/**

  * 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.core.statement.service.impl;

 import java.util.ArrayList;

 import java.util.HashMap;

 import java.util.HashSet;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 import javax.jws.WebService;

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

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

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

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

 import org.kuali.student.common.exceptions.CircularReferenceException;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

 import org.kuali.student.core.statement.dao.StatementDao;

 import org.kuali.student.core.statement.dto.NlUsageTypeInfo;

 import org.kuali.student.core.statement.dto.RefStatementRelationInfo;

 import org.kuali.student.core.statement.dto.RefStatementRelationTypeInfo;

 import org.kuali.student.core.statement.dto.ReqComponentInfo;

 import org.kuali.student.core.statement.dto.ReqComponentTypeInfo;

 import org.kuali.student.core.statement.dto.StatementInfo;

 import org.kuali.student.core.statement.dto.StatementTreeViewInfo;

 import org.kuali.student.core.statement.dto.StatementTypeInfo;

 import org.kuali.student.core.statement.entity.NlUsageType;

 import org.kuali.student.core.statement.entity.ObjectType;

 import org.kuali.student.core.statement.entity.RefStatementRelation;

 import org.kuali.student.core.statement.entity.RefStatementRelationAttribute;

 import org.kuali.student.core.statement.entity.RefStatementRelationType;

 import org.kuali.student.core.statement.entity.ReqComponent;

 import org.kuali.student.core.statement.entity.ReqComponentType;

 import org.kuali.student.core.statement.entity.Statement;

 import org.kuali.student.core.statement.entity.StatementType;

 import org.kuali.student.core.statement.naturallanguage.NaturalLanguageTranslator;

 import org.kuali.student.core.statement.naturallanguage.translators.ReqComponentTranslator;

 import org.kuali.student.core.statement.service.StatementService;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import org.springframework.beans.BeanUtils;

 import org.springframework.transaction.annotation.Transactional;

 @WebService(endpointInterface = "org.kuali.student.core.statement.service.StatementService", serviceName = "StatementService", portName = "StatementService", targetNamespace = "http://student.kuali.org/wsdl/statement")

 public class StatementServiceImpl implements StatementService {

         private final static Logger logger = LoggerFactory.getLogger(ReqComponentTranslator.class);

         private static final String SEARCH_KEY_DEPENDENCY_ANALYSIS = "stmt.search.dependencyAnalysis";

         private StatementDao statementDao;

         private NaturalLanguageTranslator naturalLanguageTranslator;

     private SearchManager searchManager;

     private DictionaryService dictionaryServiceDelegate;

     private StatementAssembler statementAssembler;

     private ValidatorFactory validatorFactory;

     // private StatementTreeViewAssembler statementTreeViewAssembler;

         public void setStatementAssembler(StatementAssembler statementAssembler) {

                 this.statementAssembler = statementAssembler;

         }

         public SearchManager getSearchManager() {

         return searchManager;

     }

     public void setSearchManager(final SearchManager searchManager) {

         this.searchManager = searchManager;

     }

     public DictionaryService getDictionaryServiceDelegate() {

         return dictionaryServiceDelegate;

     }

     public void setDictionaryServiceDelegate(final DictionaryService dictionaryServiceDelegate) {

             this.dictionaryServiceDelegate = dictionaryServiceDelegate;

     }

     public StatementDao getStatementDao() {

         return statementDao;

     }

     public void setStatementDao(final StatementDao statementDao) {

                 this.statementDao = statementDao;

         }

     public NaturalLanguageTranslator getNaturalLanguageTranslator() {

         return naturalLanguageTranslator;

     }

         public void setNaturalLanguageTranslator(final NaturalLanguageTranslator translator) {

                 this.naturalLanguageTranslator = translator;

         }

     @Transactional(readOnly=true)

         public NlUsageTypeInfo getNlUsageType(final String nlUsageTypeKey)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

                 checkForNullOrEmptyParameter(nlUsageTypeKey, "nlUsageTypeKey");

                 checkForEmptyParameter(nlUsageTypeKey, "nlUsageTypeKey");

                 NlUsageType entity = this.statementDao.fetch(NlUsageType.class, nlUsageTypeKey);

                 NlUsageTypeInfo info = StatementAssembler.toNlUsageTypeInfo(entity);

                 return info;

         }

     @Transactional(readOnly=true)

         public List<NlUsageTypeInfo> getNlUsageTypes()

                         throws OperationFailedException {

                 List<NlUsageType> entities = this.statementDao.find(NlUsageType.class);

                 List<NlUsageTypeInfo> infos = StatementAssembler.toNlUsageTypeInfos(entities);

                 return infos;

         }

     @Transactional(readOnly=true)

         public List<String> getRefObjectTypes() throws OperationFailedException {

                 List<ObjectType> objectTypes = this.statementDao.find(ObjectType.class);

                 List<String> ids = new ArrayList<String>();

                 for(ObjectType objectType : objectTypes) {

                         ids.add(objectType.getId());

                 }

                 return ids;

         }

     @Transactional(readOnly=true)

         public List<String> getRefObjectSubTypes(final String objectTypeKey)

                         throws DoesNotExistException,

                         InvalidParameterException, MissingParameterException,

                         OperationFailedException {

                 checkForNullOrEmptyParameter(objectTypeKey, "objectTypeKey");

                 checkForEmptyParameter(objectTypeKey, "objectTypeKey");

                 ObjectType objectType = this.statementDao.fetch(ObjectType.class, objectTypeKey);

                 List<String> ids = StatementAssembler.toRefObjectSubTypeIds(objectType);

                 return ids;

         }

     @Transactional(readOnly=true)

         public RefStatementRelationInfo getRefStatementRelation(final String refStatementRelationId)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

                 checkForNullOrEmptyParameter(refStatementRelationId, "refStatementRelationId");

                 checkForEmptyParameter(refStatementRelationId, "refStatementRelationId");

             RefStatementRelation entity = this.statementDao.fetch(RefStatementRelation.class, refStatementRelationId);

             RefStatementRelationInfo dto = StatementAssembler.toRefStatementRelationInfo(entity);

                 return dto;

