/*
|
* 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.
|
* Portions Copyright 2014 ForgeRock AS.
|
*/
|
package org.opends.server.admin.server;
|
|
|
|
import java.util.Collection;
|
|
import org.forgerock.i18n.LocalizableMessage;
|
import org.forgerock.opendj.config.server.ConfigException;
|
|
|
|
/**
|
* 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.opends.server.admin.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.
|
}
|
}
|
