new Text(testStr), mapContext);
List<Text> value = mapWriter.getValue(key);
if (!RegexUtilsTest.GOLD[i].isEmpty()) {
assertEquals(1, value.size());
assertEquals(formatter.format(RegexUtilsTest.GOLD[i]), value.get(0).toString());
}
}
}
}