java.lang.OutOfMemoryError: Java heap space
by vdelbart
Hello,
In my tests of the 4.0.3, I have some : java.lang.OutOfMemoryError.
So, I try a simple test with 10.000 sequential execution of 1 rule with no
context and just a workingmemorylogger and I have the error :
java.lang.OutOfMemoryError: Java heap space
My code is :
public class ExecReglesMemotyTest
{
private static final Reader DRL = new
InputStreamReader(ExecReglesMemotyTest.class
.getResourceAsStream("/rules/exemple.drl"));
private static final String FICHIER_LOG = "session";
/**
* @param args
*/
public static void main(String[] args)
{
try
{
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(DRL);
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(builder.getPackage());
for (int i = 0; i < 10000; i++)
{
StatefulSession session = ruleBase.newStatefulSession();
WorkingMemoryFileLogger logger = new WorkingMemoryFileLogger(session);
logger.setFileName(FICHIER_LOG);
session.fireAllRules();
logger.writeToDisk();
session.dispose();
}
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
with this rule (doesn't matter):
#created on: Fri Nov 09 15:48:45 CET 2007
package initPackage
#list any import classes here.
rule "ERG9"
when
then
end
I try this in 4.0.1, and it's working (no OutOfMemoryError)
What's the problem ?
thanks for any information,
V.
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13 years, 11 months
getting mismatched '==' error
by zeeshan
Hi !
Please find my attached Decision Table. I am getting following error...
log4j:WARN No appenders could be found for logger (com.sample.RuleRunner).
log4j:WARN Please initialize the log4j system properly.
Warning: Cell at E20 not present - adding a blank
Warning: Cannot read name ranges for Excel_BuiltIn__FilterDatabase_1 -
setting to empty
Warning: Cannot read name ranges for Excel_BuiltIn__FilterDatabase_1 -
setting to empty
Warning: Cannot read name ranges for Excel_BuiltIn__FilterDatabase_1 -
setting to empty
Exception in thread "main" org.drools.rule.InvalidRulePackage: [10,9]: [ERR
102] Line 10:9 mismatched input '==' in rule "Distribution Cost Rules_11"
[23,9]: [ERR 102] Line 23:9 mismatched input '==' in rule "Distribution Cost
Rules_12"
[36,9]: [ERR 102] Line 36:9 mismatched input '==' in rule "Distribution Cost
Rules_13"
[49,9]: [ERR 102] Line 49:9 mismatched input '==' in rule "Distribution Cost
Rules_14"
[62,9]: [ERR 102] Line 62:9 mismatched input '==' in rule "Distribution Cost
Rules_15"
[75,9]: [ERR 102] Line 75:9 mismatched input '==' in rule "Distribution Cost
Rules_16"
[88,9]: [ERR 102] Line 88:9 mismatched input '==' in rule "Distribution Cost
Rules_17"
[101,9]: [ERR 102] Line 101:9 mismatched input '==' in rule "Distribution
Cost Rules_18"
[114,9]: [ERR 102] Line 114:9 mismatched input '==' in rule "Distribution
Cost Rules_19"
[127,9]: [ERR 102] Line 127:9 mismatched input '==' in rule "Distribution
Cost Rules_20"
[140,9]: [ERR 102] Line 140:9 mismatched input '==' in rule "Distribution
Cost Rules_21"
[153,9]: [ERR 102] Line 153:9 mismatched input '==' in rule "Distribution
Cost Rules_22"
[166,9]: [ERR 102] Line 166:9 mismatched input '==' in rule "Distribution
Cost Rules_23"
[179,9]: [ERR 102] Line 179:9 mismatched input '==' in rule "Distribution
Cost Rules_24"
[192,9]: [ERR 102] Line 192:9 mismatched input '==' in rule "Distribution
Cost Rules_25"
[205,9]: [ERR 102] Line 205:9 mismatched input '==' in rule "Distribution
Cost Rules_26"
[218,9]: [ERR 102] Line 218:9 mismatched input '==' in rule "Distribution
Cost Rules_27"
[231,9]: [ERR 102] Line 231:9 mismatched input '==' in rule "Distribution
Cost Rules_28"
[244,9]: [ERR 102] Line 244:9 mismatched input '==' in rule "Distribution
Cost Rules_29"
[257,9]: [ERR 102] Line 257:9 mismatched input '==' in rule "Distribution
Cost Rules_30"
[270,9]: [ERR 102] Line 270:9 mismatched input '==' in rule "Distribution
Cost Rules_31"
[283,9]: [ERR 102] Line 283:9 mismatched input '==' in rule "Distribution
Cost Rules_32"
[296,9]: [ERR 102] Line 296:9 mismatched input '==' in rule "Distribution
Cost Rules_33"
[309,9]: [ERR 102] Line 309:9 mismatched input '==' in rule "Distribution
Cost Rules_34"
[0,0]: Parser returned a null Package
at org.drools.rule.Package.checkValidity(Package.java:471)
at
org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:481)
at org.drools.reteoo.ReteooRuleBase.addPackages(ReteooRuleBase.java:436)
at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:443)
at com.sample.RuleRunner.loadRules(RuleRunner.java:70)
at com.sample.RuleRunner.runStatelessRules(RuleRunner.java:185)
at com.sample.RuleMain.main(RuleMain.java:132)
http://drools.46999.n3.nabble.com/file/n4017627/Distribution_Factor.xls
Distribution_Factor.xls
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13 years, 11 months
Unable to find implementation for BusinessRuleProvider
by John Peterson
Hi,
I've been experimenting with the Guided Rule Editor plug-in in Eclipse.
