/*

  * 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.kim.service.impl;

 import org.apache.commons.lang.StringUtils;

 import org.apache.log4j.Logger;

 import org.kuali.rice.core.api.config.property.ConfigContext;

 import org.kuali.rice.kim.api.permission.Permission;

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

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

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

 import org.kuali.rice.kim.api.services.KimApiServiceLocator;

 import org.kuali.rice.kim.api.type.KimType;

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

 import org.kuali.rice.kim.bo.role.dto.KimPermissionInfo;

 import org.kuali.rice.kim.bo.role.dto.KimPermissionTemplateInfo;

 import org.kuali.rice.kim.bo.role.dto.PermissionAssigneeInfo;

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

 import org.kuali.rice.kim.bo.types.dto.AttributeDefinitionMap;

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

 import org.kuali.rice.kim.impl.permission.PermissionBo;

 import org.kuali.rice.kim.impl.permission.PermissionTemplateBo;

 import org.kuali.rice.kim.service.KIMServiceLocatorInternal;

 import org.kuali.rice.kim.service.PermissionService;

 import org.kuali.rice.kim.service.support.KimPermissionTypeService;

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

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

 import org.kuali.rice.kns.lookup.Lookupable;

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

 import org.kuali.rice.krad.datadictionary.AttributeDefinition;

 import org.kuali.rice.krad.lookup.CollectionIncomplete;

 import org.kuali.rice.krad.service.DataDictionaryService;

 import org.kuali.rice.krad.service.KRADServiceLocatorWeb;

 import org.kuali.rice.krad.util.KRADPropertyConstants;

 import javax.jws.WebService;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.Comparator;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 /**

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

  * 

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

  *

  */

 @WebService(endpointInterface = KIMWebServiceConstants.PermissionService.INTERFACE_CLASS, serviceName = KIMWebServiceConstants.PermissionService.WEB_SERVICE_NAME, portName = KIMWebServiceConstants.PermissionService.WEB_SERVICE_PORT, targetNamespace = KIMWebServiceConstants.MODULE_TARGET_NAMESPACE)

 public class PermissionServiceImpl extends PermissionServiceBase implements PermissionService {

         private static final Logger LOG = Logger.getLogger( PermissionServiceImpl.class );

            private RoleService roleService;

         private KimPermissionDao permissionDao;

     private KimPermissionTypeService defaultPermissionTypeService;

         private List<KimPermissionTemplateInfo> allTemplates;

     // --------------------

     // Authorization Checks

     // --------------------

         protected KimPermissionTypeService getPermissionTypeService( String namespaceCode, String permissionTemplateName, String permissionName, String permissionId ) {

                 StringBuffer cacheKey = new StringBuffer();

                 if ( namespaceCode != null ) {

                         cacheKey.append( namespaceCode );

                 }

                 cacheKey.append( '|' );

                 if ( permissionTemplateName != null ) {

                         cacheKey.append( permissionTemplateName );

                 }

                 cacheKey.append( '|' );

                 if ( permissionName != null ) {

                         cacheKey.append( permissionName );

                 }

                 cacheKey.append( '|' );

                 if ( permissionId != null ) {

                         cacheKey.append( permissionId );

                 }

                 String key = cacheKey.toString();

                 KimPermissionTypeService service = getPermissionTypeServiceByNameCache().get(key);

                 if ( service == null ) {

                         PermissionTemplateBo permTemplate = null;

                         if ( permissionTemplateName != null ) {

                                 List<PermissionBo> perms = getPermissionImplsByTemplateName(namespaceCode, permissionTemplateName);

                 if ( !perms.isEmpty() ) {

                                         permTemplate = perms.get(0).getTemplate();

                                 }

                         } else if ( permissionName != null ) {

                                 PermissionBo perms = getPermissionImplsByName(namespaceCode, permissionName);

                                 permTemplate = perms.getTemplate();

                         } else if ( permissionId != null ) {

                                 PermissionBo perm = getPermissionImpl(permissionId);

                                 if ( perm != null ) {

                                         permTemplate = perm.getTemplate();

                                 }

                         }

                         service = getPermissionTypeService( permTemplate );

                         getPermissionTypeServiceByNameCache().put(key, service);