         }

     @Transactional(readOnly=true)

         public List<RefStatementRelationInfo> getRefStatementRelationsByRef(final String refObjectTypeKey, final String refObjectId)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForNullOrEmptyParameter(refObjectTypeKey, "refObjectTypeKey");

         checkForEmptyParameter(refObjectId, "refObjectId");

         List<RefStatementRelation> references = this.statementDao.getRefStatementRelations(

                 refObjectTypeKey, refObjectId);

         List<RefStatementRelationInfo> referenceInfos = null;

         if (references != null) {

             for (RefStatementRelation reference : references) {

                 RefStatementRelationInfo dto = StatementAssembler.toRefStatementRelationInfo(reference);

                 referenceInfos = (referenceInfos == null)? new ArrayList<RefStatementRelationInfo>(7) : referenceInfos;

                 referenceInfos.add(dto);

             }

         }

         return referenceInfos;

         }

     @Transactional(readOnly=true)

         public List<RefStatementRelationInfo> getRefStatementRelationsByStatement(final String statementId)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

                 checkForNullOrEmptyParameter(statementId, "statementId");

                 Statement statement = this.statementDao.fetch(Statement.class, statementId);

                 List<RefStatementRelation> entities = statement.getRefStatementRelations();

                 List<RefStatementRelationInfo> dtoList = StatementAssembler.toRefStatementRelationInfos(entities);

                 return dtoList;

         }

         /**

          * <p>Translates and retrieves a requirement component for a specific

          * usuage type (context) into natural language.</p>

          *

          * <p>If <code>language</code> is null default language is used.</p>

          *

          * @param reqComponentId Requirement component to translate

          * @param nlUsageTypeKey Natural language usage type key (context)

          * @param language Translation language

      * @throws DoesNotExistException ReqComponent not found

      * @throws InvalidParameterException Invalid nlUsageTypeKey

      * @throws MissingParameterException Missing reqComponentId or nlUsageTypeKey

      * @throws OperationFailedException Unable to complete request

      * @throws VersionMismatchException The action was attempted on an out of date version.

          */

     @Transactional(readOnly=true)

         public String getNaturalLanguageForReqComponent(final String reqComponentId, final String nlUsageTypeKey, final String language)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

                 checkForNullOrEmptyParameter(reqComponentId, "reqComponentId");

                 checkForNullOrEmptyParameter(nlUsageTypeKey, "nlUsageTypeKey");

                 checkForEmptyParameter(language, "language");

                 // test usage type key exists

                 getNlUsageType(nlUsageTypeKey);

                 ReqComponent reqComponent = this.statementDao.fetch(ReqComponent.class, reqComponentId);

                 String nl = this.naturalLanguageTranslator.translateReqComponent(reqComponent, nlUsageTypeKey, language);

                 if(logger.isInfoEnabled()) {

                         logger.info("reqComponentId="+reqComponentId);

                         logger.info("nlUsageTypeKey="+nlUsageTypeKey);

                         logger.info("language="+language);

                         logger.info("ReqComponent translation="+nl);

                 }

                 return nl;

         }

         /**

          * <p>Translates and retrieves a statement directly attached to a CLU

          * for a specific usuage type (context) into natural language.

          *

          * If <code>cluId</code> is null or empty then statement header is not

          * generated</p>

          *

          * <p>If <code>language</code> is null default language is used.</p>

          *

          * <p>An <code>StatementInfo</code> can either have a list of

          * <code>StatementInfo</code>s as children or a list of

          * <code>ReqComponentInfo</code>s but not both. This means that all leaf

          * nodes must be <code>ReqComponentInfo</code>s.</p>

          *

          * @param statementId Statement to translate

          * @param nlUsageTypeKey Natural language usage type key (context)

          * @param language Translation language

      * @throws DoesNotExistException Statement not found or Clu anchor not found in statement

      * @throws InvalidParameterException Invalid nlUsageTypeKey

      * @throws MissingParameterException Missing statementId or nlUsageTypeKey

      * @throws OperationFailedException Unable to complete request

      * @throws VersionMismatchException The action was attempted on an out of date version.

          */

     @Transactional(readOnly=true)

         public String getNaturalLanguageForStatement(final String statementId, final String nlUsageTypeKey, final String language)

                         throws DoesNotExistException, InvalidParameterException,

                         MissingParameterException, OperationFailedException {

                 checkForNullOrEmptyParameter(statementId, "statementId");

                 checkForNullOrEmptyParameter(nlUsageTypeKey, "nlUsageTypeKey");

                 checkForEmptyParameter(language, "language");

                 Statement statement = this.statementDao.fetch(Statement.class, statementId);

                 String nl = this.naturalLanguageTranslator.translateStatement(statement, nlUsageTypeKey, language);

                 if(logger.isInfoEnabled()) {

                         logger.info("statementId="+statementId);

                         logger.info("nlUsageTypeKey="+nlUsageTypeKey);

                         logger.info("language="+language);

                         logger.info("Statement translation="+nl);

                 }

                 return nl;

         }

     @Transactional(readOnly=true)

     public String getNaturalLanguageForRefStatementRelation(final String refStatementRelationId, final String nlUsageTypeKey, final String language) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

                 checkForNullOrEmptyParameter(refStatementRelationId, "refStatementRelationId");

                 checkForNullOrEmptyParameter(nlUsageTypeKey, "nlUsageTypeKey");

                 checkForEmptyParameter(language, "language");

                 RefStatementRelation refStatementRelation = this.statementDao.fetch(RefStatementRelation.class, refStatementRelationId);

                 Statement statement = refStatementRelation.getStatement();

                 String nl = this.naturalLanguageTranslator.translateStatement(statement, nlUsageTypeKey, language);

                 if(logger.isInfoEnabled()) {

                         logger.info("refStatementRelationId="+refStatementRelationId);

                         logger.info("nlUsageTypeKey="+nlUsageTypeKey);

                         logger.info("language="+language);

                         logger.info("Statement translation="+nl);

                 }

                 return nl;

         }

         @Override

     @Transactional(readOnly=true)

         public String translateReqComponentToNL(final ReqComponentInfo reqComponentInfo, final String nlUsageTypeKey, final String language)

