public boolean process()

in velocity-engine-core/src/main/java/org/apache/velocity/Template.java [107:199]
61 lines of code
8 McCabe index (conditional complexity)

    public boolean process()
        throws ResourceNotFoundException, ParseErrorException
    {
        data = null;
        Reader reader = null;
        errorCondition = null;

        /*
         *  first, try to get the stream from the loader
         */
        try
        {
            reader = resourceLoader.getResourceReader(name, getEncoding());
        }
        catch( ResourceNotFoundException rnfe )
        {
            /*
             *  remember and re-throw
             */

            errorCondition = rnfe;
            throw rnfe;
        }

        /*
         *  if that worked, lets protect in case a loader impl
         *  forgets to throw a proper exception
         */

        if (reader != null)
        {
            /*
             *  now parse the template
             */

            try
            {
                BufferedReader br = new BufferedReader( reader );
                data = rsvc.parse( br, this);
                initDocument();
                return true;
            }
            catch ( ParseException pex )
            {
                /*
                 *  remember the error and convert
                 */
                errorCondition =  new ParseErrorException(pex, name);
                throw errorCondition;
            }
            catch ( TemplateInitException pex )
            {
                errorCondition = new ParseErrorException( pex, name);
                throw errorCondition;
            }
            /*
             * pass through runtime exceptions
             */
            catch( RuntimeException e )
            {
                errorCondition = new VelocityException("Exception thrown processing Template "
                    +getName(), e, rsvc.getLogContext().getStackTrace());
                throw errorCondition;
            }
            finally
            {
                /*
                 *  Make sure to close the inputstream when we are done.
                 */
                try
                {
                    reader.close();
                }
                catch(IOException e)
                {
                    // If we are already throwing an exception then we want the original
                    // exception to be continued to be thrown, otherwise, throw a new Exception.
                    if (errorCondition == null)
                    {
                         throw new VelocityException(e, rsvc.getLogContext().getStackTrace());
                    }
                }
            }
        }
        else
        {
            /*
             *  is == null, therefore we have some kind of file issue
             */
            errorCondition = new ResourceNotFoundException("Unknown resource error for resource " + name, null, rsvc.getLogContext().getStackTrace() );
            throw errorCondition;
        }
    }