/*
* 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 org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.CannedTokenStream;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.Token;
import java.io.IOException;
import java.io.StringReader;
public class TestPrefixAwareTokenFilter extends BaseTokenStreamTestCase {
public void test() throws IOException {
PrefixAwareTokenFilter ts;
ts = new PrefixAwareTokenFilter(
new CannedTokenStream(createToken("a", 0, 1)),
new CannedTokenStream(createToken("b", 0, 1)));
assertTokenStreamContents(ts,
new String[] { "a", "b" },
new int[] { 0, 1 },
new int[] { 1, 2 });
// prefix and suffix using 2x prefix
final MockTokenizer suffix = new MockTokenizer(MockTokenizer.WHITESPACE, false);
suffix.setReader(new StringReader("hello world"));
ts = new PrefixAwareTokenFilter(new CannedTokenStream(createToken("^", 0, 0)),
suffix);
ts = new PrefixAwareTokenFilter(ts, new CannedTokenStream(createToken("$", 0, 0)));
assertTokenStreamContents(ts,
new String[] { "^", "hello", "world", "$" },
new int[] { 0, 0, 6, 11 },
new int[] { 0, 5, 11, 11 });
}
private static Token createToken(String term, int start, int offset)
{
return new Token(term, start, offset);
}
}