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<DIV dir=ltr align=left><SPAN class=218345314-11042008><FONT face=Arial
color=#0000ff>I am confident Drools supports what you are looking for; did you
try update() - or modify() - in the "then" part of the rule (and not in Java as
you code snippet)?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=218345314-11042008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=218345314-11042008><FONT face=Arial
color=#0000ff>Can you explain more the need for the "computed" flag on the
fact? Is the value of a property set sometimes whilst calculated at other
times?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=218345314-11042008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=218345314-11042008><FONT face=Arial
color=#0000ff>Stick with both Drools and the group - we'll get you to where you
want to be.</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><B>From:</B> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <B>On Behalf Of </B>Jonathan
Guéhenneux<BR><B>Sent:</B> 11 April 2008 15:41<BR><B>To:</B> Rules Users
List<BR><B>Subject:</B> RE: [rules-users] Synch Business Object / Working
Memory<BR></FONT><BR></DIV>
<DIV></DIV>First, thank you for yours answers which are very clear. Your
solution will probably work. I'm just desapointed that there is no way to
synchronized the shadow with the object. That would be great for my
work.<BR><BR>
<BLOCKQUOTE>
<HR>
Subject: RE: [rules-users] Synch Business Object / Working Memory<BR>Date:
Fri, 11 Apr 2008 14:57:52 +0100<BR>From: manstis1@ford.com<BR>To:
rules-users@lists.jboss.org<BR><BR>
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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff><SPAN
class=EC_008434813-11042008>Do you need ruleflow? Perhaps this is too simple
and I misunderstood.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff><SPAN
class=EC_008434813-11042008></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008>package com.sample;</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008>public class Test {</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008> private Integer
a;<BR> private Integer b;<BR> private
Integer c;</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008> public Integer getA()
{<BR> return
a;<BR> }</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008> public Integer getB()
{<BR> return
b;<BR> }</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008> public Integer getC()
{<BR> return
c;<BR> }</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008> public void setA(Integer a)
{<BR> this.a =
a;<BR> }</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008> public void setB(Integer b)
{<BR> this.b =
b;<BR> }</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008> public void setC(Integer c)
{<BR> this.c =
c;<BR> }</SPAN></FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV dir=ltr align=left><FONT face="Courier New" color=#0000ff><SPAN
class=EC_008434813-11042008>}</SPAN></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="Courier New" color=#0000ff>package com.sample</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="Courier New" color=#0000ff>import
com.sample.Test<BR> <BR>rule "rule 1"<BR> salience
90<BR> when<BR>
a : Test( a != null, b == null )<BR>
then<BR> System.out.println("setting b to
10");<BR>
a.setB(10);<BR>
update(a);<BR>end</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="Courier New" color=#0000ff>rule "rule
2"<BR> salience 80<BR>
when<BR> a : Test( b : b != null,
c == null )<BR> then<BR>
System.out.println("setting c to b x
