thanks for you're quick reply.
If the flow is always threadsafe, why do I get NullPointerExceptions with multiple users.
Do you know why it is behaving strange.Where can I search for the problem
Code:
<!-- Decide txt/dbf -->
<decision-state id="decisionTXTState">
<on-entry>
<evaluate expression="fileExtension.createFromFileName(fileUploadCommand.file)" result="flowScope.extension"></evaluate>
<!--<evaluate expression="clientService.retrieveClients()" result="flashScope.clientList"></evaluate>-->
<evaluate expression="clientService.retrieveClient(fileUploadCommand.clientId)" result="flowScope.selectedClient"></evaluate>
</on-entry>
<if test="extension.isDBF()" then="changeNumberToEnglishFormat" />
<if test="extension.isTxt() and branchService.isTextEnabled(ipAddress)" then="profileConfirmationState" else="txtNotEnabledState"/>
</decision-state>
<!-- Profiel bevestigen -->
<view-state id="profileConfirmationState" view="fileupload/profileConfirmation">
<transition on="continue" to="changeNumberToEnglishFormat"/>
<transition on="cancel" to="canceledFileUploadState"/>
</view-state>
<view-state id="txtNotEnabledState" view="fileupload/txtNotEnabled">
</view-state>
<!-- to change the number format of the hash, batch from the command to English -->
<action-state id="changeNumberToEnglishFormat">
<evaluate expression="convertNumberToEnglishFormat.returnCommandWithEnglishFormat(fileUploadCommand)" result="flowScope.fileUploadCommand"></evaluate>
<transition to="ipAddressDecisionState"></transition>
</action-state>
<!-- Verify is the upload will be done from a valid ipaddress -->
<decision-state id="ipAddressDecisionState">
<on-entry>
<evaluate expression="branchService.retrieveBranch(ipAddress)" result="flowScope.branch"></evaluate>
<evaluate expression="branchService.retrieveBranchName(ipAddress)" result="flowScope.branchName"></evaluate>
<evaluate expression="ipValidation.checkIfExistingIp(branch)" result="flowScope.errorList"></evaluate>
</on-entry>
<if test="errorList.isEmpty()" then="validateCheckSumActionState" else="errorState"/>
<exception-handler bean="flowExceptionResolver"/>
</decision-state>
<!-- Checksum van the file -->
<decision-state id="validateCheckSumActionState">
<on-entry>
<evaluate expression="validateCheckSum.calculateCheckSum(fileUploadCommand.fileContent)" result="flowScope.checkSum"></evaluate>
<evaluate expression="fileExtension.createFromFileName(fileUploadCommand.file)" result="flowScope.extension"></evaluate>
</on-entry>
<if test="clientFileService.checkSumIsUnique(checkSum)" then="generateRecordsState" else="checkSumNotUniqueState"/>
<exception-handler bean="flowExceptionResolver"/>
</decision-state>
<!-- Indien de checksum al voorkomt wordt een melding gegeven -->
<view-state id="checkSumNotUniqueState" view="fileupload/checksum.not.unique">
<transition on="continue" to="generateRecordsState"/>
<transition on="cancel" to="canceledFileUploadState"/>
<exception-handler bean="flowExceptionResolver"/>
</view-state>
<end-state id="canceledFileUploadState" view="externalRedirect:contextRelative:/fileupload/fileupload.htm">
</end-state>
<!-- Generate records (dbf and txt) -->
<decision-state id="generateRecordsState">
<on-entry>
<evaluate expression="integration.readForFaults(extension, fileUploadCommand.clientId, fileUploadCommand.fileContent, fileUploadCommand.bankCodeFile)"></evaluate>
<evaluate expression="integration.getFilteredRecords().get(1)" result="flowScope.errorRecords"></evaluate>
</on-entry>
<if test="errorRecords.isEmpty()" then="hashBatchValidationState" else="errorRecordsState"/>
<exception-handler bean="flowExceptionResolver"/>
</decision-state>
<decision-state id="hashBatchValidationState">
<on-entry>
<evaluate expression="integration.doForHashBatchValidation(fileUploadCommand)"></evaluate>
<evaluate expression="integration.getValidationMessages()" result="flowScope.errorList"></evaluate>
</on-entry>
<if test="errorList.isEmpty()" then="postValidationState" else="errorState"/>
<exception-handler bean="flowExceptionResolver"/>
</decision-state>
<action-state id="postValidationState">
<on-entry>
<evaluate expression="integration.doForPostValidation(fileUploadCommand.fee)"></evaluate>
<evaluate expression="integration.getClient()" result="flowScope.client"></evaluate>
<evaluate expression="integration.getRecords()" result="flowScope.records"></evaluate>
</on-entry>
<evaluate expression="integration.getHashBatchRecordsBalance()" result="flowScope.hashBatchRecordsBalance"></evaluate>
<transition to="fileUploadCompleteState"></transition>
<exception-handler bean="flowExceptionResolver"/>
</action-state>
<view-state id="errorRecordsState" view="fileupload/errorRecords">
<!-- <attribute name="errorRecords" value="errorRecords"></attribute>-->
<transition on="continue" to="hashBatchValidationState"/>
<transition on="cancel" to="canceledFileUploadState"/>
<exception-handler bean="flowExceptionResolver"/>
</view-state>
<view-state id="fileUploadCompleteState" view="fileupload/fileupload.complete">
<on-entry>
<evaluate expression="processTransactionService.setClientChecksum(records,checkSum,client,branch,hashBatchRecordsBalance,fileUploadCommand)" result="flowScope.clientFile"></evaluate>
<evaluate expression="processTransactionService.persistAll(client,clientFile, fileUploadCommand.file)" ></evaluate>
<evaluate expression="cfmletter.letter(fileUploadCommand,client,hashBatchRecordsBalance,branchName, errorRecords)" result="flowScope.dsbByteArrayOutputStream"></evaluate>
<evaluate expression="confirmationLetterFlowController.fill(dsbByteArrayOutputStream,clientFile.id)"></evaluate>
<evaluate expression="fileCopyService.copyFile(fileUploadCommand,clientFile.id, extension)" result="flowScope.copyMessages"></evaluate>
</on-entry>
<transition on="continue" to="letterState">
</transition>
<!-- <exception-handler bean="flowExceptionResolver"/> -->
</view-state>
<view-state id="letterState" view="externalRedirect:contextRelative:/fileupload/bevestiging.htm">
<exception-handler bean="flowExceptionResolver"/>
</view-state>
thread safety in webflow
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Originally Posted by mdeinum