I've built a Drools Project using the default Hello World sample
application. I've created a new "Guided Rule" in my project called
"GuidedRule.brl" and get the associated "drools.package" with it. The
rule is simple:
WHEN
THEN
System.out.println("Rule has fired");
I build the knowledge base as follows:
private static KnowledgeBase readKnowledgeBase() throws
Exception {
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource("SampleGuided.drl"),
ResourceType.BRL);
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors.size() > 0) {
for (KnowledgeBuilderError error: errors) {
System.err.println(error);
}
throw new IllegalArgumentException("Could not
parse knowledge.");
}
KnowledgeBase kbase =
KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
return kbase;
}
The only line changed is adding the resource of type BRL.
When I try to run, I get the following error:
java.lang.RuntimeException: org.drools.compiler.DroolsParserException:
org.drools.CheckedDroolsException: Unable to find implementation for
BusinessRuleProvider
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.j
ava:544)
at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.ja
va:28)
at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:41)
at com.sample.DroolsTest.main(DroolsTest.java:23)
Caused by: org.drools.compiler.DroolsParserException:
org.drools.CheckedDroolsException: Unable to find implementation for
BusinessRuleProvider
at
org.drools.compiler.PackageBuilder.addPackageFromBrl(PackageBuilder.java
:386)
at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.j
ava:470)
... 3 more
Caused by: org.drools.CheckedDroolsException: Unable to find
implementation for BusinessRuleProvider
at
org.drools.compiler.BusinessRuleProviderFactory.throwNoImplementationFou
nd(BusinessRuleProviderFactory.java:66)
at
org.drools.compiler.BusinessRuleProviderFactory.loadProvider(BusinessRul
eProviderFactory.java:42)
at
org.drools.compiler.BusinessRuleProviderFactory.getProvider(BusinessRule
ProviderFactory.java:25)
at
org.drools.compiler.PackageBuilder.addPackageFromBrl(PackageBuilder.java
:366)
... 4 more
I've tried variations to add the drools.package as a PKG type, I've had
the rules (and package) in both "com.sample" and /src/main/rules, but I
can't seem to resolve the problem. "drools.package" has been updated to
include the package name (package com.sample;) and I import the message
class as well (even though it isn't being used currently).
I suspect the issue is simple, but I haven't been able to figure it out.
Any help would be appreciated.
13 years, 11 months
Protobuf Marshaller Question (ScheduledActivation Persistence)
by Philipp Herzig
Dear developers,
I believe this is a question for Edson.
I wonder if ScheduledActivations are added to the Agenda when
unmarshalling an existing session and fired as well, e.g., non-expired
timers.
I guess that this worked with the DefaultMarshaller implementation (at
least I can see LOCs in the InputMarshaller where normal or scheduled
activations are added to the newly created agenda). I cannot find
similar code in the ProtobufMarshaller or, more precisely, the
ProtobufInputMarshaller.
I also tried to override MarshallerProvider in order to use the
DefaultMarshaller but that is obviously not-consistent
(ClassCastException) with the current codebase anymore.
Hopefully, I am doing/understanding sth. completely wrong here.
Thanks for any help regarding this issue,
Philipp
13 years, 11 months
All the values from one list must be present in other
by Suvek
I tried looking for similar posts but could not find any that fits the
requirements.
Really speaking this is a 2 part question.
What I need to do is compare 2 lists and ensure that all the fields inside
the reference list are present in passed in list.
following is the simplified version of test that I want to perform...
$requiredAddressTypes : List() from [ AddressType.BUSINESS,
AddressType.FOREIGN_BUSINESS ]
$taxpayer : Taxpayer(taxpayerType == TaxpayerType.FOREIGN_BUISINESS &&
addresses.size > 0,
$addresses : addresses)
1 - Based on the taxpayer type I need to ensure that ALL the
requiredAddressTypes must be present, how can I achieve this?
2 - is the this statement correct ? ($requiredAddressTypes : List() from [
AddressType.BUSINESS, AddressType.FOREIGN_BUSINESS ])
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13 years, 11 months
Deploy Drools in AS7 as OSGi bundles
by Dan Seaver
I'd like to use Drools as OSGi services in the JBoss Adaptive Server (version
7.1.1).
I haven't found any specifics about how to do this in the drools
documentation (or anywhere else with my google searches), so I'm attempting
to deploy the jars mentioned in the droolsjbpm-integration-docs via the
JBoss Management console. The jars are:
knowledge-api
drools-core
drools-compiler
drools-templates
drools-decisiontables
All of the jars install ok, but when I try to enable them (start the
bundles), I run into problems.
knowledge-api seems to start fine.
