/*

  * Copyright 2007-2008 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  * http://www.opensource.org/licenses/ecl2.php

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.krad.service;

 import org.kuali.rice.kim.bo.Person;

 import org.kuali.rice.krad.document.Document;

 import org.kuali.rice.krad.document.authorization.PessimisticLock;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 /**

  * This is the service interface for documents to use the Pessimistic Locking mechanism 

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  */

 public interface PessimisticLockService {

     /**

      * This method deletes the given lock object

      * 

      * @param id - the id of the lock to delete

      */

     public void delete(String id);

     /**

      * This method will generate a new {@link PessimisticLock} object with a 'document'

      * lock descriptor

      * 

      * @param documentNumber - the document number of the document associated with the new lock

      * @return the newly generated document descriptor {@link PessimisticLock}

      */

     public PessimisticLock generateNewLock(String documentNumber);

     /**

      * This method will generate a new {@link PessimisticLock} object with a lock descriptor of

      * the given parameter

      * 

      * @param documentNumber - the document number of the document associated with the new lock

      * @param lockDescriptor - the lock descriptor the new PessimisticLock object should contain

      * @return the newly generated {@link PessimisticLock} containing the given lockDescriptor

      */

     public PessimisticLock generateNewLock(String documentNumber, String lockDescriptor);

     /**

      * This method will generate a new {@link PessimisticLock} object with a 'document'

      * lock descriptor

      * 

      * @param documentNumber - the document number of the document associated with the new lock

      * @param user - the user to set on the new lock being generated

      * @return the newly generated document descriptor {@link PessimisticLock}

      */

     public PessimisticLock generateNewLock(String documentNumber, Person user);

     /**

      * This method will generate a new {@link PessimisticLock} object with a lock descriptor of

      * the given parameter

      * 

      * @param documentNumber - the document number of the document associated with the new lock

      * @param lockDescriptor - the lock descriptor the new PessimisticLock object should contain

      * @param user - the user to set on the new lock being generated

      * @return the newly generated {@link PessimisticLock} containing the given lockDescriptor

      */

     public PessimisticLock generateNewLock(String documentNumber, String lockDescriptor, Person user);

     /**

      * This method gets all locks associated with the given document number

      * 

      * @param documentNumber - the document number of the document requiring locks

      * @return an empty list if no locks are found or the list of {@link PessimisticLock} objects

      * found for the given documentNumber

      */

     public List<PessimisticLock> getPessimisticLocksForDocument(String documentNumber);

     /**

      * This method is used to identify who is an admin user for {@link PessimisticLock} objects

      * 

      * @param user - user to verify as admin

      * @return true if the given use is an admin user or false if not

      */

     public boolean isPessimisticLockAdminUser(Person user);

     /**

      * This method will release all locks in the given list that are owned by the given user

      * 

      * @param locks - locks to release if owned by given user

      * @param user - user to check for lock ownership

      */

     public void releaseAllLocksForUser(List<PessimisticLock> locks, Person user);

     /**

      * This method will release all locks in the given list that are owned by the given user that have a matching lock

      * descriptor value

      * 

      * @param locks - locks to release if owned by given user

      * @param user - user to check for lock ownership

      * @param lockDescriptor - lock descriptor value to match locks against

      */

     public void releaseAllLocksForUser(List<PessimisticLock> locks, Person user, String lockDescriptor);

     /**

      * This method saves the given lock object

      * 

      */

     public PessimisticLock save(PessimisticLock lock);

     /**

      * @param document - the document locks are to be established against or by

      * @param editMode - the editMode returned by the method {@link #getEditMode(Document, Person)}

      * @param user - the user locks are being established for

      * @return New map generated by locking logic combined with passed in parameter editMode.  Map contains keys 

      *         AuthorizationConstants.EditMode value (String) which indicates what operations the user is currently 

      *         allowed to take on that document.  This may be a modified list of 

      */

     public Map establishLocks(Document document, Map editMode, Person user);

     /**

      * @param document - the document to create the lock against and add the lock to

      */

     public void establishWorkflowPessimisticLocking(Document document);

     /**

      * @param document - document to release locks from

      */

     public void releaseWorkflowPessimisticLocking(Document document);

     /**

      * @param document

      * @param user

      * @return Set of actions are permitted the given user on the given document

      */

     public Set getDocumentActions(Document document, Person user, Set<String> documentActions);

 }