/**

  * Copyright 2010 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.osedu.org/licenses/ECL-2.0

  *

  * 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.student.lum.lo.service.impl;

 import java.util.ArrayList;

 import java.util.List;

 import javax.jws.WebService;

 import org.kuali.student.common.validator.Validator;

 import org.kuali.student.common.validator.ValidatorFactory;

 import org.kuali.student.core.dictionary.dto.ObjectStructureDefinition;

 import org.kuali.student.core.dictionary.service.DictionaryService;

 import org.kuali.student.core.dto.StatusInfo;

 import org.kuali.student.core.exceptions.AlreadyExistsException;

 import org.kuali.student.core.exceptions.DataValidationErrorException;

 import org.kuali.student.core.exceptions.DependentObjectsExistException;

 import org.kuali.student.core.exceptions.DoesNotExistException;

 import org.kuali.student.core.exceptions.InvalidParameterException;

 import org.kuali.student.core.exceptions.MissingParameterException;

 import org.kuali.student.core.exceptions.OperationFailedException;

 import org.kuali.student.core.exceptions.PermissionDeniedException;

 import org.kuali.student.core.exceptions.UnsupportedActionException;

 import org.kuali.student.core.exceptions.VersionMismatchException;

 import org.kuali.student.core.search.dto.SearchCriteriaTypeInfo;

 import org.kuali.student.core.search.dto.SearchParam;

 import org.kuali.student.core.search.dto.SearchRequest;

 import org.kuali.student.core.search.dto.SearchResult;

 import org.kuali.student.core.search.dto.SearchResultCell;

 import org.kuali.student.core.search.dto.SearchResultRow;

 import org.kuali.student.core.search.dto.SearchResultTypeInfo;

 import org.kuali.student.core.search.dto.SearchTypeInfo;

 import org.kuali.student.core.search.service.SearchManager;

 import org.kuali.student.core.validation.dto.ValidationResultInfo;

 import org.kuali.student.lum.lo.dao.LoDao;

 import org.kuali.student.lum.lo.dto.LoCategoryInfo;

 import org.kuali.student.lum.lo.dto.LoCategoryTypeInfo;

 import org.kuali.student.lum.lo.dto.LoInfo;

 import org.kuali.student.lum.lo.dto.LoLoRelationInfo;

 import org.kuali.student.lum.lo.dto.LoLoRelationTypeInfo;

 import org.kuali.student.lum.lo.dto.LoRepositoryInfo;

 import org.kuali.student.lum.lo.dto.LoTypeInfo;

 import org.kuali.student.lum.lo.entity.Lo;

 import org.kuali.student.lum.lo.entity.LoCategory;

 import org.kuali.student.lum.lo.entity.LoCategoryType;

 import org.kuali.student.lum.lo.entity.LoLoRelation;

 import org.kuali.student.lum.lo.entity.LoLoRelationType;

 import org.kuali.student.lum.lo.entity.LoRepository;

 import org.kuali.student.lum.lo.entity.LoType;

 import org.kuali.student.lum.lo.service.LearningObjectiveService;

 import org.springframework.transaction.annotation.Transactional;

 /*n

  * @author Kuali Student team

  *

  */

 @WebService(endpointInterface = "org.kuali.student.lum.lo.service.LearningObjectiveService", serviceName = "LearningObjectiveService", portName = "LearningObjectiveService", targetNamespace = "http://student.kuali.org/wsdl/lo")

 @Transactional(readOnly=true,noRollbackFor={DoesNotExistException.class},rollbackFor={Throwable.class})

 public class LearningObjectiveServiceImpl implements LearningObjectiveService {

     private LoDao loDao;

         private SearchManager searchManager;

     private DictionaryService dictionaryServiceDelegate;

         private ValidatorFactory validatorFactory;

         public LoDao getLoDao() {

         return loDao;

     }

     public void setLoDao(LoDao dao) {

         this.loDao = dao;

     }

         public void setSearchManager(SearchManager searchManager) {

                 this.searchManager = searchManager;

         }

     public void setDictionaryServiceDelegate(DictionaryService dictionaryServiceDelegate) {

         this.dictionaryServiceDelegate = dictionaryServiceDelegate;

     }

         public ValidatorFactory getValidatorFactory() {

         return validatorFactory;

     }

     public void setValidatorFactory(ValidatorFactory validatorFactory) {

         this.validatorFactory = validatorFactory;

     }

     /*

      * (non-Javadoc)

      * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoRepositories()

      */

         @Override

         public List<LoRepositoryInfo> getLoRepositories()

                         throws OperationFailedException {

             List<LoRepository> repositories = loDao.find(LoRepository.class);

                 return LearningObjectiveServiceAssembler.toLoRepositoryInfos(repositories);

         }

         /*

          * (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoRepository(java.lang.String)

          */

         @Override

         public LoRepositoryInfo getLoRepository(String loRepositoryKey)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loRepositoryKey, "loRepositoryKey");

                 return LearningObjectiveServiceAssembler.toLoRepositoryInfo(loDao.fetch(LoRepository.class, loRepositoryKey));

         }

         /*

          * (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoTypes()

          */

         @Override

         public List<LoTypeInfo> getLoTypes() throws OperationFailedException {

             List<LoType> find = loDao.find(LoType.class);

                 return LearningObjectiveServiceAssembler.toLoTypeInfos(find);

         }

         /*

          * (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoType(java.lang.String)

          */

         @Override

         public LoTypeInfo getLoType(String loTypeKey) throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException {

             checkForMissingParameter(loTypeKey, "loTypeKey");

             LoType fetch = loDao.fetch(LoType.class, loTypeKey);

                 return LearningObjectiveServiceAssembler.toLoTypeInfo(fetch);

         }

         /*

          * (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoLoRelationTypes()

          */

         @Override

         public List<LoLoRelationTypeInfo> getLoLoRelationTypes()

                         throws OperationFailedException {

             List<LoLoRelationType> fetch = loDao.find(LoLoRelationType.class);

                 return LearningObjectiveServiceAssembler.toLoLoRelationTypeInfos(fetch);

         }

         /*

          * (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoLoRelationType(java.lang.String)

          */

         @Override

         public LoLoRelationTypeInfo getLoLoRelationType(String loLoRelationTypeKey)

                         throws OperationFailedException, MissingParameterException, DoesNotExistException {

             checkForMissingParameter(loLoRelationTypeKey, "loLoRelationTypeKey");

                 return LearningObjectiveServiceAssembler.toLoLoRelationTypeInfo(loDao.fetch(LoLoRelationType.class, loLoRelationTypeKey));

         }

         @Override

         public List<String> getAllowedLoLoRelationTypesForLoType(String loTypeKey, String relatedLoTypeKey)

                         throws DoesNotExistException, InvalidParameterException,

                                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loTypeKey, "loTypeKey");

             checkForMissingParameter(relatedLoTypeKey, "relatedLoTypeKey");

             return loDao.getAllowedLoLoRelationTypesForLoType(loTypeKey, relatedLoTypeKey);

         }

     /*

          * (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#addLoCategoryToLo(java.lang.String, java.lang.String)

          */

         @Override

         @Transactional(readOnly=false)

         public StatusInfo addLoCategoryToLo(String loCategoryId, String loId)

                         throws AlreadyExistsException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException,

                         UnsupportedActionException {

             checkForMissingParameter(loCategoryId, "loCategoryId");

             checkForMissingParameter(loId, "loId");

         StatusInfo statusInfo = new StatusInfo();

         statusInfo.setSuccess(loDao.addLoCategoryToLo(loCategoryId, loId));

         return statusInfo;

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#createLo(java.lang.String, java.lang.String, org.kuali.student.lum.lo.dto.LoInfo)

          */

         @Override

         @Transactional(readOnly=false)

         public LoInfo createLo(String repositoryId, String loType, LoInfo loInfo)

                         throws DataValidationErrorException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException {

             checkForMissingParameter(repositoryId, "repositoryId");

             checkForMissingParameter(loType, "loType");

             checkForMissingParameter(loInfo, "loInfo");

                 // Validate LO

                 List<ValidationResultInfo> val = validateLo("SYSTEM", loInfo);

                 if(null != val && val.size() > 0) {

                         for (ValidationResultInfo result : val) {

                                 System.err.println("Validation error. Element: " + result.getElement() + ",  Value: " + result.getMessage());

                         }

                         throw new DataValidationErrorException("Validation error!");

                 }

             // make sure LoType and LoRepository exist before trying to create

             // if checkForMissingParameter above did its job, we don't have to null-check these id's

             LoType type = null;

             LoRepository repository = null;

             try {

                     type = loDao.fetch(LoType.class, loType);

                     repository = loDao.fetch(LoRepository.class, repositoryId); 

             } catch (DoesNotExistException dnee) {

                     throw new DoesNotExistException("Specified " + (null == type ? "LoType" : "LoRepository") + " does not exist", dnee);

             }

             loInfo.setLoRepositoryKey(repositoryId);

             loInfo.setType(loType);

             Lo lo = null;

             try {

                     lo = LearningObjectiveServiceAssembler.toLo(false, loInfo, loDao);

