Java example source code file (EventDirContext.java)

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

Learn more about this Java project at its project page.

Java - Java tags/keywords

eventcontext, eventdircontext, naming, namingexception, naminglistener, object, searchcontrols, string

The EventDirContext.java Java example source code

/*
 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javax.naming.event;
import javax.naming.Name;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.naming.directory.SearchControls;

/**
 * Contains methods for registering listeners to be notified
 * of events fired when objects named in a directory context changes.
 *<p>
 * The methods in this interface support identification of objects by
 * <A HREF="http://www.ietf.org/rfc/rfc2254.txt">RFC 2254
 * search filters.
 *
 *<P>Using the search filter, it is possible to register interest in objects
 * that do not exist at the time of registration but later come into existence and
 * satisfy the filter.  However, there might be limitations in the extent
 * to which this can be supported by the service provider and underlying
 * protocol/service.  If the caller submits a filter that cannot be
 * supported in this way, <tt>addNamingListener() throws an
 * <tt>InvalidSearchFilterException.
 *<p>
 * See <tt>EventContext for a description of event source
 * and target, and information about listener registration/deregistration
 * that are also applicable to methods in this interface.
 * See the
 * <a href=package-summary.html#THREADING>package description
 * for information on threading issues.
 *<p>
 * A <tt>SearchControls or array object
 * passed as a parameter to any method is owned by the caller.
 * The service provider will not modify the object or keep a reference to it.
 *
 * @author Rosanna Lee
 * @author Scott Seligman
 * @since 1.3
 */

public interface EventDirContext extends EventContext, DirContext {
    /**
     * Adds a listener for receiving naming events fired
     * when objects identified by the search filter <tt>filter at
     * the object named by target are modified.
     * <p>
     * The scope, returningObj flag, and returningAttributes flag from
     * the search controls <tt>ctls are used to control the selection
     * of objects that the listener is interested in,
     * and determines what information is returned in the eventual
     * <tt>NamingEvent object. Note that the requested
     * information to be returned might not be present in the <tt>NamingEvent
     * object if they are unavailable or could not be obtained by the
     * service provider or service.
     *
     * @param target The nonnull name of the object resolved relative to this context.
     * @param filter The nonnull string filter (see RFC2254).
     * @param ctls   The possibly null search controls. If null, the default
     *        search controls are used.
     * @param l  The nonnull listener.
     * @exception NamingException If a problem was encountered while
     * adding the listener.
     * @see EventContext#removeNamingListener
     * @see javax.naming.directory.DirContext#search(javax.naming.Name, java.lang.String, javax.naming.directory.SearchControls)
     */
    void addNamingListener(Name target, String filter, SearchControls ctls,
        NamingListener l) throws NamingException;

    /**
     * Adds a listener for receiving naming events fired when
     * objects identified by the search filter <tt>filter at the
     * object named by the string target name are modified.
     * See the overload that accepts a <tt>Name for details of
     * how this method behaves.
     *
     * @param target The nonnull string name of the object resolved relative to this context.
     * @param filter The nonnull string filter (see RFC2254).
     * @param ctls   The possibly null search controls. If null, the default
     *        search controls is used.
     * @param l  The nonnull listener.
     * @exception NamingException If a problem was encountered while
     * adding the listener.
     * @see EventContext#removeNamingListener
     * @see javax.naming.directory.DirContext#search(java.lang.String, java.lang.String, javax.naming.directory.SearchControls)
     */
    void addNamingListener(String target, String filter, SearchControls ctls,
        NamingListener l) throws NamingException;

    /**
     * Adds a listener for receiving naming events fired
     * when objects identified by the search filter <tt>filter and
     * filter arguments at the object named by the target are modified.
     * The scope, returningObj flag, and returningAttributes flag from
     * the search controls <tt>ctls are used to control the selection
     * of objects that the listener is interested in,
     * and determines what information is returned in the eventual
     * <tt>NamingEvent object.  Note that the requested
     * information to be returned might not be present in the <tt>NamingEvent
     * object if they are unavailable or could not be obtained by the
     * service provider or service.
     *
     * @param target The nonnull name of the object resolved relative to this context.
     * @param filter The nonnull string filter (see RFC2254).
     * @param filterArgs The possibly null array of arguments for the filter.
     * @param ctls   The possibly null search controls. If null, the default
     *        search controls are used.
     * @param l  The nonnull listener.
     * @exception NamingException If a problem was encountered while
     * adding the listener.
     * @see EventContext#removeNamingListener
     * @see javax.naming.directory.DirContext#search(javax.naming.Name, java.lang.String, java.lang.Object[], javax.naming.directory.SearchControls)
     */
    void addNamingListener(Name target, String filter, Object[] filterArgs,
        SearchControls ctls, NamingListener l) throws NamingException;

    /**
     * Adds a listener for receiving naming events fired when
     * objects identified by the search filter <tt>filter
     * and filter arguments at the
     * object named by the string target name are modified.
     * See the overload that accepts a <tt>Name for details of
     * how this method behaves.
     *
     * @param target The nonnull string name of the object resolved relative to this context.
     * @param filter The nonnull string filter (see RFC2254).
     * @param filterArgs The possibly null array of arguments for the filter.
     * @param ctls   The possibly null search controls. If null, the default
     *        search controls is used.
     * @param l  The nonnull listener.
     * @exception NamingException If a problem was encountered while
     * adding the listener.
     * @see EventContext#removeNamingListener
     * @see javax.naming.directory.DirContext#search(java.lang.String, java.lang.String, java.lang.Object[], javax.naming.directory.SearchControls)      */
    void addNamingListener(String target, String filter, Object[] filterArgs,
        SearchControls ctls, NamingListener l) throws NamingException;
}