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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi Joe,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>CrossLink is just a form of simple
association. You can create or access the CrossLink in the same way as other association.
For example,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>ClassA <(cl_src---------------------------------(cl_dst)>
ClassB</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>There is a CrossLink defined between ClassA
object and ClassB object with association end role names as “cl_src”
and “cl_dst”.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>To create a crosslink from ClassA object
to ClassB object, the code would look like:</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>ClassA.cl_dst_end() += ClassB; (note:
using “+=” or “=” depends on the cardinality defined at
the association end.)</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>To access the crosslink from either end(
say ClassA here):</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>set<ClassB> classBs = ClassA.cl_src();</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hope this helps,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Feng</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> great-users-bounces@list.isis.vanderbilt.edu
[mailto:great-users-bounces@list.isis.vanderbilt.edu] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Joe Porter<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, August 10, 2007
10:51 AM<br>
<b><span style='font-weight:bold'>To:</span></b> great-users<br>
<b><span style='font-weight:bold'>Subject:</span></b> [great-users] Debug via
attribute mapping</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>I'm trying to debug a rule that creates crosslinks,
which are then<br>
used in later rule. I need to see whether the crosslinks were actually <br>
created, but the GR debugger can't do that. Due to a bug in the <br>
code generator (see previous e-mails), I can't generate code for this <br>
tranformation and step through it. <br>
<br>
Now down to the question -- Gabor suggested that we might be able to<br>
add attribute mapping code to the rule that creates the crosslinks in <br>
order to see whether they were created. My problem is that the <br>
UDM code generated for the crosslinks provides no clues about how they<br>
could be referenced or accessed. Is this a relatively easy thing to do?<br>
What would be the form of CrossLink references created this way?<br>
<br>
Thanks for all of your help,<br>
-Joe</span></font></p>
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