                 }

                 return service;

         }

     protected KimPermissionTypeService getPermissionTypeService( PermissionTemplateBo permissionTemplate ) {

             if ( permissionTemplate == null ) {

                     throw new IllegalArgumentException( "permissionTemplate may not be null" );

             }

             KimType kimType = KimApiServiceLocator.getKimTypeInfoService().getKimType( permissionTemplate.getKimTypeId() );

             String serviceName = kimType.getServiceName();

             // if no service specified, return a default implementation

             if ( StringUtils.isBlank( serviceName ) ) {

                     return getDefaultPermissionTypeService();

             }

             try {

                     Object service = KIMServiceLocatorInternal.getService(serviceName);

                     // if we have a service name, it must exist

                     if ( service == null ) {

                                 throw new RuntimeException("null returned for permission type service for service name: " + serviceName);

                     }

                     // whatever we retrieved must be of the correct type

                     if ( !(service instanceof KimPermissionTypeService)  ) {

                             throw new RuntimeException( "Service " + serviceName + " was not a KimPermissionTypeService.  Was: " + service.getClass().getName() );

                     }

                     return (KimPermissionTypeService)service;

             } catch( Exception ex ) {

                     // sometimes service locators throw exceptions rather than returning null, handle that

                     throw new RuntimeException( "Error retrieving service: " + serviceName + " from the KIMServiceLocatorInternal.", ex );

             }

     }

     protected KimPermissionTypeService getDefaultPermissionTypeService() {

             if ( defaultPermissionTypeService == null ) {

                     defaultPermissionTypeService = (KimPermissionTypeService) KIMServiceLocatorInternal.getBean(DEFAULT_PERMISSION_TYPE_SERVICE);

             }

                 return defaultPermissionTypeService;

         }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#hasPermission(java.lang.String, String, java.lang.String, Map<String, String>)

      */

     public boolean hasPermission(String principalId, String namespaceCode, String permissionName, Map<String, String> permissionDetails) {

             return isAuthorized( principalId, namespaceCode, permissionName, permissionDetails, null );

     }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#isAuthorized( java.lang.String, String, java.lang.String, Map<String, String>, Map<String, String>)

      */

     public boolean isAuthorized(String principalId, String namespaceCode, String permissionName, Map<String, String> permissionDetails, Map<String, String> qualification ) {

             List<String> roleIds = getRoleIdsForPermission( namespaceCode, permissionName, permissionDetails );

             if ( roleIds.isEmpty() ) {

                     return false;

             }

                 return getRoleService().principalHasRole( principalId, roleIds, qualification );

     }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#hasPermission(String, String, String, Map<String, String>)

      */

     public boolean hasPermissionByTemplateName(String principalId, String namespaceCode, String permissionTemplateName, Map<String, String> permissionDetails) {

             return isAuthorizedByTemplateName( principalId, namespaceCode, permissionTemplateName, permissionDetails, null );

     }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#isAuthorized( java.lang.String, String, java.lang.String, Map<String, String>, Map<String, String>)

      */

     public boolean isAuthorizedByTemplateName(String principalId, String namespaceCode, String permissionTemplateName, Map<String, String> permissionDetails, Map<String, String> qualification ) {

             List<String> roleIds = getRoleIdsForPermissionTemplate( namespaceCode, permissionTemplateName, permissionDetails );

             if ( roleIds.isEmpty() ) {

                     return false;

             }

             return getRoleService().principalHasRole( principalId, roleIds, qualification );

     }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#getAuthorizedPermissions(String, String, String, Map<String, String>, Map<String, String>)

      */

     public List<Permission> getAuthorizedPermissions(String principalId, String namespaceCode, String permissionName, Map<String, String> permissionDetails, Map<String, String> qualification) {

             // get all the permission objects whose name match that requested

             PermissionBo permissions = getPermissionImplsByName( namespaceCode, permissionName );

             // now, filter the full list by the detail passed

             List<PermissionBo> applicablePermissions = getMatchingPermissions( Collections.singletonList(permissions), permissionDetails );

             List<PermissionBo> permissionsForUser =

                 getPermissionsForUser(principalId, applicablePermissions, qualification);

