odd PH/VMS logical name behaviour

Wed, 10 Mar 2004 10:06:38 -0500

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Chris,  I think this may be a difference in behaviour between 7.2 and 7.3 of
OpenVMS because I tried this in 7.10G3, 7.10G5 and 8.30D4 (all on 6.2 of
OpenVMS) and 8.40D on 7.2-1 and 8.40D on 7.2-2 of OpenVMS and they retrieve
the value of Test correctly.  I don't have a 7.3 OpenVMS system available to
me yet, so I can't test it there.  Perhaps there is a setting on the logical
or in your environment that would affect the default behaviour of the
logical translation function (trnlnm) that is available in 7.3???

I know that OpenVMS is moving more and more into the Posix world which
requires case sensitivity, so more things behave somewhat differently.  I
don't know if this one is an intentional change or not on the part of
OpenVMS.  Usually they don't change the default behaviour of things so
drastically, but who knows.

Prior to 7.3 retrieval using uppercase always retrieved the correct value
due to the basically uppercase or case insensitive nature of the VMS
environment.  PowerHouse is built with this assumption currently, and
generally upcases just about everything coming in to ensure it can find it. 

Allison Hamilton
Senior Software Engineer
Cognos Inc.
Any opinions expressed within this message are mine alone and my employer
cannot be held accountable for them  :-}

-----Original Message-----
From: powerh-l-admin@lists.sowder.com
[mailto:powerh-l-admin@lists.sowder.com]On Behalf Of Chris Sharman
Sent: Wednesday, March 10, 2004 6:30 AM
To: PowerH List
Subject: odd PH/VMS logical name behaviour

I've got a mixed-case logical name:
$ def "Test" "MyTest"

$ quiz
Qz> def mytest char*10 = getsystemval("Test")
Qz> rep mytest

Reports it as blank - presumably it doesn't find it.
Defining it as uppercase works fine.

VMS logical names can be defined mixed-case (but are usually uppercase).
They can be fetched either case-sensitive or case-blind.

Powerhouse would appear to be uppercasing the supplied string, then 
doing a case-sensitive search - not the optimum behaviour !
Be nice if it used the string I gave it, and probably set the case-blind 
flag to avoid breaking most existing stuff.

VMS 7.3, PH 7.10G3

Chris

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<TITLE>RE: odd PH/VMS logical name behaviour</TITLE>
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<P><FONT SIZE=3D2>Chris,&nbsp; I think this may be a difference in =
behaviour between 7.2 and 7.3 of OpenVMS because I tried this in =
7.10G3, 7.10G5 and 8.30D4 (all on 6.2 of OpenVMS) and 8.40D on 7.2-1 =
and 8.40D on 7.2-2 of OpenVMS and they retrieve the value of Test =
correctly.&nbsp; I don't have a 7.3 OpenVMS system available to me yet, =
so I can't test it there.&nbsp; Perhaps there is a setting on the =
logical or in your environment that would affect the default behaviour =
of the logical translation function (trnlnm) that is available in =
7.3???</FONT></P>

<P><FONT SIZE=3D2>I know that OpenVMS is moving more and more into the =
Posix world which requires case sensitivity, so more things behave =
somewhat differently.&nbsp; I don't know if this one is an intentional =
change or not on the part of OpenVMS.&nbsp; Usually they don't change =
the default behaviour of things so drastically, but who =
knows.</FONT></P>

Prior to 7.3 retrieval using uppercase always =
retrieved the correct value due to the basically uppercase or case =
insensitive nature of the VMS environment.&nbsp; PowerHouse is built =
with this assumption currently, and generally upcases just about =
everything coming in to ensure it can find it.

<P><FONT SIZE=3D2>Allison Hamilton</FONT>
<BR><FONT SIZE=3D2>Senior Software Engineer</FONT>
<BR><FONT SIZE=3D2>Cognos Inc.</FONT>
<BR><FONT SIZE=3D2>Any opinions expressed within this message are mine =
alone and my employer cannot be held accountable for them&nbsp; =
:-}</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: powerh-l-admin@lists.sowder.com</FONT>
<BR><FONT SIZE=3D2>[<A =
HREF=3D"mailto:powerh-l-admin@lists.sowder.com">mailto:powerh-l-admin@li=
sts.sowder.com</A>]On Behalf Of Chris Sharman</FONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, March 10, 2004 6:30 AM</FONT>
<BR><FONT SIZE=3D2>To: PowerH List</FONT>
<BR><FONT SIZE=3D2>Subject: odd PH/VMS logical name behaviour</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>I've got a mixed-case logical name:</FONT>
<BR><FONT SIZE=3D2>$ def &quot;Test&quot; &quot;MyTest&quot;</FONT>
</P>

<P><FONT SIZE=3D2>$ quiz</FONT>
<BR><FONT SIZE=3D2>Qz&gt; def mytest char*10 =3D =
getsystemval(&quot;Test&quot;)</FONT>
<BR><FONT SIZE=3D2>Qz&gt; rep mytest</FONT>
</P>

<P><FONT SIZE=3D2>Reports it as blank - presumably it doesn't find =
it.</FONT>
<BR><FONT SIZE=3D2>Defining it as uppercase works fine.</FONT>
</P>

<P><FONT SIZE=3D2>VMS logical names can be defined mixed-case (but are =
usually uppercase).</FONT>
<BR><FONT SIZE=3D2>They can be fetched either case-sensitive or =
case-blind.</FONT>
</P>

<P><FONT SIZE=3D2>Powerhouse would appear to be uppercasing the =
supplied string, then </FONT>
<BR><FONT SIZE=3D2>doing a case-sensitive search - not the optimum =
behaviour !</FONT>
<BR><FONT SIZE=3D2>Be nice if it used the string I gave it, and =
probably set the case-blind </FONT>
<BR><FONT SIZE=3D2>flag to avoid breaking most existing stuff.</FONT>
</P>

<P><FONT SIZE=3D2>VMS 7.3, PH 7.10G3</FONT>
</P>

<P><FONT SIZE=3D2>Chris</FONT>
</P>
<BR>

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