                         throws InvalidParameterException, MissingParameterException, OperationFailedException {

                 checkForMissingParameter(reqComponentInfo, "reqComponentInfo");

                 checkForNullOrEmptyParameter(nlUsageTypeKey, "nlUsageTypeKey");

                 checkForEmptyParameter(language, "language");

                 try {

                         // test usage type key exists

                         getNlUsageType(nlUsageTypeKey);

                         ReqComponent req = statementAssembler.toReqComponentRelation(false, reqComponentInfo);

                         String nl = this.naturalLanguageTranslator.translateReqComponent(req, nlUsageTypeKey, language);

                         if(logger.isInfoEnabled()) {

                             logger.info("ReqComponent translation="+nl);

                     }

                         return nl;

                 } catch (DoesNotExistException e) {

                         throw new OperationFailedException("Requirement component translation failed: " + e.getMessage());

                 } catch (VersionMismatchException e) {

                         throw new OperationFailedException("Requirement component translation failed: " + e.getMessage());

                 }

         }

         @Override

     @Transactional(readOnly=true)

         public String translateStatementTreeViewToNL(final StatementTreeViewInfo statementTreeViewInfo, final String nlUsageTypeKey, final String language)

                         throws InvalidParameterException, MissingParameterException, OperationFailedException {

                 checkForMissingParameter(statementTreeViewInfo, "statementTreeViewInfo");

                 checkForNullOrEmptyParameter(nlUsageTypeKey, "nlUsageTypeKey");

                 checkForEmptyParameter(language, "language");

                 try {

                         Statement statement = statementAssembler.toStatement(statementTreeViewInfo);

                         String nl = this.naturalLanguageTranslator.translateStatement(statement, nlUsageTypeKey, language);

                         if(logger.isInfoEnabled()) {

                             logger.info("StatementTreeView translation="+nl);

                     }

                         return nl;

                 } catch (DoesNotExistException e) {

                         throw new OperationFailedException("Statement tree view translation failed: " + e.getMessage());

                 } catch (VersionMismatchException e) {

                         throw new OperationFailedException("Statement tree view translation failed: " + e.getMessage());

                 }

         }

         /**

          * 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");

                 }

         }

         /**

          * Check for missing or empty parameter and

          * throw localized exception if missing or empty

          *

          * @param param

          * @param parameter name

          * @throws MissingParameterException

          */

         private void checkForNullOrEmptyParameter(String param, String paramName)

                         throws MissingParameterException, InvalidParameterException {

                 if (param == null) {

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

                 } else if (param.trim().isEmpty()) {

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

                 }

         }

         /**

          * Check for empty parameter and throw localized exception if empty

          *

          * @param param

          * @param parameter name

          * @throws MissingParameterException

          */

         private void checkForEmptyParameter(String param, String paramName)

                         throws MissingParameterException, InvalidParameterException {

                 if (param != null && param.trim().isEmpty()) {

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

                 }

         }

     @Override

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

         public ReqComponentInfo createReqComponent(final String reqComponentType, final ReqComponentInfo reqComponentInfo) throws AlreadyExistsException, DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

         checkForMissingParameter(reqComponentType, "reqComponentType");

         checkForMissingParameter(reqComponentInfo, "reqComponentInfo");

         ReqComponent reqComp = null;

         try {

             reqComp = statementAssembler.toReqComponentRelation(false, reqComponentInfo);

         } catch (VersionMismatchException e) {

             throw new OperationFailedException("Version Mismatch.", e);

         }

         reqComp = statementDao.create(reqComp);

         return statementAssembler.toReqComponentInfo(reqComp, null, null);

     }

     @Override

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

         public StatementInfo createStatement(final String statementType, final StatementInfo statementInfo) throws AlreadyExistsException, DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

         checkForMissingParameter(statementType, "statementType");

         checkForMissingParameter(statementInfo, "statementInfo");

         Statement statement = null;

         try {

             statement = statementAssembler.toStatementRelation(false, statementInfo);

         } catch (VersionMismatchException e) {

             throw new OperationFailedException("Version Mismatch.", e);

         }

         statementDao.create(statement);

         StatementInfo info = StatementAssembler.toStatementInfo(statement);

         return info;

     }

     @Override

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

         public StatementTreeViewInfo createStatementTreeView(final StatementTreeViewInfo statementTreeViewInfo) throws AlreadyExistsException, DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException, CircularReferenceException {

             try {

             // insert statements and reqComponents if they do not already exists in database

             updateSTVHelperCreateStatements(statementTreeViewInfo);

             updateStatementTreeViewHelper(statementTreeViewInfo);

             StatementTreeViewInfo test = getStatementTreeView(statementTreeViewInfo.getId());

             return test;

                 } catch (VersionMismatchException e) {

                         throw new OperationFailedException("Create failed.", e);

                 }

     }

     @Override

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

         public StatusInfo deleteReqComponent(final String reqComponentId) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

         checkForMissingParameter(reqComponentId, "reqComponentId");

         ReqComponent reqComp = statementDao.fetch(ReqComponent.class, reqComponentId);

         if(reqComp==null){

             throw new DoesNotExistException("ReqComponent does not exist for id: "+reqComponentId);

         }

         statementDao.delete(reqComp);

         StatusInfo statusInfo = new StatusInfo();

         statusInfo.setSuccess(true);

         statusInfo.setMessage("Requirement component successfully deleted");

         return statusInfo;

     }

     @Override

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

         public StatusInfo deleteStatement(final String statementId) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

         checkForMissingParameter(statementId, "statementId");

         Statement stmt = statementDao.fetch(Statement.class, statementId);

         if(stmt==null){

             throw new DoesNotExistException("Statement does not exist for id: "+statementId);

         }

                 try {

                         Statement parent = statementDao.getParentStatement(statementId);

                 List<Statement> children = parent.getChildren();

                 for (int i = 0; i < children.size(); i++) {

                         if (children.get(i).getId().equals(statementId)) {

                                 children.remove(i);

                                 break;

                         }

                 }

                 statementDao.update(parent);

                 } catch (DoesNotExistException e) {

                         // Ignore in this case

                 }

         statementDao.delete(stmt);

         StatusInfo statusInfo = new StatusInfo();

         statusInfo.setSuccess(true);

         statusInfo.setMessage("Statement successfully deleted");

         return statusInfo;

     }

     @Override

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

         public StatusInfo deleteStatementTreeView(final String statementId) throws DoesNotExistException{

