I'm always keeping my options open so I don't have to rewrite a lot of stuff later if I realize I need for instance encapsulation.
On Mon, Nov 26, 2012 at 9:21 AM, Thorsten Jolitz <tjol...@googlemail.com>wrote: > Joe Bogner <joebog...@gmail.com> writes: > > Hi Henrik, Hi Joe, > > > Thank you for sharing. I have also thought about using redis for > > session state. > > I find that quite interesting too. > > > I tend to use picolisp in more of a functional form possibly because > > its a breath of fresh air after 10 years of oop in c#. I sometimes > > wonder when its a good fit to mix in oop in picolisp. > > The last sentence addresses a question I have (or rather two question > about one topic): > > Say I want to write a parser in PicoLisp that parses Org-mode files > (with their outline tree structure) and stores the structure and > contents of the file in persistent objects in a database, allowing to > reconstruct the file on demand (and to query the content, recombine it, > or to use it in a web-application). > > The tree-structure of the document could be represented naturally by a > class hierarchy, and each element-class could not only store the > elements content and meta-data, but also have specialised methods for > parsing org-mode-elements of its type. So the main parser only would > have to recognize an element-type, create a new object of this type, > and call its parsing method that stores all the stuff inside the element > as well as its meta-data in 'This. > > Questions: > > 1. Would that be a reasonable application of oop in PicoLisp? How does > it compare to parse a wiki-file and store the nested elements in a > nested list? > > The reason I would want oop is to allow for big data and to be able to > quickly select/filter elements and to export them to some kind of > thematic wiki-file (agenda files that show entries for dates, or topics, > or certain tags etc. ) > > 2. What about version management in the database (without reinventing > GIT or so)? > > Since Org-mode files are plain text, VC like Git is perfect to manage > changes over time. What if such a text-file has been parsed and its > content stored in a OO-PicoLisp DB - how would one deal with changes, > updates, keeping history without starting to write its own version > control system? Simpy check if the original text-file has changed, and > if so, parse it again and replace the content in the already existing > objects? > > Or is there a smarter way that minimizes parsing and stores only the > diffs, keeping the history somehow? > > -- > cheers, > Thorsten > > -- > UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe >
