Ruleflow and persistence
by vdelbart
Hello,
I have a problem with this ruleflow :
http://www.nabble.com/file/p12593732/ruleflow.jpg
This two rules package doesn't work in the same way :
First package :
#created on: 29 août 2007
package reductionExample1
import model.*
rule "global rule"
ruleflow-group "WorldReduction"
#include attributes such as "salience" here...
when
$p:Product(year == 2006)
then
#actions
System.out.println("Global rule");
System.out.println("$p.getPrice() : " + $p.getPrice());
$p.setPrice($p.getPrice()*1.1);
end
rule "local rule"
ruleflow-group "StateReduction"
#include attributes such as "salience" here...
when
$p:Product(year < 2007, $price: price)
then
#actions
System.out.println("Local rule");
System.out.println("$price : " + $price);
System.out.println("$p.getPrice() : " + $p.getPrice());
$p.setPrice($price * 1.2);
end
I have :
Before : Product(name=Adidas, year=2006, price=100.0)
Global rule
$p.getPrice() : 100.0
Local rule
$price : 110.00000000000001
$p.getPrice() : 110.00000000000001
After : Product(name=Adidas, year=2006, price=132.0)
Second package :
#created on: 29 août 2007
package reductionExample1
import model.*
rule "global rule"
ruleflow-group "WorldReduction"
#include attributes such as "salience" here...
when
$p:Product(year == 2006, $priceGlobal: price)
then
#actions
System.out.println("Global rule");
System.out.println("$price : " + $priceGlobal);
System.out.println("$p.getPrice() : " + $p.getPrice());
$p.setPrice($p.getPrice()*1.1);
end
rule "local rule"
ruleflow-group "StateReduction"
#include attributes such as "salience" here...
when
$p:Product(year < 2007, $price: price)
then
#actions
System.out.println("Local rule");
System.out.println("$price : " + $price);
System.out.println("$p.getPrice() : " + $p.getPrice());
$p.setPrice($price * 1.2);
end
I have :
Before : Product(name=Adidas, year=2006, price=100.0)
Global rule
$price : 100.0
$p.getPrice() : 100.0
Local rule
$price : 100.0
$p.getPrice() : 110.00000000000001
After : Product(name=Adidas, year=2006, price=120.0)
What is the normal execution (for me the first way) and why is different ?
thanks,
vdelbart
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19 years
org.drools.base.accumulators.CountAccumulateFunction error with Drools BRMS 4.0.1
by pentarious
Hi,
I'm using Drools BRMS 4.0.1 and when I try to build a package including some
rules using an accumulate construct, I get the following error:
"org.drools.base.accumulators.CountAccumulateFunction" (This message is
shown in an alert).
This is a simple rule (Technical DRL rule) to reproduce the error (just put
this in an empty package and try to build the whole package):
rule "test"
salience 0
dialect "java"
when
Number() from accumulate ( i : Object(), count( i ) )
then
System.out.println(1);
end
The rule is correctly validated but building the whole package leads to the
above error. Is it a bug?
Regards,
CG
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19 years
stateless session getQueryResults
by Mark Proctor
Is anyone using StatelessSession.getQueryResults(). Realised that it was
a mistake adding that. the idea of StatelessSessionResult is you have
something that is potentially serialisable. To execute that method then
you have to have a refernce to the entire WorkingMemory and that must
reference the RuleBase, so it suddenly makes that a little heavy. I'm
thinking of removing that method and also combining it with the ability
to specify only which inserted objects and set globals are exported as
part of a StatelessSessionResult, if not specified all inserted objects
will be made available and no globals.
I'm not sure that querries make any sense on a stateless session anyway,
only stateful.
This is an API change (removing getQueryResult), and if people are using
it I will leave as is, but I'm not sure if anyone will be using that
anyway. What do people think?
Mark
19 years
Build Error from SVN Trunk
by Steven Waldren
I just downloaded the trunk from the subversion repository. When I
try to build with maven, I get a build failure during the JSR-94 API
Module building after starting the [surefire:test]. (Attached is the
log from maven with the error at the bottom)
Any idea what the problem is?
Thanks,
Steven
19 years
java.lang.ClassNotFoundException: org.drools.brms.client.rpc.Rule Asset
by Baron, Stephen
Hi,
Im trying to run 4.00.01 of the JBoss Rules BRMS using Java 1.5.0_06 on a
Windows XP box and browsing using Firefox. Everything seems to work fine
until I create a Business Rule and try clicking 'View Source' or 'Validate'
when I get the following exception:
ERROR 07-09 13:20:54,953 (ApplicationContext.java:log:675) Exception
while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException:
java.lang.ClassNotFoundException: org.drools.brms.client.rpc.RuleAsset
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserial
ize(ServerSerializationStreamReader.java:156)
at
com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader.readOb
ject(AbstractSerializationStreamReader.java:61)
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserial
izeValue(ServerSerializationStreamReader.java:70)
at
org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.processCall(GWTRemoteSer
viceServlet.java:285)
at
org.jboss.seam.remoting.gwt.GWTRemoteServiceServlet.doPost(GWTRemoteServiceS
ervlet.java:181)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:173)
at org.jboss.seam.web.ContextFilter.doFilter(ContextFilter.java:56)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126
)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105
)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:107)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:869)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processC
onnection(Http11BaseProtocol.java:664)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.jav
a:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWo
rkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:684)
at java.lang.Thread.run()V(Unknown Source)
Caused by: java.lang.ClassNotFoundException:
org.drools.brms.client.rpc.RuleAsset
at
java.lang.Class.forName(Ljava.lang.String;ZLjava.lang.ClassLoader;)Ljava.lan
g.Class;(Unknown Source)
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserial
ize(ServerSerializationStreamReader.java:135)
... 24 more
Any help would be greatly appreciated.
Kind Regards
Steve
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19 years
parsing error using accumulate
by Isabelle Hupont
Hi!
I'm integrating Weka with Drools v.4 and I have a parsing error while trying
to read the following DRL rule:
rule "calculate average"
when
$inst : Instance()
$media : Double(double value > 50000)
from accumulate($value : inst.classValue()
average($value))
then
System.out.println(media );
end
I have the following error:
org.drools.compiler.DroolsParserException: Unknown error while parsing. This
is a bug. Please contact the Development team.
at org.drools.compiler.DrlParser.compile(DrlParser.java:180)
at org.drools.compiler.DrlParser.parse(DrlParser.java:61)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:158)
at com.sample.DroolsTest.readRule(DroolsTest.java:67)
at com.sample.DroolsTest.main(DroolsTest.java:24)
What I am doing wrong?
Thx
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19 years
Deploying BRMS package
by kissro＠lidp.com
Hello,
After building a rules package in BRMS, there is an option to create a
'Snapshot' and/or 'Download binary package'. If you select download,
where do you put the .pkg file? How do you deploy the .pkg file and get
your application to access it? The documentation does not say where to
download the file to or how to use it. Could someone tell me.
Thanks,
Rod
19 years
storing array in variable!
by vamshidhar reddy chitti
hi
how to store array of string values in a variable and later checking for some value to be in that array..
for example
String[] str = new String[] { "Spouse", "Annuitant", "Nominee" };
am trying to store like this
$test1 : Object($example : str)
is it right?
and i need to compare like Object2 ( x in ($example) )
my rule doesnt fire..
please help me..
tnx
vamshi
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19 years
