protected DSpaceObject resolveHandle(String handle) {
DSpaceObject dso = null;
try {
dso = handleService.resolveToObject(this.context, handle);
} catch (SQLException ex) {
log.error(ex);
System.err.println(
"A problem with the database connection " + "occurred. Canceled pending actions.");
System.err.println(ex.getMessage());
ex.printStackTrace(System.err);
System.exit(1);
} catch (IllegalStateException ex) {
log.error(ex);
System.err.println("Cannot recognize identifier '" + handle + "', skipping.");
return null;
}
if (dso == null) {
System.err.println("Cannot resolve identifier '" + handle + "', skipping.");
log.debug("Couldn't resolve identifier '" + handle + "', dso was null.");
return null;
}
if (dso.getType() != Constants.SITE
&& dso.getType() != Constants.COMMUNITY
&& dso.getType() != Constants.COLLECTION
&& dso.getType() != Constants.ITEM) {
System.err.println(
contentServiceFactory.getDSpaceObjectService(dso).getTypeText(dso)
+ " are currently not "
+ "supported as independent entities. Bundles and Bitstreams "
+ "should be processed as part of their item.");
return null;
}
return dso;
}
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// we expect a path in the form /resource/<prefix>/<suffix>.
String pathInfo = request.getPathInfo();
log.debug("Pathinfo: " + pathInfo);
if (StringUtils.isEmpty(pathInfo) || StringUtils.countMatches(pathInfo, "/") < 2) {
log.debug("Path does not contain the expected number of slashes.");
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
// remove trailing slash of the path info and split it.
String[] path = request.getPathInfo().substring(1).split("/");
String handle = path[0] + "/" + path[1];
String dspaceURL = (new DSpace()).getConfigurationService().getProperty("dspace.url");
// Prepare content negotiation
int requestedMimeType = Negotiator.negotiate(request.getHeader(ACCEPT_HEADER_NAME));
Context context = null;
DSpaceObject dso = null;
try {
context = new Context(Context.READ_ONLY);
dso = handleService.resolveToObject(context, handle);
} catch (SQLException ex) {
log.error("SQLException: " + ex.getMessage(), ex);
context.abort();
// probably a problem with the db connection => send Service Unavailable
response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
return;
} catch (IllegalStateException ex) {
log.error(
"Cannot resolve handle " + handle + ". IllegalStateException:" + ex.getMessage(), ex);
context.abort();
response.sendError(HttpServletResponse.SC_BAD_REQUEST);
return;
}
if (dso == null) {
log.info("Cannot resolve handle '" + handle + "' to dso. => 404");
context.abort();
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
// close the context and send forward.
context.abort();
Negotiator.sendRedirect(response, handle, "", requestedMimeType, true);
}