             } catch (VersionMismatchException vme) {

                     // should never happen in a create call, but

                     throw new OperationFailedException("VersionMismatchException caught during Learning Objective creation");

             }

             lo.setLoType(type);

             lo.setLoRepository(repository);

             loDao.create(lo);

                 return LearningObjectiveServiceAssembler.toLoInfo(lo);

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#deleteLo(java.lang.String)

          */

         @Override

         @Transactional(readOnly=false)

         public StatusInfo deleteLo(String loId)

                         throws DependentObjectsExistException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException {

             checkForMissingParameter(loId, "loId");

             StatusInfo returnStatus = new StatusInfo();

             returnStatus.setSuccess(loDao.deleteLo(loId));

                 return returnStatus;

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#deleteLoCategory(java.lang.String)

          */

         @Override

         @Transactional(readOnly=false)

         public StatusInfo deleteLoCategory(String loCategoryId)

                         throws DependentObjectsExistException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException {

             checkForMissingParameter(loCategoryId, "loCategoryId");

             loDao.deleteLoCategory(loCategoryId);

                 return new StatusInfo();

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLo(java.lang.String)

          */

         @Override

         public LoInfo getLo(String loId) throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException {

             checkForMissingParameter(loId, "loId");

                 return LearningObjectiveServiceAssembler.toLoInfo(loDao.fetch(Lo.class, loId));

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoByIdList(java.util.List)

          */

         @Override

         public List<LoInfo> getLoByIdList(List<String> loIds)

                         throws InvalidParameterException, MissingParameterException,

                         OperationFailedException {

             checkForMissingParameter(loIds, "loId");

             checkForEmptyList(loIds, "loId");

             List<Lo> los = loDao.getLoByIdList(loIds);

                 return LearningObjectiveServiceAssembler.toLoInfos(los);

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoCategories(java.lang.String)

          */

         @Override

         public List<LoCategoryInfo> getLoCategories(String loRepositoryKey)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loRepositoryKey, "loRepositoryKey");

             List<LoCategory> categories = loDao.getLoCategories(loRepositoryKey);

         return LearningObjectiveServiceAssembler.toLoCategoryInfos(categories);

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoCategoriesForLo(java.lang.String)

          */

         @Override

         public List<LoCategoryInfo> getLoCategoriesForLo(String loId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loId, "loId");

             List<LoCategory> categories = loDao.getLoCategoriesForLo(loId);

                 return LearningObjectiveServiceAssembler.toLoCategoryInfos(categories);

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoCategory(java.lang.String)

          */

         @Override

         public LoCategoryInfo getLoCategory(String loCategoryId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loCategoryId, "loCategoryId");

                 return LearningObjectiveServiceAssembler.toLoCategoryInfo(loDao.fetch(LoCategory.class, loCategoryId));

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLoParents(java.lang.String)

         public List<LoInfo> getLoParents(String loId) throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException {

             checkForMissingParameter(loId, "loId");

             List<Lo> loParents = loDao.getLoParents(loId);

                 return LearningObjectiveServiceAssembler.toLoInfos(loParents);

         }

          */

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#getLosByLoCategory(java.lang.String)

          */

         @Override

         public List<LoInfo> getLosByLoCategory(String loCategoryId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loCategoryId, "loCategoryId");

             List<Lo> los = loDao.getLosByLoCategory(loCategoryId);

                 return LearningObjectiveServiceAssembler.toLoInfos(los);

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#isDescendant(java.lang.String, java.lang.String)

         @Override

         public Boolean isDescendant(String loId, String descendantLoId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loId, "loId");

             checkForMissingParameter(descendantLoId, "descendantLoId");

                 return loDao.isDescendant(loId, descendantLoId);

         }

          */

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#isEquivalent(java.lang.String, java.lang.String)

         @Override

         public Boolean isEquivalent(String loId, String equivalentLoId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loId, "loId");

             checkForMissingParameter(equivalentLoId, "equivalentLoId");

                 return loDao.isEquivalent(loId, equivalentLoId);

         }

          */

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#removeChildLoFromLo(java.lang.String, java.lang.String)

         @Override

         @Transactional(readOnly=false)

         public StatusInfo removeChildLoFromLo(String loId, String parentLoId)

                         throws DependentObjectsExistException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException {

             checkForMissingParameter(loId, "loId");

             checkForMissingParameter(parentLoId, "parentLoId");

             StatusInfo statusInfo = new StatusInfo();

             statusInfo.setSuccess(loDao.removeChildLoFromLo(loId, parentLoId));

                 return statusInfo;

