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<DIV dir=ltr align=left><SPAN class=566285914-29012007><FONT face=Arial
color=#0000ff size=2>Thanks Steve,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=566285914-29012007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=566285914-29012007><FONT face=Arial
color=#0000ff size=2>That worked a treat; it was a PEBKAC issue
;-)</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=566285914-29012007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=566285914-29012007><FONT face=Arial
color=#0000ff size=2>The wonders a weekend can work!!</FONT></SPAN></DIV><BR>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <B>On Behalf Of </B>Steven
Williams<BR><B>Sent:</B> 27 January 2007 21:34<BR><B>To:</B> Rules Users
List<BR><B>Subject:</B> Re: [rules-users] RE: Why not
retracting?<BR></FONT><BR></DIV>
<DIV></DIV>Hi Mike,<BR><BR>I suggest using the Audit view in eclipse
(documented in the help) which will allow you to see what rules are being
added to and removed from the agenda.<BR><BR>cheers<BR>Steve<BR><BR>
<DIV><SPAN class=gmail_quote>On 1/27/07, <B class=gmail_sendername>Anstis,
Michael (M.)</B> <<A
href="mailto:manstis1@ford.com">manstis1@ford.com</A>> wrote:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff size=2>Thanks
Jeff - I guess Rules Engines were common New Years resolution (I'm about 2
weeks in too) ;-)</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff size=2>I
understood that the LHS side was operated upon when Facts were asserted
which, I think, creates the RHS Activation in the Agenda. However I
also thought that if the RHS modified Facts in the Working Memory (by
retracting, asserting or modifying them) the "Two Phase Execution" (Agenda,
Section 1.6.5) reassessed which rules needed "firing" (activation?) and
hence some of the "Cost - calculate cost for 'Stamping process' on a
process" rules (in my example below) would be disposed of. Is the activation
not being dropped (perhaps because the "machine == ( m )" condition is still
met all be it that the Price to which it relates as been disposed of?).
</FONT></SPAN><SPAN><FONT face=Arial color=#0000ff size=2>I thought we were
encouraged to write rules that didn't need to be ran in any particular order
whereas I now find myself having to run some before
others?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff size=2>I'm not
ranting at you Jeff, I'm just confused.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2>Cheers,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2>Mike</FONT></SPAN></DIV><BR>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV lang=en-us dir=ltr align=left>
<HR>
<FONT face=Tahoma size=2><B>From:</B> <A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:rules-users-bounces@lists.jboss.org"
target=_blank>rules-users-bounces@lists.jboss.org</A> [mailto:<A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:rules-users-bounces@lists.jboss.org"
target=_blank>rules-users-bounces@lists.jboss.org</A>] <B>On Behalf Of
</B>Grimshaw, Jeffrey<BR><B>Sent:</B> 26 January 2007 16:34<BR><B>To:</B>
Rules Users List<BR><B>Subject:</B> RE: [rules-users] RE: Why not
retracting?<BR></FONT><BR></DIV>
<DIV><SPAN class=e id=q_1105f5d80b9e5274_1>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff size=2>Hi
Michael. I've only been using JBoss Rules for about 2 weeks, so keep
that in mind when reading my reply. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff size=2>The
way I understand it works is that facts are evaluated against the LHS
of all the rules in the ruleset as they are asserted. That is,
when a fact is added to the WorkingMemory, the engine determines which
rules apply to that fact. You may expect that
evaluation to take place when the rules are "run". This may
have something to do with the behavior you are seeing.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff size=2>For
more info on what I'm talking about, see section <A
onclick="return top.js.OpenExtLink(window,event,this)"
href="http://1.6.4.2" target=_blank>1.6.4.2</A> of the user docs.
