/*

  * Copyright 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.kim.dao.impl;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.List;

 import javax.persistence.EntityManager;

 import javax.persistence.PersistenceContext;

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

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

 import org.kuali.rice.kim.bo.role.KimPermission;

 import org.kuali.rice.kim.bo.role.impl.RolePermissionImpl;

 import org.kuali.rice.kim.dao.KimPermissionDao;

 ;

 /**

  * This is a description of what this class does - kellerj don't forget to fill this in. 

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  */

 public class KimPermissionDaoJpa implements KimPermissionDao {

     @PersistenceContext(unitName="kim-unit")

     private EntityManager entityManager;

         /**

          * @see org.kuali.rice.kim.dao.KimPermissionDao#getRoleIdsForPermissions(java.util.Collection)

          */

         @SuppressWarnings("unchecked")

         public List<String> getRoleIdsForPermissions(Collection<? extends KimPermission> permissions) {

                 if ( permissions.isEmpty() ) {

                         return new ArrayList<String>(0);

                 }

                 List<String> permissionIds = new ArrayList<String>( permissions.size() );

                 for ( KimPermission kp : permissions ) {

                         permissionIds.add( kp.getPermissionId() );

                 }

                 Criteria c = new Criteria(RolePermissionImpl.class.getName());

                 c.in( "permissionId", permissionIds );

                 c.eq( "active", true );

                 ArrayList<RolePermissionImpl> coll = (ArrayList<RolePermissionImpl>) new QueryByCriteria(entityManager, c).toQuery().getResultList();

                 List<String> roleIds = new ArrayList<String>( coll.size() );

                 for ( RolePermissionImpl rp : coll ) {

                         roleIds.add( rp.getRoleId() );

                 }

                 return roleIds;

         }

         public EntityManager getEntityManager() {

         return this.entityManager;

     }

     public void setEntityManager(EntityManager entityManager) {

         this.entityManager = entityManager;

     }

 }