         Statement stmt = statementDao.fetch(Statement.class, statementId);

         try{

                 Statement parent = statementDao.getParentStatement(statementId);

                 //remove the child from the parent

             if(parent.getChildren()!=null){

                         for(Iterator<Statement> iter = parent.getChildren().iterator();iter.hasNext();){

                                 Statement childStmt = iter.next();

                                 if(stmt.getId().equals(childStmt.getId())){

                                         iter.remove();

                                         break;

                                 }

                         }

                 }

                 statementDao.update(parent);

             }catch(DoesNotExistException e){

                     //Ignore in this case

             }

         //delete the tree hierarchy;

         deleteRecursively(stmt);

         StatusInfo statusInfo = new StatusInfo();

         statusInfo.setSuccess(true);

         statusInfo.setMessage("Statement Tree successfully deleted");

         return statusInfo;

     }

         private void deleteRecursively(Statement stmt) {

             if(stmt.getChildren()!=null){

                     List<Statement> childStmts = new ArrayList<Statement>(stmt.getChildren());

                     stmt.getChildren().clear();

                     stmt = statementDao.update(stmt);

                     for(Statement childStmt:childStmts){

                             deleteRecursively(childStmt);

                     }

             }

             statementDao.delete(stmt);

         }

         @Override

     @Transactional(readOnly=true)

     public ReqComponentInfo getReqComponent(final String reqComponentId) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         return statementAssembler.toReqComponentInfo(statementDao.fetch(ReqComponent.class, reqComponentId), null, null);

     }

     @Override

     @Transactional(readOnly=true)

     public List<ReqComponentInfo> getReqComponentsByType(final String reqComponentTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(reqComponentTypeKey, "reqComponentTypeKey");

         List<ReqComponent> reqComponents = statementDao.getReqComponentsByType(reqComponentTypeKey);

         return statementAssembler.toReqComponentInfos(reqComponents, null, null);

     }

     @Override

     @Transactional(readOnly=true)

     public StatementInfo getStatement(final String statementId) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         StatementInfo statementInfo = null;

         checkForMissingParameter(statementId, "statementId");

         statementInfo = StatementAssembler.toStatementInfo(statementDao.fetch(Statement.class, statementId));

         return statementInfo;

     }

     @Override

     @Transactional(readOnly=true)

     public List<StatementInfo> getStatementsByType(final String statementTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(statementTypeKey, "statementTypeKey");

         List<Statement> statements = statementDao.getStatementsForStatementType(statementTypeKey);

         return StatementAssembler.toStatementInfos(statements);

     }

     @Override

     @Transactional(readOnly=true)

     public List<StatementInfo> getStatementsUsingReqComponent(final String reqComponentId) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForNullOrEmptyParameter(reqComponentId, "reqComponentId");

         List<Statement> list = statementDao.getStatementsForReqComponent(reqComponentId);

         return StatementAssembler.toStatementInfos(list);

     }

     /**

      * Gets child statements but does no downward recursion of child statements.

      *

      * @param statementId statement identifier

      * @return List of child statements using the specified statement

      * @throws DoesNotExistException Statement not found

      * @throws InvalidParameterException Invalid statementId

      * @throws MissingParameterException statementId not specified

      * @throws OperationFailedException Unable to complete request

      */

     @Transactional(readOnly=true)

         public List<StatementInfo> getStatementsUsingStatement(final String statementId)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForNullOrEmptyParameter(statementId, "statementId");

                 Statement statement = statementDao.fetch(Statement.class, statementId);

                 List<StatementInfo> list = StatementAssembler.toStatementInfos(statement.getChildren());

                 return list;

         }

     @Override

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

         public StatementInfo updateStatement(final String statementId, final StatementInfo statementInfo) throws CircularReferenceException, DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException, VersionMismatchException {

         //Check Missing params

         checkForMissingParameter(statementId, "statementId");

         checkForMissingParameter(statementInfo, "statementInfo");

         //Set all the values on statementInfo

         statementInfo.setId(statementId);

         //Update persistence entity from the statementInfo

         Statement stmt = statementAssembler.toStatementRelation(true, statementInfo);

         //Update the statement

         Statement updatedStmt = statementDao.update(stmt);

         //Copy back to an statementInfo and return

         StatementInfo updStatementInfo = StatementAssembler.toStatementInfo(updatedStmt);

         return updStatementInfo;

     }

     @Override

     public List<ValidationResultInfo> validateReqComponent(final String validationType, final ReqComponentInfo reqComponentInfo) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(validationType, "validationType");

         checkForMissingParameter(reqComponentInfo, "reqComponentInfo");

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

         Validator defaultValidator = validatorFactory.getValidator();

         List<ValidationResultInfo> validationResults = defaultValidator.validateObject(reqComponentInfo, objStructure);

         return validationResults;

     }

     @Override

     public List<ValidationResultInfo> validateStatement(final String validationType, final StatementInfo statementInfo) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(validationType, "validationType");

         checkForMissingParameter(statementInfo, "statementInfo");

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

         Validator defaultValidator = validatorFactory.getValidator();

         List<ValidationResultInfo> validationResults = defaultValidator.validateObject(statementInfo, objStructure);

         return validationResults;

     }

     @Override

     public ObjectStructureDefinition getObjectStructure(String objectTypeKey) {

         return dictionaryServiceDelegate.getObjectStructure(objectTypeKey);

     }

     @Override

     public SearchCriteriaTypeInfo getSearchCriteriaType(final String searchCriteriaTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         return searchManager.getSearchCriteriaType(searchCriteriaTypeKey);

     }

     @Override

     public List<SearchCriteriaTypeInfo> getSearchCriteriaTypes() throws OperationFailedException {

         return searchManager.getSearchCriteriaTypes();

     }

     @Override

     public SearchResultTypeInfo getSearchResultType(final String searchResultTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(searchResultTypeKey, "searchResultTypeKey");

         return searchManager.getSearchResultType(searchResultTypeKey);

     }

     @Override

     public List<SearchResultTypeInfo> getSearchResultTypes() throws OperationFailedException {

         return searchManager.getSearchResultTypes();

