2012-06-18

GXml-GObject Serialisation: Back to the Future

Hello.



Part of the past two weeks has been spent updating my system to a modern environment (Fedora 17) which mean development tool updates (like vala and gee) and updating GXml to support the changes there.  It took me a few days to correctly update the NodeList classes as they were Iterable and had Iterators.  One of which changed a little, and both now require implementing a Traversable interface, which turned out simpler than I originally thought it.  I'm not completely sure that I got the Traversable methods right, but I ended up realising that there were generic implementations that I can hopefully rely on.  GXml still passes its tests which seem sufficient.



Once that was out of the way, I could work on making serialisation code compile and base it off of JsonGLib.  (My first prototype was simple and stupid and built up strings that were then converted to a GXml Document :D.)  The current prototype has code that:


  • serialises to XML a GObject with properties (but not its member fields), similar to JsonGLib

  • deserialises from XML a GObject (assuming the type is known to the local system)

  • has an interface a class can implement to handle serialisation itself


Well, the third one probably doesn't work any more, as the first iteration of the JsonGLib-ish design that was using it was rewritten to work on whole objects right now.  Also, the serialisation and deserialisation of objects support most but not all property types so far (e.g. enums are skipped).



I've been documenting challenges I've been encountering under another category on my blog, #Technology.  Most of them involve bumping my head against Vala and figuring out how some things work in it.  It took me an embarrassing while to realise that GValue's transform and conversion methods will not convert strings to things like ints and doubles.  Whoops.



The goals for this next week are:


  • investigate options for serialising non-property fields (if any one has any tips (e.g. GObject Introspections) please note them in a comment :D)

  • get the interface into a happy state and tested

  • make the auto-serialising code more complete and eliminate compiler warnings


The current prototype code is available in GXml's git repository now.  I'm having severe difficulty bringing myself to publish code that's so rough, especially given the high standard I encounter in GNOME when submitting patches to other projects, and it kept me from sharing prototypes until now, but as I'm being reminded, it'll be more important to have it visible so that people who want to help can.



Cheerio!

Keine Kommentare:

Kommentar veröffentlichen

Blog Archive

Dieses Blog durchsuchen

Labels

#Technology #GNOME gnome gxml fedora bugs linux vala google #General firefox security gsoc GUADEC android bug xml fedora 18 javascript libxml2 programming web blogger encryption fedora 17 gdom git emacs libgdata memory mozilla open source serialisation upgrade web development API Spain containers design evolution fedora 16 fedora 20 fedora 22 fedup file systems friends future glib gnome shell internet luks music performance phone photos php podman preupgrade tablet testing typescript yum #Microblog Network Manager adb apache art automation bash brno catastrophe css data loss debian debugging deja-dup disaster docker emusic errors ext4 facebook fedora 19 gee gir gitlab gitorious gmail gobject google talk google+ html libxml mail microsoft mtp mysql namespaces nautilus nextcloud owncloud picasaweb pitivi ptp python raspberry pi resizing rpm school selinux signal sms speech dispatcher systemd technology texting time management uoguelph usability video web design youtube #Tech Air Canada C Electron Element Empathy Europe GError GNOME 3 GNOME Files Go Google Play Music Grimes IRC Mac OS X Mario Kart Memento Nintendo Nintendo Switch PEAP Selenium Splatoon UI VPN Xiki accessibility advertising ai albums anaconda anonymity apple ask asus eee top automake autonomous automobiles b43 backup battery berlin bit rot broadcom browsers browsing canada canadian english cars chrome clarity comments communication compiler complaints computer computers configuration console constructive criticism cron cropping customisation dataloss dconf debug symbols design patterns desktop summit development discoverability distribution diy dnf documentation drm duplicity e-mail efficiency email english environment estate experimenting ext3 fedora 11 festival file formats firejail flac flatpak forgottotagit freedom friendship fuse galaxy nexus galton gay rights gdb german germany gimp gio gjs gnome software gnome-control-center google assistant google calendar google chrome google hangouts google reader gqe graphviz growth gtest gtg gtk gvfs gvfs metadata hard drive hard drives hardware help hp humour ide identity instagram installation instant messaging integration intel interactivity introspection jabber java java 13 jobs kernel keyboard language language servers languages law learning lenovo letsencrypt libreoffice librpm life livecd liveusb login lsp macbook maintainership mariadb mario matrix memory leaks messaging mounting mouse netflix new zealand node nodelist numix obama oci ogg oggenc oh the humanity open open standards openoffice optimisation org-mode organisation package management packagekit paint shedding parallelism pdo perl pipelight privacy productivity progress progressive web apps pumpkin pwa pyright quality recursion redhat refactoring repairs report rhythmbox sandboxes scheduling screenshots self-navigating car shell sleep smartphones software software engineering speed sql ssd synergy tabs test tests themes thesis tracker travel triumf turtles tv tweak twist typing university update usb user experience valadoc video editing volunteering vpnc waf warm wayland weather web apps website wifi wiki wireless wishes work xinput xmpp xorg xpath
Powered by Blogger.