<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2800.1400" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV dir=ltr align=left><SPAN class=610513112-13042004><FONT face=Arial
color=#0000ff size=2>Larry,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=610513112-13042004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=610513112-13042004><FONT face=Arial
color=#0000ff size=2>The main reason we highly recommend the export/import
method when upgrading is the possible incompatibility between the MGA file
formats (note: not because of some paradigm change but the change of
the file format itself). This kind of problem has not be handled by CAPE,
and it is far from straightforward to provide such a migrating tool (this
tool would have to access different MGA versions on the very same
computer).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=610513112-13042004><FONT face=Arial
color=#0000ff size=2>--</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=610513112-13042004><FONT face=Arial
color=#0000ff size=2>peter</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=610513112-13042004><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B>
gme-users-bounces@list.isis.vanderbilt.edu
[mailto:gme-users-bounces@list.isis.vanderbilt.edu] <B>On Behalf Of </B>Larry
Howard<BR><B>Sent:</B> Friday, April 09, 2004 4:51 PM<BR><B>To:</B>
gme-users@list.isis.vanderbilt.edu<BR><B>Subject:</B> [gme-users] Why doesn't
MetaGME address paradigm version changes automatically?<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>GME's release notes state:</FONT></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV><FONT face=Arial size=2><EM>"As your first step in the upgrade process,
please export all your<BR>important projects (to XML format). Binary
compatibility between<BR>different GME versions is not
guaranteed."</EM></FONT></DIV></BLOCKQUOTE>
<DIV><FONT face=Arial size=2>We have recognized and addressed this issue for
our GME-based product CAPE. During installation, we distribute and
register all paradigm versions that we currently support, and updaters are
provided to address any discontinuities not handled by GME's native upgrading
features. We do this because it is an unreasonable expectation of
our users to export all of their GME projects to XME prior to upgrading GME
versions, especially when exporting to XME is used to address simply
the unavailability of earlier versions of a paradigm.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>GME distributes several paradigms as part of its
installation. Most important among these is the MetaGME paradigm that is
an essential part of using GME for anything other than projects that
use the other distributed paradigms. It would be relatively
straightforward for the MetaGME paradigm to follow the lead of CAPE in
supporting migration between paradigm versions, since it is unlikely for
this paradigm to incorporate such discontinuties as could not be handled by
GME's native upgrading features or simple updaters.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><STRONG>Why not?!!</STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>lph</FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>--<BR>Larry
Howard<BR>Sr. Research Scientist<BR>Institute for Software Integrated Systems,
Vanderbilt University<BR></FONT><A
href="mailto:howardlp@isis.vanderbilt.edu"><FONT face="Times New Roman"
size=3>howardlp@isis.vanderbilt.edu</FONT></A><FONT face="Times New Roman"
size=3> voice: (615) 343-7447 fax: (615)
343-7440</FONT><BR></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></BLOCKQUOTE></BODY></HTML>