Importing drl into BRMS
by Ojwang Wilson O
Need help on how one can do the following within drools 4.0.7 BRMS:
1. import DRL files into drools 4.0.7 BRMS
2. build package (*.pkg) from the imported DRL
3. Deploy the package (*.pkg) to a specified URL.
Thanks in advance for your professional help.
Regards
Wilson
15 years, 3 months
I am not sure if this is Bug in Guvnor - Please help
by Ashish Soni
Hi All ,
I have defined a function name *join *using guvnor guided editor which is
mentioned below
function String join(String firstname , String lastname) {
return firstname + " " + lastname;
}
then i created rule using guided editor which make use of the function and
when i validate the rule is validates successfully
rule "persontest"
dialect "mvel"
when
p : Person( firstname != "" && lastname != "" )
then
p.setFullname( join(firstname,lastname) );
end
now i created a test scenario for testing the rule which is like below
GIVEN
insert Person
firstname =Sujit
lastname =Sharma
EXPECT
fullname = Sujit Sharma
and when i run the test i am getting below error
[p] field [fullname] was [] expected [Sujit Sharma ]
Please help.
Regards,
Ashish
15 years, 3 months
Re: retract the items from accumulate
by niraj manandhar
Dear Sir
Thanks for the answer by the way is there any way to slove my free item
problem .
I want to make a decison table in excel where my client will fill in the
item and free item list as
Purchased ITem No of purchase Free Item
No of free
==========================================================
Pen 2
Rubber 1
Pen 5
Pencil 1
Pen 10
Pencil 3
Pen 12
Pencil 4
Ink bottle 3
Sticker 1
Ink bottle 5
Sticker 2
Ink Bottle 10
Sticker 5
When a customer buys 19 pen then
his free item will be
4 pencil (due to first 12 pens)
5 pencil (due to remaining 5 pens)
1 rubber (due to 2 pens)
I have been trying to write the rule and fit into excel since from 1 week
but due to my limited knowledge of drl and decision tables in excel it is
taking a lot of time than writing code with lookup table and JAVA if else
Please help me to slove this riddle
Thanks
Niraj
15 years, 3 months
Getting facts from external source using 'from' and parametrized method call
by Przemysław Różycki
Hi,
could I ask for some advice, please, how to use a parametrized method
call to get some data using 'from' element in LHS.
To be more precise, I would like to do something like this:
rule "My Rule"
when
$fact : Fact( ) from factSource.getSomeFacts("a","b","c")
then
// do something
end
where factSource is for example some global and
getSomeFacts(String,String,String) is a parametrized method that returns
some array of Fact objects.
Unfortunately, when I try to launch the following rule I have an error:
Exception in thread "main" org.mvel.PropertyAccessException: unable to
resolve property: factSource.getSomeFacts("a","b","c")
at
org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:295)
at
org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:110)
at
org.mvel.ast.VariableDeepPropertyNode.getReducedValueAccelerated(VariableDeepPropertyNode.java:26)
at
org.mvel.ast.PropertyASTNode.initializePropertyNode(PropertyASTNode.java:70)
at
org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(PropertyASTNode.java:24)
at org.mvel.MVELRuntime.execute(MVELRuntime.java:90)
at org.mvel.CompiledExpression.getValue(CompiledExpression.java:111)
at org.mvel.MVEL.executeExpression(MVEL.java:252)
at
org.drools.base.dataproviders.MVELDataProvider.getResults(MVELDataProvider.java:55)
at org.drools.reteoo.FromNode.assertTuple(FromNode.java:68)
at
org.drools.reteoo.SingleTupleSinkAdapter.createAndPropagateAssertTuple(SingleTupleSinkAdapter.java:55)
at
org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:116)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:22)
at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:162)
at org.drools.reteoo.Rete.assertObject(Rete.java:175)
at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:192)
at
org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.execute(ReteooWorkingMemory.java:181)
at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1312)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:915)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:883)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:684)
at com.sample.DroolsTest6.main(DroolsTest6.java:29)
Caused by: java.lang.NullPointerException
at
org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:530)
at
org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:261)
... 21 more
Documentation says:
"The from Conditional Element allows users to specify a source for
patterns to reason over. This allows the engine to reason over data not
in the Working Memory. This could be a sub-field on a bound variable or
the results of a method call."
so I assume that it is possible to do what I want. If not, could I ask
for an advice of some workaround, please?
Best regards,
--
Przemysław Różycki
IT Architect
AMG.net, A Bull Group Company
ul. Łąkowa 29
90-554 Łódź
www.amg.net.pl
15 years, 3 months
retract the items from accumulate
by niraj manandhar
Can i retract the objects from accumulate function
rule "Brand base free Item "
salience 10
when
brand_total:Number(doubleValue >=1500)
from accumulate ( sa:SLS_SALES_DTLS(
PK!=null,
PK.ITEM_ID.BRAND_CD.BRAND_CD=="N00"
) , init ( double single_total=0; ),
action (single_total=single_total+(sa.getTRN_QTY()*
sa.getPK().getITEM_ID().getSALES_TO_BASE_CONV()
// I want to retract the sa over here
);
),
result (single_total ) );
then
double item_discounted=brand_total.doubleValue()/ 1500;
System.out.println("The discount given qty "+item_discounted+" multiplied
slot 10");
double item_left=brand_total.doubleValue()%1500;
if(item_left>=1)
{
doit(item_left,"N00");
}
end
15 years, 3 months
Help writing DRL
by niraj manandhar
I have following condition
buying 3 pen gives 1 free pencil
buying 5 pen gives 1 free rubber
buying 10 pen gives 1 free chocolate
so if some one buys 19 pen then his free items will be
1 chocolate due to 10 pen
1 rubber due to remaining (19-10) pen
1 pencil due to remaining (9-5) pen
I have objects of sales_details where trnqty is the quantity purchased how
to calculate the free items using drl
15 years, 3 months
Cannot load Dialect..
by Kiran Narasareddy
Hi,
I am a drools 4.0.7 user.
I am working on a drools project. The code works fine when I run it as a
standalone application in Eclipse(all the rules fire as required)
However , when I deploy the same code as a web service on Axis2, I get as
exception as follows :-
* org.drools.RuntimeDroolsException: Unable to load dialect
'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel'*
I have included all the necessary Libraries in the archive file( .aar) of my
service. Still it is giving me a exception .
The exception occurs when I try to compile my Decision table in the
following line of code...
final SpreadsheetCompiler *converter* = new SpreadsheetCompiler();
final String drl1 = converter.compile( excelFile, InputType.XLS );
....The SpreadsheetCompiler object i.e. *converter* is created while the
web service is running ie itz not null. hence i think the drools library is
accesible to the service..
Can please anyone help me out here....
Thanks in advance...
Kiran Narasareddy
Computers make very fast, very accurate mistakes.
15 years, 3 months
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15 years, 3 months
guvnor fails deployment to jboss 5.0
by howard goldberg
described in email from j michael dean on 12/19--didn't see an entry in
jira.
Is there a workaround? or just stick with 4.2.3. for now
Howard
15 years, 3 months
