Eclipse plugin with latest Galileo
by chris richmond
Is anyone successfully using the IDE plugin with the latest Galileo version
of Eclipse. I cannot get it to debug using Galileo(my previous post
concerning debug as) I tested instlaling the IDE plugin by using the IDE
update site link on the following versions. I normally use the Galileo, but
tried the other for troubleshooting this....
Galileo standard
Galileo EE
Ganymede Standard
The plugin appears to install just fine with all three, and the
DroolsTest.java that is added when I create a new Drools project runs fine
in all three. However, I am only able to debug as Drools application using
Ganymede. So is it simply not possible to use the IDE update link with
the latest Eclipse(Galileo)?
Thanks,
Chris
16 years, 3 months
Regarding Drools Rules Engine
by Anupindi RaviShankar
Hi All,
We are evaluating Drools rules engine for one of the clients. The client has
given some parameters based on which evaluation needs to be done.
We were not able to get this information from Drools site. So need your help
in getting this information.
• Number of transactions Drools Engine can support. Can it support around
1-1.5 million transactions.
• How can we introduce enforcement levels, overriding authority etc.?
• How can the controlling class get to know which rule was fired and which
was overridden ?
• Does the rule engine support the tracking of different rule types?
Can you please provide your updates on the same.
Thanks
Ravi
16 years, 3 months
Error in the USER TASK work handler
by ramram
Hi all
I have a problem with the User Task work Item when I have an in and out
parameters. I am using a simple scenario just to reproduce the Error and
exception and the scenario is:
Start -> user task with parameter (in, out) -> End
I am having the following exception once I execute the Task:
ERROR [STDERR] java.lang.NullPointerException
ERROR [STDERR] at
org.drools.marshalling.impl.MarshallerReaderContext.resolveClass(MarshallerReaderContext.java:78)
ERROR [STDERR] at java.io.ObjectInputStream.readNonProxyDesc(Unknown
Source)
ERROR [STDERR] at java.io.ObjectInputStream.readClassDesc(Unknown
Source)
ERROR [STDERR] at java.io.ObjectInputStream.readOrdinaryObject(Unknown
Source)
ERROR [STDERR] at java.io.ObjectInputStream.readObject0(Unknown Source)
ERROR [STDERR] at java.io.ObjectInputStream.readObject(Unknown Source)
ERROR [STDERR] at
org.drools.marshalling.impl.InputMarshaller.readWorkItem(InputMarshaller.java:829)
ERROR [STDERR] at
org.drools.persistence.processinstance.WorkItemInfo.getWorkItem(WorkItemInfo.java:86)
ERROR [STDERR] at
org.drools.persistence.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:90)
ERROR [STDERR] at
org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:46)
ERROR [STDERR] at
org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:12)
ERROR [STDERR] at
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:254)
ERROR [STDERR] at
org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.completeWorkItem(CommandBasedStatefulKnowledgeSession.java:118
ERROR [STDERR] at
org.drools.process.workitem.wsht.CommandBasedWSHumanTaskHandler$GetResultContentResponseHandler.execute(CommandBasedWSHumanTa
va:297)
ERROR [STDERR] at
org.drools.task.service.TaskClientHandler.messageReceived(TaskClientHandler.java:139)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:752)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:49)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:832)
ERROR [STDERR] at
org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl.flush(ProtocolCodecFilter.java:379)
ERROR [STDERR] at
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:173)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:49)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:832)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$HeadFilter.messageReceived(DefaultIoFilterChain.java:616)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
ERROR [STDERR] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:408)
ERROR [STDERR] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:578)
ERROR [STDERR] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:540)
ERROR [STDERR] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:532)
ERROR [STDERR] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:58)
ERROR [STDERR] at
org.apache.mina.core.polling.AbstractPollingIoProcessor$Worker.run(AbstractPollingIoProcessor.java:857)
ERROR [STDERR] at
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
ERROR [STDERR] at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
ERROR [STDERR] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
ERROR [STDERR] at java.lang.Thread.run(Unknown Source)
INFO [STDOUT] [2009:12:337 09:12:671:exception] Uncaught exception on
client
INFO [STDOUT] java.lang.RuntimeException: Could not rollback transaction
INFO [STDOUT] at
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:283)
INFO [STDOUT] at
org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.completeWorkItem(CommandBasedStatefulKnowledgeSession.java:118
INFO [STDOUT] at
org.drools.process.workitem.wsht.CommandBasedWSHumanTaskHandler$GetResultContentResponseHandler.execute(CommandBasedWSHumanTa
va:297)
INFO [STDOUT] at
org.drools.task.service.TaskClientHandler.messageReceived(TaskClientHandler.java:139)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:752)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:49)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:832)
INFO [STDOUT] at
org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl.flush(ProtocolCodecFilter.java:379)
INFO [STDOUT] at
org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:173)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:49)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:832)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain$HeadFilter.messageReceived(DefaultIoFilterChain.java:616)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:414)
INFO [STDOUT] at
