Datasystems Redesign

Datasystems is one of the core NetBeans APIs. Nearly everything is build around it and it is used by most modules. It is subsystem which recognizes different file types (for example, Java sources vs. HTML files); supplies basic behaviors to files (e.g. ability to be compiled, ability to be opened in the editor); permits files to be modified and saved; groups together related files in a directory; works with the Nodes API to provide the display for files in the Explorer (icon, context menu, subtrees, etc.); handles the New wizard and templates; and generally serves as a higher-level abstraction to the lower-level Filesystems API. Thus it is not surprising that lot of problems have been identified in it during the time that need to be solved.

What's new

  • November 26, 2003:  branch 35050 merged into trunk so trunk implementation  uses Convertor API (see 36297) , doesn't use DataSystems and provide backward compatibility for current instances and settings files with java serialization.
  • Oct 7, 2003:  merged context are finished - see Javadoc for how to use it. There is still couple of issues to resolve (36283, 36284), but basic functionality works.
  • Sep 17, 2003:  two proposals added: Positional ordering proposal and Display name and Icon in Registry API
  • Sep 11, 2003:  document about object's lifecycle in Registry/Convertor APIs added
  • August 5, 2003: the Convertor API module was added to main turnk
  • July 21, 2003: work on Filesystems Extension API started
  • July 17, 2003: this central webpage for DS Redesign was created from several separate documents
  • June 27, 2003: prototype of  Convertor API module was created and is being discussed on nbdev mailing list.
  • May 15, 2003: the Registry API modules was added to main trunk; here can be found its JavaDoc
  • May 15, 2003: the Registry API modules was added to main trunk; here can be found its JavaDoc
The most actual information about what is going on, which tasks we are working on can be found in Plan document.

Project documentation

  • Filesystems Extension API in detail
  • Misc Other Links


  • JNDI API
  • Preferences API
  • Properties API
  • Java Beans
  • Long-Term Persistence for JavaBeans - 1, 2, 3, 4
  • Jakarta Betwixt

  • Project Features

    About this Project

    openide was started in November 2009, is owned by Antonin Nebuzelsky, and has 13 members.
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