package org.apache.lucene.search.spans;
/*
* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.automaton.CharacterRunAutomaton;
import org.apache.lucene.util.automaton.RegExp;
public class TestSpanFirstQuery extends LuceneTestCase {
public void testStartPositions() throws Exception {
Directory dir = newDirectory();
// mimic StopAnalyzer
CharacterRunAutomaton stopSet = new CharacterRunAutomaton(new RegExp("the|a|of").toAutomaton());
Analyzer analyzer = new MockAnalyzer(random(), MockTokenizer.SIMPLE, true, stopSet);
RandomIndexWriter writer = new RandomIndexWriter(random(), dir, analyzer);
Document doc = new Document();
doc.add(newTextField("field", "the quick brown fox", Field.Store.NO));
writer.addDocument(doc);
Document doc2 = new Document();
doc2.add(newTextField("field", "quick brown fox", Field.Store.NO));
writer.addDocument(doc2);
IndexReader reader = writer.getReader();
IndexSearcher searcher = newSearcher(reader);
// user queries on "starts-with quick"
SpanQuery sfq = new SpanFirstQuery(new SpanTermQuery(new Term("field", "quick")), 1);
assertEquals(1, searcher.search(sfq, 10).totalHits);
// user queries on "starts-with the quick"
SpanQuery include = new SpanFirstQuery(new SpanTermQuery(new Term("field", "quick")), 2);
sfq = new SpanNotQuery(include, sfq);
assertEquals(1, searcher.search(sfq, 10).totalHits);
writer.close();
reader.close();
dir.close();
}
}