     }

     @Override

     public SearchTypeInfo getSearchType(final String searchTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(searchTypeKey, "searchTypeKey");

         return searchManager.getSearchType(searchTypeKey);

     }

     @Override

     public List<SearchTypeInfo> getSearchTypes() throws OperationFailedException {

         return searchManager.getSearchTypes();

     }

     @Override

     public List<SearchTypeInfo> getSearchTypesByCriteria(final String searchCriteriaTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(searchCriteriaTypeKey, "searchCriteriaTypeKey");

         return searchManager.getSearchTypesByCriteria(searchCriteriaTypeKey);

     }

     @Override

     public List<SearchTypeInfo> getSearchTypesByResult(final String searchResultTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(searchResultTypeKey, "searchResultTypeKey");

         return searchManager.getSearchTypesByResult(searchResultTypeKey);

     }

         @Override

     public SearchResult search(final SearchRequest searchRequest) throws MissingParameterException {

         checkForMissingParameter(searchRequest, "searchRequest");

         if(SEARCH_KEY_DEPENDENCY_ANALYSIS.equals(searchRequest.getSearchKey())){

                 //Special case for dependency analysis.

                 //Parse out query params and execute custom search

                 List<String> cluVersionIndIds = new ArrayList<String>();

                 List<String> cluSetIds = new ArrayList<String>();

                     for(SearchParam param:searchRequest.getParams()){

                             if("stmt.queryParam.cluSetIds".equals(param.getKey())){

                                     cluSetIds.addAll((List<String>)param.getValue());

                                     continue;

                             }else if("stmt.queryParam.cluVersionIndIds".equals(param.getKey())){

                                     cluVersionIndIds.addAll((List<String>)param.getValue());

                             }

                     }

                     if(cluVersionIndIds.isEmpty()){

                             cluVersionIndIds.add("");

                     }

                     if(cluSetIds.isEmpty()){

                             cluSetIds.add("");

                     }

                         return doDependencyAnalysisSearch(cluVersionIndIds,cluSetIds);

         }

         return searchManager.search(searchRequest, statementDao);

     }

     private SearchResult doDependencyAnalysisSearch(

                         List<String> cluVersionIndIds, List<String> cluSetIds) {

             //First look up all the statements that have requirement components that reference the 

             //given cluIds and clusets

             List<Object[]> results = statementDao.getStatementsWithDependencies(cluVersionIndIds,cluSetIds);

             //From the Object[], which contains a statement at index 0, and a result component id at index 1

             //obtain a list of statements and a comma delimited list of requirement component ids for each 

             //statement which contain the target clu/cluset

             Map<String,String> statementToResultComponentIds = new HashMap<String,String>();

             Map<String, Statement> statements = new HashMap<String,Statement>();

             for(Object[] result:results){

                     Statement statement = (Statement) result[0];

                     statements.put(statement.getId(),statement);

                     String resultComponentIds = statementToResultComponentIds.get(statement.getId());

                     if(resultComponentIds == null){

                             resultComponentIds = (String)result[1];

                     }else{

                             resultComponentIds+="," + (String)result[1];

                     }

                     statementToResultComponentIds.put(statement.getId(), resultComponentIds);

             }

             //HashMap of root statements used to store non duplicate root statements 

             Map<String,Statement> rootStatements = new HashMap<String,Statement>();

             Map<String,String> rootToRequirementComponentList = new HashMap<String,String>();

             //Next find the root statements since only the root is related to a clu

             for(Statement statement:statements.values()){

                     Statement child = statement;

                     Statement parent = child;

                     while(parent!=null){

                             try{

                                     //Search for parent of this child

                                     parent = statementDao.getParentStatement(child.getId());

                                     child = parent;

                             }catch(DoesNotExistException e){

                                     //This is the root (no parent) so add to list of roots

                                     rootStatements.put(child.getId(), child);

                                     //Create a comma delimited mapping of all the requirement components

                                     //ids that contain the trigger clu within this root statement

                                 String childStatementList = rootToRequirementComponentList.get(child.getId());

                                 if(childStatementList==null){

                                         childStatementList = statementToResultComponentIds.get(statement.getId());

                                 }else{

                                         childStatementList += ","+statementToResultComponentIds.get(statement.getId());

                                 }

                                 rootToRequirementComponentList.put(child.getId(), childStatementList);

                                     //Exit condition(hopefully there are no cyclic statements)

                                     parent = null;

                             }

                     }

             }

             SearchResult searchResult = new SearchResult();

             //Record each statement's reference id type and reference type as a search result row

             //Use a hashset of the cell values to remove duplicates

             Set<String> processed = new HashSet<String>();

             for(Statement statement:rootStatements.values()){

                     for(RefStatementRelation relation:statement.getRefStatementRelations()){

                             String rowId = relation.getRefObjectId()+"|"+relation.getRefObjectTypeKey();

                             if(!processed.contains(rowId)){

                                     //This row does not exist yet so we can add it to the results.

                                     processed.add(rowId);

                                     SearchResultRow row = new SearchResultRow();

                                     row.addCell("stmt.resultColumn.refObjId",relation.getRefObjectId());

                                     row.addCell("stmt.resultColumn.rootId",statement.getId());

                                     row.addCell("stmt.resultColumn.requirementComponentIds",rootToRequirementComponentList.get(statement.getId()));

                                     row.addCell("stmt.resultColumn.statementTypeId",statement.getStatementType().getId());

                                     row.addCell("stmt.resultColumn.statementTypeName",statement.getStatementType().getName());

                                      searchResult.getRows().add(row);

                             }

                     }

             }

                 return searchResult;

         }

         @Override

     public List<String> getObjectTypes() {

         return dictionaryServiceDelegate.getObjectTypes();

     }

     @Override

     @Transactional(readOnly=true)

     public StatementTypeInfo getStatementType(final String statementTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         return StatementAssembler.toStatementTypeInfo(statementDao.fetch(StatementType.class, statementTypeKey));

     }

     @Override

     @Transactional(readOnly=true)

     public List<StatementTypeInfo> getStatementTypes() throws OperationFailedException {

         return StatementAssembler.toStatementTypeInfos(statementDao.find(StatementType.class));

     }

     @Transactional(readOnly=true)

     public List<String> getStatementTypesForStatementType(final String statementTypeKey) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

