/*

  * 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 java.util.List;

 import javax.persistence.EntityManager;

 import javax.persistence.PersistenceContext;

 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.kew.rule.bo.RuleAttribute;

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

 public class RuleAttributeDAOJpaImpl implements RuleAttributeDAO {

     @PersistenceContext

     private EntityManager entityManager;

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

     /**

          * @return the entityManager

          */

         public EntityManager getEntityManager() {

                 return this.entityManager;

         }

         /**

          * @param entityManager the entityManager to set

          */

         public void setEntityManager(EntityManager entityManager) {

                 this.entityManager = entityManager;

         }

         public void save(RuleAttribute ruleAttribute) {

         if (ruleAttribute.getRuleAttributeId() == null) {

             entityManager.persist(ruleAttribute);

         } else {

             OrmUtils.merge(entityManager, ruleAttribute);

         }

     }

     public void delete(String ruleAttributeId) {

         entityManager.remove(findByRuleAttributeId(ruleAttributeId));

     }

     public RuleAttribute findByRuleAttributeId(String ruleAttributeId) {

         return (RuleAttribute) entityManager.createNamedQuery("RuleAttribute.FindById").setParameter("ruleAttributeId", ruleAttributeId).getSingleResult();

     }

     public List<RuleAttribute> findByRuleAttribute(RuleAttribute ruleAttribute) {

         Criteria crit = new Criteria("RuleAttribute", "ra");

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

             crit.rawJpql("UPPER(RULE_ATTRIB_NM) like '" + ruleAttribute.getName().toUpperCase() + "'");

         }

         if (ruleAttribute.getClassName() != null) {

             crit.rawJpql("UPPER(RULE_ATTRIB_CLS_NM) like '" + ruleAttribute.getClassName().toUpperCase() + "'");

         }

         if (ruleAttribute.getType() != null) {

             crit.rawJpql("UPPER(RULE_ATTRIB_TYP) like '" + ruleAttribute.getType().toUpperCase() + "'");

         }

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

     }

     public List<RuleAttribute> getAllRuleAttributes() {

         return  entityManager.createNamedQuery("RuleAttribute.GetAllRuleAttributes").getResultList();

     }

     public RuleAttribute findByName(String name) {

         LOG.debug("findByName name=" + name);

         return (RuleAttribute) entityManager.createNamedQuery("RuleAttribute.FindByName").setParameter("name", name).getSingleResult();

     }

     public RuleAttribute findByClassName(String classname) {

         LOG.debug("findByClassName classname=" + classname);

         //FIXME: This query is returning multiple rows, which one should it return

         List<RuleAttribute> ruleAttributes = entityManager.createNamedQuery("RuleAttribute.FindByClassName").setParameter("className", classname).getResultList();

         return (ruleAttributes.size() > 0 ? ruleAttributes.get(0) : null); 

     }

 }