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package org.apache.catalina;


/**
 * <p>Decoupling interface which specifies that an implementing class is
 * associated with at most one <strong>Container</strong> instance.</p>
 *
 * @author Craig R. McClanahan
 * @author Peter Donald
 * @version $Revision: 1.3 $ $Date: 2007/05/05 05:31:51 $
 */

public interface Contained {


    //-------------------------------------------------------------- Properties


    /**
     * Return the <code>Container</code> with which this instance is associated
     * (if any); otherwise return <code>null</code>.
     */
    public Container getContainer();


    /**
     * Set the <code>Container</code> with which this instance is associated.
     *
     * @param container The Container instance with which this instance is to
     *  be associated, or <code>null</code> to disassociate this instance
     *  from any Container
     */
    public void setContainer(Container container);


}