5");<BR> a.setC(b *
5);<BR>
update(a);<BR>end</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="Courier New" color=#0000ff>rule "rule
3"<BR> salience 70<BR>
when<BR> a : Test( c != null
)<BR> then<BR>
System.out.println("c = " + a.getC());<BR>end<BR></FONT></DIV>
<DIV><FONT face="Courier New" color=#0000ff></FONT> </DIV>
<DIV><BR></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV class=EC_OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR>
<FONT face=Tahoma><B>From:</B> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <B>On Behalf Of </B>Jonathan
Guéhenneux<BR><B>Sent:</B> 11 April 2008 13:23<BR><B>To:</B> Rules Users
List<BR><B>Subject:</B> RE: [rules-users] Synch Business Object / Working
Memory<BR></FONT><BR></DIV>
<DIV></DIV>Indeed, it works but I will have to use such booleans for a lot
of rules.<BR><BR>Cause my rule flow is <SPAN
class=EC_def-example>schematically</SPAN> :<BR><BR>compute A<BR>compute
B(A)<BR>compute C(B)<BR>...<BR><BR>Perhaps I may create several ruleflows,
one per independant computing?<BR><BR>
<BLOCKQUOTE>
<HR>
Subject: RE: [rules-users] Synch Business Object / Working
Memory<BR>Date: Fri, 11 Apr 2008 12:11:32 +0100<BR>From:
manstis1@ford.com<BR>To: rules-users@lists.jboss.org<BR><BR>
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<DIV dir=ltr align=left><SPAN class=EC_EC_694480211-11042008><FONT
face=Arial color=#0000ff>I was thinking something more like
this:-</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=EC_EC_694480211-11042008><FONT
face=Arial color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=EC_EC_694480211-11042008><FONT
color=#960000><FONT color=#960000></FONT>
<P align=left><FONT color=#960000><FONT face="Courier New"
color=#0000ff>package com.sample</FONT></FONT></P>
<P align=left><FONT color=#960000><FONT face="Courier New"
color=#0000ff>import com.sample.Test<BR> <BR>rule "rule 1 -
1"<BR> salience 90<BR>
when<BR> a :
Test(<BR> computed ==
"false",<BR>
c <
15,<BR>
d >= 75)
<BR> then<BR>
System.out.println("setting e to
0");<BR>
a.setE(0);<BR>
update(a);<BR>end</FONT></FONT></P>
<P align=left><FONT color=#960000><FONT face="Courier New"
color=#0000ff></FONT></FONT> </P>
<P align=left><FONT color=#960000><FONT face="Courier New"
color=#0000ff>rule "rule 1 - 2"<BR> salience
10<BR>
when<BR> a :
Test(<BR>
computed ==
"false",<BR>
c <
15,<BR>
d >= 75)
<BR> then<BR>
System.out.println("setting e to
1");<BR>
a.setE(1);<BR>end<BR></FONT></FONT></P></FONT><FONT color=#960000>
<P align=left><FONT face=Arial color=#0000ff><SPAN
class=EC_EC_694480211-11042008>Note rule "rule 1 - 2" deliberately uses
the same patterns as rule "rule 1 -
1".</SPAN></FONT></P></FONT></SPAN></DIV>
<DIV> </DIV>
<DIV><FONT face="Courier New" color=#0000ff>package
com.sample;</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" color=#0000ff>public class <SPAN
class=EC_EC_694480211-11042008>Test</SPAN> {<BR>
<BR> private boolean computed
=false;<BR> private int c=0;<BR>
private int d=80;<BR> private int e;</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" color=#0000ff> public
String getComputed(){<BR>
if(computed)<BR>
return "true";<BR>
else<BR> return
"false";<BR> }</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" color=#0000ff> public
int getC() {<BR> return
c;<BR> }</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" color=#0000ff> public
int getD() {<BR> return
d;<BR> }</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" color=#0000ff> public
void setE(int e){<BR> this.e =
e;<BR> computed =
true;<BR> }</FONT></DIV>
<DIV><FONT face="Courier New"></FONT> </DIV>