         List<Permission> returnList = new ArrayList<Permission>();

         for (PermissionBo bo : permissionsForUser) { returnList.add(PermissionBo.to(bo));}

         return returnList;

     }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#getAuthorizedPermissionsByTemplateName(String, String, String, Map<String, String>, Map<String, String>)

      */

     public List<Permission> getAuthorizedPermissionsByTemplateName(String principalId, String namespaceCode, String permissionTemplateName, Map<String, String> permissionDetails, Map<String, String> qualification) {

             // get all the permission objects whose name match that requested

             List<PermissionBo> permissions = getPermissionImplsByTemplateName( namespaceCode, permissionTemplateName );

             // now, filter the full list by the detail passed

             List<PermissionBo> applicablePermissions = getMatchingPermissions( permissions, permissionDetails );

         List<PermissionBo> permissionsForUser = getPermissionsForUser(principalId, applicablePermissions,

                 qualification);

         List<Permission> returnList = new ArrayList<Permission>();

         for (PermissionBo bo : permissionsForUser) { returnList.add(PermissionBo.to(bo)); }

         return returnList;

     }

     /**

      * Checks the list of permissions against the principal's roles and returns a subset of the list which match.

      */

     protected List<PermissionBo> getPermissionsForUser(String principalId, List<PermissionBo> permissions, Map<String, String> qualification) {

             ArrayList<PermissionBo> results = new ArrayList<PermissionBo>();

             List<PermissionBo> tempList = new ArrayList<PermissionBo>(1);

             for ( PermissionBo perm : permissions ) {

                     tempList.clear();

                     tempList.add( perm );

                     List<String> roleIds = permissionDao.getRoleIdsForPermissions( tempList );

                     // TODO: This could be made a little better by collecting the role IDs into

                     // a set and then processing the distinct list rather than a check

                     // for every permission

                     if ( roleIds != null && !roleIds.isEmpty() ) {

                             if ( getRoleService().principalHasRole( principalId, roleIds, qualification)) {

                                     results.add( perm );

                             }

                     }

             }

             return results;            

     }

     protected Map<String,KimPermissionTypeService> getPermissionTypeServicesByTemplateId( Collection<PermissionBo> permissions ) {

             Map<String,KimPermissionTypeService> permissionTypeServices = new HashMap<String, KimPermissionTypeService>( permissions.size() );

             for ( PermissionBo perm : permissions ) {

                     permissionTypeServices.put(perm.getTemplateId(), getPermissionTypeService( perm.getTemplate() ) );                                    

             }

             return permissionTypeServices;

     }

     protected Map<String, List<PermissionBo>> groupPermissionsByTemplate(Collection<PermissionBo> permissions) {

             Map<String, List<PermissionBo>> results = new HashMap<String, List<PermissionBo>>();

             for ( PermissionBo perm : permissions ) {

                     List<PermissionBo> perms = results.get(perm.getTemplateId());

                     if ( perms == null ) {

                             perms = new ArrayList<PermissionBo>();

                             results.put( perm.getTemplateId(), perms );

                     }

                     perms.add( perm);

             }

             return results;

     }

         /**

      * Compare each of the passed in permissions with the given permissionDetails.  Those that

      * match are added to the result list.

      */

     protected List<PermissionBo> getMatchingPermissions(List<PermissionBo> permissions, Map<String, String> permissionDetails) {

             List<PermissionBo> applicablePermissions = new ArrayList<PermissionBo>();

             if ( permissionDetails == null || permissionDetails.isEmpty() ) {

                     // if no details passed, assume that all match

                     for ( PermissionBo perm : permissions ) {

                             if (perm != null) {

                     applicablePermissions.add( perm );

                 }

                     }

             } else {

                     // otherwise, attempt to match the permission details

                     // build a map of the template IDs to the type services

                     Map<String,KimPermissionTypeService> permissionTypeServices = getPermissionTypeServicesByTemplateId( permissions );

                     // build a map of permissions by template ID

                     Map<String, List<PermissionBo>> permissionMap = groupPermissionsByTemplate(permissions);

                     // loop over the different templates, matching all of the same template against the type

