editcommunitiesservlet.java

dspace 用j2ee架构的一个数字图书馆.开源程序

        String intro = request.getParameter("introductory_text");

        if (intro.equals(""))
        {
            intro = null;
        }

        String copy = request.getParameter("copyright_text");

        if (copy.equals(""))
        {
            copy = null;
        }

        String side = request.getParameter("side_bar_text");

        if (side.equals(""))
        {
            side = null;
        }

        community.setMetadata("introductory_text", intro);
        community.setMetadata("copyright_text", copy);
        community.setMetadata("side_bar_text", side);
        community.update();

        // Which button was pressed?
        String button = UIUtil.getSubmitButton(request, "submit");

        if (button.equals("submit_set_logo"))
        {
            // Change the logo - delete any that might be there first
            community.setLogo(null);
            community.update();

            // Display "upload logo" page. Necessary attributes already set by
            // doDSPost()
            JSPManager.showJSP(request, response,
                    "/dspace-admin/upload-logo.jsp");
        }
        else if (button.equals("submit_delete_logo"))
        {
            // Simply delete logo
            community.setLogo(null);
            community.update();

            // Show edit page again - attributes set in doDSPost()
            JSPManager.showJSP(request, response, "/tools/edit-community.jsp");
        }
        else if (button.equals("submit_authorization_edit"))
        {
            // Forward to policy edit page
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/dspace-admin/authorize?community_id="
                    + community.getID() + "&submit_community_select=1"));
        }
        else
        {
            // Button at bottom clicked - show main control page
            showControls(context, request, response);
        }

        // Commit changes to DB
        context.complete();
    }

    /**
     * Create/update collection metadata from a posted form
     * 
     * @param context
     *            DSpace context
     * @param request
     *            the HTTP request containing posted info
     * @param response
     *            the HTTP response
     * @param community
     *            the community the collection is in
     * @param collection
     *            the collection to update (or null for creation)
     */
    private void processConfirmEditCollection(Context context,
            HttpServletRequest request, HttpServletResponse response,
            Community community, Collection collection)
            throws ServletException, IOException, SQLException,
            AuthorizeException
    {
        if (request.getParameter("create").equals("true"))
        {
            // We need to create a new community
            collection = community.createCollection();
            request.setAttribute("collection", collection);
        }

        // Update the basic metadata
        collection.setMetadata("name", request.getParameter("name"));
        collection.setMetadata("short_description", request
                .getParameter("short_description"));

        String intro = request.getParameter("introductory_text");

        if (intro.equals(""))
        {
            intro = null;
        }

        String copy = request.getParameter("copyright_text");

        if (copy.equals(""))
        {
            copy = null;
        }

        String side = request.getParameter("side_bar_text");

        if (side.equals(""))
        {
            side = null;
        }

        String license = request.getParameter("license");

        if (license.equals(""))
        {
            license = null;
        }

        String provenance = request.getParameter("provenance_description");

        if (provenance.equals(""))
        {
            provenance = null;
        }

        collection.setMetadata("introductory_text", intro);
        collection.setMetadata("copyright_text", copy);
        collection.setMetadata("side_bar_text", side);
        collection.setMetadata("license", license);
        collection.setMetadata("provenance_description", provenance);

        // Which button was pressed?
        String button = UIUtil.getSubmitButton(request, "submit");

        if (button.equals("submit_set_logo"))
        {
            // Change the logo - delete any that might be there first
            collection.setLogo(null);

            // Display "upload logo" page. Necessary attributes already set by
            // doDSPost()
            JSPManager.showJSP(request, response,
                    "/dspace-admin/upload-logo.jsp");
        }
        else if (button.equals("submit_delete_logo"))
        {
            // Simply delete logo
            collection.setLogo(null);

            // Show edit page again - attributes set in doDSPost()
            JSPManager.showJSP(request, response, "/tools/edit-collection.jsp");
        }
        else if (button.startsWith("submit_wf_create_"))
        {
            int step = Integer.parseInt(button.substring(17));

            // Create new group
            Group newGroup = Group.create(context);
            newGroup.setName("COLLECTION_" + collection.getID() + "_WFSTEP_"
                    + step);
            newGroup.update();
            collection.setWorkflowGroup(step, newGroup);
            collection.update();

            // Forward to group edit page
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/group-edit?group_id=" + newGroup.getID()));
        }
        else if (button.equals("submit_admins_create"))
        {
            // Create new group
            Group newGroup = collection.createAdministrators();

            // Forward to group edit page
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/group-edit?group_id=" + newGroup.getID()));
        }
        else if (button.equals("submit_submitters_create"))
        {
            // Create new group
            Group newGroup = collection.createSubmitters();