</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT face=Arial color=#0000ff size=2><A
onclick="return top.js.OpenExtLink(window,event,this)"
href="http://labs.jboss.com/file-access/default/members/jbossrules/freezone/docs/3.0.5/html/index.html"
target=_blank>http://labs.jboss.com/file-access/default/members/jbossrules/freezone/docs/3.0.5/html/index.html</A></FONT></SPAN></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><SPAN><FONT face=Arial color=#0000ff
size=2>Cheers,</FONT></SPAN></DIV>
<P><SPAN lang=en-us><FONT face=Arial color=#0000ff
size=2>--Jeff</FONT></SPAN> </P>
<DIV> </DIV><BR>
<DIV lang=en-us dir=ltr align=left>
<HR>
<FONT face=Tahoma size=2><B>From:</B> <A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:rules-users-bounces@lists.jboss.org"
target=_blank>rules-users-bounces@lists.jboss.org</A> [mailto:<A
onclick="return top.js.OpenExtLink(window,event,this)"
href="mailto:rules-users-bounces@lists.jboss.org"
target=_blank>rules-users-bounces@lists.jboss.org</A>] <B>On Behalf Of
</B>Anstis, Michael (M.)<BR><B>Sent:</B> Friday, January 26, 2007 8:08
AM<BR><B>To:</B> Rules Users List<BR><B>Subject:</B> [rules-users] RE: Why
not retracting?<BR></FONT><BR></DIV>
<DIV></DIV>
<P><FONT face=Arial color=#0000ff size=2>By way of an update; if the
retraction is made within a different Agenda Group the rules work as
expected.</FONT> </P>
<P><FONT face=Arial color=#0000ff size=2>However the problem of the
retraction having no obvious affect when operated within the same Agenda
Group remains.</FONT> </P>
<P><FONT face=Arial color=#0000ff size=2>Is this a bug?</FONT> </P>
<UL>
<P><FONT face=Tahoma
size=1>_____________________________________________ </FONT><BR><B><FONT
face=Tahoma size=1>From: </FONT></B> <FONT face=Tahoma
size=1>Anstis, Michael (M.) </FONT><BR><B><FONT face=Tahoma
size=1>Sent: </FONT></B> <FONT face=Tahoma size=1>26 January
2007 11:32</FONT> <BR><B><FONT face=Tahoma
size=1>To: </FONT></B> <FONT face=Tahoma
size=1>'Rules Users List'</FONT> <BR><B><FONT face=Tahoma
size=1>Subject: </FONT></B>
<FONT face=Tahoma size=1>Why not retracting?</FONT> </P>
<P><FONT face=Arial size=2>Hello,</FONT> </P>
<P><FONT face=Arial size=2>I have the following rules; one removes
"Prices" that do not have the required "Economic Level" from working
memory, the other calculates a "Costs":-</FONT></P>
<UL>
<P><FONT face="Courier New" size=2>rule "Cost - remove prices that do
not have the required 'Economic Level'"</FONT> <BR><FONT
face="Courier New" size=2>agenda-group "stamping-costs"</FONT>
<BR><FONT face="Courier New" size=2>//</FONT><FONT face="Courier New"
size=2> salience 1</FONT> <BR><FONT face="Courier New"
size=2>when</FONT> <BR>
<FONT face="Courier New" size=2>p : Price ( economicLevel != (
Utilities.makeDate(1, 1, 2007) ) )</FONT> <BR><FONT face="Courier New"
size=2>then</FONT> <BR>
<FONT face="Courier New" size=2>System.out.println("Retracting
"+p.toString());</FONT> <BR>
<FONT face="Courier New" size=2>retract(p);</FONT> <BR><FONT
face="Courier New" size=2>end</FONT> </P>
<P><FONT face="Courier New" size=2>rule "Cost - calculate cost for
'Stamping process' on a process"</FONT> <BR><FONT face="Courier New"
size=2>agenda-group "stamping-costs"</FONT> <BR><FONT
face="Courier New" size=2>//</FONT><FONT face="Courier New" size=2>
salience</FONT> <FONT face="Courier New" size=2>2</FONT> <BR><FONT
face="Courier New" size=2>when</FONT>
<BR> <FONT
face="Courier New" size=2>r : ResourceEntry ( m : machine )</FONT>
<BR> <FONT
face="Courier New" size=2>//</FONT><FONT face="Courier New" size=2>p :
Price ( economicLevel == ( Utilities.makeDate(1, 1, 2007) ), machine
== ( m ) )</FONT> <BR> <FONT
face="Courier New" size=2>p : Price ( machine == ( m ) )</FONT>
<BR><FONT face="Courier New" size=2>then</FONT>
<BR> <FONT
face="Courier New" size=2>Cost cost = new Cost(r, p);</FONT>
<BR> <FONT
face="Courier New" size=2>cost.setCost((float) (r.getUsage() *
p.getRate()));</FONT> <BR>
<FONT face="Courier New" size=2>assert(cost);</FONT> <BR><FONT
face="Courier New" size=2>end</FONT> </P></UL>
<P><FONT face=Arial size=2>The problem is that the "Cost" rule still
works upon ALL "Prices" (even those with an incorrect "Economic
Level").</FONT> </P>
<P><FONT face=Arial size=2>If I change the line in the "Cost" rule to
also check the "Economic Level" the rules work as expected (i.e. "Costs"
are only calculated using "Prices" with an "Economic Level" of
01/01/2007).</FONT></P>
<P><FONT face=Arial size=2>I've tried using "salience" levels too (as
commented in the above Rules) but this doesn't have any effect
either.</FONT> </P>
<P><FONT face=Arial size=2>What am I doing wrong?</FONT> </P>
<P><FONT face=Arial size=2>Cheers,</FONT> </P>
<P><FONT face=Arial size=2>Mike</FONT>
</P></UL></SPAN></DIV></BLOCKQUOTE></DIV><BR>_______________________________________________<BR>rules-users
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target=_blank>https://lists.jboss.org/mailman/listinfo/rules-users</A><BR><BR><BR></BLOCKQUOTE></DIV><BR><BR
clear=all><BR>-- <BR>Steven Williams<BR><BR>Supervising
Consultant<BR><BR>Object Consulting<BR>Office: 8615 4500 Mob: 0439 898 668
Fax: 8615 4501 <BR><A
href="mailto:stevenw@objectconsulting.com.au">stevenw@objectconsulting.com.au</A><BR><A
href="http://www.objectconsulting.com.au">www.objectconsulting.com.au</A><BR><BR>consulting
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