                     // service at once

                     for ( String templateId : permissionMap.keySet() ) {

                             KimPermissionTypeService permissionTypeService = permissionTypeServices.get( templateId );

                             List<PermissionBo> permissionList = permissionMap.get(templateId);

                 List<Permission> immutablePermissionList = new ArrayList<Permission>();

                 for (PermissionBo bo : permissionList) {immutablePermissionList.add(PermissionBo.to(bo));}

                 List<Permission> matchingPermissions = permissionTypeService.getMatchingPermissions(

                         permissionDetails, immutablePermissionList );

                 List<PermissionBo> matchingPermissionBos = new ArrayList<PermissionBo>();

                 for (Permission perm : matchingPermissions) {matchingPermissionBos.add(PermissionBo.from(perm)); }

                                 applicablePermissions.addAll(matchingPermissionBos);

                     }

             }

             return applicablePermissions;

     }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#getPermissionAssignees(String, String, Map<String, String>, Map<String, String>)

      */

     public List<PermissionAssigneeInfo> getPermissionAssignees( String namespaceCode, String permissionName, Map<String, String> permissionDetails, Map<String, String> qualification ) {

             List<PermissionAssigneeInfo> results = new ArrayList<PermissionAssigneeInfo>();

             List<String> roleIds = getRoleIdsForPermission( namespaceCode, permissionName, permissionDetails);

             if ( roleIds.isEmpty() ) {

                     return results;

             }

             Collection<RoleMembership> roleMembers = getRoleService().getRoleMembers( roleIds,

                 qualification );

             for ( RoleMembership rm : roleMembers ) {

                     if ( rm.getMemberTypeCode().equals( Role.PRINCIPAL_MEMBER_TYPE ) ) {

                             results.add( new PermissionAssigneeInfo( rm.getMemberId(), null, rm.getDelegates() ) );

                     } else if ( rm.getMemberTypeCode().equals( Role.GROUP_MEMBER_TYPE ) ) {

                             results.add( new PermissionAssigneeInfo( null, rm.getMemberId(), rm.getDelegates() ) );

                     }

             }

             return results;

     }

     public List<PermissionAssigneeInfo> getPermissionAssigneesForTemplateName( String namespaceCode, String permissionTemplateName, Map<String, String> permissionDetails, Map<String, String> qualification ) {

             List<PermissionAssigneeInfo> results = new ArrayList<PermissionAssigneeInfo>();

             List<String> roleIds = getRoleIdsForPermissionTemplate( namespaceCode, permissionTemplateName, permissionDetails);

             if ( roleIds.isEmpty() ) {

                     return results;

             }

             Collection<RoleMembership> roleMembers = getRoleService().getRoleMembers( roleIds,

                 qualification);

             for ( RoleMembership rm : roleMembers ) {

                     if ( rm.getMemberTypeCode().equals( Role.PRINCIPAL_MEMBER_TYPE ) ) {

                             results.add( new PermissionAssigneeInfo( rm.getMemberId(), null, rm.getDelegates() ) );

                     } else { // a group membership

                             results.add( new PermissionAssigneeInfo( null, rm.getMemberId(), rm.getDelegates() ) );

                     }

             }

             return results;

     }

     public boolean isPermissionAssigned( String namespaceCode, String permissionName, Map<String, String> permissionDetails ) {

             return !getRoleIdsForPermission(namespaceCode, permissionName, permissionDetails).isEmpty();

     }

     public boolean isPermissionDefined( String namespaceCode, String permissionName, Map<String, String> permissionDetails ) {

             // get all the permission objects whose name match that requested

             PermissionBo permissions = getPermissionImplsByName( namespaceCode, permissionName );

             // now, filter the full list by the detail passed

             return !getMatchingPermissions( Collections.singletonList(permissions), permissionDetails ).isEmpty();

     }

     public boolean isPermissionDefinedForTemplateName( String namespaceCode, String permissionTemplateName, Map<String, String> permissionDetails ) {

             // get all the permission objects whose name match that requested

             List<PermissionBo> permission = getPermissionImplsByTemplateName( namespaceCode, permissionTemplateName );

             // now, filter the full list by the detail passed

         if (permission != null) {

                 return !getMatchingPermissions( permission, permissionDetails ).isEmpty();

