Help
by grupo cft ing sostware
hello to all,
I need help when running a rule of example I come up against the following
error:
*
org.drools.RuntimeDroolsException*: Unable to load dialect '
org.drools.rule.builder.dialect.java.JavaDialectConfiguration:*java'*
*at* org.drools.compiler.PackageBuilderConfiguration.*buildDialectRegistry*(
*PackageBuilderConfiguration.java:138*)
at org.drools.compiler.PackageBuilderConfiguration.init(*
PackageBuilderConfiguration.java:114*)
at org.drools.compiler.PackageBuilderConfiguration.<init>(*
PackageBuilderConfiguration.java:87*)
at org.drools.compiler.PackageBuilder.<init>(*PackageBuilder.java:122*)
at org.drools.compiler.PackageBuilder.<init>(*PackageBuilder.java:88*)
at com.sample.DroolsTest.readRule(*DroolsTest.java:50*)
at com.sample.DroolsTest.main(*DroolsTest.java:21*)
Caused by: *java.lang.RuntimeException*: The Eclipse JDT Core jar is not in
the classpath
at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler
(*JavaDialectConfiguration.java:98*)
at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(*
JavaDialectConfiguration.java:56*)
at org.drools.compiler.PackageBuilderConfiguration.buildDialectRegistry(*
PackageBuilderConfiguration.java:134*)
... 6 more
*I will be very grateful if they help me*
16 years, 8 months
Cryptic error message: org.drools.compiler.FunctionError@191394e
by Scott Reed
I have converted my 3.1 DRL to 4.0, think I have the dependencies worked out (removed
antlr-30ea8.jar) and now I am getting a cryptic error message from the DRL compiler:
Rules.getRuleBase. org.drools.compiler.FunctionError@191394e
org.drools.rule.InvalidRulePackage: org.drools.compiler.FunctionError@191394e
at org.drools.rule.Package.checkValidity(Package.java:412)
at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:292)
...
Am I missing something with the plugin, is my DRL so badly munged the compiler can't explain what's
wrong, or what?
Thanks,
Scott
16 years, 8 months
4.0 Dependencies
by Scott Reed
1) Please tell me where I can find the definitive list of dependencies for the 4.0 release.
The manual lists them but also says to look for README_DEPENDENCIES.txt in the lib dir but I do not
see it.
I am getting the following error:
Exception in thread "main" java.lang.NoSuchMethodError:
org.antlr.runtime.DFA.unpackEncodedString(Ljava/lang/String;)[S
at org.drools.lang.DRLParser.<clinit>(DRLParser.java:7223)
at org.drools.compiler.DrlParser.getParser(DrlParser.java:204)
at org.drools.compiler.DrlParser.parse(DrlParser.java:60)
at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:158)
My classpath has antlr-3.0ea8.jar.
2) What am I missing?
16 years, 8 months
Tutorial
by Saleem Lakhani
Hi,
I am wondering how someone gets start with writing DRLs & DSLs without
any tutorials or guidelines. If there is one then please share it with
me.
It is urgent. I am using Drools 4.0.
Saleem Lakhani
16 years, 8 months
Eclispe Auto-Complete Problem
by dpark
Is it only me, but when I use the Eclipse plugin and when I auto-complete I
get every permutation of what I've specified in my dsl.
For example:
In dsl I've registered the following:
[condition]There is no calculated fact called "{name}"=not
CalculatedFact(name == "{name}")
In drl when I auto-complete in a condition, I get the following
possibilities:
* There
* There is
* There is no
* There is no calculated
* There is no calculated fact
* There is no calculated fact called
* There is no calculated fact called "{name}"
Ideally, all i want to show up is the last statement. Is there any way to
filter out all of the ones above it?
Dave
--
View this message in context: http://www.nabble.com/Eclispe-Auto-Complete-Problem-tf4285666.html#a12199559
Sent from the drools - user mailing list archive at Nabble.com.
16 years, 8 months
Function Call in LHS
by Rafael Alcemar
Hello guys! This is my first question for the list. I've defined a function
in my DRL file to evaluate if a user can do a specific operation in my
system. This function returns a boolean result. My question is if I can use
this function in the test of LHS.
For example:
rule "Cliente pode alugar"
when
eval(teste)
then
System.out.println("XXXXXX");
end
function boolean teste( ) {
return true;
}
Please, if anybody has some help, send me.
Thanks!
Rafael Alcemar
16 years, 8 months
Trouble with shadow proxies, insertLogical, and WorkingMemoryListener
by A Gattiker
I have an interface called InducedFact. Rules use insertLogical to
insert instances of implementing classes, and a working memory
listener allows me to control the application when those facts are
inserted and removed.
However in some cases, the fields of my InducedFact class have been
changed to null when my event listener's 'objectRetracted' method is
called, although they have been properly initialized upon
'objectInserted'. Even the debugger could not see when the fields were
set back to null. I have not been able to create a simple test case to
reproduce it, however.
Excluding the implementing classes from shadow proxying does solve the
problem. However it is a bit inconvenient to have to give the full
list of implementing classes (passing the interface name with the code
below doesn't work). Also, the rule base may have been serialized, and
I would have to recreate it every time I create a new InducedFact
implementing class.
RuleBaseConfiguration rbConf = new RuleBaseConfiguration();
rbConf.setShadowProxy(true);
rbConf.setShadowProxyExcludes(InducedFact.class.getName());
Wouldn't it be more flexible to configure the working memory elsewhere
than in the rule base configuration?
Thanks in advance for your insights.
16 years, 8 months
