/*
* 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.lucene.analysis.miscellaneous;
import java.io.Reader;
import java.io.StringReader;
import java.util.HashSet;
import java.util.Set;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.util.CharArraySet;
import org.apache.lucene.util.Version;
/** Test {@link KeepWordFilter} */
public class TestKeepWordFilter extends BaseTokenStreamTestCase {
public void testStopAndGo() throws Exception
{
Set<String> words = new HashSet<String>();
words.add( "aaa" );
words.add( "bbb" );
String input = "xxx yyy aaa zzz BBB ccc ddd EEE";
// Test Stopwords
TokenStream stream = new MockTokenizer(new StringReader(input), MockTokenizer.WHITESPACE, false);
stream = new KeepWordFilter(TEST_VERSION_CURRENT, stream, new CharArraySet(TEST_VERSION_CURRENT, words, true));
assertTokenStreamContents(stream, new String[] { "aaa", "BBB" }, new int[] { 3, 2 });
// Now force case
stream = new MockTokenizer(new StringReader(input), MockTokenizer.WHITESPACE, false);
stream = new KeepWordFilter(TEST_VERSION_CURRENT, stream, new CharArraySet(TEST_VERSION_CURRENT,words, false));
assertTokenStreamContents(stream, new String[] { "aaa" }, new int[] { 3 });
// Test Stopwords
stream = new MockTokenizer(new StringReader(input), MockTokenizer.WHITESPACE, false);
stream = new KeepWordFilter(Version.LUCENE_43, false, stream, new CharArraySet(TEST_VERSION_CURRENT, words, true));
assertTokenStreamContents(stream, new String[] { "aaa", "BBB" }, new int[] { 1, 1 });
// Now force case
stream = new MockTokenizer(new StringReader(input), MockTokenizer.WHITESPACE, false);
stream = new KeepWordFilter(Version.LUCENE_43, false, stream, new CharArraySet(TEST_VERSION_CURRENT,words, false));
assertTokenStreamContents(stream, new String[] { "aaa" }, new int[] { 1 });
}
/** blast some random strings through the analyzer */
public void testRandomStrings() throws Exception {
final Set<String> words = new HashSet<String>();
words.add( "a" );
words.add( "b" );
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
TokenStream stream = new KeepWordFilter(TEST_VERSION_CURRENT, tokenizer, new CharArraySet(TEST_VERSION_CURRENT, words, true));
return new TokenStreamComponents(tokenizer, stream);
}
};
checkRandomData(random(), a, 1000*RANDOM_MULTIPLIER);
}
}