However, the other bundles have dependencies on drools-core.
When I try to enable drools-core, I get exceptions claiming the required
bundle, org.drools.internalapi, is missing. So, I added the following
bundle:
knowledge-internal-api.jar
Now I get the exception that package com.google.protobuf is missing.
*Any guidance on how to install drools in AS7 as OSGi services would be
greatly appreciated!*
Stack trace snippet from JBoss console when trying to deploy drools-core:
12:45:43,783 ERROR [org.jboss.osgi.framework.internal.FrameworkEventsPlugin]
(MSC service thread 1-2) Framework ERROR:
org.osgi.framework.BundleException: Cannot resolve bundle resModule:
[org.drools.core:5.4.0.Final]
at
org.jboss.osgi.framework.internal.ResolverPlugin.resolve(ResolverPlugin.java:157)
[jbosgi-framework-core-1.1.8.Final.jar:1.1.8.Final]
at
org.jboss.osgi.framework.internal.AbstractBundleState.ensureResolved(AbstractBundleState.java:551)
[jbosgi-framework-core-1.1.8.Final.jar:1.1.8.Final]
at
org.jboss.osgi.framework.internal.HostBundleState.startInternal(HostBundleState.java:211)
[jbosgi-framework-core-1.1.8.Final.jar:1.1.8.Final]
at
org.jboss.osgi.framework.internal.AbstractBundleState.start(AbstractBundleState.java:494)
[jbosgi-framework-core-1.1.8.Final.jar:1.1.8.Final]
at
org.jboss.as.osgi.deployment.BundleStartTracker$1.processService(BundleStartTracker.java:144)
[jboss-as-osgi-service-7.1.1.Final.jar:7.1.1.Final]
at
org.jboss.as.osgi.deployment.BundleStartTracker$1.transition(BundleStartTracker.java:119)
[jboss-as-osgi-service-7.1.1.Final.jar:7.1.1.Final]
at
org.jboss.msc.service.ServiceControllerImpl.invokeListener(ServiceControllerImpl.java:1416)
[jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at
org.jboss.msc.service.ServiceControllerImpl.access$2700(ServiceControllerImpl.java:49)
[jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at
org.jboss.msc.service.ServiceControllerImpl$ListenerTask.run(ServiceControllerImpl.java:1954)
[jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
[rt.jar:1.6.0_26]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
[rt.jar:1.6.0_26]
at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_26]
Caused by: org.jboss.osgi.resolver.XResolverException: Unable to resolve
Module[org.drools.core:5.4.0.Final]: missing requirement
[Module[org.drools.core:5.4.0.Final]] package; (package=com.google.protobuf)
at
org.jboss.osgi.resolver.felix.FelixResolver.resolveInternal(FelixResolver.java:117)
[jbosgi-resolver-felix-1.0.13.Final.jar:1.0.13.Final]
at
org.jboss.osgi.resolver.spi.AbstractResolver.resolve(AbstractResolver.java:149)
[jbosgi-resolver-spi-1.0.13.Final.jar:1.0.13.Final]
at
org.jboss.osgi.framework.internal.ResolverPlugin.resolve(ResolverPlugin.java:155)
[jbosgi-framework-core-1.1.8.Final.jar:1.1.8.Final]
... 11 more
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13 years, 12 months
Stateless session with pre-inserted facts
by Chris Selwyn
I have a need to execute a set of rules on a complicated hierarchical data structure where some of the rules use a bunch of reference facts.
At the moment I load the reference facts and the hierarchical structure into the WM of a stateless session on every execution.
There are a lot of reference facts and they start off in the same state on every execution though they can get modified as part of the rules execution.
I would really like to be able to save the WM after inserting the reference facts so that I can start each execution with those facts pre-loaded and thereby avoid loading them each time.
Is this an easy thing to do? Could someone give me some pointers?
Chris
13 years, 12 months
Inserting String Object and accessing it in Guvnor
by Manasi
Hi,
Currently in my application I want to insert a *String object* into a
StatefulKnowledgeSession.
I don't want to insert object of any *User defined type* ,as input parameter
contains only one string parameter.
I am able to insert String object into my StatefulKnowledgeSession, but
don't know how to access it in Guvnor , as I want to use value from this
string object to satisfy one of the rule in my Guvnor decision table. I want
to use this String object as one of the condition columns in Guvnor.
Below is some code I am using:
StatefulKnowledgeSession session = kbase.newStatefulKnowledgeSession();
String myString = new String("department");
session.insert(myString);
session.fireAllRules();
Is there any way to access this String object in Guvnor?
Thanks,
Manasi.
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13 years, 12 months
function in drools
by thano
HI,
I am new to drools. I would like to know if it is possible to define a
function in drools or something similar. For example, Rule 1 would call
another rule say Rule 2 and pass some parameters to be analysed with in Rule
2. I need to know if this can be achieved purely in drools.
many thanks
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13 years, 12 months
