Announcing 4DOM 0.7.0
Subject: Announcing 4DOM 0.7.0 Author: Uche Ogbuji <uche@malatesta.local> Date: 1999/02/14 Forum: comp.text.xml
FourThought LLC (http://FourThought.com) announces the release of 4DOM 0.7.0 ----------------------- A CORBA-aware implementation of the W3C's Document Object Model in Python 4DOM is a close implementation of the DOM recommendation, including DOM Core level 1, DOM HTML level 1, Node Iterator and Node Filter from DOM Level 2, and a few utility and helper components. 4DOM was designed from the start to work in a CORBA environment, although an orb is no longer required. For using 4DOM in an ORB environment, Fnorb and ILU are supported. 4DOM is designed to allow developers rapidly design applications that read, write or manipulate HTML and XML. New in 4DOM 0.7.0 ----------------- - Added support for "orbless" configuration. Now neither ILU nor Fnorb are requred and 4DOM can be run purely locally, but still with a consistent interface. Naturally, the orbless config is much faster than the ilu or fnorb configs. - Many fixes to improve consistency over an ORB interface (an example using an ORB has been added to demos). - Fixes to NodeList and NamedNodeMap - Added an Ext package for DOM extensions, and moved many of the existing extensions there. See docs/Extensions.html. - Added to Ext an extensive factory interface for creation of nodes, consistent for local and ORB use. - Added to Ext a ReleaseNode helper function to reclaim unused nodes, necessary for ORB usage, and also for local usage because of circular references. - Added NodeIterators and Node Filters from DOM Level 2 - Added a visitor and walker system (to Ext). These generalize the NodeIterator concept for cases where pre-order traversal is not suitable: for instance printing. - Removed the repr functions from Node interfaces in favor of print walker/visitors. - Added Print and PrettyPrint helper functions to Ext for printing and pretty-printing node trees. - Added Strip helper function to Ext to strip all ignorable white-space text nodes from a node tree. - Moved all tools to construct a DOM tree from XML and HTML text to a Builder module in Ext, with two functions: FromXML and FromHTML. - Added options to FromXML that allow specification of whether to keep ignorable whitespce int he resultant node tree, and options on whether to validate. - Innumerable minor and miscellaneous fixes But what about PyDOM? --------------------- Please note that the XML-SIG is working on a separate DOM implementation, and there is currently discussion regarding the relative roles of 4DOM and PyDOM. PyDOM follows a more Python-like interface, returning a dictionary of nodes, for instance, where the DOM spec specifies an object with NamedNodeMap interface. This was a deliberate choice for the convenience of Python programmers. Also, PyDOM can build and write HTML, but only supports HTML nodes through the DOM core interface. 4DOM strictly follows the DOM interface specs and supports all HTML element capabilities. However, 4DOM is a bit more heavyweight. More info and Obtaining 4DOM ---------------------------- Please see http://OpenTechnology.org/projects/4DOM 4DOM is distributed under the terms of the GNU Library Public License (LGPL). http://www.gnu.org/copyleft/lgpl.html
Uche Ogbuji uche.ogbuji@fourthought.com Consulting Member, FourThought LLC http://FourThought.com http://OpenTechnology.org
Prepared by Robin Cover for the The SGML/XML Web Page archive.
