OK,
modified the function to read
function boolean doSomething(String s) {
System.out.println(s);
return true;
}
and the .dsl file to read
eval(doSomething("{s}") == true);
but we get
org.drools.rule.InvalidRulePackage: Rule Compilation error The method
eval(boolean) is undefined for the type MandatoryStreet1AddressNotNull_0
at org.drools.rule.Package.checkValidity(Package.java:370)
at org.drools.reteoo.RuleBaseImpl.addPackage(RuleBaseImpl.java:247)
at testing.FunctionTest.testFunction(FunctionTest.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(
RemoteTestRunner.java:478)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(
RemoteTestRunner.java:344)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(
RemoteTestRunner.java:196)
On 4/4/06, Michael Neale <[EMAIL PROTECTED]> wrote:
>
> anything used in the LHS (when) must return a boolean, and be used inside
> an
> eval() etc... it can't just appear freeform in a when. Slap an eval()
> around
> the doSomething() (it will need to return true) and see if that works for
> you.
>
> On 4/4/06, Paul Smith <[EMAIL PROTECTED]> wrote:
> >
> > I was basically trying a few different constructs but the following is
> not
> > valid:
> >
> > package testing
> >
> > import testing.AddressDetail
> >
> > expander crm.dsl
> >
> > function void doSomething(String s) {
> > System.out.println(s);
> > }
> >
> > rule "MandatoryStreet1AddressNotNull"
> >
> > when
> > The first street address line is empty
> > Send 'in when' to doSomething <-- If I take this line out then
> > it's
> > legal but with it in I get the stack trace below
> > then
> > Add the message that the first street address cannot be empty
> > Send 'do something' to doSomething
> > end
> >
> >
> >
> -------------------------------------------------------------------------------------------------------------------------
> > org.drools.rule.InvalidRulePackage: Unable to resolve ObjectType
> > 'doSomething'
> >
> > at org.drools.rule.Package.checkValidity(Package.java:370)
> > at org.drools.reteoo.RuleBaseImpl.addPackage(RuleBaseImpl.java:247)
> > at testing.FunctionTest.testFunction(FunctionTest.java:26)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> > at java.lang.reflect.Method.invoke(Unknown Source)
> > at junit.framework.TestCase.runTest(TestCase.java:154)
> > at junit.framework.TestCase.runBare(TestCase.java:127)
> > at junit.framework.TestResult$1.protect(TestResult.java:106)
> > at junit.framework.TestResult.runProtected(TestResult.java:124)
> > at junit.framework.TestResult.run(TestResult.java:109)
> > at junit.framework.TestCase.run(TestCase.java:118)
> > at junit.framework.TestSuite.runTest(TestSuite.java:208)
> > at junit.framework.TestSuite.run(TestSuite.java:203)
> > at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(
> > RemoteTestRunner.java:478)
> > at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(
> > RemoteTestRunner.java:344)
> > at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(
> > RemoteTestRunner.java:196)
> >
> > The .dsl file is as follows:
> >
> > #Customer Relationship Management domain specific language.
> > [when]The first street address line is empty=$ad : AddressDetail(street1
> > ==
> > "")
> > [when]The postcode is empty=$ad : AddressDetail(postcode == " ")
> > [then]Add the message that the first street address cannot be empty=
> > System.out.println("Enter the street address dummy");
> > Send '{s}' to doSomething=doSomething("{s}");
> >
> >
> > I realise it's a bit of dumb example but for arguments sake, doSomething
> > may
> > be performing a bit more of a complex evaluation.
> >
> > On 4/4/06, Michael Neale <[EMAIL PROTECTED]> wrote:
> > >
> > > my mistake, you should be able to call it, there are a fair few
> > > integration
> > > tests that cover that (Mark tells me).
> > >
> > >
> > >
> > > On 4/4/06, Michael Neale <[EMAIL PROTECTED]> wrote:
> > > >
> > > > When in the "when" (he heee) do you want to call it? The only places
> > are
> > > > in an eval, or predicate or return value... I am not sure if they
> are
> > > > allowed in there by design.
> > > >
> > > >
> > > > On 4/4/06, Paul Smith <[EMAIL PROTECTED]> wrote:
> > > > >
> > > > > I don't seem to be able to call functions from within the 'when'
> > > clause
> > > > > of a
> > > > > drl in Drools 3.0. Is this by design or a flaw?
> > > > >
> > > > >
> > > >
> > >
> > >
> >
> >
>
>
