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@gmail.com<mailto:michael.anstis@gmail.com>>
Reply-To: Rules Users List
<rules-users@lists.jboss.org<mailto:rules-users@lists.jboss.org>>
Date: Mon, 9 Jan 2012 09:18:51 +0100
To: Rules Users List
<rules-users@lists.jboss.org<mailto:rules-users@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@digitalroute.com<mailto:olle.martensson@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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