/*

  * Copyright 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/ecl1.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.impl.jaxb;

 import java.io.Serializable;

 import java.util.List;

 import java.util.Set;

 import javax.xml.bind.Marshaller;

 import javax.xml.bind.UnmarshalException;

 import javax.xml.bind.Unmarshaller;

 import javax.xml.bind.annotation.XmlAccessType;

 import javax.xml.bind.annotation.XmlAccessorType;

 import javax.xml.bind.annotation.XmlElement;

 import javax.xml.bind.annotation.XmlType;

 import org.kuali.rice.core.util.jaxb.RiceXmlExportList;

 import org.kuali.rice.core.util.jaxb.RiceXmlImportList;

 import org.kuali.rice.core.util.jaxb.RiceXmlListAdditionListener;

 import org.kuali.rice.core.util.jaxb.RiceXmlListGetterListener;

 import org.kuali.rice.kim.api.role.RoleContract;

 /**

  * This class represents a <roles> element. 

  * 

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

  */

 @XmlAccessorType(XmlAccessType.FIELD)

 @XmlType(name="RolesType", propOrder={"roles"})

 public class RolesXmlDTO implements RiceXmlListAdditionListener<RoleXmlDTO>, RiceXmlListGetterListener<RoleXmlDTO,Object>, Serializable {

     private static final long serialVersionUID = 1L;

     @XmlElement(name="role")

     private List<RoleXmlDTO> roles;

     public RolesXmlDTO() {}

     public RolesXmlDTO(List<? extends Object> rolesToExport) {

         this.roles = new RiceXmlExportList<RoleXmlDTO,Object>(rolesToExport, this);

     }

     public List<RoleXmlDTO> getRoles() {

         return roles;

     }

     public void setRoles(List<RoleXmlDTO> roles) {

         this.roles = roles;

     }

     void beforeUnmarshal(Unmarshaller unmarshaller, Object parent) {

         roles = new RiceXmlImportList<RoleXmlDTO>(this);

     }

     void afterUnmarshal(Unmarshaller unmarshaller, Object parent) {

         roles = null;

     }

     /**

      * @see org.kuali.rice.core.util.jaxb.RiceXmlListAdditionListener#newItemAdded(java.lang.Object)

      */

     public void newItemAdded(RoleXmlDTO item) {

         // Persist the role if it has not already been persisted yet.

         if (!item.isAlreadyPersisted()) {

             try {

                 RoleXmlUtil.validateAndPersistNewRole(item);

             } catch (UnmarshalException e) {

                 throw new RuntimeException(e);

             }

         }

         // If a "roleMembers" element was present, remove any existing roles that do not match the new ones.

         Set<String> existingRoleMemberIds = item.getExistingRoleMemberIds();

         if (existingRoleMemberIds != null) {

             RoleXmlUtil.removeRoleMembers(item.getRoleId(), existingRoleMemberIds);

         }

         item.setExistingRoleMemberIds(null);

     }

     void afterMarshal(Marshaller marshaller) {

         roles = null;

     }

     /**

      * @see org.kuali.rice.core.util.jaxb.RiceXmlListGetterListener#gettingNextItem(java.lang.Object, int)

      */

     public RoleXmlDTO gettingNextItem(Object nextItem, int index) {

         if (!(nextItem instanceof RoleContract)) {

             throw new IllegalStateException("Object for exportation should have been a role");

         }

         RoleContract role = ((RoleContract)nextItem);

         return new RoleXmlDTO(role, new RoleMembersXmlDTO.WithinRole(role.getId()), new RolePermissionsXmlDTO.WithinRole(role.getId()));

     }

 }