         }

          */

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#removeEquivalentLoFromLo(java.lang.String, java.lang.String)

         @Override

         @Transactional(readOnly=false)

         public StatusInfo removeEquivalentLoFromLo(String loId,

                         String equivalentLoId) throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException {

             checkForMissingParameter(loId, "loId");

             checkForMissingParameter(equivalentLoId, "equivalentLoId");

         StatusInfo statusInfo = new StatusInfo();

         statusInfo.setSuccess(loDao.removeEquivalentLoFromLo(loId, equivalentLoId));

         return statusInfo;

         }

          */

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#removeLoCategoryFromLo(java.lang.String, java.lang.String)

          */

         @Override

         @Transactional(readOnly=false)

         public StatusInfo removeLoCategoryFromLo(String loCategoryId, String loId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException,

                         PermissionDeniedException, UnsupportedActionException {

             checkForMissingParameter(loCategoryId, "loCategoryId");

             checkForMissingParameter(loId, "loId");

         StatusInfo statusInfo = new StatusInfo();

         statusInfo.setSuccess(loDao.removeLoCategoryFromLo(loCategoryId, loId));

         return statusInfo;

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#updateLo(java.lang.String, org.kuali.student.lum.lo.dto.LoInfo)

          */

         @Override

         @Transactional(readOnly=false)

         public LoInfo updateLo(String loId, LoInfo loInfo)

                         throws DataValidationErrorException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException,

                         VersionMismatchException {

             checkForMissingParameter(loId, "loId");

             checkForMissingParameter(loInfo, "loInfo");

                 // Validate LO

                 List<ValidationResultInfo> val = validateLo("SYSTEM", loInfo);

                 if(null != val && val.size() > 0) {

                         for (ValidationResultInfo result : val) {

                                 System.err.println("Validation error. Element: " + result.getElement() + ",  Value: " + result.getMessage());

                         }

                         throw new DataValidationErrorException("Validation error!");

                 }

             Lo lo = loDao.fetch(Lo.class, loId);

         if (!String.valueOf(lo.getVersionNumber()).equals(loInfo.getMetaInfo().getVersionInd())){

             throw new VersionMismatchException("LO to be updated is not the current version");

         }

         lo = LearningObjectiveServiceAssembler.toLo(true, lo, loInfo, loDao);

         loDao.update(lo);

         return LearningObjectiveServiceAssembler.toLoInfo(lo);

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#updateLoCategory(java.lang.String, org.kuali.student.lum.lo.dto.LoCategoryInfo)

          */

         @Override

         @Transactional(readOnly=false)

         public LoCategoryInfo updateLoCategory(String loCategoryId,

                         LoCategoryInfo loCategoryInfo) throws DataValidationErrorException,

                         DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException,

                         PermissionDeniedException, VersionMismatchException {

             checkForMissingParameter(loCategoryId, "loCategoryId");

             checkForMissingParameter(loCategoryInfo, "loCategoryInfo");

                 // Validate LoCategory

                 List<ValidationResultInfo> val = validateLoCategory("SYSTEM", loCategoryInfo);

                 //kslum-136 - don't allow dups w/ same name (case insensitive), type, state & repository

         if (doesLoCategoryExist(loCategoryInfo.getLoRepository(), loCategoryInfo, loCategoryId)) {

             ValidationResultInfo vr = new ValidationResultInfo();

             vr.setElement("LO Category Name");

             vr.setError("LO Category already exists");

             val.add(vr);

         }

         if(null != val && val.size() > 0) {

             for (ValidationResultInfo result : val) {

                 System.err.println("Validation error. Element: " + result.getElement() + ",  Value: " + result.getMessage());

             }

             throw new DataValidationErrorException("Validation error!", val);

         }

             LoCategory loCategory = loDao.fetch(LoCategory.class, loCategoryId);

         if (!String.valueOf(loCategory.getVersionNumber()).equals(loCategoryInfo.getMetaInfo().getVersionInd())){

             throw new VersionMismatchException("LoCategory to be updated is not the current version");

         }

         // if state is changing from "active"

         if (loCategory.getState().equals("active") && ( ! loCategoryInfo.getState().equals("active") )) {

                     // N.B. - ability to 'retire' LoCategory's that are still associated w/ active

                     // LO's is configured and enforced on the client

                 List<LoInfo> loInfos = getLosByLoCategory(loCategoryId);

                     if (null != loInfos) {

                                 // remove associations of this LoCategory from active LO's

                             for (LoInfo info : loInfos) {

                                     if (info.getState().equals("active"))  {

                                             try {

                                                         removeLoCategoryFromLo(loCategoryId, info.getId());

