| package org.apache.lucene.xmlparser; |
| |
| import java.io.IOException; |
| import java.util.Properties; |
| import java.util.StringTokenizer; |
| |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.standard.StandardAnalyzer; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.IndexWriter; |
| import org.apache.lucene.index.IndexWriterConfig; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.Query; |
| import org.apache.lucene.store.RAMDirectory; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.w3c.dom.Document; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * 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. |
| */ |
| /** |
| * This class illustrates how form input (such as from a web page or Swing gui) can be |
| * turned into Lucene queries using a choice of XSL templates for different styles of queries. |
| */ |
| public class TestQueryTemplateManager extends LuceneTestCase { |
| |
| CoreParser builder; |
| Analyzer analyzer=new StandardAnalyzer(TEST_VERSION_CURRENT); |
| private IndexSearcher searcher; |
| |
| //A collection of documents' field values for use in our tests |
| String docFieldValues []= |
| { |
| "artist=Jeff Buckley \talbum=Grace \treleaseDate=1999 \tgenre=rock", |
| "artist=Fugazi \talbum=Repeater \treleaseDate=1990 \tgenre=alternative", |
| "artist=Fugazi \talbum=Red Medicine \treleaseDate=1995 \tgenre=alternative", |
| "artist=Peeping Tom \talbum=Peeping Tom \treleaseDate=2006 \tgenre=rock", |
| "artist=Red Snapper \talbum=Prince Blimey \treleaseDate=1996 \tgenre=electronic" |
| }; |
| |
| //A collection of example queries, consisting of name/value pairs representing form content plus |
| // a choice of query style template to use in the test, with expected number of hits |
| String queryForms[]= |
| { |
| "artist=Fugazi \texpectedMatches=2 \ttemplate=albumBooleanQuery", |
| "artist=Fugazi \treleaseDate=1990 \texpectedMatches=1 \ttemplate=albumBooleanQuery", |
| "artist=Buckley \tgenre=rock \texpectedMatches=1 \ttemplate=albumFilteredQuery", |
| "artist=Buckley \tgenre=electronic \texpectedMatches=0 \ttemplate=albumFilteredQuery", |
| "queryString=artist:buckly~ NOT genre:electronic \texpectedMatches=1 \ttemplate=albumLuceneClassicQuery" |
| }; |
| |
| |
| public void testFormTransforms() throws SAXException, IOException, ParserConfigurationException, TransformerException, ParserException |
| { |
| //Cache all the query templates we will be referring to. |
| QueryTemplateManager qtm=new QueryTemplateManager(); |
| qtm.addQueryTemplate("albumBooleanQuery", getClass().getResourceAsStream("albumBooleanQuery.xsl")); |
| qtm.addQueryTemplate("albumFilteredQuery", getClass().getResourceAsStream("albumFilteredQuery.xsl")); |
| qtm.addQueryTemplate("albumLuceneClassicQuery", getClass().getResourceAsStream("albumLuceneClassicQuery.xsl")); |
| //Run all of our test queries |
| for (int i = 0; i < queryForms.length; i++) |
| { |
| Properties queryFormProperties=getPropsFromString(queryForms[i]); |
| |
| //Get the required query XSL template for this test |
| // Templates template=getTemplate(queryFormProperties.getProperty("template")); |
| |
| //Transform the queryFormProperties into a Lucene XML query |
| Document doc=qtm.getQueryAsDOM(queryFormProperties,queryFormProperties.getProperty("template")); |
| |
| //Parse the XML query using the XML parser |
| Query q=builder.getQuery(doc.getDocumentElement()); |
| |
| //Run the query |
| int h=searcher.search(q, null, 1000).totalHits; |
| |
| //Check we have the expected number of results |
| int expectedHits=Integer.parseInt(queryFormProperties.getProperty("expectedMatches")); |
| assertEquals("Number of results should match for query "+queryForms[i],expectedHits,h); |
| |
| } |
| } |
| |
| //Helper method to construct Lucene query forms used in our test |
| Properties getPropsFromString(String nameValuePairs) |
| { |
| Properties result=new Properties(); |
| StringTokenizer st=new StringTokenizer(nameValuePairs,"\t="); |
| while(st.hasMoreTokens()) |
| { |
| String name=st.nextToken().trim(); |
| if(st.hasMoreTokens()) |
| { |
| String value=st.nextToken().trim(); |
| result.setProperty(name,value); |
| } |
| } |
| return result; |
| } |
| |
| //Helper method to construct Lucene documents used in our tests |
| org.apache.lucene.document.Document getDocumentFromString(String nameValuePairs) |
| { |
| org.apache.lucene.document.Document result=new org.apache.lucene.document.Document(); |
| StringTokenizer st=new StringTokenizer(nameValuePairs,"\t="); |
| while(st.hasMoreTokens()) |
| { |
| String name=st.nextToken().trim(); |
| if(st.hasMoreTokens()) |
| { |
| String value=st.nextToken().trim(); |
| result.add(new Field(name,value,Field.Store.YES,Field.Index.ANALYZED)); |
| } |
| } |
| return result; |
| } |
| |
| /* |
| * @see TestCase#setUp() |
| */ |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| |
| |
| //Create an index |
| RAMDirectory dir=new RAMDirectory(); |
| IndexWriter w=new IndexWriter(dir, new IndexWriterConfig(TEST_VERSION_CURRENT, analyzer)); |
| for (int i = 0; i < docFieldValues.length; i++) |
| { |
| w.addDocument(getDocumentFromString(docFieldValues[i])); |
| } |
| w.optimize(); |
| w.close(); |
| searcher=new IndexSearcher(dir, true); |
| |
| //initialize the parser |
| builder=new CorePlusExtensionsParser("artist", analyzer); |
| |
| } |
| |
| |
| @Override |
| protected void tearDown() throws Exception { |
| searcher.close(); |
| super.tearDown(); |
| } |
| } |