            // Forward to group edit page
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/group-edit?group_id=" + newGroup.getID()));
        }
        else if (button.equals("submit_authorization_edit"))
        {
            // Forward to policy edit page
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/dspace-admin/authorize?collection_id="
                    + collection.getID() + "&submit_collection_select=1"));
        }
        else if (button.startsWith("submit_wf_edit_"))
        {
            int step = Integer.parseInt(button.substring(15));

            // Edit workflow group
            Group g = collection.getWorkflowGroup(step);
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/group-edit?group_id=" + g.getID()));
        }
        else if (button.equals("submit_submitters_edit"))
        {
            // Edit submitters group
            Group g = collection.getSubmitters();
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/group-edit?group_id=" + g.getID()));
        }
        else if (button.equals("submit_admins_edit"))
        {
            // Edit 'collection administrators' group
            Group g = collection.getAdministrators();
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/group-edit?group_id=" + g.getID()));
        }
        else if (button.startsWith("submit_wf_delete_"))
        {
            // Delete workflow group
            int step = Integer.parseInt(button.substring(17));

            Group g = collection.getWorkflowGroup(step);
            collection.setWorkflowGroup(step, null);

            // Have to update to avoid ref. integrity error
            collection.update();
            g.delete();

            // Show edit page again - attributes set in doDSPost()
            JSPManager.showJSP(request, response, "/tools/edit-collection.jsp");
        }
        else if (button.equals("submit_create_template"))
        {
            // Create a template item
            collection.createTemplateItem();

            // Forward to edit page for new template item
            Item i = collection.getTemplateItem();
            i.setOwningCollection(collection);

            // have to update to avoid ref. integrity error
            i.update();
            collection.update();
            context.complete();
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/edit-item?item_id=" + i.getID()));

            return;
        }
        else if (button.equals("submit_edit_template"))
        {
            // Forward to edit page for template item
            Item i = collection.getTemplateItem();
            response.sendRedirect(response.encodeRedirectURL(request
                    .getContextPath()
                    + "/tools/edit-item?item_id=" + i.getID()));
        }
        else if (button.equals("submit_delete_template"))
        {
            collection.removeTemplateItem();

            // Show edit page again - attributes set in doDSPost()
            JSPManager.showJSP(request, response, "/tools/edit-collection.jsp");
        }
        else
        {
            // Plain old "create/update" button pressed - go back to main page
            showControls(context, request, response);
        }

        // Commit changes to DB
        collection.update();
        context.complete();
    }

    /**
     * Process the input from the upload logo page
     * 
     * @param context
     *            current DSpace context
     * @param request
     *            current servlet request object
     * @param response
     *            current servlet response object
     */
    private void processUploadLogo(Context context, HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException,
            SQLException, AuthorizeException
    {
        // Wrap multipart request to get the submission info
        FileUploadRequest wrapper = new FileUploadRequest(request);

        Community community = Community.find(context, UIUtil.getIntParameter(
                wrapper, "community_id"));
        Collection collection = Collection.find(context, UIUtil
                .getIntParameter(wrapper, "collection_id"));

        File temp = wrapper.getFile("file");

        // Read the temp file as logo
        InputStream is = new BufferedInputStream(new FileInputStream(temp));
        Bitstream logoBS;

        if (collection == null)
        {
            logoBS = community.setLogo(is);
        }
        else
        {
            logoBS = collection.setLogo(is);
        }

        // Strip all but the last filename. It would be nice
        // to know which OS the file came from.
        String noPath = wrapper.getFilesystemName("file");

        while (noPath.indexOf('/') > -1)
        {
            noPath = noPath.substring(noPath.indexOf('/') + 1);
        }

        while (noPath.indexOf('\\') > -1)
        {
            noPath = noPath.substring(noPath.indexOf('\\') + 1);
        }

        logoBS.setName(noPath);
        logoBS.setSource(wrapper.getFilesystemName("file"));

        // Identify the format
        BitstreamFormat bf = FormatIdentifier.guessFormat(context, logoBS);
        logoBS.setFormat(bf);
        AuthorizeManager.addPolicy(context, logoBS, Constants.WRITE, context
                .getCurrentUser());
        logoBS.update();

        if (AuthorizeManager.isAdmin(context))
        {
            // set a variable to show all buttons
            request.setAttribute("admin_button", new Boolean(true));
        }

        if (collection == null)
        {
            community.update();

            // Show community edit page
            request.setAttribute("community", community);
            JSPManager.showJSP(request, response, "/tools/edit-community.jsp");
        }
        else
        {
            collection.update();

            // Show collection edit page
            request.setAttribute("collection", collection);
            request.setAttribute("community", community);
            JSPManager.showJSP(request, response, "/tools/edit-collection.jsp");
        }

        // Remove temp file
        temp.delete();

        // Update DB
        context.complete();
    }
}