Shared Questionnaire System

package net.sqs2.omr.app.service;

import java.io.File;

import net.sqs2.omr.master.PageMasterAccessor;

import net.sqs2.omr.model.PageTaskAccessor;

import net.sqs2.omr.model.PageTaskHolder;

import net.sqs2.omr.session.service.MarkReaderSession;

import net.sqs2.omr.session.service.MarkReaderSessionServices;

import net.sqs2.omr.session.source.SessionSource;

import net.sqs2.omr.session.source.ContentAccessor;

public class ClearSessionAppService extends AbstractSessionAppService<Void>{        

        public ClearSessionAppService(File sourceDirectoryRoot){

                super(sourceDirectoryRoot);

        }

        public Void call(){

                clearCache(sourceDirectoryRoot);

                return null;

        }

        private void clearCache(final File sourceDirectoryRoot) {

                MarkReaderSession sessionService = MarkReaderSessionServices.get(sourceDirectoryRoot);

                if(sessionService == null){

                        return;

                }

                SessionSource sessionSource = sessionService.getSessionSource();

                if(sessionSource != null){

                        ContentAccessor accessor = sessionSource.getContentAccessor();

                        PageMasterAccessor pageMasterAccessor = accessor.getPageMasterAccessor();

                        pageMasterAccessor.removeAll();

                        PageTaskAccessor taskAccessor = accessor.getPageTaskAccessor();

                        if (taskAccessor != null) {

                                taskAccessor.removeAll();

                        }

                }

                PageTaskHolder taskHolder = sessionService.getTaskHolder();

                taskHolder.clear();

        }

}