problem escaping quote in eval.
by samlotti
Hello,
I'm trying to construct a rule in drool V4 that contains an eval with a
literal string that may contain embedded quotes. I've tried escaping the
quote but get the error below. Note that the \" works outside an eval.
rule "evalList2"
when
Var( eval( "tt".equals("t\"t")))
then
System.out.println( "evalList2" );
end
Error:
java.lang.NullPointerException:
at
org.drools.rule.PredicateConstraint.createContextEntry(PredicateConstraint.java:201)
at org.drools.reteoo.AlphaNode.createMemory(AlphaNode.java:230)
...
It looks like a change was made to V3 to fix this but doesnt appear to work
in V4, does anyone know how to construct this type of rule?
Thanks in advance
Sam
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17 years, 9 months
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Sequential Mode with Sequential or Dynamic Agenda
by Shyam, Pallav (MSCIBARRA)
Hi All,
I am trying to figure out when to use Sequential Mode.
Also, what does SequentailAgenda.SEQUENTIAL and SequentialAgenda.DYNAMIC
means.
rule "asset > 1000"
when
s : Security( status == "NOT VALIDATED", country == "USA", asset
> 1000)
then
s.setStatus("VALIDATED");
end
rule "asset < 1000 and no_of_shares > 150000"
when
s : Security( status == "NOT VALIDATED", country == "USA", asset
< 1000, no_of_share > 150000)
then
s.setStatus("VALIDATED");
end
There are 50 more such rules.
90000 such Security objects will be inserted in WM as facts and the
rules applied. The moment a Security becomes VALIDATED all other
Activations on the same fact should be cancelled.
Is this example a candidate for Sequential Mode.
What difference will it make if I put the set the SequentialAgenda to
SEQUENTIAL or DYNAMIC.
Thanks.
Pallav Shyam
MSCI Barra
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17 years, 9 months
- 1
- 0