/*

  * Copyright 2005-2008 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.kew.rule.dao.impl;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;

 import org.kuali.rice.core.api.util.RiceConstants;

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

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

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

 import org.kuali.rice.core.framework.persistence.platform.DatabasePlatform;

 import org.kuali.rice.kew.rule.bo.RuleTemplate;

 import org.kuali.rice.kew.rule.dao.RuleTemplateDAO;

 import javax.persistence.EntityManager;

 import javax.persistence.PersistenceContext;

 import java.util.List;

 public class RuleTemplateDAOJpaImpl implements RuleTemplateDAO {

         @PersistenceContext(unitName="kew-unit")

         private EntityManager entityManager;

     public List<RuleTemplate> findAll() {

         return entityManager.createNamedQuery("findAllOrderedByName").getResultList();

     }

     public RuleTemplate findByRuleTemplateName(String ruleTemplateName) {

         if (StringUtils.isBlank(ruleTemplateName)) {

                 return null;

         }

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

         crit.eq("name", ruleTemplateName);

         crit.orderBy("ruleTemplateId", false);

         List ruleTemplates =  new QueryByCriteria(entityManager, crit).toQuery().getResultList();

         if(ruleTemplates==null||ruleTemplates.size()==0){

                 return null;

         }

         return (RuleTemplate) ruleTemplates.get(0);

     }

     public List<RuleTemplate> findByRuleTemplate(RuleTemplate ruleTemplate) {

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

         if (ruleTemplate.getName() != null) {

           crit.rawJpql("UPPER(RULE_TMPL_NM) like '"+ ruleTemplate.getName().toUpperCase() +"'");

         }

         if (ruleTemplate.getDescription() != null) {

           crit.rawJpql("UPPER(RULE_TMPL_DESC) like '"+ ruleTemplate.getDescription().toUpperCase()+"'");

         }

         return new QueryByCriteria(entityManager, crit).toQuery().getResultList();

     }

     public void delete(String ruleTemplateId) {

             entityManager.remove(findByRuleTemplateId(ruleTemplateId));

     }

     public RuleTemplate findByRuleTemplateId(String ruleTemplateId) {

         return entityManager.find(RuleTemplate.class, ruleTemplateId);

      }

     public void save(RuleTemplate ruleTemplate) {

             if(ruleTemplate.getRuleTemplateId()==null){

                     entityManager.persist(ruleTemplate);

             }else{

                     OrmUtils.merge(entityManager, ruleTemplate);

             }

     }

     public String getNextRuleTemplateId() {

        return String.valueOf(getPlatform().getNextValSQL("KREW_RTE_TMPL_S", entityManager));

     }

     protected DatabasePlatform getPlatform() {

             return (DatabasePlatform)GlobalResourceLoader.getService(RiceConstants.DB_PLATFORM);

     }

     public EntityManager getEntityManager() {

         return this.entityManager;

     }

     public void setEntityManager(EntityManager entityManager) {

         this.entityManager = entityManager;

     }

 }