According to the Janino Jira in http://jira.codehaus.org/browse/JANINO-72
autoboxing was supported in version 2.5.6. It looks like drools 4.0.4
uses
Janino 2.5.10. The test below uses a DRL file that would require
autoboxing and
it produces a runtime exception from Janino. Does anybody know of a way
to make
a Janino/Drools Autoboxing combination work? I have to use autoboxing
and I
would very much prefer to use Janino over MVEL for drl compilation.
Thanks for your help,
Joe
The information below includes the stack trace,
the Input
java file, the DRL, and a snippet for the drools setup and execution.
The
exception is easy to produce and the info below should be enough to
reproduce
it.
/********************INPUT JAVA OBJECT
*******************************/
package
com.sample;
public class
Input {
public Double
valOne;
public Double
valTwo;
public Double
getValOne() {
return valOne;
}
public void
setValOne(Double
valOne) {
this.valOne =
valOne;
}
public Double
getValTwo() {
return valTwo;
}
public void
setValTwo(Double
valTwo) {
this.valTwo =
valTwo;
}
}
/********************END
*******************************/
/********************DRL
*******************************/
package
test;
import
com.sample.Input
dialect "java"
rule "test
293"
when
inputVal : Input()
then
//double
valOne = 0;
double
deductibleapplied =inputVal.valOne*inputVal.valTwo;
end
/********************END
*******************************/
/********************DROOLS SETUP
*******************************/
…
PackageBuilderConfiguration
pkgBuilderCfg = new
PackageBuilderConfiguration();
JavaDialectConfiguration
javaConf =
(JavaDialectConfiguration) pkgBuilderCfg.getDialectConfiguration( "java" );
javaConf.setCompiler(
JavaDialectConfiguration.JANINO
);
PackageBuilder
builder = new
PackageBuilder(pkgBuilderCfg);
…
Input
input = new Input();
input.setValOne(10.0);
input.setValTwo(1000.0);
workingMemory.insert(
input );
workingMemory.fireAllRules();
/********************END
*******************************/
/******************** STACK TRACE
*******************************/
java.lang.RuntimeException:
SNO: Conversion
failed
at
org.codehaus.janino.UnitCompiler.binaryNumericPromotion(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compileArithmeticOperation(UnitCompiler.java)
at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.access$39(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler$7.visitBinaryOperation(UnitCompiler.java)
at
org.codehaus.janino.Java$BinaryOperation.accept(Java.java)
at
org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.access$12(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler$2.visitLocalVariableDeclarationStatement(UnitCompiler.java)
at
org.codehaus.janino.Java$LocalVariableDeclarationStatement.accept(Java.java)
at
org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.access$3(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler$2.visitBlock(UnitCompiler.java)
at
org.codehaus.janino.Java$Block.accept(Java.java)
at
org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler$1.visitPackageMemberClassDeclaration(UnitCompiler.java)
at
org.codehaus.janino.Java$PackageMemberClassDeclaration.accept(Java.java)
at
org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java)
at
org.codehaus.janino.UnitCompiler.compileUnit(UnitCompiler.java)
at
org.codehaus.janino.Compiler.compile(Compiler.java)
at
org.drools.commons.jci.compilers.JaninoJavaCompiler.compile(JaninoJavaCompiler.java:174)
at
org.drools.commons.jci.compilers.AbstractJavaCompiler.compile(AbstractJavaCompiler.java:51)
at
org.drools.rule.builder.dialect.java.JavaDialect.compileAll(JavaDialect.java:332)
at
org.drools.compiler.DialectRegistry.compileAll(DialectRegistry.java:60)
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:308)
at
org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167)
at
com.sample.SimpleTester.readRule(SimpleTester.java:62)
at com.sample.SimpleTester.main(SimpleTester.java:23)