             StatementTypeInfo type = StatementAssembler.toStatementTypeInfo(statementDao.fetch(StatementType.class, statementTypeKey));

             return type.getAllowedStatementTypes();

     }

     @Override

     @Transactional(readOnly=true)

     public List<ReqComponentTypeInfo> getReqComponentTypes() throws OperationFailedException {

         return StatementAssembler.toReqComponentTypeInfos(statementDao.find(ReqComponentType.class));

     }

     @Override

     @Transactional(readOnly=true)

     public ReqComponentTypeInfo getReqComponentType(final String reqComponentTypeKey)

                     throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         return StatementAssembler.toReqComponentTypeInfo(statementDao.fetch(ReqComponentType.class, reqComponentTypeKey));

     }

     @Override

     @Transactional(readOnly=true)

     public List<ReqComponentTypeInfo> getReqComponentTypesForStatementType(final String statementTypeKey)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         checkForMissingParameter(statementTypeKey, "statementTypeKey");

         StatementType stmtType = statementDao.fetch(StatementType.class, statementTypeKey);

         if(null == stmtType) {

             throw new DoesNotExistException("Statement Type: " + statementTypeKey + " does not exist.");

         }

         return StatementAssembler.toReqComponentTypeInfosOrdered( stmtType.getAllowedReqComponentTypes() );

     }

     @Override

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

         public ReqComponentInfo updateReqComponent(final String reqComponentId, final ReqComponentInfo reqComponentInfo)

                     throws DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException, VersionMismatchException {

         //Check Missing params

         checkForMissingParameter(reqComponentId, "reqComponentId");

         checkForMissingParameter(reqComponentInfo, "reqComponentInfo");

         //Set all the values on reqComponentInfo

         reqComponentInfo.setId(reqComponentId);

         ReqComponent reqComp = null;

         //Update persistence entity from the reqComponentInfo

         reqComp = statementAssembler.toReqComponentRelation(true, reqComponentInfo);

         //Update the reqComponen

         ReqComponent updatedReqComp = statementDao.update(reqComp);

         //Copy back to an reqComponentInfo and return

         ReqComponentInfo updReqCompInfo = StatementAssembler.toReqComponentInfo(updatedReqComp);

         return updReqCompInfo;

     }

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

         public RefStatementRelationInfo createRefStatementRelation(final RefStatementRelationInfo refStatementRelationInfo)

                         throws AlreadyExistsException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

                 checkForMissingParameter(refStatementRelationInfo, "refStatementRelationInfo");

                 Statement statement = this.statementDao.fetch(Statement.class, refStatementRelationInfo.getStatementId());

                 RefStatementRelationType type = this.statementDao.fetch(RefStatementRelationType.class, refStatementRelationInfo.getType());

         // make sure refObjectType exist

         this.statementDao.fetch(ObjectType.class, refStatementRelationInfo.getRefObjectTypeKey());

                 RefStatementRelation entity = new RefStatementRelation();

                 BeanUtils.copyProperties(refStatementRelationInfo, entity, new String[] {

                                 "statementId", "attributes", "metaInfo", "type", "id"});

                 entity.setRefStatementRelationType(type);

                 entity.setStatement(statement);

                 List<RefStatementRelationAttribute> attributes = StatementAssembler.toGenericAttributes(RefStatementRelationAttribute.class, refStatementRelationInfo.getAttributes(), entity, this.statementDao);

                 entity.setAttributes(attributes);

                 RefStatementRelation newEntity = this.statementDao.create(entity);

                 RefStatementRelationInfo newDto = StatementAssembler.toRefStatementRelationInfo(newEntity);

                 return newDto;

         }

         @Override

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

         public RefStatementRelationInfo updateRefStatementRelation(final String refStatementRelationId, final RefStatementRelationInfo refStatementRelationInfo)

                         throws DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException, VersionMismatchException {

                 checkForNullOrEmptyParameter(refStatementRelationId, "refStatementRelationId");

                 checkForMissingParameter(refStatementRelationInfo, "refStatementRelationInfo");

                 refStatementRelationInfo.setId(refStatementRelationId);

                 RefStatementRelation refStatementRel = statementAssembler.toRefStatementRelation(true, refStatementRelationInfo);

                 RefStatementRelation updatedRefStatementRel = statementDao.update(refStatementRel);

                 RefStatementRelationInfo dto = StatementAssembler.toRefStatementRelationInfo(updatedRefStatementRel);

                 return dto;

         }

         @Override

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

         public StatusInfo deleteRefStatementRelation(final String refStatementRelationId)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

                 checkForNullOrEmptyParameter(refStatementRelationId, "refStatementRelationId");

                 this.statementDao.delete(RefStatementRelation.class, refStatementRelationId);

         StatusInfo statusInfo = new StatusInfo();

         statusInfo.setSuccess(true);

         statusInfo.setMessage("Reference statement relation successfully deleted");

         return statusInfo;

         }

         @Override

         public List<ValidationResultInfo> validateRefStatementRelation(final String validationType, RefStatementRelationInfo refStatementRelationInfo)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

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

         Validator defaultValidator = validatorFactory.getValidator();

         List<ValidationResultInfo> validationResults = defaultValidator.validateObject(refStatementRelationInfo, objStructure);

                 return validationResults;

         }

     @Override

     @Transactional(readOnly=true)

     public StatementTreeViewInfo getStatementTreeView(final String statementId)

             throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

             checkForNullOrEmptyParameter("statementId", statementId);

             return getStatementTreeView(statementId, null, null);

     }

     @Override

     @Transactional(readOnly=true)

     public StatementTreeViewInfo getStatementTreeViewForNlUsageType(final String statementId, final String nlUsageTypeKey, final String language)

                 throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

             checkForNullOrEmptyParameter("statementId", statementId);

             checkForNullOrEmptyParameter("nlUsageTypeKey", nlUsageTypeKey);

             checkForNullOrEmptyParameter("language", language);

             return getStatementTreeView(statementId, nlUsageTypeKey, language);

     }

     private StatementTreeViewInfo getStatementTreeView(final String statementId, final String nlUsageTypeKey, final String language)

             throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         StatementTreeViewInfo statementTreeViewInfo = null;

