/*

  * Copyright 2007-2009 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.List;

 import java.util.Map;

 import java.util.Map.Entry;

 import javax.persistence.EntityManager;

 import javax.persistence.PersistenceContext;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.kim.bo.entity.impl.KimPrincipalImpl;

 import org.kuali.rice.kim.bo.group.impl.GroupAttributeDataImpl;

 import org.kuali.rice.kim.bo.group.impl.GroupMemberImpl;

 import org.kuali.rice.kim.bo.impl.GroupImpl;

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

 import org.kuali.rice.kim.util.KIMPropertyConstants;

 import org.kuali.rice.kns.datadictionary.BusinessObjectEntry;

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

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

 import org.kuali.rice.kns.service.KNSServiceLocatorWeb;

 /**

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

  * 

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

  *

  */

 public class KimGroupDaoJpa implements KimGroupDao {

     @PersistenceContext(unitName="kim-unit")

     private EntityManager entityManager;

     public List<GroupImpl> getGroups(Map<String,String> fieldValues) {

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

         BusinessObjectEntry boEntry = KNSServiceLocatorWeb.getDataDictionaryService().getDataDictionary().getBusinessObjectEntry("org.kuali.rice.kim.bo.impl.GroupImpl");

         List lookupNames = boEntry.getLookupDefinition().getLookupFieldNames();

         String kimTypeId = null;

         for (Map.Entry<String,String> entry : fieldValues.entrySet()) {

                 if (entry.getKey().equals("kimTypeId")) {

                         kimTypeId=entry.getValue();

                         break;

                 }

         }

         for (Entry<String, String> entry : fieldValues.entrySet()) {

                 if (StringUtils.isNotBlank(entry.getValue())) {

                         if (entry.getKey().contains(".")) {

                         Criteria subCrit = new Criteria(GroupAttributeDataImpl.class.getName());

                                 String value = entry.getValue().replace('*', '%');

                                 subCrit.like("attributeValue",value);

                                 subCrit.eq("kimAttributeId",entry.getKey().substring(entry.getKey().indexOf(".")+1, entry.getKey().length()));

                                 subCrit.eq("kimTypeId", kimTypeId);

                                 crit.and(subCrit);

                         } else {

                                 if (lookupNames.contains(entry.getKey())) {

                                     String value = entry.getValue().replace('*', '%');

                                         crit.like(entry.getKey(), value);

                                 } else {

                                         if (entry.getKey().equals(KIMPropertyConstants.Person.PRINCIPAL_NAME)) {

                                 Criteria subCrit = new Criteria(KimPrincipalImpl.class.getName());

                                         String principalName = entry.getValue().replace('*', '%');

                                         subCrit.like(KIMPropertyConstants.Person.PRINCIPAL_NAME, principalName );

                                         subCrit.eq(KIMPropertyConstants.Person.PRINCIPAL_ID, crit.getAlias() + KIMPropertyConstants.KimMember.MEMBER_ID);

                                 Criteria memberSubCrit = new Criteria(GroupMemberImpl.class.getName());

                                 memberSubCrit.eq(KIMPropertyConstants.Group.GROUP_ID, crit.getAlias() + KIMPropertyConstants.Group.GROUP_ID);

                                 memberSubCrit.and(subCrit);

                                         crit.and(memberSubCrit);                                                

                                         }

                                 }

                         }

                 }

         }

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

     }

     public EntityManager getEntityManager() {

         return this.entityManager;

     }

     public void setEntityManager(EntityManager entityManager) {

         this.entityManager = entityManager;

     }

 }