ehatcher 2004/05/24 09:20:46
Added: contributions/miscellaneous/src/test/org/apache/lucene/misc
ChainedFilterTest.java
Log:
rudimentary test case for ChainedFilter, used initially to learn how it works
Revision Changes Path
1.1
jakarta-lucene-sandbox/contributions/miscellaneous/src/test/org/apache/lucene/misc/ChainedFilterTest.java
Index: ChainedFilterTest.java
===================================================================
package org.apache.lucene.misc;
/**
* Copyright 2004 The Apache Software Foundation
*
* Licensed 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 junit.framework.TestCase;
import java.util.Calendar;
import java.util.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.DateFilter;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.QueryFilter;
public class ChainedFilterTest extends TestCase {
public static final int MAX = 500;
private RAMDirectory directory;
private IndexSearcher searcher;
private Query query;
private DateFilter dateFilter;
private QueryFilter bobFilter;
private QueryFilter sueFilter;
public void setUp() throws Exception {
directory = new RAMDirectory();
IndexWriter writer =
new IndexWriter(directory, new WhitespaceAnalyzer(), true);
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(1041397200000L); // 2003 January 01
for (int i = 0; i < MAX; i++) {
Document doc = new Document();
doc.add(Field.Keyword("key", "" + (i + 1)));
doc.add(
Field.Keyword("owner", (i < MAX / 2) ? "bob" : "sue"));
doc.add(Field.Keyword("date", cal.getTime()));
writer.addDocument(doc);
cal.add(Calendar.DATE, 1);
}
writer.close();
searcher = new IndexSearcher(directory);
// query for everything to make life easier
BooleanQuery bq = new BooleanQuery();
bq.add(new TermQuery(new Term("owner", "bob")), false, false);
bq.add(new TermQuery(new Term("owner", "sue")),false, false);
query = bq;
// date filter matches everything too
Date pastTheEnd = parseDate("2099 Jan 1");
dateFilter = DateFilter.Before("date", pastTheEnd);
bobFilter = new QueryFilter(
new TermQuery(new Term("owner", "bob")));
sueFilter = new QueryFilter(
new TermQuery(new Term("owner", "sue")));
}
public void testSingleFilter() throws Exception {
ChainedFilter chain = new ChainedFilter(
new Filter[] {dateFilter});
Hits hits = searcher.search(query, chain);
assertEquals(MAX, hits.length());
chain = new ChainedFilter(new Filter[] {bobFilter});
hits = searcher.search(query, chain);
assertEquals(MAX / 2, hits.length());
}
public void testOR() throws Exception {
ChainedFilter chain = new ChainedFilter(
new Filter[] {sueFilter, bobFilter});
Hits hits = searcher.search(query, chain);
assertEquals("OR matches all", MAX, hits.length());
}
public void testAND() throws Exception {
ChainedFilter chain = new ChainedFilter(
new Filter[] {dateFilter, bobFilter}, ChainedFilter.AND);
Hits hits = searcher.search(query, chain);
assertEquals("AND matches just bob", MAX / 2, hits.length());
assertEquals("bob", hits.doc(0).get("owner"));
}
public void testXOR() throws Exception {
ChainedFilter chain = new ChainedFilter(
new Filter[]{dateFilter, bobFilter}, ChainedFilter.XOR);
Hits hits = searcher.search(query, chain);
assertEquals("XOR matches sue", MAX / 2, hits.length());
assertEquals("sue", hits.doc(0).get("owner"));
}
public void testANDNOT() throws Exception {
ChainedFilter chain = new ChainedFilter(
new Filter[]{dateFilter, sueFilter},
new int[] {ChainedFilter.AND, ChainedFilter.ANDNOT});
Hits hits = searcher.search(query, chain);
assertEquals("ANDNOT matches just bob",
MAX / 2, hits.length());
assertEquals("bob", hits.doc(0).get("owner"));
}
private Date parseDate(String s) throws ParseException {
return new SimpleDateFormat("yyyy MMM dd").parse(s);
}
}
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