mirror of https://github.com/apache/lucene.git
LUCENE-8291: Remove QueryTemplateManager utility class from XML queryparser
This commit is contained in:
Uwe Schindler
parent
f959777995
commit
11c6a7ad88
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@ -230,6 +230,12 @@ Other
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* LUCENE-8122, LUCENE-8175: Upgrade analysis/icu to ICU 61.1.
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* LUCENE-8122, LUCENE-8175: Upgrade analysis/icu to ICU 61.1.
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(Robert Muir, Adrien Grand, Uwe Schindler)
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(Robert Muir, Adrien Grand, Uwe Schindler)
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* LUCENE-8291: Remove QueryTemplateManager utility class from XML queryparser.
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This class is just a general XML transforming tool (using property files and
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XSLT) and has nothing to do with query parsing. It can easily be implemented
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using more sophisticated libraries or using XSL transformers from the JDK.
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(Uwe Schindler)
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Build
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Build
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* LUCENE-7935: Publish .sha512 hash files with the release artifacts and stop
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* LUCENE-7935: Publish .sha512 hash files with the release artifacts and stop
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@ -1,202 +0,0 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.lucene.queryparser.xml;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.xml.sax.SAXException;
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import javax.xml.parsers.DocumentBuilder;
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import javax.xml.parsers.DocumentBuilderFactory;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.transform.*;
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import javax.xml.transform.dom.DOMResult;
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import javax.xml.transform.dom.DOMSource;
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import javax.xml.transform.stream.StreamResult;
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import java.io.StringWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.Properties;
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/**
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* Provides utilities for turning query form input (such as from a web page or Swing gui) into
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* Lucene XML queries by using XSL templates. This approach offers a convenient way of externalizing
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* and changing how user input is turned into Lucene queries.
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* Database applications often adopt similar practices by externalizing SQL in template files that can
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* be easily changed/optimized by a DBA.
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* The static methods can be used on their own or by creating an instance of this class you can store and
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* re-use compiled stylesheets for fast use (e.g. in a server environment)
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*/
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public class QueryTemplateManager {
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static final DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
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static final TransformerFactory tFactory = TransformerFactory.newInstance();
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HashMap<String, Templates> compiledTemplatesCache = new HashMap<>();
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Templates defaultCompiledTemplates = null;
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public QueryTemplateManager() {
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}
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public QueryTemplateManager(InputStream xslIs)
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throws TransformerConfigurationException, ParserConfigurationException, SAXException, IOException {
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addDefaultQueryTemplate(xslIs);
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}
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public void addDefaultQueryTemplate(InputStream xslIs)
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throws TransformerConfigurationException, ParserConfigurationException, SAXException, IOException {
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defaultCompiledTemplates = getTemplates(xslIs);
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}
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public void addQueryTemplate(String name, InputStream xslIs)
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throws TransformerConfigurationException, ParserConfigurationException, SAXException, IOException {
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compiledTemplatesCache.put(name, getTemplates(xslIs));
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}
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public String getQueryAsXmlString(Properties formProperties, String queryTemplateName)
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throws SAXException, IOException, ParserConfigurationException, TransformerException {
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Templates ts = compiledTemplatesCache.get(queryTemplateName);
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return getQueryAsXmlString(formProperties, ts);
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}
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public Document getQueryAsDOM(Properties formProperties, String queryTemplateName)
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throws SAXException, IOException, ParserConfigurationException, TransformerException {
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Templates ts = compiledTemplatesCache.get(queryTemplateName);
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return getQueryAsDOM(formProperties, ts);
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}
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public String getQueryAsXmlString(Properties formProperties)
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throws SAXException, IOException, ParserConfigurationException, TransformerException {
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return getQueryAsXmlString(formProperties, defaultCompiledTemplates);
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}
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public Document getQueryAsDOM(Properties formProperties)
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throws SAXException, IOException, ParserConfigurationException, TransformerException {
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return getQueryAsDOM(formProperties, defaultCompiledTemplates);
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}
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/**
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* Fast means of constructing query using a precompiled stylesheet
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*/
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public static String getQueryAsXmlString(Properties formProperties, Templates template)
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throws ParserConfigurationException, TransformerException {
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// TODO: Suppress XML header with encoding (as Strings have no encoding)
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StringWriter writer = new StringWriter();
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StreamResult result = new StreamResult(writer);
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transformCriteria(formProperties, template, result);
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return writer.toString();
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}
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/**
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* Slow means of constructing query parsing a stylesheet from an input stream
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*/
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public static String getQueryAsXmlString(Properties formProperties, InputStream xslIs)
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throws SAXException, IOException, ParserConfigurationException, TransformerException {
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// TODO: Suppress XML header with encoding (as Strings have no encoding)
