private Map loadSerialized()

in src/java/org/apache/fulcrum/intake/IntakeServiceImpl.java [197:312]
94 lines of code
16 McCabe index (conditional complexity)

    private Map<AppData, File> loadSerialized(String serialDataPath, long timeStamp)
    {
        getLogger().debug(
                "Entered loadSerialized(" + serialDataPath + ", " + timeStamp
                        + ")");

        long timer = System.currentTimeMillis();

        if (serialDataPath == null)
        {
            return null;
        }

        File serialDataFile = new File(serialDataPath);

        if (!serialDataFile.exists())
        {
            getLogger().info("No serialized file found, parsing XML");
            return null;
        }

        if (serialDataFile.lastModified() <= timeStamp)
        {
            getLogger().info("serialized file too old, parsing XML");
            return null;
        }

        ObjectInputStream in = null;
        Map<AppData, File> serialData = null;

        try
        {
        	FileInputStream fin = new FileInputStream(serialDataFile);
            in = new ObjectInputStream(fin);
            Object o = in.readObject();

            if (o instanceof Map)
            {
                @SuppressWarnings("unchecked") // checked with instanceof
				Map<AppData, File> map = (Map<AppData, File>) o;
				serialData = map;
            }
            else
            {
                // This could be old file from intake. Try to delete it
                getLogger().info("serialized object is not an intake map, ignoring");
                in.close();
                in = null;
                
                // Try to delete the file
                boolean result = serialDataFile.delete();
                if ( result == false )
                {
                	getLogger().error("Unknown serialized file could not be removed");
                }
            }
        }
        catch (IOException e)
        {
            getLogger().error("Serialized File could not be read.", e);

            // We got a corrupt file for some reason.
            // Null out serialData to be sure
            serialData = null;
        }
        catch (ClassNotFoundException e)
        {
            getLogger().error("Objects could not be read from serialized file.", e);

            // This should not happen
            // Null out serialData to be sure
            serialData = null;
        }
        finally
        {
            // Could be null if we opened a file, didn't find it to be a
            // Map object and then nuked it away.
            try
            {
                if (in != null)
                {
                    in.close();
                }
            }
            catch (IOException e)
            {
                getLogger().error("Exception while closing file", e);
            }
        }

        // Recreate transient loggers
        if (serialData != null)
        {
        	for (AppData appData : serialData.keySet())
        	{
        		for (Group group : appData.getGroups())
        		{
        			if (group instanceof LogEnabled)
        			{
        				((LogEnabled)group).enableLogging(getLogger());
        			}

    				for (Field<?> field : group.getFields())
    				{
            			if (field instanceof LogEnabled)
            			{
            				((LogEnabled)field).enableLogging(getLogger());
            			}
    				}
        		}
        	}
        }
        getLogger().info("Loaded serialized map object, ignoring XML");
        getLogger().debug("Loading took " + (System.currentTimeMillis() - timer));
        return serialData;
    }