/**
* 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.text;
import org.apache.hadoop.conf.Configuration;
import org.apache.lucene.index.SegmentInfoPerCommit;
import org.apache.lucene.index.SegmentReader;
import org.apache.lucene.store.IOContext;
import org.apache.mahout.common.HadoopUtil;
import org.apache.mahout.text.doc.SingleFieldDocument;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import java.util.List;
import static java.util.Arrays.asList;
public class LuceneSegmentInputSplitTest extends AbstractLuceneStorageTest {
private Configuration configuration;
@Before
public void before() throws IOException {
configuration = new Configuration();
}
@After
public void after() throws IOException {
HadoopUtil.delete(configuration, indexPath1);
}
@Test
public void testGetSegment() throws Exception {
SingleFieldDocument doc1 = new SingleFieldDocument("1", "This is simple document 1");
SingleFieldDocument doc2 = new SingleFieldDocument("2", "This is simple document 2");
SingleFieldDocument doc3 = new SingleFieldDocument("3", "This is simple document 3");
List<SingleFieldDocument> docs = asList(doc1, doc2, doc3);
for (SingleFieldDocument doc : docs) {
commitDocuments(getDirectory(getIndexPath1AsFile()), doc);
}
assertSegmentContainsOneDoc("_0");
assertSegmentContainsOneDoc("_1");
assertSegmentContainsOneDoc("_2");
}
@Test(expected = IllegalArgumentException.class)
public void testGetSegmentNonExistingSegment() throws Exception {
SingleFieldDocument doc1 = new SingleFieldDocument("1", "This is simple document 1");
SingleFieldDocument doc2 = new SingleFieldDocument("2", "This is simple document 2");
SingleFieldDocument doc3 = new SingleFieldDocument("3", "This is simple document 3");
List<SingleFieldDocument> docs = asList(doc1, doc2, doc3);
for (SingleFieldDocument doc : docs) {
commitDocuments(getDirectory(getIndexPath1AsFile()), doc);
}
LuceneSegmentInputSplit inputSplit = new LuceneSegmentInputSplit(indexPath1, "_3", 1000);
inputSplit.getSegment(configuration);
}
private void assertSegmentContainsOneDoc(String segmentName) throws IOException {
LuceneSegmentInputSplit inputSplit = new LuceneSegmentInputSplit(indexPath1, segmentName, 1000);
SegmentInfoPerCommit segment = inputSplit.getSegment(configuration);
SegmentReader segmentReader = new SegmentReader(segment, 1, IOContext.READ);//SegmentReader.get(true, segment, 1);
assertEquals(segmentName, segment.info.name);
assertEquals(1, segmentReader.numDocs());
}
}