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StringWriter writer = new StringWriter();
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StreamResult result = new StreamResult(writer);
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transformCriteria(formProperties, xslIs, result);
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return writer.toString();
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}
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/**
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* Fast means of constructing query using a cached,precompiled stylesheet
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*/
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public static Document getQueryAsDOM(Properties formProperties, Templates template)
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throws ParserConfigurationException, TransformerException {
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DOMResult result = new DOMResult();
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transformCriteria(formProperties, template, result);
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return (Document) result.getNode();
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}
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/**
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* Slow means of constructing query - parses stylesheet from input stream
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*/
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public static Document getQueryAsDOM(Properties formProperties, InputStream xslIs)
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throws SAXException, IOException, ParserConfigurationException, TransformerException {
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DOMResult result = new DOMResult();
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transformCriteria(formProperties, xslIs, result);
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return (Document) result.getNode();
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}
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/**
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* Slower transformation using an uncompiled stylesheet (suitable for development environment)
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*/
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public static void transformCriteria(Properties formProperties, InputStream xslIs, Result result)
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throws SAXException, IOException, ParserConfigurationException, TransformerException {
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dbf.setNamespaceAware(true);
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DocumentBuilder builder = dbf.newDocumentBuilder();
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org.w3c.dom.Document xslDoc = builder.parse(xslIs);
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DOMSource ds = new DOMSource(xslDoc);
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Transformer transformer = null;
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synchronized (tFactory) {
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transformer = tFactory.newTransformer(ds);
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}
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transformCriteria(formProperties, transformer, result);
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}
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/**
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* Fast transformation using a pre-compiled stylesheet (suitable for production environments)
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*/
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public static void transformCriteria(Properties formProperties, Templates template, Result result)
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throws ParserConfigurationException, TransformerException {
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transformCriteria(formProperties, template.newTransformer(), result);
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}
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public static void transformCriteria(Properties formProperties, Transformer transformer, Result result)
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throws ParserConfigurationException, TransformerException {
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dbf.setNamespaceAware(true);
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//Create an XML document representing the search index document.
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DocumentBuilder db = dbf.newDocumentBuilder();
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org.w3c.dom.Document doc = db.newDocument();
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Element root = doc.createElement("Document");
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doc.appendChild(root);
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Enumeration<?> keysEnum = formProperties.propertyNames();
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while (keysEnum.hasMoreElements()) {
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String propName = keysEnum.nextElement().toString();
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String value = formProperties.getProperty(propName);
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if ((value != null) && (value.length() > 0)) {
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DOMUtils.insertChild(root, propName, value);
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}
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}
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//Use XSLT to to transform into an XML query string using the queryTemplate
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DOMSource xml = new DOMSource(doc);
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transformer.transform(xml, result);
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}
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/**
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* Parses a query stylesheet for repeated use
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*/
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public static Templates getTemplates(InputStream xslIs)
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throws ParserConfigurationException, SAXException, IOException, TransformerConfigurationException {
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dbf.setNamespaceAware(true);
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DocumentBuilder builder = dbf.newDocumentBuilder();
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org.w3c.dom.Document xslDoc = builder.parse(xslIs);
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DOMSource ds = new DOMSource(xslDoc);
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return tFactory.newTemplates(ds);
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}
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}
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@ -1,163 +0,0 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.lucene.queryparser.xml;
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import org.apache.lucene.analysis.Analyzer;
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import org.apache.lucene.analysis.MockAnalyzer;
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import org.apache.lucene.document.Field;
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import org.apache.lucene.index.DirectoryReader;
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import org.apache.lucene.index.IndexReader;
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import org.apache.lucene.index.IndexWriter;
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import org.apache.lucene.search.IndexSearcher;
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import org.apache.lucene.search.Query;
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import org.apache.lucene.store.Directory;
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import org.apache.lucene.util.Constants;
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import org.apache.lucene.util.LuceneTestCase;
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import org.w3c.dom.Document;
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import org.xml.sax.SAXException;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.transform.TransformerException;
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import java.io.IOException;
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import java.util.Properties;
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import java.util.StringTokenizer;
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/**
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* This class illustrates how form input (such as from a web page or Swing gui) can be
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* turned into Lucene queries using a choice of XSL templates for different styles of queries.
