/**
    * 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.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.getId() == 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.getResourceDescriptor() != null) {
              crit.rawJpql("UPPER(RULE_ATTRIB_CLS_NM) like '" + ruleAttribute.getResourceDescriptor().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("resourceDescriptor", classname).getResultList();
  
          return (ruleAttributes.size() > 0 ? ruleAttributes.get(0) : null); 
     }
 
 }