org.drools.io.ResourceFactory Maven / Gradle / Ivy
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The Drools and jBPM public API which is backwards compatible between releases.
/*
* Copyright 2010 JBoss Inc
*
* 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.drools.io;
import java.io.File;
import java.io.InputStream;
import java.io.Reader;
import java.net.URL;
import org.drools.definition.KnowledgeDescr;
import org.drools.util.ServiceRegistryImpl;
/**
*
* Convenience Factory to provide Resource implementations for the desired IO resource.
*
*
*
* KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
* kbuilder.add( ResourceFactory.newUrlResource( "htp://www.domain.org/myProcess.bpmn2" ),
* ResourceType.BPMN2 );
*
*
*
* KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
* kbuilder.add( ResourceFactory.newClassPathResource( "htp://www.domain.org/myrules.drl", getClass() ),
* ResourceType.DRL );
*
*/
public class ResourceFactory {
private static ResourceFactoryService factoryService;
/**
* A Service that can be started, to provide notifications of changed Resources.
*
* @return
*/
public static ResourceChangeNotifier getResourceChangeNotifierService() {
return getFactoryService().getResourceChangeNotifierService();
}
/**
* As service, that scans the disk for changes, this acts as a Monitor for the Notifer service.
*
* @return
*/
public static ResourceChangeScanner getResourceChangeScannerService() {
return getFactoryService().getResourceChangeScannerService();
}
public static Resource newUrlResource(URL url) {
return getFactoryService().newUrlResource( url );
}
public static Resource newUrlResource(String path) {
return getFactoryService().newUrlResource( path );
}
public static Resource newFileResource(File file) {
return getFactoryService().newFileSystemResource( file );
}
public static Resource newFileResource(String fileName) {
return getFactoryService().newFileSystemResource( fileName );
}
public static Resource newByteArrayResource(byte[] bytes) {
return getFactoryService().newByteArrayResource( bytes );
}
public static Resource newInputStreamResource(InputStream stream) {
return getFactoryService().newInputStreamResource( stream );
}
public static Resource newInputStreamResource(InputStream stream,
String encoding) {
return getFactoryService().newInputStreamResource( stream,
encoding );
}
public static Resource newReaderResource(Reader reader) {
return getFactoryService().newReaderResource( reader );
}
public static Resource newReaderResource(Reader reader,
String encoding) {
return getFactoryService().newReaderResource( reader,
encoding );
}
public static Resource newClassPathResource(String path) {
return getFactoryService().newClassPathResource( path );
}
public static Resource newClassPathResource(String path,
Class clazz) {
return getFactoryService().newClassPathResource( path,
clazz );
}
public static Resource newClassPathResource(String path,
ClassLoader classLoader) {
return getFactoryService().newClassPathResource( path,
classLoader );
}
public static Resource newClassPathResource(String path,
String encoding) {
return getFactoryService().newClassPathResource( path,
encoding );
}
public static Resource newClassPathResource(String path,
String encoding,
Class clazz) {
return getFactoryService().newClassPathResource( path,
encoding,
clazz );
}
public static Resource newClassPathResource(String path,
String encoding,
ClassLoader classLoader) {
return getFactoryService().newClassPathResource( path,
encoding,
classLoader );
}
public static Resource newDescrResource( KnowledgeDescr descr ) {
return getFactoryService().newDescrResource( descr );
}
private static synchronized void setFactoryService(ResourceFactoryService factoryService) {
ResourceFactory.factoryService = factoryService;
}
private static synchronized ResourceFactoryService getFactoryService() {
if ( factoryService == null ) {
loadFactoryService();
}
return factoryService;
}
private static void loadFactoryService() {
setFactoryService( ServiceRegistryImpl.getInstance().get( ResourceFactoryService.class ) );
}
}
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