/*
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001-2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */


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();
        }
    }
}