An error message
[Error: unable to resolve method using strict-mode: x.y.z()]
should not be interpreted as "Drools has looked for x.y.z() *only*, and
failed."
Given a DRL condition
foo == ...
Drools will try and locate methods getFoo(), isFoo() and foo(); and a
method must meet certain requirements such as an empty argument list and a
non-void result, and (I think - not sure) it must be sufficiently visible.
Now, what about "result" in ultra.Default.ultra.MYHTTPD?
-W
2012/1/9 Olle Martensson <olle.martensson(a)digitalroute.com>
Ignore the last post, It was a silly mistake on my part .. sorry
about
that.
It makes no difference if I use run the DTABLE without KnowledgeAgent:
Jan 9 14:08:19: Unable to Analyse Expression request == "/":
Jan 9 14:08:19: [Error: unable to resolve method using strict-mode:
ultra.Default.ultra.MYHTTPD.request()]
Jan 9 14:08:19: [Near : {... request == "/" ....}]
Jan 9 14:08:19: ^
Jan 9 14:08:19: [Line: 7, Column: 10]
Drools tries to resolve the property request with a call
to ultra.Default.ultra.MYHTTPD.request() when it should look
for ultra.Default.ultra.MYHTTPD.getRequest().
From: olle martensson <olle.martensson(a)digitalroute.com>
Reply-To: Rules Users List <rules-users(a)lists.jboss.org>
Date: Mon, 9 Jan 2012 13:25:10 +0100
To: Rules Users List <rules-users(a)lists.jboss.org>
Subject: Re: [rules-users] xls decisiontable -> unable to resolve method
using strict-mode
Thanks for your answer.
I have now tried to load the XLS without the KnowledgeAgent(see createKnowledgeBase()
below).
This time I got class loading problems( see stack trace below).
This only happens when I load a XLS decision table, If I load a DRL rules
file it runs fine without classloading issues.
I use a custom classloader that is configured with the KnowledgeBaseConfiguration,
I can see that drools is trying to load the rule classes from the custom
classloader when I run DTABLE but not when I run DRL.
From the stacktrace it seems as if it's using CompositeClassLoader though.
### STACKTRACE ###
java.lang.ClassNotFoundException: Unable to load
classA_rules_test.Rule_print_the_incoming_query_9
at org.drools.util.CompositeClassLoader.loadClass:110
at
org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass:540
at java.lang.ClassLoader.loadClass:247
at
A_rules_test.Rule_print_the_incoming_query_9DefaultConsequenceInvoker.evaluate
at org.drools.common.DefaultAgenda.fireActivation:1091
at org.drools.common.DefaultAgenda.fireNextItem:1029
at org.drools.common.DefaultAgenda.fireAllRules:1251
at org.drools.common.AbstractWorkingMemory.fireAllRules:708
at org.drools.common.AbstractWorkingMemory.fireAllRules:672
at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules:218
### CREATION OF KNOWLEDGEBASE ###
private void createKnowledgeBase()
{
KnowledgeBaseConfiguration kBaseConfig = KnowledgeBaseFactory
.newKnowledgeBaseConfiguration(null, context
.getClassLoader());
kBaseConfig.setOption(EventProcessingOption.STREAM);
//kBaseConfig.setOption(MultithreadEvaluationOption.YES);
//kBaseConfig.setOption(MaxThreadsOption.get(Runtime.getRuntime().availableProcessors()
* 2));
KnowledgeBase kBase = KnowledgeBaseFactory
.newKnowledgeBase(kBaseConfig);
KnowledgeBuilderConfiguration bconf = KnowledgeBuilderFactory
.newKnowledgeBuilderConfiguration(null,
context.getClassLoader());
bconf.setProperty("drools.dialect.java.compiler",
"ECLIPSE");
bconf.setProperty("drools.dialect.java.lngLevel", "1.6");
DecisionTableConfiguration dtableconfiguration =
KnowledgeBuilderFactory.newDecisionTableConfiguration();
dtableconfiguration.setInputType( DecisionTableInputType.XLS );
PackageBuilderConfiguration pconf = (PackageBuilderConfiguration)
bconf;
pconf.setClassLoaderCacheEnabled(true);
MVELDialectConfiguration conf =
(MVELDialectConfiguration)pconf.getDialectConfiguration("mvel");
conf.setStrict(false);
String compilerDumpDir = context.getCompilerDumpDir();
if (compilerDumpDir != null && !compilerDumpDir.isEmpty())
{
pconf.setDumpDir(new File(compilerDumpDir));
}
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(kBase, bconf);
kbuilder.add(ResourceFactory.newFileResource(
"/tmp/templatetest.xls"),
ResourceType.DTABLE,
dtableconfiguration);
}
From: Michael Anstis <michael.anstis(a)gmail.com>
Reply-To: Rules Users List <rules-users(a)lists.jboss.org>
Date: Mon, 9 Jan 2012 09:18:51 +0100
To: Rules Users List <rules-users(a)lists.jboss.org>
Subject: Re: [rules-users] xls decisiontable -> unable to resolve method
using strict-mode
Have you tried load the XLS into a KnowledgeBase without using a
KnowledgeAgent?
Trying to narrow down where the issue might be will help (everyone)
tremendously.
On 5 January 2012 16:40, ollem <olle.martensson(a)digitalroute.com> wrote:
> Hello!
>
> I'm using a knowledgeagent to point out a changeset XML which contains the
> following DTABLE:
>
> ...
> <resource source='file:/../templatetest.xls' type='DTABLE' />
> ...
>
> when I compile I get the following error:
>
> Unable to Analyse Expression request == "/":
> [Error: unable to resolve method using strict-mode:
> ultra.Default.ultra.MYHTTPD.request()]
> [Near : {... request == "/" ....}]
> ^
> [Line: 7, Column: 10] : [Rule name='print the incoming query_9']
>
> The weird this is that MYHTTPD class is a javabean and contains getRequest
> and setRequest methods.
> notice that it tries a no getter method
> ultra.Default.ultra.MYHTTPD.request().
> If I do the same logic from a normal DRL rules file it works fine.
> MYHTTPD is generated so I cannot past the source here, but it's correct
> and
> as I mentioned working in DRL files.
>
> this is how the XSL file looks like:
>
> RuleSet A rules test
> Import ultra.Default.ultra.MYHTTPD
>
> RuleTable print the incoming query
> CONDITION ACTION
> MYHTTPD
> request System.out.println($param);
> Matcher Logger
> / "webserver root"
>
> Anybody who knows what this is about?
>
> Thanks // Olle
>
>
>
>
>
>
> --
> View this message in context:
>
http://drools.46999.n3.nabble.com/xls-decisiontable-unable-to-resolve-met...
> Sent from the Drools: User forum mailing list archive at
Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
>
https://lists.jboss.org/mailman/listinfo/rules-users
>
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users