BrowserServlet.java from DSpace at Krugle
Show BrowserServlet.java syntax highlighted
/*
* BrowserServlet.java
*
* Version: $Revision: $
*
* Date: $Date: $
*
* Copyright (c) 2002-2007, 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.servlet;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Map;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.dspace.app.webui.util.JSPManager;
import org.dspace.authorize.AuthorizeException;
import org.dspace.browse.BrowseException;
import org.dspace.browse.BrowserScope;
import org.dspace.core.Context;
/**
* Servlet for browsing through indices, as they are defined in
* the configuration. This class can take a wide variety of inputs from
* the user interface:
*
* - type: the type of browse (index name) being performed
* - order: (ASC | DESC) the direction for result sorting
* - value: A specific value to find items around. For example the author name or subject
* - month: integer specification of the month of a date browse
* - year: integer specification of the year of a date browse
* - starts_with: string value at which to start browsing
* - vfocus: start browsing with a value of this string
* - focus: integer id of the item at which to start browsing
* - rpp: integer number of results per page to display
* - sort_by: integer specification of the field to search on
* - etal: integer number to limit multiple value items specified in config to
*
* @author Richard Jones
* @version $Revision: $
*/
public class BrowserServlet extends AbstractBrowserServlet
{
/**
* Do the usual DSpace GET method. You will notice that browse does not currently
* respond to POST requests.
*/
protected void doDSGet(Context context, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, SQLException,
AuthorizeException
{
// all browse requests currently come to GET.
BrowserScope scope = getBrowserScopeForRequest(context, request, response);
if (scope.getBrowseIndex() == null)
{
throw new ServletException("There is no browse index for the request");
}
// execute browse request
processBrowse(context, scope, request, response);
}
/**
* Display the error page
*
* @param context
* @param request
* @param response
* @throws ServletException
* @throws IOException
* @throws SQLException
* @throws AuthorizeException
*/
protected void showError(Context context, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, SQLException,
AuthorizeException
{
JSPManager.showJSP(request, response, "/browse/error.jsp");
}
/**
* Display the No Results page
*
* @param context
* @param request
* @param response
* @throws ServletException
* @throws IOException
* @throws SQLException
* @throws AuthorizeException
*/
protected void showNoResultsPage(Context context, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, SQLException,
AuthorizeException
{
JSPManager.showJSP(request, response, "/browse/no-results.jsp");
}
/**
* Display the single page. This is the page which lists just the single values of a
* metadata browse, not individual items. Single values are links through to all the items
* that match that metadata value
*
* @param context
* @param request
* @param response
* @throws ServletException
* @throws IOException
* @throws SQLException
* @throws AuthorizeException
*/
protected void showSinglePage(Context context, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, SQLException,
AuthorizeException
{
JSPManager.showJSP(request, response, "/browse/single.jsp");
}
/**
* Display a full item listing.
*
* @param context
* @param request
* @param response
* @throws ServletException
* @throws IOException
* @throws SQLException
* @throws AuthorizeException
*/
protected void showFullPage(Context context, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, SQLException,
AuthorizeException
{
JSPManager.showJSP(request, response, "/browse/full.jsp");
}
}
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