<DIV><FONT face="Courier New" color=#0000ff>}<BR></FONT></DIV>
<DIV><SPAN class=EC_EC_694480211-11042008><FONT face=Arial
color=#0000ff>Rule "rule 1 - 1" is the only rule to run (and runs once);
the second activatino being cancelled due to the update to
"computed". Here's the audit view:-</FONT></SPAN></DIV>
<DIV><SPAN class=EC_EC_694480211-11042008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV><FONT face="Courier New"
color=#0000ff><object-stream><BR>
<list><BR>
<org.drools.audit.event.ActivationLogEvent><BR>
<activationId>rule 1 - 1
[1]</activationId><BR>
<rule>rule 1 - 1</rule><BR>
<declarations>a=com.sample.Test@67126712(1)</declarations><BR>
<type>4</type><BR>
</org.drools.audit.event.ActivationLogEvent><BR>
<org.drools.audit.event.ActivationLogEvent><BR>
<activationId>rule 1 - 2
[1]</activationId><BR>
<rule>rule 1 - 2</rule><BR>
<declarations>a=com.sample.Test@67126712(1)</declarations><BR>
<type>4</type><BR>
</org.drools.audit.event.ActivationLogEvent><BR>
<org.drools.audit.event.ObjectLogEvent><BR>
<factId>1</factId><BR>
<objectToString>com.sample.Test@67126712</objectToString><BR>
<type>1</type><BR>
</org.drools.audit.event.ObjectLogEvent><BR>
<org.drools.audit.event.ActivationLogEvent><BR>
<activationId>rule 1 - 1
[1]</activationId><BR>
<rule>rule 1 - 1</rule><BR>
<declarations>a=com.sample.Test@67126712(1)</declarations><BR>
<type>6</type><BR>
</org.drools.audit.event.ActivationLogEvent><BR>
<org.drools.audit.event.ActivationLogEvent><BR>
<activationId>rule 1 - 2
[1]</activationId><BR>
<rule>rule 1 - 2</rule><BR>
<declarations>a=com.sample.Test@67126712(1)</declarations><BR>
<type>5</type><BR>
</org.drools.audit.event.ActivationLogEvent><BR>
<org.drools.audit.event.ObjectLogEvent><BR>
<factId>1</factId><BR>
<objectToString>com.sample.Test@67126712</objectToString><BR>
<type>2</type><BR>
</org.drools.audit.event.ObjectLogEvent><BR>
<org.drools.audit.event.ActivationLogEvent><BR>
<activationId>rule 1 - 1
[1]</activationId><BR>
<rule>rule 1 - 1</rule><BR>
<declarations>a=com.sample.Test@67126712(1)</declarations><BR>
<type>7</type><BR>
</org.drools.audit.event.ActivationLogEvent><BR>
</list><BR></object-stream></FONT>
<DIV><SPAN class=EC_EC_694480211-11042008></SPAN> </DIV>
<DIV><BR></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV class=EC_EC_OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR>
<FONT face=Tahoma><B>From:</B> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <B>On Behalf Of
</B>Jonathan Guéhenneux<BR><B>Sent:</B> 11 April 2008
11:33<BR><B>To:</B> Rules Users List<BR><B>Subject:</B> RE:
[rules-users] Synch Business Object / Working
Memory<BR></FONT><BR></DIV>
<DIV></DIV>Ok, I think I understood well. I modified my business code,
now I call if<BR><BR>(wm != null)<BR>
wm.update(wm.getFactHandle(this), this);<BR><BR>each time a properties
is modified.<BR><BR>But it is worse. Rules that sould be activated
only once actually loop, even if I add the no-loop clause.<BR><BR>I
understand why they loop, assuming update = (rectact + insert), but I
dont get a solution to my problem. I just want to notify an object
changement in order to read again the properties, but I dont want to
restart the ruleflow.<BR><BR>Sorry, but I find hard to say it in
english because even in french, it's not very clear ;)<BR>
<BLOCKQUOTE>
<HR>
Subject: RE: [rules-users] Synch Business Object / Working
Memory<BR>Date: Fri, 11 Apr 2008 10:39:41 +0100<BR>From:
manstis1@ford.com<BR>To: rules-users@lists.jboss.org<BR><BR>
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<DIV dir=ltr align=left><SPAN
