Release Notes, WBI DK 4.4
- The graphical user interface (GUI)
features an improved request processing view. In addition to the
previous features, it now displays megs that are invoked by
another meg by using the
forwardRequest() method. Furthermore, exception messages and
stack traces are displayed after an exception occurs during a
- A version of FetchUrl.fetch(...) which takes a
SystemContext as an
argument. This allows the invocation of this method outside of a
- The get/setUserData(...) methods are added to
SystemContext, allowing a way for plugins to exchange data
and provide services to each other outside of the context of a
- New database persistence API
- KeepOnServerEditor is a new bean which rewrites links to
explicitly pass requests through the WBI server. This is useful if
the browser is not configured to use WBI as a proxy.
- RedirectFollowEditor is a new bean which internally
follows redirects (HTTP 301 & 302) and fills in relative URL's. This
might be useful in reducing latency if WBI is being used to proxy for
a device on a slow link, or if writing a lightweight browser that uses
WBI for some of its plumbing.
- Translations for the WBI console and message logging are provided
for the following languages and locales: de (German), en (English), es
(Spanish), fr (French), it (Italian), ja (Japanese), ko (Korean),
pt_BR (Portuguese in Brazil), zh (Chinese), and zh_TW (Chinese in
Taiwan). Consult your operating system and Java platform
documentation for information on how to set your locale to take
advantage of these translations. English is the default if your
language/locale is not listed above. No translations are provided for
- Ordering of startup of plugins and sublayers fixed so that no
requests are processed until all plugins loaded, and plugins can use
sublayers at any time, including initialization.
- Parsing problems in HtmlEditor/HtmlTokenizer/HtmlTag
- For a URL generated by HttpRequest, if the "name" portion
(the part after the "#") is null, then it used to print #null, now it
doesn't add the name part at all.
- Some changes were made to the way WBI buffers streams between
Megs. WBI should no longer run out of memory when downloading a very
No porting should be necessary in most cases, as the
transition from WBI DK 4.3 to WBI DK 4.4 involves mainly the
addition of features and functionality.
See our notes on using the new Persistent Store scheme.
Some changes were made to the way streams are buffered between Megs.
If your Meg ever throws a
RequestRejectedException you'll probably want to read the
new information provided in the docs for that Exception.
Compatibility with IBM WebSphere Transcoding Publisher We
have coordinated our efforts with the IBM WebSphere
Transcoding Publisher team. WBI Plugins written for WBI DK
version 4.4 will also run on the Transcoding Publisher product.
Please report any problems by subscribing and posting to the
WBI developer mailing list.
We also monitor the WBI
discussion forum on IBM Alphaworks, and the firstname.lastname@example.org email address.
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