         }

         return false;

     }

     public List<String> getRoleIdsForPermission( String namespaceCode, String permissionName, Map<String, String> permissionDetails) {

             // get all the permission objects whose name match that requested

             PermissionBo permissions = getPermissionImplsByName( namespaceCode, permissionName );

             // now, filter the full list by the detail passed

             List<PermissionBo> applicablePermissions = getMatchingPermissions( Collections.singletonList( permissions ), permissionDetails );

             List<String> roleIds = getRolesForPermissionsFromCache( applicablePermissions );

             if ( roleIds == null ) {

                     roleIds = permissionDao.getRoleIdsForPermissions( applicablePermissions );

                     addRolesForPermissionsToCache( applicablePermissions, roleIds );

             }

             return roleIds;            

     }

     protected List<String> getRoleIdsForPermissionTemplate( String namespaceCode, String permissionTemplateName, Map<String, String> permissionDetails ) {

             // get all the permission objects whose name match that requested

             List<PermissionBo> permissions = getPermissionImplsByTemplateName( namespaceCode, permissionTemplateName );

             // now, filter the full list by the detail passed

             List<PermissionBo> applicablePermissions = getMatchingPermissions( permissions, permissionDetails );

             List<String> roleIds = getRolesForPermissionsFromCache( applicablePermissions );

             if ( roleIds == null ) {

                     roleIds = permissionDao.getRoleIdsForPermissions( applicablePermissions );

                     addRolesForPermissionsToCache( applicablePermissions, roleIds );

             }

             return roleIds;

     }

     @Override

     public List<String> getRoleIdsForPermissions( List<Permission> permissions ) {

         List<PermissionBo> permBos = new ArrayList<PermissionBo>();

         for (Permission perm : permissions) { permBos.add(PermissionBo.from(perm));}

             List<String> roleIds = getRolesForPermissionsFromCache( permBos );

             if ( roleIds == null ) {

                     roleIds = permissionDao.getRoleIdsForPermissions( permBos );

                     addRolesForPermissionsToCache( permBos, roleIds );

             }

             return roleIds;

     }

     // --------------------

     // Permission Data

     // --------------------

     /**

      * @see org.kuali.rice.kim.service.PermissionService#getPermission(java.lang.String)

      */

     public Permission getPermission(String permissionId) {

             PermissionBo impl = getPermissionImpl( permissionId );

             if ( impl != null ) {

                     return PermissionBo.to(impl);

             }

             return null;

     }

     /**

      * @see org.kuali.rice.kim.service.PermissionService#getPermissionsByTemplateName(String, String)

      */

     public List<Permission> getPermissionsByTemplateName(String namespaceCode, String permissionTemplateName) {

         List<PermissionBo> impls = getPermissionImplsByTemplateName( namespaceCode, permissionTemplateName );

         List<Permission> permissions = new ArrayList<Permission>(impls.size());

         for (PermissionBo impl : impls) {

             permissions.add(PermissionBo.to(impl));

         }

             return permissions;

     }

         /**

      * @see org.kuali.rice.kim.service.PermissionService#getPermissionsByName(String, String)

      */

     public Permission getPermissionsByName(String namespaceCode, String permissionName) {

             PermissionBo impls = getPermissionImplsByName( namespaceCode, permissionName );

         return PermissionBo.to(impls);

     }

     @SuppressWarnings("unchecked")

         protected PermissionBo getPermissionImpl(String permissionId) {

             if ( StringUtils.isBlank( permissionId ) ) {

                     return null;

             }

             PermissionBo permissions  = getBusinessObjectService().findByPrimaryKey( PermissionBo.class, Collections.singletonMap(KimConstants.PrimaryKeyConstants.ID, permissionId) );

             return permissions;

     }

     @SuppressWarnings("unchecked")

         protected List<PermissionBo> getPermissionImplsByTemplateName( String namespaceCode, String permissionTemplateName ) {

         HashMap<String,Object> pk = new HashMap<String,Object>( 3 );

         pk.put( "template.namespaceCode", namespaceCode );

         pk.put( "template.name", permissionTemplateName );

         pk.put( KRADPropertyConstants.ACTIVE, "Y" );

         return new ArrayList<PermissionBo>(getBusinessObjectService().findMatching( PermissionBo.class, pk ));