         StatementInfo statementInfo = getStatement(statementId);

         if (statementInfo == null) return null;

         statementTreeViewInfo = new StatementTreeViewInfo();

         getStatementTreeViewHelper(statementInfo, statementTreeViewInfo, nlUsageTypeKey, language);

         return statementTreeViewInfo;

             /*

             Map<String, String> configuration = new HashMap<String, String>();

             configuration.put("USAGE_TYPE_KEY", nlUsageTypeKey);

             configuration.put("NL_KEY", language);

             StatementTreeViewInfo result = new StatementTreeViewInfo();

             try {

                         statementTreeViewAssembler.assemble(getStatement(statementId), result, false, configuration);

                         return result;

             } catch (AssemblyException e) {

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

                 }

                 */

     }

     /**

      * Goes through the list of reqComponentIds in statementInfo and retrieves the reqComponentInfos being referenced

      * @param statementInfo

      * @return list of reqComponentInfo referenced by the list of reqComponentIds in statementInfo

      * @throws DoesNotExistException

      * @throws InvalidParameterException

      * @throws MissingParameterException

      * @throws OperationFailedException

      */

     private List<ReqComponentInfo> getReqComponentInfos(final StatementInfo statementInfo, final String nlUsageTypeKey, final String language)

             throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         List<ReqComponentInfo> reqComponentInfos = new ArrayList<ReqComponentInfo>();

         if (statementInfo == null) return null;

         if (statementInfo.getReqComponentIds() != null) {

             for (String reqComponentId : statementInfo.getReqComponentIds()) {

                 //ReqComponentInfo reqCompInfo = getReqComponent(reqComponentId);

                     ReqComponentInfo reqCompInfo = statementAssembler.toReqComponentInfo(statementDao.fetch(ReqComponent.class, reqComponentId), nlUsageTypeKey, language);

                 reqComponentInfos.add(reqCompInfo);

             }

         }

         return reqComponentInfos;

     }

     /**

      * Goes through the list of statementIds in statementInfo and retrieves all

      * information regarding to the current statementInfo and all the

      * sub-statements referenced by statementIds.  Data will be populated into

      * statementTreeViewInfo

      * @param statementInfo

      * @return void

      * @throws DoesNotExistException

      * @throws InvalidParameterException

      * @throws MissingParameterException

      * @throws OperationFailedException

      */

     private void getStatementTreeViewHelper(final StatementInfo statementInfo, final StatementTreeViewInfo statementTreeViewInfo,

                     final String nlUsageTypeKey, final String language)

             throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

         if (statementInfo == null) return;

         statementAssembler.copyValues(statementTreeViewInfo, statementInfo);

         statementTreeViewInfo.setReqComponents(getReqComponentInfos(statementInfo, nlUsageTypeKey, language));

         // get statements recursively and convert them into statementTreeViewInfo

         if (statementInfo.getStatementIds() != null) {

             for (String statementId : statementInfo.getStatementIds()) {

                 StatementInfo subStatement = getStatement(statementId);

                 List<StatementTreeViewInfo> statements =

                     (statementTreeViewInfo.getStatements() == null) ? new ArrayList<StatementTreeViewInfo>() : statementTreeViewInfo.getStatements();

                 StatementTreeViewInfo subStatementTreeViewInfo = new StatementTreeViewInfo();

                 // recursive call to get subStatementTreeViewInfo

                 getStatementTreeViewHelper(subStatement, subStatementTreeViewInfo, nlUsageTypeKey, language);

                 statements.add(subStatementTreeViewInfo);

                 statementTreeViewInfo.setStatements(statements);

             }

         }

     }

     @Override

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

         public StatementTreeViewInfo updateStatementTreeView(final String statementId, final StatementTreeViewInfo statementTreeViewInfo)

             throws CircularReferenceException, DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException, VersionMismatchException {

                 Statement stmt = this.statementDao.fetch(Statement.class, statementTreeViewInfo.getId());

             if (stmt == null) {

                 throw new DoesNotExistException("Statement does not exist for id: " + statementTreeViewInfo.getId());

                 }

                 if (!String.valueOf(stmt.getVersionNumber()).equals(statementTreeViewInfo.getMetaInfo().getVersionInd())) {

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

                 }

             Set<String> statementIdsToDelete = new HashSet<String>();

             List<ReqComponent> requirementComponentsToCreate = new ArrayList<ReqComponent>();

             List<Statement> statmentsToUpdate = new ArrayList<Statement>();

             //Transform the tree into a statement with all of its children

             stmt = statementAssembler.toStatementFromTree(stmt, statementTreeViewInfo, statementIdsToDelete, statmentsToUpdate, requirementComponentsToCreate);

             //Create any new reqComponents 

             for(ReqComponent reqComponent:requirementComponentsToCreate){

                         statementDao.create(reqComponent);

                 }

             //Update the actual statement

             stmt = statementDao.update(stmt);

             //Update statements where the join table needs to be cleared

             //delete orphaned statements

             for(String statementIdToDelete:statementIdsToDelete){

                     statementDao.delete(Statement.class, statementIdToDelete);

             }

             //Transform back to a dto

             StatementTreeViewInfo result = statementAssembler.toStatementTreeViewInfo(stmt);

                 return result;

     }

     /*private List<String> notIn(

             StatementTreeViewInfo oldTree,

             StatementTreeViewInfo newTree) {

         List<String> results = new ArrayList<String>(17);

         List<String> oldStatementIds = new ArrayList<String>(17);

         List<String> newStatementIds = new ArrayList<String>(17);

         getStatementIds(oldTree, oldStatementIds);

         getStatementIds(newTree, newStatementIds);

         if (oldStatementIds != null) {

             for (String oldStatementId : oldStatementIds) {

                 boolean inNewStatementIds = false;

                 if (newStatementIds != null) {

                     for (String newStatementId : newStatementIds) {

                         if (oldStatementId.equals(newStatementId)) {

                             inNewStatementIds = true;

                         }

                     }

                 }

                 if (!inNewStatementIds) {

                     results.add(oldStatementId);

                 }

             }

         }

         return results;