                                                 } catch (UnsupportedActionException uaee) {

                                                     throw new OperationFailedException("Unable to update LoCategory: could not remove association with active LearningObjective", uaee);

                                                 }

                                     }

                             }

                     }

         }

         // if type is changing

         if ( ! loCategory.getLoCategoryType().getId().equals(loCategoryInfo.getType()) ) {

                 loCategory = cloneLoCategory(loCategory, loCategoryInfo);

         } else {

                 loCategory = LearningObjectiveServiceAssembler.toLoCategory(loCategory, loCategoryInfo, loDao);

                 loDao.update(loCategory);

         }

         return LearningObjectiveServiceAssembler.toLoCategoryInfo(loCategory);

         }

     // inactivate current LoCategory & clone it w/ its relationships,

         // used when changing immutable type of LoCategory

         // https://test.kuali.org/confluence/display/KULSTG/DS+-+LO+Centrally+Maintain+Categories

         private LoCategory cloneLoCategory(LoCategory loCategory, LoCategoryInfo loCategoryInfo) throws DoesNotExistException, InvalidParameterException, OperationFailedException {

             LoCategoryType catType = null;

             try {

                 catType = loDao.fetch(LoCategoryType.class, loCategoryInfo.getType());

             } catch (DoesNotExistException dnee) {

                     throw new DoesNotExistException("Attempt to set LoCategory's type to nonexistent LoCategoryType", dnee);

             }

             // clone the existing LO

             LoCategoryInfo newLoCategoryInfo = LearningObjectiveServiceAssembler.toLoCategoryInfo(loCategory);

             newLoCategoryInfo.setType(catType.getId());

             newLoCategoryInfo.setName(loCategoryInfo.getName());

             LoCategory newLoCategory = loDao.create(LearningObjectiveServiceAssembler.toLoCategory(newLoCategoryInfo, loDao));

             // clone Lo-LoCategory relations

             List<Lo> catsLos = loDao.getLosByLoCategory(loCategory.getId());                 

             for (Lo lo : catsLos) {

                     try {

                             // create the new one

                                 loDao.addLoCategoryToLo(newLoCategory.getId(), lo.getId());

                                 // remove the old one

                                 loDao.removeLoCategoryFromLo(loCategory.getId(), lo.getId());

                         } catch (UnsupportedActionException uae) {

                                 throw new OperationFailedException(uae.getMessage(), uae);

                         }

             }

             // inactivate old LoCategory

             loCategory.setState("inactive");

             loDao.update(loCategory);

             return newLoCategory;

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#validateLo(java.lang.String, org.kuali.student.lum.lo.dto.LoInfo)

          */

         @Override

         public List<ValidationResultInfo> validateLo(String validationType,

                         LoInfo loInfo) throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException {

             checkForMissingParameter(validationType, "validationType");

             checkForMissingParameter(loInfo, "loInfo");

             try{

                     String loDesc = loInfo.getDesc().getPlain(); 

                     checkForEmptyString(loDesc, "loInfo.Desc");

             } catch (NullPointerException e){

                         //do not checkForEmptyString

                 }

             ObjectStructureDefinition objStructure = this.getObjectStructure(LoInfo.class.getName());

             Validator validator = validatorFactory.getValidator();

             return validator.validateObject(loInfo, objStructure);

         }

         /* (non-Javadoc)

          * @see org.kuali.student.lum.lo.service.LearningObjectiveService#validateLoCategory(java.lang.String, org.kuali.student.lum.lo.dto.LoCategoryInfo)

          */

         @Override

         public List<ValidationResultInfo> validateLoCategory(String validationType,

                         LoCategoryInfo loCategoryInfo) throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException {

             checkForMissingParameter(validationType, "validationType");

             checkForMissingParameter(loCategoryInfo, "loCategoryInfo");

             try{

                     String catDesc = loCategoryInfo.getDesc().getPlain(); 

                     checkForEmptyString(catDesc, "loCategoryInfo.Desc");

             } catch (NullPointerException e){

                         //do not checkForEmptyString

                 }

         ObjectStructureDefinition objStructure = this.getObjectStructure(LoCategoryInfo.class.getName());

         Validator validator = validatorFactory.getValidator();

         return validator.validateObject(loCategoryInfo, objStructure);

         }

         @Override

         public List<ValidationResultInfo> validateLoLoRelation(

                         String validationType, LoLoRelationInfo loLoRelationInfo)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

         ObjectStructureDefinition objStructure = this.getObjectStructure(LoLoRelationInfo.class.getName());

