strict-mode and nested object property access in drools 5.4.0.Final - can i cast?
by radai rosenblatt
hello.
I have the following 2 classes:
public class ClassWithPayload {
private String key;
private Object payload;
// getters setters etc ommitted
}
public class PayloadClass {
public String someProp;
//getters setters etc ommitted
}
and im trying to get the following rule to compile:
rule "Naive Payload Access"
when
$container : ClassWithPayload(key == "someKey", (payload != null &&
payload.someProp == "someValue"))
then
System.err.println("boom");
end
which results in the following error:
java.lang.AssertionError: Unable to Analyse Expression payload.someProp:
[Error: unable to resolve method using strict-mode:
java.lang.Object.someProp()]
[Near : {... payload.someProp ....}]
is there some way for me to cast payload.someProp to the proper class ?
(PayloadClass in this case).
this is a simplification of a bigger migration issue from drools 5.1 to 5.4
so the payload property has to remain an Object in the general case.
there's a casting syntax mentioned here
(https://community.jboss.org/wiki/DroolsPatternLanguage) but i take it its
not been implemented yet? (or maybe i just cant understand it properly?)
i've tried this:
rule "Naive Payload Access"
when
$container : ClassWithPayload(key == "someKey", (payload != null &&
payload.#PayloadClass(someProp == "someValue")))
then
System.err.println("boom");
end
but it doesnt compile:
java.lang.AssertionError: [8,51]: [ERR 101] Line 8:51 no viable alternative
at input '(' in rule "Naive Payload Access"
[0,0]: Parser returned a null Package
and if i cant cast, how can i get this sort of rule to behave as it did in
5.1.1 ?
thanks in advance for any assistance,
Radai.
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14 years, 1 month
Drools 5.0 to 5.4 upgrade
by Ben Cuthbert
After upgrading the jars to the latest version I am getting this when starting my rules
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
Caused by: java.lang.NoSuchFieldError: COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION
at org.drools.rule.builder.PatternBuilder.setInputs(PatternBuilder.java:969)
at org.drools.rule.builder.PatternBuilder.buildRelationalExpression(PatternBuilder.java:669)
at org.drools.rule.builder.PatternBuilder.buildExpression(PatternBuilder.java:634)
at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:618)
at org.drools.rule.builder.PatternBuilder.processConstraintsAndBinds(PatternBuilder.java:449)
at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:310)
at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:118)
at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:67)
at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:84)
at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:2706)
at org.drools.compiler.PackageBuilder.compileRules(PackageBuilder.java:930)
at org.drools.compiler.PackageBuilder.compileAllRules(PackageBuilder.java:839)
at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:831)
at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:467)
at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:673)
at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:45)
at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:34)
14 years, 1 month
Problem with ObjectFatory for jaxb objects
by devan.vanreenen＠gmail.com
Hi there,
I uploaded a domain model to a package on Guvnor
The imported objects contain jaxb objects from 2 different schemas
included in the package imports are
import uk.co.myapp.rules.ObjectFactory
import uk.co.myapp.rules.domain.policy.ObjectFactory
My rules objects use uk.co.myapp.rules.ObjectFactory but I am trying to
create a function which uses objects that use
uk.co.myapp.rules.domain.policy.ObjectFactory but the function fails to
compile
[calcAgeNext] [ calcAgeNext : Function Compilation error
calcAgeNext (line:-100): The import
uk.co.myapp.rules.domain.policy.ObjectFactory collides with another import
statement
]
Please assist, how can I fix this.
Thanks
Devan
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14 years, 1 month
Memory Control
by Kang Heng WU
Hi All,
The performance of JBoss Expert and Fusion is fine. The throughput of
JBoss Expert and Fusion is about 9900 and 4500 messages per second. But
we meet the following problems.
When the number of handled messages is about 500,000, the performance of
Expert is very slow. Its memory is about 300 Mbyte.
When the number of handled messages is about 300,000, the performance of
Fusion is very slow. Its memory is about 300 Mbyte.
What is the problem? How can we solve it?
Thanks in advance,
Kent
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14 years, 1 month
Disabling strict mode in 5.4
by Joe White
How do you disable strict mode in 5.4? We are using the code below and
getting strict mode exceptions. It worked in prior versions. Do you have
to use the new APIs to disable strict mode?
PackageBuilderConfiguration pkgBuilderCfg = new
PackageBuilderConfiguration();
MVELDialectConfiguration mvelConf = (MVELDialectConfiguration)
pkgBuilderCfg.getDialectConfiguration( "mvel" );
mvelConf.setStrict(false);
mvelConf.setLangLevel(5);
PackageBuilder builder = new PackageBuilder(pkgBuilderCfg);
builder.addPackageFromDrl(new StringReader(drlString));
An example exception:
1.
19:17:51,137|ERROR|drools.DroolsMgr|DroolsMgr.java|159|deployRulesFromMo
delForScope|org.apache.camel.spring.Main.main()|smf-rcp-SNAPSHOT|Failed
to deploy rules from model
2. com.recondotech.hre.rules.management.HRERulesManagmentException:
org.drools.rule.InvalidRulePackage: Unable to Analyse Expression
$existingValue.toLowerCase():
3. [Error: unable to resolve method using strict-mode:
java.lang.Object.toLowerCase()]
4. [Near : {... $existingValue.toLowerCase() ....}]
5. ^ : [Rule
name='PEL_CHANGELIST_RES.AUTH.Actual First Name']
Thanks
Joe
14 years, 1 month
referencing the incoming objects vs the matching object
by Ben Cuthbert
All
If I have an object say
class TestObject {
private String type;
private String name;
}
And I want to match opposite types so I fire in the following
insert(new TestObject("TYPE_1", "This is our type 1 object");
insert(new TestObject("TYPE_2", "This is our type 1 object");
So I want to say only match again opposite types
would this work?
rule "#999 Match"
dialect "mvel"
when
$incoming : TestObject($type: type)
$current : TestObject( type != $type)
then
insert(new String("LOGGING: incoming:" + $incoming.getType() + " current:" + $current.getType() ));
end
14 years, 1 month