     }

     private void getStatementIds(StatementTreeViewInfo statementTreeViewInfo, List<String> statementIds) {

         if (statementTreeViewInfo.getStatements() != null) {

             for (StatementTreeViewInfo subTree : statementTreeViewInfo.getStatements()) {

                 getStatementIds(subTree, statementIds);

             }

         }

         statementIds.add(statementTreeViewInfo.getId());

     }*/

         private void updateStatementTreeViewHelper(StatementTreeViewInfo statementTreeViewInfo) throws CircularReferenceException, DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException, VersionMismatchException {

         if (statementTreeViewInfo.getStatements() != null) {

             for (StatementTreeViewInfo subStatement : statementTreeViewInfo.getStatements()) {

                 updateStatementTreeViewHelper(subStatement);

             }

         }

         if (statementTreeViewInfo.getReqComponents() != null) {

             List<ReqComponentInfo> updatedReqComponentInfos = new ArrayList<ReqComponentInfo>(7);

             for (ReqComponentInfo reqComponentInfo : statementTreeViewInfo.getReqComponents()) {

                 ReqComponentInfo updatedReqComponentInfo = updateReqComponent(reqComponentInfo.getId(), reqComponentInfo);

                 updatedReqComponentInfos.add(updatedReqComponentInfo);

             }

             statementTreeViewInfo.setReqComponents(updatedReqComponentInfos);

         }

         StatementInfo updatedStatementInfo = updateStatement(statementTreeViewInfo.getId(), statementAssembler.toStatementInfo(

                 statementTreeViewInfo));

         statementAssembler.copyValues(statementTreeViewInfo, updatedStatementInfo);

     }

         private void updateSTVHelperCreateStatements(StatementTreeViewInfo statementTreeViewInfo) throws CircularReferenceException, DataValidationErrorException, DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException, VersionMismatchException {

         String statementId = null;

         StatementInfo origStatementInfo = null;

         StatementInfo newStatementInfo = null;

         if (statementTreeViewInfo.getStatements() != null) {

             for (StatementTreeViewInfo subTreeInfo : statementTreeViewInfo.getStatements()) {

                 updateSTVHelperCreateStatements(subTreeInfo);

             }

         }

         if (statementTreeViewInfo.getReqComponents() != null) {

             List<ReqComponentInfo> rcsAfterInserts = new ArrayList<ReqComponentInfo>(7);

             for (ReqComponentInfo reqComponentInfo : statementTreeViewInfo.getReqComponents()) {

                 String reqComponentId = reqComponentInfo.getId();

                 ReqComponentInfo origReqComponentInfo = null;

                 ReqComponentInfo rcAfterInsert = null;

                 // determine the original reqComponentInfo

                 if (reqComponentId != null) {

                     try {

                         origReqComponentInfo = getReqComponent(reqComponentId);

                     } catch (DoesNotExistException dnee) {

                         origReqComponentInfo = null;

                     }

                 }

                 if (origReqComponentInfo == null) {

                     // The reqComponentInfo is a new one so create it

                     // the id here even if it is not null it is the temporary ids assigned by client

                     // so resets the id to null to allow a new id to be generated.

                     reqComponentInfo.setId(null);

                     try {

                         rcAfterInsert = createReqComponent(reqComponentInfo.getType(), reqComponentInfo);

                     } catch (AlreadyExistsException e) {

                         // shouldn't happen because of all the check that has been done up to this point

                         // if this exception is thrown it should be an error!

                         throw new OperationFailedException("Tried to create a reqComponent that already exists");

                     }

                 } else {

                     rcAfterInsert = reqComponentInfo;

                 }

                 rcsAfterInserts.add(rcAfterInsert);

             }

             statementTreeViewInfo.setReqComponents(rcsAfterInserts);

         }

         // check if statementTreeViewInfo already exist if not create it.

         statementId = statementTreeViewInfo.getId();

         if (statementId != null) {

             try {

                 origStatementInfo = getStatement(statementId);

             } catch(DoesNotExistException dnee) {

                 origStatementInfo = null;

             }

         }

         if (origStatementInfo == null) {

             // the id here even if it is not null it is the temporary ids assigned by client

             // so resets the id to null to allow a new id to be generated.

 //            statementTreeViewInfo.setId(null);

             newStatementInfo = statementAssembler.toStatementInfo(statementTreeViewInfo);

             try {

                 newStatementInfo = createStatement(newStatementInfo.getType(), newStatementInfo);

             } catch (AlreadyExistsException e) {

                 // shouldn't happen because of all the check that has been done up to this point

                 // if this exception is thrown it should be an error!

                 throw new OperationFailedException("Tried to create a statement that already exists");

             }

             statementAssembler.copyValues(statementTreeViewInfo, newStatementInfo);

         }

     }

     /**

      *

      * @return a list of relationships in the first list but not in the second

      */

         @Override

     @Transactional(readOnly=true)

         public RefStatementRelationTypeInfo getRefStatementRelationType(final String refStatementRelationTypeKey)

                         throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

                 checkForNullOrEmptyParameter(refStatementRelationTypeKey, "refStatementRelationTypeKey");

                 RefStatementRelationType type = this.statementDao.fetch(RefStatementRelationType.class, refStatementRelationTypeKey);

                 return StatementAssembler.toRefStatementRelationTypeInfo(type);

         }

         @Override

     @Transactional(readOnly=true)

         public List<RefStatementRelationTypeInfo> getRefStatementRelationTypes()

                         throws OperationFailedException {

                 List<RefStatementRelationType> entities = this.statementDao.find(RefStatementRelationType.class);

                 return StatementAssembler.toRefStatementRelationTypeInfos(entities);

         }

         @Override

     @Transactional(readOnly=true)

         public List<String> getRefStatementRelationTypesForRefObjectSubType(final String refSubTypeKey)

                 throws DoesNotExistException,InvalidParameterException, MissingParameterException, OperationFailedException {

                 throw new UnsupportedOperationException("Method not yet implemented!");

         }

         @Override

     @Transactional(readOnly=true)

         public List<String> getStatementTypesForRefStatementRelationType(final String refStatementRelationTypeKey)

                 throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {

                 throw new UnsupportedOperationException("Method not yet implemented!");

         }

         public void setValidatorFactory(ValidatorFactory validatorFactory) {

                 this.validatorFactory = validatorFactory;

         }

 }