         Validator validator = validatorFactory.getValidator();

         return validator.validateObject(loLoRelationInfo, objStructure);

         }

     /**

      * Check for missing parameter and throw localized exception if missing

      *

      * @param param

      * @param parameter name

      * @throws MissingParameterException

      */

     private void checkForMissingParameter(Object param, String paramName)

             throws MissingParameterException {

         if (param == null) {

             throw new MissingParameterException(paramName + " can not be null");

         }

     }

     /**

      * @param param

      * @param paramName

      * @throws MissingParameterException

      */

     private void checkForEmptyList(Object param, String paramName)

             throws MissingParameterException {

         if (param != null && param instanceof List && ((List<?>)param).size() == 0) {

             throw new MissingParameterException(paramName + " can not be an empty list");

         }

     }

     /**

      * @param param

      * @param paramName

      * @throws MissingParameterException

      */

     private void checkForEmptyString(String param, String paramName)

             throws MissingParameterException {

         if (param != null && "".equals(param.trim())) {

             throw new MissingParameterException(paramName + " can not be empty");

         }

     }

     /**

      * @param loRepositoryKey

      * @param loCategoryInfo

      * @param loCategoryId

      * @throws MissingParameterException,OperationFailedException

      */

     private boolean doesLoCategoryExist(String loRepositoryKey, LoCategoryInfo loCategoryInfo, String loCategoryId)

             throws MissingParameterException, DataValidationErrorException {

         boolean exists = false;

             SearchRequest request = new SearchRequest();

             request.setSearchKey("lo.search.loCategoriesByNameRepoTypeState");

                  List<SearchParam> searchParams = new ArrayList<SearchParam>();

                 SearchParam qpv1 = new SearchParam();

                 qpv1.setKey("lo.queryParam.loCategoryName");

                 qpv1.setValue(loCategoryInfo.getName().toLowerCase());

                 searchParams.add(qpv1);

                 SearchParam qpv2 = new SearchParam();

                 qpv2.setKey("lo.queryParam.loCategoryRepo");

                 qpv2.setValue(loRepositoryKey);

                 searchParams.add(qpv2);

                 SearchParam qpv3 = new SearchParam();

                 qpv3.setKey("lo.queryParam.loCategoryType");

                 qpv3.setValue(loCategoryInfo.getType());

                 searchParams.add(qpv3);

                 SearchParam qpv4 = new SearchParam();

                 qpv4.setKey("lo.queryParam.loCategoryState");

                 qpv4.setValue(loCategoryInfo.getState());

                 searchParams.add(qpv4);

                 request.setParams(searchParams);

                 SearchResult result = search(request);

                 if(loCategoryId != null && !loCategoryId.trim().equals("")){

                         if (result.getRows().size() > 0) {

                                 for(SearchResultRow srrow : result.getRows()){

                                         List<SearchResultCell> srCells = srrow.getCells();

                                         if(srCells != null && srCells.size() > 0){

                                                 for(SearchResultCell srcell : srCells){

                                                         if(!srcell.getValue().equals(loCategoryId)) {

                                 exists = true;

                             }

                                                 }

                                         }

                                 }

                         }

                 }

                 else{

                         if (result.getRows().size() > 0) {

                 exists = true;

                         }

                 }

         return exists;

     }

     @Override

     public ObjectStructureDefinition getObjectStructure(String objectTypeKey) {

         return dictionaryServiceDelegate.getObjectStructure(objectTypeKey);

     }

     @Override

     public List<String> getObjectTypes() {

         return dictionaryServiceDelegate.getObjectTypes();

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchCriteriaType(java.lang.String)

          */

     @Override

     public SearchCriteriaTypeInfo getSearchCriteriaType(

             String searchCriteriaTypeKey) throws DoesNotExistException,

             InvalidParameterException, MissingParameterException,

             OperationFailedException {

         return searchManager.getSearchCriteriaType(searchCriteriaTypeKey);

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchCriteriaTypes()

          */

     @Override

     public List<SearchCriteriaTypeInfo> getSearchCriteriaTypes()

     throws OperationFailedException {

         return searchManager.getSearchCriteriaTypes();

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchResultType(java.lang.String)

          */

     @Override

     public SearchResultTypeInfo getSearchResultType(String searchResultTypeKey)

     throws DoesNotExistException, InvalidParameterException,

     MissingParameterException, OperationFailedException {

         checkForMissingParameter(searchResultTypeKey, "searchResultTypeKey");

         return searchManager.getSearchResultType(searchResultTypeKey);

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchResultTypes()

          */

     @Override

     public List<SearchResultTypeInfo> getSearchResultTypes()

     throws OperationFailedException {

         return searchManager.getSearchResultTypes();

