Products.ParsedXML 1.5.1

What is it?

Parsed XML allows you to use XML objects in the Zope environment. You can create XML documents in Zope and leverage Zope to format, query, and manipulate XML.

Parsed XML consists of a DOM storage, a builder that uses PyExpat to parse XML into the DOM, and a management proxy product that provides Zope management features for a DOM tree. It also includes a system to create paths to nodes in Zope URLs (NodePath).

Features

The Parsed XML product parses XML into a Zopish DOM tree. The elements of this tree support persistence, acquisition, etc.. The document and subnodes are editable and manageable through management proxy objects, and the underlying DOM tree can be directly manipulated via DTML, Python, etc..

http://server/myDoc/0/2/mymethod

http://server/myDoc/firstChild/nextSibling/mymethod

Developing with Parsed XML

We like to think that Parsed XML provides a flexible platform for using a DOM storage and extending that storage to do interesting things. See README.DOMProxy for an explanation of how we’re using this for Parsed XML.

We’ve included a comprehensive unit test suite to make testing for DOM compliance easier. See tests/README for details.

If you want to submit changes to Parsed XML, please use the test suite to make sure that your changes don’t break anything.

Bugs

There are bugs in how multiple node references reflect the hierarchy above the node:

• A reference to a subnode of a DOM document won’t reflect some hierarchy changes made on other references to the same node.

  If two references to a node are created, and one is then reparented, the other reference won’t reflect the new parent. The parentNode attribute will be incorrect, for example, as well as the ownerDocument and ownerElement attributes.

• A reference to a subnode of a DOM document can’t be properly stored as a persistent attribute of a ZODB object; it will lose hierarchy information about its parent as well.

Entity reference handling is not complete:

• Entity references do not have child nodes that mirror the child nodes of the referenced entity; they do not have child nodes at all.

• TreeWalker.expandEntityReferences has no effect, because of the above bug.

Traversal support for visibility and roots is not complete.

ParsedXML 1.5.1 (2010/07/15)

• Update imports and syntax to work with Zope 2.12 and Python 2.6.

ParsedXML 1.5

Bugs Fixed:

• Allow unicode characters in qualified names.

Other changes:

• Zope 2.8 transaction compatibility fixes.

ParsedXML 1.4

Features Added:

• Switched the test suite over to use ZopeTestCase.

• Updated UI so that the XML edit screen is the first screen seen, not the DOM screen.

• UI is UTF-8 by default now, the same as the default encoding of the XML. XML encoding setting in the XML declaration other than UTF-8 are supported by the upload, but the XML text will be converted to unicode internally and will display as UTF-8, the default encoding.

  You can also use the encoding in the XML declaration in the edit entry, but you will be unlikely to get it right as the interactions between various encodings becomes rather complex. If you have XML text in a non-UTF-8 encoding upload it as a file rather than copy and paste it.

• Switched over to new-style security declarations and added a few.

Bugs Fixed:

• Cleaned out tests so they all pass. This was done (unfortunately) by disabling some failing tests.

• Some encoding issues should be more sane now.

Misc:

• Updated license to ZPL 2.0.

• get rid of unused HTML writing support.

• Removed old Printer.py module (PrettyPrinter works better and has more functionality).

• get rid of obsolete delegation through StrIO module to get StringIO.

ParsedXML 1.3.1

Bugs Fixed:

• Bugfix/performance improvement. Do not rely on getPersistentDocument() but instead use acquisition parent. This fixes a memory leak triggered when doing document.documentElement, and also likely improves performance when accessing the DOM through the ManageableDOM wrappers.

• The Zope Find tab should now not give an error anymore when searching with ids.

• Use the One True Way to import expat now (‘from xml.parsers import expat’).

ParsedXML 1.3.0

Features:

• All element nodes now have a _element_id id. This id is guaranteed to be unique in the document, though which id an element has may change in a reparse.

• NodePath system for creating various paths to nodes. This can be based on ‘child’ (child node index), ‘element_id’, or ‘robust’, which is not very robust as yet in some ways, but should be resistent to quite a few changes to the document.

• added pretty printing feature. A pretty print button renders the document in pretty printed form, but does not save this changed version (you can do so yourself).

Bugs Fixed:

• Removed ParsedXML’s Expat, introduced dependency on PyXML’s pyexpat instead (or just compile your own). This gets rid of lots of install hassles, especially on Windows. Just install PyXML.

• An ongoing attempt to bring sanity to the unit test story.

• Avoid XML-garbling bug in Printer by using PrettyPrinter.

• various bugfixes in the DOM.

ParsedXML 1.2.1

Features:

• pyexpat.c is now in sync with Python’s and PyXML’s version.

ParsedXML 1.2.0

Bugs Fixed:

• Tests are now more conformant with Zope unit testing guidelines.

• Should work with Python 2.1/Zope 2.4, but not all the way there yet (parser segfault..)

• new version of PyExpat

Features:

• Access to DOM from Zope environment sped up by new DOMProxy implementation

ParsedXML 1.1b1

Bugs Fixed:

• Fixed an ExpatBuilder bug that caused a DOM reference to be leaked when parsing occured at the document. There is still a leak for fragment parsing that we’re looking into.

Features:

• ZCatalog support added

• ZCache support added

ParsedXML 1.1a1

Bugs Fixed:

• Version numbers make more sense :)

Features:

• The value returned by get_size() is cached, which will often speed up the management view of an instance’s container.

ParsedXML 1.0

Bugs Fixed:

• Problems with Attr Node manipulation not being reflected by the getAttribute methods of their Elements and vice versa fixed.

• Erroneous position information for parse error output on subnodes fixed.

• Default attributes are noticed by the parser and printer, and the relevent DOM methods work.

Features:

• ManageableDOM Nodes can find the persistent Document wrapper when it has been installed in a Zope ObjectManager. This object, rather than a newly created ManageableDocument wrapper, is returned when available by OwnerDocument calls. This allows Zopish navigation and discovery out of the Document, helps shorten acquisition paths, and fixes some bugs with manipulation at the Document.

• ManageableDOM’s usage of namespaces for parsing is now optional and settable.

• The DOM 2 Traversal interface has been fleshed out, although support for visiblity and roots is not complete.

ParsedXML 0.1b3

Bugs Fixed:

• Yet a few more DOM bugs fixed.

• Fixed a distribution error that was causing build problems under Solaris.

ParsedXML 0.1b2

Bugs Fixed:

• Many bugs found and fixed as we hammered out new DOM tests, especially in namespace usage, attribute printing, and attribute children.

Features:

• Several speedups throughout the code.

• ManageableDOM refactored into several base classes to make extension easier.