/**
* 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.
*/
package org.apache.lucene.gdata.server.registry;
import java.io.IOException;
import org.apache.commons.digester.Digester;
import org.apache.lucene.gdata.search.config.IndexSchema;
import org.apache.lucene.gdata.search.config.IndexSchemaField;
import org.apache.lucene.gdata.server.registry.configuration.ComponentConfiguration;
import org.apache.lucene.gdata.utils.SimpleSaxErrorHandler;
import org.apache.xerces.parsers.SAXParser;
import org.xml.sax.SAXException;
/**
* Reads the configuration file and creates the
* {@link org.apache.lucene.gdata.server.registry.GDataServerRegistry} singleton
* instance. All services and components will be instantiated and registered in
* the registry.
*
* @author Simon Willnauer
*
*/
class RegistryBuilder {
/**
* builds the {@link GDataServerRegistry} accessible via the
* {@link GDataServerRegistry#getRegistry()} method
*
* @throws IOException -
* if an IOException occurs while reading the config file
* @throws SAXException -
* if the config file can not be parsed
*/
static void buildRegistry() throws IOException, SAXException {
String schemaFile = RegistryBuilder.class.getResource("/gdata-config.xsd").getFile();
/*
* Force using apache xerces parser for digester
*/
SAXParser parser = new SAXParser();
parser.setFeature("http://apache.org/xml/features/validation/schema-full-checking",true);
parser.setFeature("http://apache.org/xml/features/validation/schema",true);
parser.setFeature("http://xml.org/sax/features/validation",true);
parser.setProperty("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",schemaFile);
Digester digester = new Digester(parser);
buildFromConfiguration(digester, GDataServerRegistry
.getRegistry(),schemaFile);
}
private static void buildFromConfiguration(Digester digester,
GDataServerRegistry registry, String schemaURL) throws IOException, SAXException {
digester.setValidating(true);
digester.setSchema(schemaURL);
digester.setErrorHandler(new SimpleSaxErrorHandler());
digester.push(registry);
/*
* register services
*/
digester.addObjectCreate("gdata/service", ProvidedServiceConfig.class);
digester.addSetProperties("gdata/service");
digester.addSetNext("gdata/service", "registerService");
digester.addBeanPropertySetter("gdata/service/feed-class", "feedType");
digester.addBeanPropertySetter("gdata/service/entry-class", "entryType");
digester.addBeanPropertySetter("gdata/service/extension-profile",
"extensionProfileClass");
digester.addBeanPropertySetter("gdata/service/previewStyleSheet","xsltStylesheet");
addIndexRule(digester);
/*
* load components and configurations
*/
digester.addCallMethod("gdata/server-components/component",
"registerComponent", 2, new Class[] { Class.class , ComponentConfiguration.class});
digester.addCallParam("gdata/server-components/component/class",0);
digester.addObjectCreate("gdata/server-components/component/configuration",ComponentConfiguration.class);
digester.addCallMethod("gdata/server-components/component/configuration/property","set",2,new Class[]{String.class,String.class});
digester.addCallParam("gdata/server-components/component/configuration/property",0,"name");
digester.addCallParam("gdata/server-components/component/configuration/property",1);
//second parameter on registerComponent -- top of the stack (Component configuration)
digester.addCallParam("gdata/server-components/component/configuration",1,0);
digester.parse(RegistryBuilder.class
.getResourceAsStream("/gdata-config.xml"));
}
private static void addIndexRule(Digester digester){
digester.addObjectCreate("gdata/service/index-schema", IndexSchema.class);
digester.addSetNext("gdata/service/index-schema", "setIndexSchema");
digester.addSetProperties("gdata/service/index-schema");
digester.addSetProperties("gdata/service/index-schema/index");
digester.addBeanPropertySetter("gdata/service/index-schema/index/maxMergeDocs");
digester.addBeanPropertySetter("gdata/service/index-schema/index/maxBufferedDocs");
digester.addBeanPropertySetter("gdata/service/index-schema/index/maxFieldLength");
digester.addBeanPropertySetter("gdata/service/index-schema/index/mergeFactor");
digester.addBeanPropertySetter("gdata/service/index-schema/index/indexLocation");
digester.addBeanPropertySetter("gdata/service/index-schema/index/useCompoundFile");
digester.addCallMethod("gdata/service/index-schema/index/defaultAnalyzer", "serviceAnalyzer",1,new Class[]{Class.class});
//call method on top of the stack addSchemaField
digester.addCallMethod("gdata/service/index-schema/field","addSchemaField",1,new Class[]{IndexSchemaField.class});
digester.addObjectCreate("gdata/service/index-schema/field",IndexSchemaField.class);
//set parameter for method call -- parameter is IndexSchemaField
digester.addCallParam("gdata/service/index-schema/field",0,0);
digester.addSetProperties("gdata/service/index-schema/field");
digester.addBeanPropertySetter("gdata/service/index-schema/field/path");
digester.addBeanPropertySetter("gdata/service/index-schema/field/store","storeByName");
digester.addBeanPropertySetter("gdata/service/index-schema/field/index","indexByName");
digester.addBeanPropertySetter("gdata/service/index-schema/field/analyzer","analyzerClass");
// call method on top of the stack addSchemaField
digester.addCallMethod("gdata/service/index-schema/custom","addSchemaField",1,new Class[]{IndexSchemaField.class});
digester.addObjectCreate("gdata/service/index-schema/custom",IndexSchemaField.class);
//set parameter for method call -- parameter is IndexSchemaField
digester.addCallParam("gdata/service/index-schema/custom",0,0);
digester.addSetProperties("gdata/service/index-schema/custom");
digester.addBeanPropertySetter("gdata/service/index-schema/custom/path");
digester.addBeanPropertySetter("gdata/service/index-schema/custom/store","storeByName");
digester.addBeanPropertySetter("gdata/service/index-schema/custom/index","indexByName");
digester.addBeanPropertySetter("gdata/service/index-schema/custom/analyzer","analyzerClass");
digester.addBeanPropertySetter("gdata/service/index-schema/custom/field-class","fieldClass");
// digester.addCallMethod("gdata/service/index-schema/custom/field-class","fieldClass",1,new Class[]{Class.class});
// call method on top of the stack addSchemaField
digester.addCallMethod("gdata/service/index-schema/mixed","addSchemaField",1,new Class[]{IndexSchemaField.class});
digester.addObjectCreate("gdata/service/index-schema/mixed",IndexSchemaField.class);
//set parameter for method call -- parameter is IndexSchemaField
digester.addCallParam("gdata/service/index-schema/mixed",0,0);
digester.addSetProperties("gdata/service/index-schema/mixed");
digester.addBeanPropertySetter("gdata/service/index-schema/mixed","type");
digester.addBeanPropertySetter("gdata/service/index-schema/mixed/path");
digester.addBeanPropertySetter("gdata/service/index-schema/mixed/store","storeByName");
digester.addBeanPropertySetter("gdata/service/index-schema/mixed/index","indexByName");
digester.addBeanPropertySetter("gdata/service/index-schema/mixed/contenttype","typePath");
digester.addBeanPropertySetter("gdata/service/index-schema/mixed/analyzer","analyzerClass");
}
}
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