Commons Modeler example source code file (RegistryTask.java)

This example Commons Modeler source code file (RegistryTask.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons Modeler tags/keywords

buildexception, file, file, fileoutputstream, io, mbeansdescriptorsdomsource, net, network, objectoutputstream, objectoutputstream, registry, registrytask, registrytask, resource, string, string, url

The Commons Modeler RegistryTask.java source code

/*
 * 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.
 */


package org.apache.commons.modeler.ant;


import java.io.File;
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.net.URL;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.modeler.ManagedBean;
import org.apache.commons.modeler.Registry;
import org.apache.tools.ant.BuildException;

/**
 * Load descriptors into registry.
 *
 * @author Costin Manolache
 */
public final class RegistryTask  {
    private static Log log = LogFactory.getLog(RegistryTask.class);

    public RegistryTask() {
    }

    String resource;
    String file;
    String type="MbeansDescriptorsDOMSource";

    /** Set the resource type that will be loaded
     *
     * @param type
     */
    public void setType( String type ) {
        this.type=type;
    }

    public void setFile( String file ) {
        this.file=file;
    }

    public void setResource( String res ) {
        this.resource=res;
    }

    String outFile;

    public void setOut( String outFile ) {
        this.outFile=outFile;
    }

    public void execute() throws Exception {
        URL url=null;

        if( resource != null ) {
            url=this.getClass().getClassLoader().getResource(resource);
        } else if( file != null ) {
            File f=new File(file);
            url=new URL("file", null, f.getAbsolutePath());
        } else {
            throw new BuildException( "Resource or file attribute required");
        }

        Registry.getRegistry().loadDescriptors( type, url, null);

        if( outFile !=null ) {
            FileOutputStream fos=new FileOutputStream(outFile);
            ObjectOutputStream oos=new ObjectOutputStream(fos);
            Registry reg=Registry.getRegistry();
            String beans[]=reg.findManagedBeans();
            ManagedBean mbeans[]=new ManagedBean[beans.length];
            for( int i=0; i<beans.length; i++ ) {
                mbeans[i]=reg.findManagedBean(beans[i]);
            }
            oos.writeObject( mbeans );
            oos.flush();
            oos.close();
            fos.close();
        }
    }
}