JSPInitialQuestionsStep.java from DSpace at Krugle
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/*
* JSPInitialQuestionsStep.java
*
* Version: $Revision$
*
* Date: $Date$
*
* Copyright (c) 2002-2005, Hewlett-Packard Company and Massachusetts
* Institute of Technology. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Hewlett-Packard Company nor the name of the
* Massachusetts Institute of Technology nor the names of their
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
package org.dspace.app.webui.submit.step;
import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.dspace.app.util.DCInputsReader;
import org.dspace.app.util.SubmissionInfo;
import org.dspace.app.webui.submit.JSPStep;
import org.dspace.app.webui.submit.JSPStepManager;
import org.dspace.app.webui.util.UIUtil;
import org.dspace.authorize.AuthorizeException;
import org.dspace.content.Collection;
import org.dspace.core.Context;
import org.dspace.submit.step.InitialQuestionsStep;
/**
* Initial Submission servlet for DSpace. Handles the initial questions which
* are asked to users to gather information regarding what metadata needs to be
* gathered.
* <P>
* This JSPStepManager class works with the SubmissionController servlet
* for the JSP-UI
*
* The following methods are called in this order:
* <ul>
* <li>Call doPreProcessing() method</li>
* <li>If showJSP() was specified from doPreProcessing(), then the JSP
* specified will be displayed</li>
* <li>If showJSP() was not specified from doPreProcessing(), then the
* doProcessing() method is called an the step completes immediately</li>
* <li>Call doProcessing() method after the user returns from the JSP, in order
* to process the user input</li>
* <li>Call doPostProcessing() method to determine if more user interaction is
* required, and if further JSPs need to be called.</li>
* <li>If there are more "pages" in this step then, the process begins again
* (for the new page).</li>
* <li>Once all pages are complete, control is forwarded back to the
* SubmissionController, and the next step is called.</li>
* </ul>
*
* @see org.dspace.app.webui.servlet.SubmissionController
* @see org.dspace.app.webui.submit.JSPStep
* @see org.dspace.submit.step.InitialQuestionsStep
*
* @author Tim Donohue
* @version $Revision$
*/
public class JSPInitialQuestionsStep extends InitialQuestionsStep implements JSPStep
{
/** JSP which displays initial questions * */
private static final String INITIAL_QUESTIONS_JSP = "/submit/initial-questions.jsp";
/** JSP which verifies users wants to change answers * */
private static final String VERIFY_PRUNE_JSP = "/submit/verify-prune.jsp";
/** JSP which tells the user that theses are not allowed * */
private static final String NO_THESES_JSP = "/submit/no-theses.jsp";
/** log4j logger */
private static Logger log = Logger.getLogger(JSPInitialQuestionsStep.class);
/**
* 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.
* <P>
* If this step requires user interaction, then this method must call the
* JSP to display, using the "showJSP()" method of the JSPStepManager class.
* <P>
* 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.
*
* @param context
* current DSpace context
* @param request
* current servlet request object
* @param response
* current servlet response object
* @param subInfo
* submission info object
*/
public void doPreProcessing(Context context, HttpServletRequest request,
HttpServletResponse response, SubmissionInfo subInfo)
throws ServletException, IOException, SQLException,
AuthorizeException
{
// prepare & show the initial questions page, by default
showInitialQuestions(context, request, response, subInfo);
}
/**
* 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.
* <P>
* If this step requires user interaction, then this method must call the
* JSP to display, using the "showJSP()" method of the JSPStepManager class.
* <P>
* 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.
*
* @param context
* current DSpace context
* @param request
* current servlet request object
* @param response
* current servlet response object
* @param subInfo
* submission info object
* @param status
* any status/errors reported by doProcessing() method
*/
public void doPostProcessing(Context context, HttpServletRequest request,
HttpServletResponse response, SubmissionInfo subInfo, int status)
throws ServletException, IOException, SQLException,
AuthorizeException
{
// Get the values from the initial questions form
boolean multipleTitles = UIUtil.getBoolParameter(request,
"multiple_titles");
boolean publishedBefore = UIUtil.getBoolParameter(request,
"published_before");
boolean multipleFiles = UIUtil.getBoolParameter(request,
"multiple_files");
// If we actually came from the "verify prune" page,
// then prune any excess data.
if (JSPStepManager.getLastJSPDisplayed(request).equals(VERIFY_PRUNE_JSP))
{
if (status == STATUS_CANCEL_PRUNE)
{
// User cancelled pruning (show initial questions again)
showInitialQuestions(context, request, response, subInfo);
return;
}
}
else
// Otherwise, if just coming from "initial questions" page
{
if (status == STATUS_THESIS_REJECTED)
{
// Display no-theses JSP to user
JSPStepManager.showJSP(request, response, subInfo, NO_THESES_JSP);
return;
}
// If anything is going to be removed from the item as a result
// of changing the answer to one of the questions, we need
// to inform the user and make sure that's OK
if (status == STATUS_VERIFY_PRUNE)
{
showVerifyPrune(context, request, response, subInfo,
multipleTitles, publishedBefore, multipleFiles);
return;
}
}
}
/**
* Show the page which displays all the Initial Questions to the user
*
* @param context
* current DSpace context
* @param request
* the request object
* @param response
* the response object
* @param subInfo
* the SubmissionInfo object
*
*/
private void showInitialQuestions(Context context,
HttpServletRequest request, HttpServletResponse response,
SubmissionInfo subInfo) throws SQLException, ServletException,
IOException
{
// determine collection
Collection c = subInfo.getSubmissionItem().getCollection();
// read configurable submissions forms data
DCInputsReader inputsReader = new DCInputsReader();
// load the proper submission inputs to be used by the JSP
request.setAttribute("submission.inputs", inputsReader.getInputs(c
.getHandle()));
// forward to initial questions JSP
JSPStepManager.showJSP(request, response, subInfo, INITIAL_QUESTIONS_JSP);
}
/**
* Show the page which warns the user that by changing the answer to one of
* these questions, some previous data may be deleted.
*
* @param context
* current DSpace context
* @param request
* the request object
* @param response
* the response object
* @param subInfo
* the SubmissionInfo object
* @param multipleTitles
* if there is multiple titles
* @param publishedBefore
* if published before
* @param multipleFiles
* if there will be multiple files
* @param willRemoveTitles
* if a title needs to be removed
* @param willRemoveDate
* if a date needs to be removed
* @param willRemoveFiles
* if one or more files need to be removed
*/
private void showVerifyPrune(Context context, HttpServletRequest request,
HttpServletResponse response, SubmissionInfo subInfo,
boolean multipleTitles, boolean publishedBefore,
boolean multipleFiles) throws SQLException, ServletException,
IOException
{
// Verify pruning of extra bits
request.setAttribute("multiple.titles", new Boolean(multipleTitles));
request.setAttribute("published.before", new Boolean(publishedBefore));
request.setAttribute("multiple.files", new Boolean(multipleFiles));
request.setAttribute("will.remove.titles",
new Boolean(willRemoveTitles));
request.setAttribute("will.remove.date", new Boolean(willRemoveDate));
request.setAttribute("will.remove.files", new Boolean(willRemoveFiles));
request.setAttribute("button.pressed", UIUtil.getSubmitButton(request,
NEXT_BUTTON));
// forward to verify prune JSP
// forward to initial questions JSP
JSPStepManager.showJSP(request, response, subInfo, VERIFY_PRUNE_JSP);
}
}
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