package org.apache.lucene.analysis.miscellaneous;
/*
* 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.
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import java.io.IOException;
import java.io.StringReader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.analysis.core.WhitespaceAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.Term;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util._TestUtil;
public class TestLimitTokenCountAnalyzer extends BaseTokenStreamTestCase {
public void testLimitTokenCountAnalyzer() throws IOException {
for (boolean consumeAll : new boolean[] { true, false }) {
MockAnalyzer mock = new MockAnalyzer(random());
// if we are consuming all tokens, we can use the checks,
// otherwise we can't
mock.setEnableChecks(consumeAll);
Analyzer a = new LimitTokenCountAnalyzer(mock, 2, consumeAll);
// dont use assertAnalyzesTo here, as the end offset is not the end of the string (unless consumeAll is true, in which case its correct)!
assertTokenStreamContents(a.tokenStream("dummy", new StringReader("1 2 3 4 5")), new String[] { "1", "2" }, new int[] { 0, 3 }, new int[] { 1, 4 }, consumeAll ? 16 : null);
assertTokenStreamContents(a.tokenStream("dummy", new StringReader("1 2 3 4 5")), new String[] { "1", "2" }, new int[] { 0, 2 }, new int[] { 1, 3 }, consumeAll ? 9 : null);
// less than the limit, ensure we behave correctly
assertTokenStreamContents(a.tokenStream("dummy", new StringReader("1 ")), new String[] { "1" }, new int[] { 0 }, new int[] { 1 }, consumeAll ? 3 : null);
// equal to limit
assertTokenStreamContents(a.tokenStream("dummy", new StringReader("1 2 ")), new String[] { "1", "2" }, new int[] { 0, 3 }, new int[] { 1, 4 }, consumeAll ? 6 : null);
}
}
public void testLimitTokenCountIndexWriter() throws IOException {
for (boolean consumeAll : new boolean[] { true, false }) {
Directory dir = newDirectory();
int limit = _TestUtil.nextInt(random(), 50, 101000);
MockAnalyzer mock = new MockAnalyzer(random());
// if we are consuming all tokens, we can use the checks,
// otherwise we can't
mock.setEnableChecks(consumeAll);
Analyzer a = new LimitTokenCountAnalyzer(mock, limit, consumeAll);
IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig
(TEST_VERSION_CURRENT, a));
Document doc = new Document();
StringBuilder b = new StringBuilder();
for(int i=1;i<limit;i++)
b.append(" a");
b.append(" x");
b.append(" z");
doc.add(newTextField("field", b.toString(), Field.Store.NO));
writer.addDocument(doc);
writer.close();
IndexReader reader = DirectoryReader.open(dir);
Term t = new Term("field", "x");
assertEquals(1, reader.docFreq(t));
t = new Term("field", "z");
assertEquals(0, reader.docFreq(t));
reader.close();
dir.close();
}
}
}