     }

     @SuppressWarnings("unchecked")

         protected PermissionBo getPermissionImplsByName( String namespaceCode, String permissionName ) {

         HashMap<String,Object> pk = new HashMap<String,Object>( 3 );

         pk.put( KimConstants.UniqueKeyConstants.NAMESPACE_CODE, namespaceCode );

         pk.put( KimConstants.UniqueKeyConstants.PERMISSION_NAME, permissionName );

         pk.put( KRADPropertyConstants.ACTIVE, "Y" );

         Collection<PermissionBo> c = getBusinessObjectService().findMatching( PermissionBo.class, pk );

         return c != null && c.iterator().hasNext() ? c.iterator().next() : null;

     }

     // --------------------

     // Support Methods

     // --------------------

         protected RoleService getRoleService() {

                 if ( roleService == null ) {

                         roleService = KimApiServiceLocator.getRoleService();

                 }

                 return roleService;

         }

         public void setRoleService(RoleService roleService) {

                 this.roleService = roleService;

         }

         public KimPermissionDao getPermissionDao() {

                 return this.permissionDao;

         }

         public void setPermissionDao(KimPermissionDao permissionDao) {

                 this.permissionDao = permissionDao;

         }

         @SuppressWarnings("unchecked")

         public List<Permission> lookupPermissions(Map<String, String> searchCriteria, boolean unbounded){

                 Collection baseResults = null;

                 Lookupable permissionLookupable = KNSServiceLocator.getLookupable(

                 KRADServiceLocatorWeb.getBusinessObjectDictionaryService().getLookupableID(PermissionImpl.class));

                 permissionLookupable.setBusinessObjectClass(PermissionImpl.class);

                 if ( unbounded ) {

                     baseResults = permissionLookupable.getSearchResultsUnbounded( searchCriteria );

                 } else {

                         baseResults = permissionLookupable.getSearchResults(searchCriteria);

                 }

                 List<Permission> results = new ArrayList<Permission>( baseResults.size() );

                 for ( PermissionBo resp : (Collection<PermissionBo>)baseResults ) {

                         results.add( PermissionBo.to(resp) );

                 }

                 if ( baseResults instanceof CollectionIncomplete ) {

                         results = new CollectionIncomplete<Permission>( results, ((CollectionIncomplete<KimPermissionInfo>)baseResults).getActualSizeIfTruncated() );

                 }                

                 return results;

         }

         public String getPermissionDetailLabel( String permissionId, String kimTypeId, String attributeName) {

             // get the type service for this permission

                 KimPermissionTypeService typeService = getPermissionTypeService(null, null, null, permissionId);

                 if ( typeService != null ) {

                         // ask the type service for the attribute definition for the given attribute name

                         AttributeDefinitionMap attributes = typeService.getAttributeDefinitions( kimTypeId );

                         String label = null;

                         for ( AttributeDefinition attributeDef : attributes.values() ) {

                                 if ( attributeDef.getName().equals(attributeName) ) {

                                         label = attributeDef.getLabel();

                                 }

                         }

                         // return the attribute label

                         if ( label != null ) {

                                 return label;

                         } else {

                                 return "Missing Def: " + attributeName;

                         }

                 } else {

                         return "No Label: " + attributeName;

                 }

         }

         /**

          * @see org.kuali.rice.kim.service.PermissionService#getPermissionTemplate(java.lang.String)

          */

         public KimPermissionTemplateInfo getPermissionTemplate(String permissionTemplateId) {

                 KimPermissionTemplateImpl impl = getBusinessObjectService().findBySinglePrimaryKey( KimPermissionTemplateImpl.class, permissionTemplateId );

                 if ( impl != null ) {

                         return impl.toSimpleInfo();

                 }

                 return null;

         }

         /**

          * This overridden method ...

