/*
* 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.
*/
using System;
using SimpleAnalyzer = Lucene.Net.Analysis.SimpleAnalyzer;
using Document = Lucene.Net.Documents.Document;
using Field = Lucene.Net.Documents.Field;
using IndexReader = Lucene.Net.Index.IndexReader;
using IndexWriter = Lucene.Net.Index.IndexWriter;
using Term = Lucene.Net.Index.Term;
using TermEnum = Lucene.Net.Index.TermEnum;
using RAMDirectory = Lucene.Net.Store.RAMDirectory;
using NUnit.Framework;
namespace Lucene.Net.Search
{
/// This class tests PhrasePrefixQuery class.
///
///
/// Otis Gospodnetic
///
/// $Id: TestPhrasePrefixQuery.java 150497 2004-09-07 18:26:36Z dnaber $
///
[TestFixture]
public class TestPhrasePrefixQuery
{
///
[Test]
public virtual void TestPhrasePrefix()
{
RAMDirectory indexStore = new RAMDirectory();
IndexWriter writer = new IndexWriter(indexStore, new SimpleAnalyzer(), true);
Lucene.Net.Documents.Document doc1 = new Lucene.Net.Documents.Document();
Lucene.Net.Documents.Document doc2 = new Lucene.Net.Documents.Document();
Lucene.Net.Documents.Document doc3 = new Lucene.Net.Documents.Document();
Lucene.Net.Documents.Document doc4 = new Lucene.Net.Documents.Document();
Lucene.Net.Documents.Document doc5 = new Lucene.Net.Documents.Document();
doc1.Add(new Field("body", "blueberry pie", Field.Store.YES, Field.Index.TOKENIZED));
doc2.Add(new Field("body", "blueberry strudel", Field.Store.YES, Field.Index.TOKENIZED));
doc3.Add(new Field("body", "blueberry pizza", Field.Store.YES, Field.Index.TOKENIZED));
doc4.Add(new Field("body", "blueberry chewing gum", Field.Store.YES, Field.Index.TOKENIZED));
doc5.Add(new Field("body", "piccadilly circus", Field.Store.YES, Field.Index.TOKENIZED));
writer.AddDocument(doc1);
writer.AddDocument(doc2);
writer.AddDocument(doc3);
writer.AddDocument(doc4);
writer.AddDocument(doc5);
writer.Optimize();
writer.Close();
IndexSearcher searcher = new IndexSearcher(indexStore);
PhrasePrefixQuery query1 = new PhrasePrefixQuery();
PhrasePrefixQuery query2 = new PhrasePrefixQuery();
query1.Add(new Term("body", "blueberry"));
query2.Add(new Term("body", "strawberry"));
System.Collections.ArrayList termsWithPrefix = new System.Collections.ArrayList();
IndexReader ir = IndexReader.Open(indexStore);
// this TermEnum gives "piccadilly", "pie" and "pizza".
System.String prefix = "pi";
TermEnum te = ir.Terms(new Term("body", prefix + "*"));
do
{
if (te.Term().Text().StartsWith(prefix))
{
termsWithPrefix.Add(te.Term());
}
}
while (te.Next());
query1.Add((Term[]) termsWithPrefix.ToArray(typeof(Term)));
query2.Add((Term[]) termsWithPrefix.ToArray(typeof(Term)));
Hits result;
result = searcher.Search(query1);
Assert.AreEqual(2, result.Length());
result = searcher.Search(query2);
Assert.AreEqual(0, result.Length());
}
}
}