/*
    * Copyright 2007-2008 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.core.jpa.criteria;
  
  import javax.persistence.EntityManager;
  import javax.persistence.Query;
  
  
  /**
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class QueryByCriteria {
  
      private EntityManager entityManager;
      private Criteria criteria;
      private QueryByCriteriaType type;
      
      public enum QueryByCriteriaType {SELECT, DELETE}
      
      public QueryByCriteria(EntityManager entityManager, Criteria criteria) {
          this(entityManager, criteria, QueryByCriteriaType.SELECT);
      }
  
      public QueryByCriteria(EntityManager entityManager, Criteria criteria, QueryByCriteriaType type) {
          this.entityManager = entityManager;
          this.criteria = criteria;
          this.type = type;
      }
  
      public Query toQuery() {
          Query query = entityManager.createQuery(criteria.toQuery(type));
          if (criteria.getSearchLimit() != null) {
              query.setMaxResults(criteria.getSearchLimit());        	
          }
          criteria.prepareParameters(query);
          return query;
      }
      
      public Query toCountQuery() {
          Query query = entityManager.createQuery(criteria.toCountQuery());
          if (criteria.getSearchLimit() != null) {
              query.setMaxResults(criteria.getSearchLimit());        	
          }
          criteria.prepareParameters(query);
          return query;
      }
  
  }