Should have mentioned that the drl now looks like this:
package testing
import testing.AddressDetail
expander crm.dsl
function boolean doSomething(String s) {
System.out.println(s);
return true;
}
rule "MandatoryStreet1AddressNotNull"
when
Get the street address
and the first street address line is empty
Send 'in when' to doSomething
then
Add the message that the first street address cannot be empty
Send 'do something' to doSomething
end
On 4/4/06, Paul Smith <[EMAIL PROTECTED]> wrote:
>
> 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?
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
