RE: [Xpipe-developers] questions about using 0.4

[David S. <ds...@st...>]

Hey Bob,

	Probably not official answers.  But as someone who's been following pretty
closely, I'll help where I can.

1.	ExecuteXComponent.py will execute an X Component.  It's main method looks
like mainly a test driver so you would have to launch a jython interpreter
and then "from ExecuteXComponent import ExecuteXComponent"  Then you can
call ExecuteXComponent() while in the interpreter.  Just look in
ExecuteXComponent for the arguments.  This will work for JavaClass, Jython,
and XSLT XComponents.  No support for execute yet.  Doing this directly will
allow you to use whatever input and output files you like.  I have been
trying to mirror some of the XComponent development in Java and this
provides an alternative means to execute an XComponent.  If interested see
here from the list archives:
http://www.geocrawler.com/lists/3/SourceForge/17817/0/7615048/

2.	The Big Aspirational Plan is probably not the best resource for the short
term stages.
http://xpipe.sourceforge.net/Articles/Documentation/fog0000000039.html Lists
the short term deliverables.  XPipes come in the anxiously awaited 0.6.

3.	Split, Scatter, and Gather are functions of the XRig, a level above the
XPipe.  I wrote one XCOmponent that mimics the Jython program that generates
HTML documentation of an XComponent.  YOu can fetch it from
http://www.starrconnect.com/xpipe/doc.xco .  Note that my web server doesn't
deliver it with the proper MIME type so to fetch it use something like wget
or in a browser 'view source' then 'save as'.  I believe that Sean hopes
others my contribute some valuable XComponents.

David



-----Original Message-----
From: xpi...@li...
[mailto:xpi...@li...]On Behalf Of
DuCharme, Bob (LNG)
Sent: Tuesday, January 29, 2002 4:20 PM
To: 'xpi...@li...'
Subject: [Xpipe-developers] questions about using 0.4


Hello XPipers!

I downloaded xpipe0.4.zip and ran the xc0 - xc3 tests fine using Windows 98
and Sun's Java HotSpot Client VM build 1.3.0_01. I have four questions (and
I apologize if the answers were under my nose somewhere):

1. How do we tell an XComponent to use some input other than the test input,
e.g. a foobar.xml file sitting on the hard disk?

2. Although the Big Aspirational Plan document says that XPipes are the
focus of the 0.4 release, and Schemas\XPipe.dtd does show me the proper
structure of an XPipe, I don't see anything in the 0.4 distribution about
running a pipeline. How do I use the output from one XComponent as the input
of the next one?

3. The FAQ mentions XComponents split, scatter, gather, triggers etc., but I
don't see these anywhere in XPipe 0.4 distribution. Where can I see
XComponents other than xc0 - xc3?

4. Tell me more about executing Code with type="Exec". For example, if it's
an Omnimark script, where would I say that Omnimark is the executable to
run?

Two points about the README file:

In Step 2, "XComponentUnitTest.py" should say "jython
XComponentUnitTester.py"

In "jython InstallXComponent.py XComponents/xc2.xco /test" in the readme, I
would lose the / before test throughout. Why put the test file off the root?
A subdirectory of the installation directory makes more sense. (Or at least
add a note in step 1 that that's the path name--this isn't obvious,
especially to us old folk who remember the forward slash used to indicate
switches in DOS--and that you might want to install it elsewhere.)

Bob DuCharme        www.snee.com/bob             <bob@
snee.com>  see http://www.snee.com/bob/xsltquickly for
info on book "XSLT Quickly" from Manning Publications.

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