/*
|
* The contents of this file are subject to the terms of the Common Development and
|
* Distribution License (the License). You may not use this file except in compliance with the
|
* License.
|
*
|
* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
|
* specific language governing permission and limitations under the License.
|
*
|
* When distributing Covered Software, include this CDDL Header Notice in each file and include
|
* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
|
* Header, with the fields enclosed by brackets [] replaced by your own identifying
|
* information: "Portions Copyright [year] [name of copyright owner]".
|
*
|
* Copyright 2008 Sun Microsystems, Inc.
|
*/
|
package org.forgerock.opendj.config.server;
|
|
import java.util.Collection;
|
|
import org.forgerock.i18n.LocalizableMessage;
|
|
/**
|
* An interface for performing server-side constraint validation.
|
* <p>
|
* Constraints are evaluated immediately before and after write operations are
|
* performed. Server-side constraints are evaluated in two phases: the first
|
* phase determines if the proposed add, delete, or modification is acceptable
|
* according to the constraint. If one or more constraints fails, the write
|
* write operation is refused, and the client will receive an
|
* <code>OperationRejectedException</code> exception. The second phase is
|
* invoked once the add, delete, or modification request has been allowed and
|
* any changes applied. The second phase gives the constraint handler a chance
|
* to register listener call-backs if required.
|
* <p>
|
* A server constraint handler must override at least one of the provided
|
* methods.
|
*
|
* @see org.forgerock.opendj.config.Constraint
|
*/
|
public abstract class ServerConstraintHandler {
|
|
/**
|
* Creates a new server constraint handler.
|
*/
|
protected ServerConstraintHandler() {
|
// No implementation required.
|
}
|
|
/**
|
* Determines whether or not the existing managed object can be deleted from
|
* the server's configuration. For example, an implementation might enforce
|
* referential integrity by preventing referenced managed objects from being
|
* deleted.
|
* <p>
|
* If the constraint is not satisfied, the implementation must return
|
* <code>false</code> and add a message describing why the managed object
|
* cannot be deleted.
|
* <p>
|
* The default implementation is to return <code>true</code>.
|
*
|
* @param managedObject
|
* The managed object which is about to be deleted.
|
* @param unacceptableReasons
|
* A list of messages to which error messages should be added.
|
* @return Returns <code>true</code> if this constraint is satisfied, or
|
* <code>false</code> if it is not and the managed object cannot be
|
* deleted.
|
* @throws ConfigException
|
* If an configuration exception prevented this constraint from
|
* being evaluated.
|
*/
|
public boolean isDeleteAllowed(ServerManagedObject<?> managedObject,
|
Collection<LocalizableMessage> unacceptableReasons) throws ConfigException {
|
return true;
|
}
|
|
/**
|
* Determines whether or not the provided managed object can be used by the
|
* server. This method is invoked each time a managed object is decoded by
|
* the administration framework: when an attempt is made to add a new
|
* configuration, modify an existing configuration, or during server
|
* initialization. If the constraint is not satisfied the managed object
|
* will be rejected.
|
* <p>
|
* If the constraint is not satisfied, the implementation must return
|
* <code>false</code> and add a message describing why the managed object is
|
* not usable.
|
* <p>
|
* The default implementation is to return <code>true</code>.
|
*
|
* @param managedObject
|
* The new managed object.
|
* @param unacceptableReasons
|
* A list of messages to which error messages should be added.
|
* @return Returns <code>true</code> if this constraint is satisfied, or
|
* <code>false</code> if it is not and the managed object cannot be
|
* used.
|
* @throws ConfigException
|
* If an configuration exception prevented this constraint from
|
* being evaluated.
|
*/
|
public boolean isUsable(ServerManagedObject<?> managedObject, Collection<LocalizableMessage> unacceptableReasons)
|
throws ConfigException {
|
return true;
|
}
|
|
/**
|
* Performs any post-add processing required by this constraint. This method
|
* is invoked after a new managed object has been accepted for use by the
|
* administration framework. This might occur during initialization or when
|
* a managed object is added at run-time.
|
* <p>
|
* The default implementation is to do nothing.
|
*
|
* @param managedObject
|
* The managed object which has just been added to the server's
|
* configuration.
|
* @throws ConfigException
|
* If the post-add processing fails due to a configuration
|
* exception.
|
*/
|
public void performPostAdd(ServerManagedObject<?> managedObject) throws ConfigException {
|
// Do nothing.
|
}
|
|
/**
|
* Performs any post-delete processing required by this constraint. This
|
* method is invoked after a managed object has been accepted for deletion
|
* from the server's configuration.
|
* <p>
|
* The default implementation is to do nothing.
|
*
|
* @param managedObject
|
* The managed object which was deleted.
|
* @throws ConfigException
|
* If the post-delete processing fails due to a configuration
|
* exception.
|
*/
|
public void performPostDelete(ServerManagedObject<?> managedObject) throws ConfigException {
|
// Do nothing.
|
}
|
|
/**
|
* Performs any post-modify processing required by this constraint. This
|
* method is invoked after changes to an existing managed object have been
|
* accepted.
|
* <p>
|
* The default implementation is to do nothing.
|
*
|
* @param managedObject
|
* The managed object which was modified.
|
* @throws ConfigException
|
* If the post-modify processing fails due to a configuration
|
* exception.
|
*/
|
public void performPostModify(ServerManagedObject<?> managedObject) throws ConfigException {
|
// Do nothing.
|
}
|
}
|
