org.dspace.app.webui.submit
Class JSPStep

java.lang.Object
  org.dspace.app.webui.submit.JSPStep

Direct Known Subclasses:

JSPCCLicenseStep, JSPCompleteStep, JSPDescribeStep, JSPInitialQuestionsStep, JSPLicenseStep, JSPSampleStep, JSPSelectCollectionStep, JSPUploadStep, JSPVerifyStep

public abstract class JSPStep
extends Object

Abstract 'binding' class for DSpace Submission Steps which use the JSP-UI.

These methods revolve around the following: (1) pre-processing of data to prepare for display, (2) displaying the JSP, and (3) post-processing of any user input (or alternatively backend processing, for non-interactive steps).

For the JSP UI, the job of this class is to maintain the context of where the user is within the current "step" of the submission process. Each "step" can consist of multiple "pages" (which roughly correspond to HTML displays), so this class helps manage which page the user should see next.

The methods of the JSPStepManager are called in this order:

• Call doPreProcessing() method
• If showJSP() was specified from doPreProcessing(), then the JSP specified will be displayed
• If showJSP() was not specified from doPreProcessing(), then the doProcessing() method is called an the step completes immediately
• Call doProcessing() method on appropriate AbstractProcessingStep after the user returns from the JSP, in order to process the user input
• Call doPostProcessing() method to determine if more user interaction is required, and if further JSPs need to be called.
• If there are more "pages" in this step then, the process begins again (for the new page).
• Once all pages are complete, control is forwarded back to the SubmissionController, and the next step is called.

Version:

$Revision$

Author:

Tim Donohue

See Also:

AbstractProcessingStep, SubmissionController, SubmissionConfig, SubmissionStepConfig

Field Summary

static String

NO_JSP Value to return from doPreProcessing to specify not to load any JSP Page (equal to "") *

Constructor Summary

JSPStep()

Method Summary

abstract void	doPostProcessing(Context context, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, SubmissionInfo subInfo, int status) Do any post-processing after the step's backend processing occurred (in the doProcessing() method).
abstract void	doPreProcessing(Context context, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, SubmissionInfo subInfo) Do any pre-processing to determine which JSP (if any) is used to generate the UI for this step.
abstract String	getReviewJSP(Context context, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, SubmissionInfo subInfo) Return the URL path (e.g.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NO_JSP

public static final String NO_JSP

Value to return from doPreProcessing to specify not to load any JSP Page (equal to "") *

See Also:

Constant Field Values

Constructor Detail

JSPStep

public JSPStep()

Method Detail

doPreProcessing

public abstract void doPreProcessing(Context context,
                                     javax.servlet.http.HttpServletRequest request,
                                     javax.servlet.http.HttpServletResponse response,
                                     SubmissionInfo subInfo)
                              throws javax.servlet.ServletException,
                                     IOException,
                                     SQLException,
                                     AuthorizeException

Do any pre-processing to determine which JSP (if any) is used to generate the UI for this step. This method should include the gathering and validating of all data required by the JSP. In addition, if the JSP requires any variable to passed to it on the Request, this method should set those variables.

If this step requires user interaction, then this method must call the JSP to display, using the "showJSP()" method of the JSPStepManager class.

If this step doesn't require user interaction OR you are solely using Manakin for your user interface, then this method may be left EMPTY, since all step processing should occur in the doProcessing() method.

Parameters:

context - current DSpace context

request - current servlet request object

response - current servlet response object

subInfo - submission info object

Throws:

javax.servlet.ServletException

IOException

SQLException

AuthorizeException

doPostProcessing

public abstract void doPostProcessing(Context context,
                                      javax.servlet.http.HttpServletRequest request,
                                      javax.servlet.http.HttpServletResponse response,
                                      SubmissionInfo subInfo,
                                      int status)
                               throws javax.servlet.ServletException,
                                      IOException,
                                      SQLException,
                                      AuthorizeException

Do any post-processing after the step's backend processing occurred (in the doProcessing() method).

It is this method's job to determine whether processing completed successfully, or display another JSP informing the users of any potential problems/errors.

If this step doesn't require user interaction OR you are solely using Manakin for your user interface, then this method may be left EMPTY, since all step processing should occur in the doProcessing() method.

Parameters:

context - current DSpace context

request - current servlet request object

response - current servlet response object

subInfo - submission info object

status - any status/errors reported by doProcessing() method

Throws:

javax.servlet.ServletException

IOException

SQLException

AuthorizeException

getReviewJSP

public abstract String getReviewJSP(Context context,
                                    javax.servlet.http.HttpServletRequest request,
                                    javax.servlet.http.HttpServletResponse response,
                                    SubmissionInfo subInfo)

Return the URL path (e.g. /submit/review-metadata.jsp) of the JSP which will review the information that was gathered in this Step.

This Review JSP is loaded by the 'Verify' Step, in order to dynamically generate a submission verification page consisting of the information gathered in all the enabled submission steps.

Parameters:

context - current DSpace context

request - current servlet request object

response - current servlet response object

subInfo - submission info object