JSPLicenseStep.java from DSpace at Krugle
Show JSPLicenseStep.java syntax highlighted
/*
* JSPLicenseStep.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.SubmissionInfo;
import org.dspace.app.util.Util;
import org.dspace.app.webui.servlet.SubmissionController;
import org.dspace.app.webui.submit.JSPStep;
import org.dspace.app.webui.submit.JSPStepManager;
import org.dspace.app.webui.util.JSPManager;
import org.dspace.authorize.AuthorizeException;
import org.dspace.content.Collection;
import org.dspace.content.Item;
import org.dspace.content.WorkspaceItem;
import org.dspace.core.Context;
import org.dspace.core.LogManager;
import org.dspace.license.CreativeCommons;
import org.dspace.submit.step.LicenseStep;
/**
* License servlet for DSpace. Presents the user with license information
* required for all items submitted into DSpace.
* <P>
* This JSPStepManager class works with the SubmissionController servlet
* for the JSP-UI
* <P>
* 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.LicenseStep
*
* @author Tim Donohue
* @version $Revision$
*/
public class JSPLicenseStep extends LicenseStep implements JSPStep
{
/** JSP which displays default license information * */
private static final String LICENSE_JSP = "/submit/show-license.jsp";
/** JSP which displays Creative Commons license information * */
private static final String CC_LICENSE_JSP = "/submit/creative-commons.jsp";
/** JSP which displays information after a license is rejected * */
private static final String LICENSE_REJECT_JSP = "/submit/license-rejected.jsp";
/** log4j logger */
private static Logger log = Logger.getLogger(JSPLicenseStep.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
{
// if creative commons licensing is enabled, then it is page #1
if (CreativeCommons.isEnabled() && getCurrentPage(request) == 1)
{
showCCLicense(context, request, response, subInfo);
}
else
// otherwise load default DSpace license agreement
{
showLicense(context, request, response, subInfo);
}
}
/**
* Do any post-processing after the step's backend processing occurred (in
* the doProcessing() method).
* <P>
* It is this method's job to determine whether processing completed
* successfully, or display another JSP informing the users of any potential
* problems/errors.
* <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
{
String buttonPressed = Util.getSubmitButton(request, CANCEL_BUTTON);
// JSP-UI Specific (only JSP UI has a "reject" button):
// License was explicitly rejected
if (buttonPressed.equals("submit_reject"))
{
// User has rejected license.
log.info(LogManager.getHeader(context, "reject_license",
subInfo.getSubmissionLogInfo()));
// If the license page was the 1st page in the Submission process,
// then delete the submission if they reject the license!
if (!subInfo.isInWorkflow()
&& (SubmissionController.getStepReached(subInfo) <= SubmissionController.FIRST_STEP))
{
WorkspaceItem wi = (WorkspaceItem) subInfo.getSubmissionItem();
wi.deleteAll();
// commit changes
context.commit();
}
// Show the license rejected page
JSPManager.showJSP(request, response, LICENSE_REJECT_JSP);
}
}
/**
* Show the DSpace license page 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 showLicense(Context context, HttpServletRequest request,
HttpServletResponse response, SubmissionInfo subInfo)
throws SQLException, ServletException, IOException
{
// determine collection & get license
Collection c = subInfo.getSubmissionItem().getCollection();
request.setAttribute("license", c.getLicense());
JSPStepManager.showJSP(request, response, subInfo, LICENSE_JSP);
}
/**
* Show the Creative Commons license page 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 showCCLicense(Context context, HttpServletRequest request,
HttpServletResponse response, SubmissionInfo subInfo)
throws SQLException, ServletException, IOException
{
// Do we already have a CC license?
Item item = subInfo.getSubmissionItem().getItem();
boolean exists = CreativeCommons.hasLicense(context, item);
request.setAttribute("cclicense.exists", new Boolean(exists));
JSPStepManager.showJSP(request, response, subInfo, CC_LICENSE_JSP);
}
}
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