/*
 *  The Sun Project JXTA(TM) Software License
 *  
 *  Copyright (c) 2001-2007 Sun Microsystems, Inc. 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 acknowledgment: "This product includes software 
 *     developed by Sun Microsystems, Inc. for JXTA(TM) technology." 
 *     Alternately, this acknowledgment may appear in the software itself, if 
 *     and wherever such third-party acknowledgments normally appear.
 *  
 *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must 
 *     not be used to endorse or promote products derived from this software 
 *     without prior written permission. For written permission, please contact 
 *     Project JXTA at http://www.jxta.org.
 *  
 *  5. Products derived from this software may not be called "JXTA", nor may 
 *     "JXTA" appear in their name, without prior written permission of Sun.
 *  
 *  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 SUN 
 *  MICROSYSTEMS 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.
 *  
 *  JXTA is a registered trademark of Sun Microsystems, Inc. in the United 
 *  States and other countries.
 *  
 *  Please see the license information page at :
 *  <http://www.jxta.org/project/www/license.html> for instructions on use of 
 *  the license in source files.
 *  
 *  ====================================================================

 *  This software consists of voluntary contributions made by many individuals 
 *  on behalf of Project JXTA. For more information on Project JXTA, please see 
 *  http://www.jxta.org.
 *  
 *  This license is based on the BSD license adopted by the Apache Foundation. 
 */

package net.jxta.content;

/**
 * ContentTransfer event object, containing information related to the event
 * being published.
 */
public class ContentTransferAggregatorEvent extends ContentTransferEvent {

    /**
     * Serialized version.
     */
    private static final long serialVersionUID = 2009110500L;

    /**
     * Delegate ContentTransfer instance.
     */
    private final ContentTransfer delegate;
    
    /**
     * Builder pattern.
     */
    public static class Builder extends ContentTransferEvent.Builder {
        // Optional parameters:
        private ContentTransfer bDelegate;
        
        /**
         * Creates a new event builder instance.
         * 
         * @param source event source
         */
        public Builder(final ContentTransferAggregator source) {
            super(source);
        }
        
        /**
         * Sets the ContentTransfer which is the subject of the event.
         * 
         * @param value ContentTransfer to which this event pertains
         * @return builder instance
         */
        public Builder contentTransfer(final ContentTransfer value) {
            bDelegate = value;
            return this;
        }
        
        /**
         * Build the event instance.
         * 
         * @return event instance
         */
        @Override
        public ContentTransferAggregatorEvent build() {
            return new ContentTransferAggregatorEvent(this);
        }
    }

    /**
     * Creates a new instance of ContentTransferAggregatorEvent.
     *
     * @param builder builder instance
     */
    public ContentTransferAggregatorEvent(final Builder builder) {
        super(builder);
        delegate = builder.bDelegate;
    }

    /**
     * Get the ContentTransferAggregator which produced this event.
     *
     * @return the originator of this event
     */
    public ContentTransferAggregator getContentTransferAggregator() {
        return (ContentTransferAggregator) getSource();
    }

    /**
     * Get the ContentTransfer which the aggregator is working with.
     *
     * @return delegate ContentTransfer instance
     */
    public ContentTransfer getDelegateContentTransfer() {
        return delegate;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append("[");
        builder.append(getClass().getSimpleName());
        builder.append(": source=");
        builder.append(source);
        if (delegate != null) {
            builder.append(", delegate=");
            builder.append(delegate);
        }
        builder.append("]");
        return builder.toString();
    }

}