multicastaddress.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

/*
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 *  "This product includes software developed by the
 *  Sun Microsystems, Inc. for Project JXTA."
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 *  if and wherever such third-party acknowledgments normally appear.
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 *  ====================================================================
 *
 *  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.
 *
 *  $Id: MulticastAddress.java,v 1.13 2005/12/14 02:13:41 gonzo Exp $
 */
package net.jxta.ext.config;

import java.net.URI;

/**
 * Multicast {@link net.jxta.ext.config.Address} implementation.
 *
 * <p>An {@link net.jxta.ext.config.Address} which represents a Multicast address.
 *
 * @author     james todd [gonzo at jxta dot org]
 */

public class MulticastAddress
    extends Address {

    private boolean isMulticast = Default.MULTICAST_IS_ENABLED;
    private int size = Default.MULTICAST_SIZE;

    /**
     * Default constructor.
     */
    
    public MulticastAddress() {
        this(null);
    }

    /**
     * Copy constructor.
     *
     * @param       ma      specified MulticastAddress
     */
    
    public MulticastAddress(MulticastAddress ma) {
        super(ma);

        setAddress(ma != null ? ma.getAddress() : Default.MULTICAST_ADDRESS);
        setMulticast(ma != null ? ma.isMulticast() : Default.MULTICAST_IS_ENABLED);
        setSize(ma != null ? ma.getSize() : Default.MULTICAST_SIZE);
    }

    /**
     * Accessor to multicast indicator.
     *
     * <p>Indicates this instance is enabled as a multicast address.
     *
     * @return          multicast indicator.
     */
    
    public boolean isMulticast() {
        return this.isMulticast;
    }
    
    /**
     * Specifies the multicast attribute.
     *
     * @param       isMulticast     specified multicast indicator
     */

    public void setMulticast(boolean isMulticast) {
        this.isMulticast = isMulticast;
    }

    /**
     * Accessor to the multicast size attribute.
     *
     * <p>Specifies the multicast size attribute.
     *
     * @return          size attribute
     */
    
    public int getSize() {
        return this.size;
    }
    
    /**
     * Specifies the size attribute.
     *
     * @param       size        specified multicast size
     */
    
    public void setSize(int size) {
        this.size = size;
    }

    /**
     * Specifies the multicast address.
     *
     * @param       multicastAddress        specified multicast address
     */
    
    public void setAddress(URI multicastAddress) {
        if (multicastAddress != null &&
            !multicastAddress.getScheme().equals(Default.ANY_UDP_ADDRESS.getScheme())) {
            throw new IllegalArgumentException("invalid multicast address: " +
                multicastAddress);
        }

        super.setAddress(multicastAddress);
    }
}