/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Copyright 2010 Sun Microsystems, Inc.
*/
package org.opends.server.api;
import org.opends.server.types.DirectoryException;
import org.opends.server.types.Entry;
/**
* This interface defines a mechanism that Directory Server components
* may use if they need to be notified of changes that are being made
* to subentries in the Directory Server.
* <BR><BR>
* Each change listener will be notified whenever an update is being
* made to subentry in the server, so the listener should use a very
* efficient mechanism for determining whether or not any action is
* required for the associated operation and quickly return for cases
* in which the update is not applicable.
* <BR><BR>
* The interface consists of two separate classes of methods. Check
* methods are invoked to verify that a specific operation performed
* on subentry is acceptable and if so the server may proceed with
* that operation further. Handle methods are invoked to notify that
* specific operation has occured on subentry thus serving purely as
* notification mechanism. While Check methods can affect the outcome
* of given operation Handle methods cannot affect the operation out-
* come in any way. Also note that Handle methods are invoked before
* any actual operation response to the client is sent.
* <BR><BR>
* This interface is intended for the server components that either
* require to track changes to subentries within the server or need
* to evaluate and take actions on specific changes being made to
* subentries within the server. Eg server components implementing
* their configuration objects as administrative subentries.
*/
@org.opends.server.types.PublicAPI(
stability=org.opends.server.types.StabilityLevel.VOLATILE,
mayInstantiate=false,
mayExtend=true,
mayInvoke=false)
public interface SubentryChangeListener
{
/**
* Performs any checking that may be required before
* subentry add operation.
* @param entry subentry being added to the server.
* @throws DirectoryException if operation is not
* acceptable for this subentry.
*/
public void checkSubentryAddAcceptable(Entry entry)
throws DirectoryException;
/**
* Performs any checking that may be required before
* subentry delete operation.
* @param entry subentry being deleted in the server.
* @throws DirectoryException if operation is not
* acceptable for this subentry.
*/
public void checkSubentryDeleteAcceptable(Entry entry)
throws DirectoryException;
/**
* Performs any checking that may be required before
* subentry modify operation.
* @param oldEntry subentry being modified in the server.
* @param newEntry subentry with modifications applied.
* @throws DirectoryException if operation is not
* acceptable for this subentry.
*/
public void checkSubentryModifyAcceptable(Entry oldEntry,
Entry newEntry) throws DirectoryException;
/**
* Performs any checking that may be required before
* subentry modify DN operation.
* @param oldEntry subentry being modified in the server.
* @param newEntry subentry with modifications applied.
* @throws DirectoryException if operation is not
* acceptable for this subentry.
*/
public void checkSubentryModifyDNAcceptable(Entry oldEntry,
Entry newEntry) throws DirectoryException;
/**
* Performs any processing that may be required after a
* subentry add operation.
*
* @param entry The subentry that was added to the
* server.
*/
public void handleSubentryAdd(Entry entry);
/**
* Performs any processing that may be required after a
* subentry delete operation.
*
* @param entry The subentry that was removed from the
* server.
*/
public void handleSubentryDelete(Entry entry);
/**
* Performs any processing that may be required after a
* subentry modify operation.
*
* @param oldEntry The subentry before it was updated.
* @param newEntry The subentry after it was updated.
*/
public void handleSubentryModify(Entry oldEntry, Entry newEntry);
/**
* Performs any processing that may be required after a
* subentry modify DN operation.
*
* @param oldEntry The subentry before it was updated.
* @param newEntry The subentry after it was updated.
*/
public void handleSubentryModifyDN(Entry oldEntry, Entry newEntry);
}