package org.apache.lucene.index;
/**
* 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.
*/
import java.util.Arrays;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.FieldSelector;
import org.apache.lucene.document.FieldSelectorResult;
import org.apache.lucene.document.Fieldable;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
import org.junit.AfterClass;
import org.junit.BeforeClass;
/**
* Test demonstrating EOF bug on the last field of the last doc
* if other docs have already been accessed.
*/
public class TestLazyBug extends LuceneTestCase {
public static int NUM_DOCS = TEST_NIGHTLY ? 500 : 50;
public static int NUM_FIELDS = TEST_NIGHTLY ? 100 : 10;
private static String[] data = new String[] {
"now",
"is the time",
"for all good men",
"to come to the aid",
"of their country!",
"this string contains big chars:{\u0111 \u0222 \u0333 \u1111 \u2222 \u3333}",
"this string is a bigger string, mary had a little lamb, little lamb, little lamb!"
};
private static Set<String> dataset = new HashSet<String>(Arrays.asList(data));
private static String MAGIC_FIELD = "f"+(NUM_FIELDS/3);
private static Directory directory;
@BeforeClass
public static void beforeClass() throws Exception {
directory = makeIndex();
}
@AfterClass
public static void afterClass() throws Exception {
directory.close();
directory = null;
}
private static FieldSelector SELECTOR = new FieldSelector() {
public FieldSelectorResult accept(String f) {
if (f.equals(MAGIC_FIELD)) {
return FieldSelectorResult.LOAD;
}
return FieldSelectorResult.LAZY_LOAD;
}
};
private static Directory makeIndex() throws Exception {
Directory dir = newDirectory();
try {
IndexWriter writer = new IndexWriter(dir, newIndexWriterConfig(
TEST_VERSION_CURRENT, new MockAnalyzer(random)).setMergePolicy(newLogMergePolicy()));
LogMergePolicy lmp = (LogMergePolicy) writer.getConfig().getMergePolicy();
lmp.setUseCompoundFile(false);
for (int d = 1; d <= NUM_DOCS; d++) {
Document doc = new Document();
for (int f = 1; f <= NUM_FIELDS; f++ ) {
doc.add(newField("f"+f,
data[f % data.length]
+ '#' + data[random.nextInt(data.length)],
Field.Store.NO,
Field.Index.ANALYZED));
}
writer.addDocument(doc);
}
writer.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
return dir;
}
public void doTest(int[] docs) throws Exception {
IndexReader reader = IndexReader.open(directory, true);
for (int i = 0; i < docs.length; i++) {
Document d = reader.document(docs[i], SELECTOR);
d.get(MAGIC_FIELD);
List<Fieldable> fields = d.getFields();
for (Iterator<Fieldable> fi = fields.iterator(); fi.hasNext(); ) {
Fieldable f=null;
try {
f = fi.next();
String fname = f.name();
String fval = f.stringValue();
assertNotNull(docs[i]+" FIELD: "+fname, fval);
String[] vals = fval.split("#");
if (!dataset.contains(vals[0]) || !dataset.contains(vals[1])) {
fail("FIELD:"+fname+",VAL:"+fval);
}
} catch (Exception e) {
throw new Exception(docs[i]+" WTF: "+f.name(), e);
}
}
}
reader.close();
}
public void testLazyWorks() throws Exception {
doTest(new int[] { NUM_DOCS-1 });
}
public void testLazyAlsoWorks() throws Exception {
doTest(new int[] { NUM_DOCS-1, NUM_DOCS/2 });
}
public void testLazyBroken() throws Exception {
doTest(new int[] { NUM_DOCS/2, NUM_DOCS-1 });
}
}