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchType(java.lang.String)

          */

     @Override

     public SearchTypeInfo getSearchType(String searchTypeKey)

     throws DoesNotExistException, InvalidParameterException,

     MissingParameterException, OperationFailedException {

         checkForMissingParameter(searchTypeKey, "searchTypeKey");

         return searchManager.getSearchType(searchTypeKey);

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchTypes()

          */

     @Override

     public List<SearchTypeInfo> getSearchTypes()

     throws OperationFailedException {

         return searchManager.getSearchTypes();

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchTypesByCriteria(java.lang.String)

          */

     @Override

     public List<SearchTypeInfo> getSearchTypesByCriteria(

             String searchCriteriaTypeKey) throws DoesNotExistException,

             InvalidParameterException, MissingParameterException,

             OperationFailedException {

         checkForMissingParameter(searchCriteriaTypeKey, "searchCriteriaTypeKey");

         return searchManager.getSearchTypesByCriteria(searchCriteriaTypeKey);

     }

         /* (non-Javadoc)

          * @see org.kuali.student.core.search.service.SearchService#getSearchTypesByResult(java.lang.String)

          */

     @Override

     public List<SearchTypeInfo> getSearchTypesByResult(

             String searchResultTypeKey) throws DoesNotExistException,

             InvalidParameterException, MissingParameterException,

             OperationFailedException {

         checkForMissingParameter(searchResultTypeKey, "searchResultTypeKey");

         return searchManager.getSearchTypesByResult(searchResultTypeKey);

     }

         @Override

         @Transactional(readOnly=false)

         public LoLoRelationInfo createLoLoRelation(String loId, String relatedLoId,

                         String loLoRelationType, LoLoRelationInfo loLoRelationInfo)

                         throws AlreadyExistsException, 

                         DataValidationErrorException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException {

             checkForMissingParameter(loId, "loId");

             checkForMissingParameter(relatedLoId, "relatedLoId");

             checkForMissingParameter(loLoRelationType, "loLoRelationType");

             checkForMissingParameter(loLoRelationInfo, "loLoRelationInfo");

                 // Validate LoLoRelation

                 List<ValidationResultInfo> val = validateLoLoRelation("SYSTEM", loLoRelationInfo);

                 if(null != val && val.size() > 0) {

                         for (ValidationResultInfo result : val) {

                                 System.err.println("Validation error. Element: " + result.getElement() + ",  Value: " + result.getMessage());

                         }

                         throw new DataValidationErrorException("Validation error!");

                 }

             if (null == loLoRelationInfo.getState()) {

                     loLoRelationInfo.setState("draft"); // TODO - enum of allowed states? retrieve allowed states from dictionary?

             }

             Lo lo = loDao.fetch(Lo.class, loId);

             Lo relatedLo = loDao.fetch(Lo.class, relatedLoId);

             LoLoRelationType type = loDao.fetch(LoLoRelationType.class, loLoRelationType);

             loLoRelationInfo.setLoId(loId);

             loLoRelationInfo.setRelatedLoId(relatedLoId);

             loLoRelationInfo.setType(loLoRelationType);

             LoLoRelation relation = null;

             try {

                     relation = LearningObjectiveServiceAssembler.toLoLoRelation(false, loLoRelationInfo, loDao);

             } catch (VersionMismatchException vme) {

                     // should never happen in a create call, but

                     throw new OperationFailedException("VersionMismatchException caught during LoLoRelation creation");

             }

             relation.setLo(lo);

             relation.setRelatedLo(relatedLo);

             relation.setLoLoRelationType(type);

             relation = loDao.create(relation);

                 return LearningObjectiveServiceAssembler.toLoLoRelationInfo(relation);

         }

         @Override

         @Transactional(readOnly=false)

         public StatusInfo deleteLoLoRelation(String loLoRelationId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException,

                         PermissionDeniedException {

             checkForMissingParameter(loLoRelationId, "loLoRelationId");

             loDao.deleteLoLoRelation(loLoRelationId);

                 return new StatusInfo();

         }

         @Override

         public LoLoRelationInfo getLoLoRelation(String loLoRelationId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loLoRelationId, "loLoRelationId");

                 return LearningObjectiveServiceAssembler.toLoLoRelationInfo(loDao.fetch(LoLoRelation.class, loLoRelationId));

         }

         @Override

         public List<LoLoRelationInfo> getLoLoRelationsByLoId(String loId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

                 List<LoLoRelation> llRelations = loDao.getLoLoRelationsByLoId(loId);

                 return LearningObjectiveServiceAssembler.toLoLoRelationInfos(llRelations);

