[rules-users] xls decisiontable -> unable to resolve method using strict-mode
Olle Martensson
olle.martensson at digitalroute.com
Mon Jan 9 08:58:08 EST 2012
I've been trying to set MVEL strict mode to false to see if it works better but it does not seem to take:
PackageBuilderConfiguration pconf = new PackageBuilderConfiguration(context.getClassLoader());
((JavaDialectConfiguration)
pconf.getDialectConfiguration("java")).setCompiler(JavaDialectConfiguration.ECLIPSE);
((JavaDialectConfiguration)
pconf.getDialectConfiguration("java")).setJavaLanguageLevel("1.5");
((MVELDialectConfiguration)
pconf.getDialectConfiguration("mvel")).setStrict(false);
((MVELDialectConfiguration)
pconf.getDialectConfiguration("mvel")).setLangLevel(5);
From: olle martensson <olle.martensson at digitalroute.com<mailto:olle.martensson at digitalroute.com>>
Reply-To: Rules Users List <rules-users at lists.jboss.org<mailto:rules-users at lists.jboss.org>>
Date: Mon, 9 Jan 2012 14:18:42 +0100
To: Rules Users List <rules-users at lists.jboss.org<mailto:rules-users at lists.jboss.org>>
Subject: Re: [rules-users] xls decisiontable -> unable to resolve method using strict-mode
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().
[cid:C7EB7185-C8D8-4A4E-B4D3-2CFC16ED2368]
From: olle martensson <olle.martensson at digitalroute.com<mailto:olle.martensson at digitalroute.com>>
Reply-To: Rules Users List <rules-users at lists.jboss.org<mailto:rules-users at lists.jboss.org>>
Date: Mon, 9 Jan 2012 13:25:10 +0100
To: Rules Users List <rules-users at lists.jboss.org<mailto:rules-users at 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 at gmail.com<mailto:michael.anstis at gmail.com>>
Reply-To: Rules Users List <rules-users at lists.jboss.org<mailto:rules-users at lists.jboss.org>>
Date: Mon, 9 Jan 2012 09:18:51 +0100
To: Rules Users List <rules-users at lists.jboss.org<mailto:rules-users at 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 at digitalroute.com<mailto:olle.martensson at 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
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