class=EC_EC_EC_208223809-11042008><FONT face=Arial color=#0000ff>In
essence, yes. Have a look at "update" in the manual (and a read on
Shadow Facts will probably be useful too).</FONT></SPAN></DIV><BR>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV class=EC_EC_EC_OutlookMessageHeader lang=en-us dir=ltr
align=left>
<HR>
<FONT face=Tahoma><B>From:</B> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <B>On Behalf Of
</B>Jonathan Guéhenneux<BR><B>Sent:</B> 11 April 2008
10:24<BR><B>To:</B> Rules Users List<BR><B>Subject:</B> RE:
[rules-users] Synch Business Object / Working
Memory<BR></FONT><BR></DIV>
<DIV></DIV>yes, i made a mistake. its a.setE(...) and not
c.setE(...).<BR><BR>I don't call update. If I dont call update,
properties of an object are just read one time for all
rules?<BR><BR><BR>
<BLOCKQUOTE>
<HR>
Subject: RE: [rules-users] Synch Business Object / Working
Memory<BR>Date: Fri, 11 Apr 2008 09:47:43 +0100<BR>From:
manstis1@ford.com<BR>To: rules-users@lists.jboss.org<BR><BR>
<STYLE>.ExternalClass .EC_hmmessage P {
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<DIV dir=ltr align=left><SPAN
class=EC_EC_EC_EC_287464408-11042008><FONT face=Arial
color=#0000ff>I guess the example is a simplification as "c" (in
RHS) has not been bound to a fact.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN
class=EC_EC_EC_EC_287464408-11042008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN
class=EC_EC_EC_EC_287464408-11042008><FONT face=Arial
color=#0000ff>Anyway, that aside, do you call "update" to ensure
WM knows of changes to facts otherwise properties need to be
"time-constant" which in your example they are
not.</FONT></SPAN></DIV><BR>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV class=EC_EC_EC_EC_OutlookMessageHeader lang=en-us dir=ltr
align=left>
<HR>
<FONT face=Tahoma><B>From:</B>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <B>On Behalf Of
</B>Jonathan Guéhenneux<BR><B>Sent:</B> 11 April 2008
09:34<BR><B>To:</B> Rules Users List<BR><B>Subject:</B>
[rules-users] Synch Business Object / Working
Memory<BR></FONT><BR></DIV>
<DIV></DIV>Hi,<BR><BR>I have two rules :<BR><BR>rule "rule 1 -
1"<BR> <BR> salience
90<BR> ruleflow-group
"rfg1"<BR> when<BR>
a : A(<BR>
eComputed ==
"false",<BR>
c < 15,<BR>
d >=
75)
<BR> then<BR>
c.setE(0);<BR>end<BR><BR><BR><BR>rule "rule
1 - 2"<BR><BR> salience
10<BR> ruleflow-group
"rfg1"<BR> when<BR>
a : A(<BR>
eComputed ==
"false",<BR>
c >= 15,<BR>
d >=
75)
<BR> then<BR>
c.setE(1);<BR>end<BR><BR><BR><BR>and part
of the corresponding business code :<BR><BR>public class A
{<BR><BR> ...<BR><BR>
public String getEComputed(){<BR>
if(eComputed)<BR>
return "true";<BR>
else<BR> return
"false";<BR> }<BR><BR>
...<BR><BR> public void setE(int
e){<BR> this.e =
e;<BR> eComputed =
true;<BR> }<BR><BR>
...<BR><BR>}<BR><BR><BR><BR>so, I expected that if the first
rule is activated, the second won't be. But according to my
tests, the two rule can be fired on the same object
A.<BR>While debugging, I noticed the getEComputed method was
only called once. I suppose that I should write this
:<BR><BR><BR>rule "rule 1 - 1"<BR>
<BR> salience 90<BR>
ruleflow-group "rfg1"<BR>
when<BR> a :
A(<BR>
eComputed == "false",<BR>
c < 15,<BR>
d >=
75)
<BR> then<BR>
c.setE(0);<BR>
c.setEComputed("true);<BR>end<BR><BR><BR><BR>rule "rule
1 - 2"<BR><BR> salience
10<BR> ruleflow-group
"rfg1"<BR> when<BR>
a : A(<BR>
eComputed ==
"false",<BR>
c >= 15,<BR>
d >=
75)
<BR> then<BR>
c.setE(1);<BR>
c.setEComputed("true);<BR>end<BR><BR>But I would prefer
another solution. Thanks for help.<BR><BR>
<HR>
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