public void save()

in mailreader-chain/src/java/org/apache/struts/webapp/example/memory/MemoryUserDatabase.java [215:294]
61 lines of code
11 McCabe index (conditional complexity)

    public void save() throws Exception {

        if (log.isDebugEnabled()) {
            log.debug("Saving database to '" + pathname + "'");
        }
        File fileNew = new File(pathnameNew);
        PrintWriter writer = null;

        try {

            // Configure our PrintWriter
            FileOutputStream fos = new FileOutputStream(fileNew);
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            writer = new PrintWriter(osw);

            // Print the file prolog
            writer.println("<?xml version='1.0'?>");
            writer.println("<database>");

            // Print entries for each defined user and associated subscriptions
            User users[] = findUsers();
            for (int i = 0; i < users.length; i++) {
                writer.print("  ");
                writer.println(users[i]);
                Subscription subscriptions[] =
                        users[i].getSubscriptions();
                for (int j = 0; j < subscriptions.length; j++) {
                    writer.print("    ");
                    writer.println(subscriptions[j]);
                    writer.print("    ");
                    writer.println("</subscription>");
                }
                writer.print("  ");
                writer.println("</user>");
            }

            // Print the file epilog
            writer.println("</database>");

            // Check for errors that occurred while printing
            if (writer.checkError()) {
                writer.close();
                fileNew.delete();
                throw new IOException
                        ("Saving database to '" + pathname + "'");
            }
            writer.close();
            writer = null;

        } catch (IOException e) {

            if (writer != null) {
                writer.close();
            }
            fileNew.delete();
            throw e;

        }


        // Perform the required renames to permanently save this file
        File fileOrig = new File(pathname);
        File fileOld = new File(pathnameOld);
        if (fileOrig.exists()) {
            fileOld.delete();
            if (!fileOrig.renameTo(fileOld)) {
                throw new IOException
                        ("Renaming '" + pathname + "' to '" + pathnameOld + "'");
            }
        }
        if (!fileNew.renameTo(fileOrig)) {
            if (fileOld.exists()) {
                fileOld.renameTo(fileOrig);
            }
            throw new IOException
                    ("Renaming '" + pathnameNew + "' to '" + pathname + "'");
        }
        fileOld.delete();

    }