/*

  * Copyright 2008-2009 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.edl.extract.dao.impl;

 import java.util.List;

 import javax.persistence.EntityManager;

 import javax.persistence.NoResultException;

 import javax.persistence.PersistenceContext;

 import org.kuali.rice.core.jpa.criteria.Criteria;

 import org.kuali.rice.core.jpa.criteria.QueryByCriteria;

 import org.kuali.rice.core.util.OrmUtils;

 import org.kuali.rice.kew.edl.extract.Dump;

 import org.kuali.rice.kew.edl.extract.Fields;

 import org.kuali.rice.kew.edl.extract.dao.ExtractDAO;

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

 public class ExtractDAOJpaImpl implements ExtractDAO {

     private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(ExtractDAOJpaImpl.class);

     @PersistenceContext(unitName = "kew-unit")

     private EntityManager entityManager;

     public Dump getDumpByRouteHeaderId(Long docId) {

         LOG.debug("finding Document Extract by routeHeaderId " + docId);

         Criteria crit = new Criteria(Dump.class.getName());

         crit.eq("docId", docId);

         try {

             return (Dump) new QueryByCriteria(entityManager, crit).toQuery().getSingleResult();

         } catch (NoResultException e) {

             return null;

         }

     }

     public List<Fields> getFieldsByRouteHeaderId(Long docId) {

         LOG.debug("finding Extract Fileds by routeHeaderId " + docId);

         Criteria crit = new Criteria(Fields.class.getName());

         crit.eq("routeHeaderId", docId);

         crit.orderBy("docId", true);

         return (List<Fields>) new QueryByCriteria(entityManager, crit).toQuery().getResultList();

     }

     public void saveDump(Dump dump) {

         LOG.debug("check for null values in Extract document");

         checkNull(dump.getDocId(), "Document ID");

         checkNull(dump.getDocCreationDate(), "Creation Date");

         checkNull(dump.getDocCurrentNodeName(), "Current Node Name");

         checkNull(dump.getDocModificationDate(), "Modification Date");

         checkNull(dump.getDocRouteStatusCode(), "Route Status Code");

         checkNull(dump.getDocInitiatorId(), "Initiator ID");

         checkNull(dump.getDocTypeName(), "Doc Type Name");

         LOG.debug("saving EDocLite document: routeHeader " + dump.getDocId());

         if (dump.getDocId() == null) {

             entityManager.persist(dump);

         } else {

             OrmUtils.merge(entityManager, dump);

         }

     }

     public void saveField(Fields field) {

         LOG.debug("saving EDocLite Extract fields");

         checkNull(field.getDocId(), "Document ID");

         checkNull(field.getFieldValue(), "Field Value");

         checkNull(field.getFiledName(), "Field Name");

         LOG.debug("saving Fields: routeHeader " + field.getFieldId());

         if (field.getFieldId() == null) {

             entityManager.persist(field);

         } else {

             OrmUtils.merge(entityManager, field);

         }

     }

     private void checkNull(Object value, String valueName) throws RuntimeException {

         if (value == null) {

             throw new RuntimeException("Null value for " + valueName);

         }

     }

     public void deleteDump(Long routeHeaderId) {

         LOG.debug("deleting record form Extract Dump table");

         entityManager.remove(entityManager.find(Note.class, routeHeaderId));

     }

     public EntityManager getEntityManager() {

         return this.entityManager;

     }

     public void setEntityManager(EntityManager entityManager) {

         this.entityManager = entityManager;

     }

 }