/**

  * Copyright 2005-2011 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.kew.notes.dao.impl;

 import java.util.List;

 import javax.persistence.EntityManager;

 import javax.persistence.PersistenceContext;

 import javax.persistence.Query;

 import org.kuali.rice.core.framework.persistence.jpa.OrmUtils;

 import org.kuali.rice.kew.notes.Attachment;

 import org.kuali.rice.kew.notes.Note;

 import org.kuali.rice.kew.notes.dao.NoteDAO;

 public class NoteDAOJpaImpl implements NoteDAO {

         @PersistenceContext(unitName="kew-unit")

         EntityManager entityManager;

     public Note getNoteByNoteId(String noteId) {

             Query query = entityManager.createNamedQuery("KewNote.FindNoteByNoteId");

             query.setParameter("noteId", noteId);

         return (Note) query.getSingleResult();          

     }

     public List getNotesByDocumentId(String documentId) {

             Query query = entityManager.createNamedQuery("KewNote.FindNoteByDocumentId");

             query.setParameter("documentId", documentId);

         return (List) query.getResultList();        

     }

     public void saveNote(Note note) {

             if (note.getNoteId() == null){

                     entityManager.persist(note);

             } else {

                     entityManager.merge(note);

             }

     }

     public void deleteNote(Note note) {

             Note n = getNoteByNoteId(note.getNoteId());

             OrmUtils.merge(entityManager, n);

             entityManager.remove(n);

     }

     public void deleteAttachment(Attachment attachment) {

             Attachment a = findAttachment(attachment.getAttachmentId());

             entityManager.remove(a);

     }

     public Attachment findAttachment(String attachmentId) {

             Query query = entityManager.createNamedQuery("Attachment.FindAttachmentById");

             query.setParameter("attachmentId", attachmentId);

             return (Attachment)query.getSingleResult();

     }

     public EntityManager getEntityManager() {

         return this.entityManager;

     }

     public void setEntityManager(EntityManager entityManager) {

         this.entityManager = entityManager;

     }

 }