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*/
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public class TestQueryTemplateManager extends LuceneTestCase {
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private CoreParser builder;
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private Analyzer analyzer;
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private IndexSearcher searcher;
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private IndexReader reader;
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private Directory dir;
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//A collection of documents' field values for use in our tests
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String docFieldValues[] =
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{
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"artist=Jeff Buckley \talbum=Grace \treleaseDate=1999 \tgenre=rock",
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"artist=Fugazi \talbum=Repeater \treleaseDate=1990 \tgenre=alternative",
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"artist=Fugazi \talbum=Red Medicine \treleaseDate=1995 \tgenre=alternative",
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"artist=Peeping Tom \talbum=Peeping Tom \treleaseDate=2006 \tgenre=rock",
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"artist=Red Snapper \talbum=Prince Blimey \treleaseDate=1996 \tgenre=electronic"
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};
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//A collection of example queries, consisting of name/value pairs representing form content plus
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// a choice of query style template to use in the test, with expected number of hits
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String queryForms[] =
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{
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"artist=Fugazi \texpectedMatches=2 \ttemplate=albumBooleanQuery",
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"artist=Fugazi \treleaseDate=1990 \texpectedMatches=1 \ttemplate=albumBooleanQuery",
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"artist=Buckley \tgenre=rock \texpectedMatches=1 \ttemplate=albumFilteredQuery",
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"artist=Buckley \tgenre=electronic \texpectedMatches=0 \ttemplate=albumFilteredQuery",
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"queryString=artist:buckly~ NOT genre:electronic \texpectedMatches=1 \ttemplate=albumLuceneClassicQuery"
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};
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public void testFormTransforms() throws SAXException, IOException, ParserConfigurationException, TransformerException, ParserException {
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assumeFalse("test temporarily disabled on J9, see https://issues.apache.org/jira/browse/LUCENE-6556",
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Constants.JAVA_VENDOR.startsWith("IBM"));
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//Cache all the query templates we will be referring to.
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QueryTemplateManager qtm = new QueryTemplateManager();
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qtm.addQueryTemplate("albumBooleanQuery", getClass().getResourceAsStream("albumBooleanQuery.xsl"));
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qtm.addQueryTemplate("albumFilteredQuery", getClass().getResourceAsStream("albumFilteredQuery.xsl"));
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qtm.addQueryTemplate("albumLuceneClassicQuery", getClass().getResourceAsStream("albumLuceneClassicQuery.xsl"));
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//Run all of our test queries
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for (String queryForm : queryForms) {
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Properties queryFormProperties = getPropsFromString(queryForm);
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//Get the required query XSL template for this test
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// Templates template=getTemplate(queryFormProperties.getProperty("template"));
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//Transform the queryFormProperties into a Lucene XML query
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Document doc = qtm.getQueryAsDOM(queryFormProperties, queryFormProperties.getProperty("template"));
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//Parse the XML query using the XML parser
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Query q = builder.getQuery(doc.getDocumentElement());
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//Run the query
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long h = searcher.search(q, 1000).totalHits;
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//Check we have the expected number of results
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int expectedHits = Integer.parseInt(queryFormProperties.getProperty("expectedMatches"));
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assertEquals("Number of results should match for query " + queryForm, expectedHits, h);
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}
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}
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//Helper method to construct Lucene query forms used in our test
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Properties getPropsFromString(String nameValuePairs) {
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Properties result = new Properties();
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StringTokenizer st = new StringTokenizer(nameValuePairs, "\t=");
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while (st.hasMoreTokens()) {
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String name = st.nextToken().trim();
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if (st.hasMoreTokens()) {
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String value = st.nextToken().trim();
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result.setProperty(name, value);
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}
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}
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return result;
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}
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//Helper method to construct Lucene documents used in our tests
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org.apache.lucene.document.Document getDocumentFromString(String nameValuePairs) {
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org.apache.lucene.document.Document result = new org.apache.lucene.document.Document();
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StringTokenizer st = new StringTokenizer(nameValuePairs, "\t=");
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while (st.hasMoreTokens()) {
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String name = st.nextToken().trim();
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if (st.hasMoreTokens()) {
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String value = st.nextToken().trim();
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result.add(newTextField(name, value, Field.Store.YES));
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}
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}
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return result;
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}
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/*
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* @see TestCase#setUp()
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*/
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@Override
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public void setUp() throws Exception {
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super.setUp();
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analyzer = new MockAnalyzer(random());
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//Create an index
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dir = newDirectory();
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IndexWriter w = new IndexWriter(dir, newIndexWriterConfig(analyzer));
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for (String docFieldValue : docFieldValues) {
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w.addDocument(getDocumentFromString(docFieldValue));
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}
|
|
||||||
w.forceMerge(1);
|
|
||||||
w.close();
|
|
||||||
reader = DirectoryReader.open(dir);
|
|
||||||
searcher = newSearcher(reader);
|
|
||||||
|
|
||||||
//initialize the parser
|
|
||||||
builder = new CorePlusExtensionsParser("artist", analyzer);
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public void tearDown() throws Exception {
|
|
||||||
reader.close();
|
|
||||||
dir.close();
|
|
||||||
super.tearDown();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -1,48 +0,0 @@
|
||||||
<?xml version="1.0" encoding="ISO-8859-1"?>
|
|
||||||
<!--
|
|
||||||
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.