          * 

          * @see org.kuali.rice.kim.service.PermissionService#getPermissionTemplateByName(java.lang.String, java.lang.String)

          */

         public KimPermissionTemplateInfo getPermissionTemplateByName(String namespaceCode,

                         String permissionTemplateName) {

                 Map<String,String> criteria = new HashMap<String,String>(2);

                 criteria.put( KimConstants.UniqueKeyConstants.NAMESPACE_CODE, namespaceCode );

                 criteria.put( KimConstants.UniqueKeyConstants.PERMISSION_TEMPLATE_NAME, permissionTemplateName );

                 KimPermissionTemplateImpl impl = (KimPermissionTemplateImpl)getBusinessObjectService().findByPrimaryKey( KimPermissionTemplateImpl.class, criteria );

                 if ( impl != null ) {

                         return impl.toSimpleInfo();

                 }

                 return null;

         }

         @SuppressWarnings("unchecked")

         public List<KimPermissionTemplateInfo> getAllTemplates() {

                 if ( allTemplates == null ) {

                         Map<String,String> criteria = new HashMap<String,String>(1);

                         criteria.put( KRADPropertyConstants.ACTIVE, "Y" );

                         List<KimPermissionTemplateImpl> impls = (List<KimPermissionTemplateImpl>)getBusinessObjectService().findMatching( KimPermissionTemplateImpl.class, criteria );

                         List<KimPermissionTemplateInfo> infos = new ArrayList<KimPermissionTemplateInfo>( impls.size() );

                         for ( KimPermissionTemplateImpl impl : impls ) {

                                 infos.add( impl.toSimpleInfo() );

                         }

                         Collections.sort(infos, new Comparator<KimPermissionTemplateInfo>() {

                                 public int compare(KimPermissionTemplateInfo tmpl1,

                                                 KimPermissionTemplateInfo tmpl2) {

                                         int result = 0;

                                         result = tmpl1.getNamespaceCode().compareTo(tmpl2.getNamespaceCode());

                                         if ( result != 0 ) {

                                                 return result;

                                         }

                                         result = tmpl1.getName().compareTo(tmpl2.getName());

                                         return result;

                                 }

                         });

                         allTemplates = infos;

                 }

                 return allTemplates;

         }

         private DataDictionaryService dataDictionaryService;

         protected DataDictionaryService getDataDictionaryService() {

                 if(dataDictionaryService == null){

                         dataDictionaryService = KRADServiceLocatorWeb.getDataDictionaryService();

                 }

                 return dataDictionaryService;

         }

     public List<String> getRoleIdsForPermissionId(String permissionId) {

         Permission permissionInfo = getPermission(permissionId);

         List<PermissionBo> applicablePermissions = new ArrayList<PermissionBo>();

         applicablePermissions.add(PermissionBo.from(permissionInfo));

         List<String> roleIds = getRolesForPermissionsFromCache(applicablePermissions);

         if (roleIds == null) {

             roleIds = permissionDao.getRoleIdsForPermissions(applicablePermissions);

             addRolesForPermissionsToCache(applicablePermissions, roleIds);

         }

         return roleIds;

     }

     public Permission getPermissionsByNameIncludingInactive(String namespaceCode, String permissionName) {

         PermissionBo impls = getPermissionImplsByNameIncludingInactive(namespaceCode, permissionName);

         return PermissionBo.to(impls);

     }

     @SuppressWarnings("unchecked")

     protected PermissionBo getPermissionImplsByNameIncludingInactive(String namespaceCode, String permissionName) {

         HashMap<String, Object> pk = new HashMap<String, Object>(2);

         pk.put(KimConstants.UniqueKeyConstants.NAMESPACE_CODE, namespaceCode);

         pk.put(KimConstants.UniqueKeyConstants.PERMISSION_NAME, permissionName);

         Collection<PermissionBo> c = getBusinessObjectService().findMatching( PermissionBo.class, pk );

         return c != null && c.iterator().hasNext() ? c.iterator().next() : null;

     }

     public int getRefreshPeriodInSeconds() {

         try {

             return (int)(new Integer(ConfigContext.getCurrentContextConfig().getProperty(KimConstants.CacheRefreshPeriodSeconds.KIM_CACHE_PERMISSION_REFRESH_PERIOD_SECONDS)));

         } catch (NumberFormatException e) {

                     // The cache will never expire when refreshPeriod is set to -1

                     return -1;                        

         }

     }

 }