         }

         @Override

         public List<LoInfo> getLosByRelatedLoId(String relatedLoId,

                         String loLoRelationType) throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException {

                 List<Lo> relatedLos = loDao.getLosByRelatedLoId(relatedLoId, loLoRelationType);

                 return LearningObjectiveServiceAssembler.toLoInfos(relatedLos);

         }

         @Override

         public List<LoInfo> getRelatedLosByLoId(String loId, String loLoRelationTypeKey)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loId, "loId");

             checkForMissingParameter(loLoRelationTypeKey, "loLoRelationTypeKey");

             List<Lo> relatedLos = loDao.getRelatedLosByLoId(loId, loLoRelationTypeKey);

                 return LearningObjectiveServiceAssembler.toLoInfos(relatedLos);

         }

         @Override

         @Transactional(readOnly=false)

         public LoLoRelationInfo updateLoLoRelation(String loLoRelationId,

                         LoLoRelationInfo loLoRelationInfo)

                         throws DataValidationErrorException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException,

                         VersionMismatchException {

                 // TODO - this is never called; why does it exist?

                 /*

                 // Validate LoLoRelation

                 List<ValidationResultInfo> val = validateLoLoRelation("SYSTEM", loLoRelationInfo);

                 if(null != val && val.size() > 0) {

                         throw new DataValidationErrorException("Validation error!");

                 }

                 */

                 return null;

         }

         @Override

         @Transactional(readOnly=false)

         public LoCategoryInfo createLoCategory(String loRepositoryKey,

                         String loCategoryTypeKey, LoCategoryInfo loCategoryInfo)

                         throws DataValidationErrorException, DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException, PermissionDeniedException {

             checkForMissingParameter(loRepositoryKey, "loRepositoryKey");

             checkForMissingParameter(loCategoryTypeKey, "loCategoryTypeKey");

             checkForMissingParameter(loCategoryInfo, "loCategoryInfo");

                 // Validate LoCategory

                 List<ValidationResultInfo> val = validateLoCategory("SYSTEM", loCategoryInfo);

         //kslum-136 - don't allow dups w/ same name (case insensitive), type, state & repository       

         if (doesLoCategoryExist(loRepositoryKey, loCategoryInfo, null)) {

             ValidationResultInfo vr = new ValidationResultInfo();

             vr.setElement("LO Category Name");

             vr.setError("LO Category already exists");

             val.add(vr);

         }

         if(null != val && val.size() > 0) {

                         for (ValidationResultInfo result : val) {

                                 System.err.println("Validation error. Element: " + result.getElement() + ",  Value: " + result.getMessage());

                         }

                         throw new DataValidationErrorException("Validation error!", val);

                 }

             LoCategory category = LearningObjectiveServiceAssembler.toLoCategory(loCategoryInfo, loDao);

             LoCategoryType loCatType = loDao.fetch(LoCategoryType.class, loCategoryTypeKey);

             category.setLoCategoryType(loCatType);

             LoRepository loRepository = loDao.fetch(LoRepository.class, loRepositoryKey);

             category.setLoRepository(loRepository);

             loDao.create(category);

                 return LearningObjectiveServiceAssembler.toLoCategoryInfo(category);

         }

         @Override

         public LoCategoryTypeInfo getLoCategoryType(String loCategoryTypeKey)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

             checkForMissingParameter(loCategoryTypeKey, "loCategoryTypeKey");

             LoCategoryType loCatType = loDao.fetch(LoCategoryType.class, loCategoryTypeKey);

             return LearningObjectiveServiceAssembler.toLoCategoryTypeInfo(loCatType);

         }

         @Override

         public List<LoCategoryTypeInfo> getLoCategoryTypes()

                         throws OperationFailedException {

                 List<LoCategoryType> categoryTypes = loDao.find(LoCategoryType.class);

                 return LearningObjectiveServiceAssembler.toLoCategoryTypeInfos(categoryTypes);

         }

         @Override

         public List<LoInfo> getLosByRepository(String loRepositoryKey,

                         String loTypeKey, String loStateKey)

                         throws InvalidParameterException, MissingParameterException,

                         OperationFailedException {

             checkForMissingParameter(loRepositoryKey, "loRepositoryKey");

             List<Lo> los = loDao.getLosByRepository(loRepositoryKey);

                 return LearningObjectiveServiceAssembler.toLoInfos(los);

         }

         @Override

         public SearchResult search(SearchRequest searchRequest) throws MissingParameterException {

         checkForMissingParameter(searchRequest, "searchRequest");

         return searchManager.search(searchRequest, loDao);

         }

 }