|
|
||||||
-->
|
|
||||||
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
|
|
||||||
<xsl:template match="/Document">
|
|
||||||
<!--This template ANDs all fields together. Within a single field all terms are ORed.
|
|
||||||
The query fields are fed directly through an analyzer and so do not need to adhere to
|
|
||||||
traditional Lucene query syntax.
|
|
||||||
-->
|
|
||||||
<BooleanQuery>
|
|
||||||
<xsl:if test="count(artist)>0">
|
|
||||||
<Clause occurs="must">
|
|
||||||
<TermsQuery fieldName="artist"><xsl:value-of select="artist"/></TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</xsl:if>
|
|
||||||
<xsl:if test="count(album)>0">
|
|
||||||
<Clause occurs="must">
|
|
||||||
<TermsQuery fieldName="album"><xsl:value-of select="album"/></TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</xsl:if>
|
|
||||||
<xsl:if test="count(genre)>0">
|
|
||||||
<Clause occurs="must">
|
|
||||||
<TermsQuery fieldName="genre"><xsl:value-of select="genre"/></TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</xsl:if>
|
|
||||||
<xsl:if test="count(releaseDate)>0">
|
|
||||||
<Clause occurs="must">
|
|
||||||
<TermsQuery fieldName="releaseDate"><xsl:value-of select="releaseDate"/></TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</xsl:if>
|
|
||||||
</BooleanQuery>
|
|
||||||
|
|
||||||
</xsl:template>
|
|
||||||
</xsl:stylesheet>
|
|
||||||
|
|
@ -1,47 +0,0 @@
|
||||||
<?xml version="1.0" encoding="ISO-8859-1"?>
|
|
||||||
<!--
|
|
||||||
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.
|
|
||||||
-->
|
|
||||||
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
|
|
||||||
<xsl:template match="/Document">
|
|
||||||
<!-- This template uses an efficient, cached filter for the "genre" field".
|
|
||||||
Other query fields are fed directly through an analyzer and so do not need to adhere to
|
|
||||||
traditional Lucene query syntax. Terms within a field are ORed while different fields are ANDed
|
|
||||||
-->
|
|
||||||
<BooleanQuery>
|
|
||||||
<xsl:if test="count(artist)>0">
|
|
||||||
<Clause occurs="must">
|
|
||||||
<TermsQuery fieldName="artist"><xsl:value-of select="artist"/></TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</xsl:if>
|
|
||||||
<xsl:if test="count(album)>0">
|
|
||||||
<Clause occurs="must">
|
|
||||||
<TermsQuery fieldName="album"><xsl:value-of select="album"/></TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</xsl:if>
|
|
||||||
<xsl:if test="count(releaseDate)>0">
|
|
||||||
<Clause occurs="must">
|
|
||||||
<TermsQuery fieldName="releaseDate"><xsl:value-of select="releaseDate"/></TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</xsl:if>
|
|
||||||
<Clause occurs="filter">
|
|
||||||
<TermsQuery fieldName="genre">
|
|
||||||
<xsl:value-of select="genre"/>
|
|
||||||
</TermsQuery>
|
|
||||||
</Clause>
|
|
||||||
</BooleanQuery>
|
|
||||||
</xsl:template>
|
|
||||||
</xsl:stylesheet>
|
|
||||||
|
|
@ -1,29 +0,0 @@
|
||||||
<?xml version="1.0" encoding="ISO-8859-1"?>
|
|
||||||
<!--
|
|
||||||
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.
|
|
||||||
-->
|
|
||||||
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
|
|
||||||
<xsl:template match="/Document">
|
|
||||||
<!-- This template is designed to work with a google-like search form - one edit box and
|
|
||||||
uses the traditional Lucene query syntax
|
|
||||||
-->
|
|
||||||
<BooleanQuery>
|
|
||||||
<Clause occurs="must">
|
|
||||||
<UserQuery><xsl:value-of select="queryString"/></UserQuery>
|
|
||||||
</Clause>
|
|
||||||
</BooleanQuery>
|
|
||||||
</xsl:template>
|
|
||||||
</xsl:stylesheet>
|
|
||||||
Loading…
Reference in New Issue