org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:408)
INFO [STDOUT] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:578)
INFO [STDOUT] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:540)
INFO [STDOUT] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:532)
INFO [STDOUT] at
org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:58)
INFO [STDOUT] at
org.apache.mina.core.polling.AbstractPollingIoProcessor$Worker.run(AbstractPollingIoProcessor.java:857)
INFO [STDOUT] at
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
INFO [STDOUT] at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
INFO [STDOUT] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
INFO [STDOUT] at java.lang.Thread.run(Unknown Source)
INFO [STDOUT] Caused by: java.lang.RuntimeException: Could not execute
command
INFO [STDOUT] at
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:280)
INFO [STDOUT] ... 24 more
INFO [STDOUT] Caused by: java.lang.NullPointerException
INFO [STDOUT] at
org.drools.marshalling.impl.MarshallerReaderContext.resolveClass(MarshallerReaderContext.java:78)
INFO [STDOUT] at java.io.ObjectInputStream.readNonProxyDesc(Unknown
Source)
INFO [STDOUT] at java.io.ObjectInputStream.readClassDesc(Unknown
Source)
INFO [STDOUT] at java.io.ObjectInputStream.readOrdinaryObject(Unknown
Source)
INFO [STDOUT] at java.io.ObjectInputStream.readObject0(Unknown Source)
INFO [STDOUT] at java.io.ObjectInputStream.readObject(Unknown Source)
INFO [STDOUT] at
org.drools.marshalling.impl.InputMarshaller.readWorkItem(InputMarshaller.java:829)
INFO [STDOUT] at
org.drools.persistence.processinstance.WorkItemInfo.getWorkItem(WorkItemInfo.java:86)
INFO [STDOUT] at
org.drools.persistence.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:90)
INFO [STDOUT] at
org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:46)
INFO [STDOUT] at
org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:12)
INFO [STDOUT] at
org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:254)
INFO [STDOUT] ... 24 more
Regards
Ram
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16 years, 3 months
asynchronous processing in drools flow
by Todd Pagni
Is there an out of the box way to start a drools flow asynchronously? I
am running drools flow 5.1.0.M1 in JBoss and have a long running process
to execute. The application that initiates the flow must start the flow
asynchronously so the applications web request can complete in a timely
manner. I don't want to create my own threads in the app server and
would like to avoid introducing JMS, but wasn't sure if there are any
other good options?
Thanks,
Todd
16 years, 3 months
multithreading MinaTaskServer
by Todd Pagni
Is there a way or plan to make the MinaTaskServer multithreaded? If the
server is only executing in a single thread it may not be robust enough
for the human task transaction volumes we are looking to process.
If mina only executes in one thread is there a more robust way to
process human tasks without implementing your own task server?
I am running drools flow 5.1.0.M1 in JBoss 5.
Thanks,
Todd
16 years, 3 months
Testing
by chris richmond
Hello,
My emails stopped getting through from my other emal address and as some
other users had helped me discover, the filtering/spam or whatever has
prevented me from asking questions in the forumn, so I am testing from
another email.
Thanks,
Chris
16 years, 3 months
MVEL wows: what does "importInjectionRequired" mean?
by Barry Kaplan
I'm at my wits end. I have two simple rules in two separate packages, they
are of the form:
rule1:
import somepackage.*
global somepackage.Foo foo
...
then
foo.doSomething(...)
end
rule2:
import otherpackage.*
global otherpackage.Gar gar
...
then
gar.doSomething(...)
end
When mvel is resolving foo for rule1 it does so via
org.mvel2.compiler.CompiledExpression#getValue:line-104
When resolving gar for rule2 it does so via
org.mvel2.compiler.CompiledExpression#getValue:line-107
The difference is that for rule1 the variable 'importInjectionRequired' is
true, which results in 'foo' being resolved, but for rule2 this variable is
false which results in 'gar' not being resolved.
I suspecting that its important that the packages and the global instances
are added dynamically *after* the session is created (in scala'ish dialect):
val session = createSessionUsingNoPackages
val kbuilder1 = KnowledgeBuilderFactory.newKnowledgeBuilder
kbuilder1.add("rule1.drl", ResourceType.DRL)
session.knowledgeBase addKnowledgePackages (kbuilder1.getKnowledgePackages)
session addGlobal ("foo", foo)
val kbuilder2 = KnowledgeBuilderFactory.newKnowledgeBuilder
kbuilder2.add("rule2.drl", ResourceType.DRL)
session.knowledgeBase addKnowledgePackages (kbuilder2.getKnowledgePackages)
session addGlobal ("Gar", gar)
If just one or the other packages are added the session, then either
variable is resolved. But if both are added the session the 'gar' is not
resolved. It does not matter what order they added to the session. I can
also try to access 'gar' in rule1 and it also will not be resolved.
I guess I really don't expect any help on this, but I will boil it down to a
simple test and submit it to jira
-barry
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16 years, 3 months
Drool Rule Error with "or not" condition
by Shah, Malay
Hi All,
I have the following drool rule that has "or not" under Entity Block. Basically, the rule tries to check if there either exists an entity object EtsExecutionOrderXref_core00 with the given conditions, or the entity does not exist at all with some other conditions.
dialect "mvel"
rule "Legacy ETSDB Rule"
when
EtsExecutionOrderHist_core0:EtsExecutionOrderHist_core(customerOrFirm != "0")
EtsExecutionOrderXref_core00:
(
EtsExecutionOrderXref_core
(
entityOID == EtsExecutionOrderHist_core0.entityOID , entityRID == EtsExecutionOrderHist_core0.entityRID , entityVID == EtsExecutionOrderHist_core0.entityVID , referenceID != "2" && referenceIDType == "orderSubCapacity"
)
or not(EtsExecutionOrderXref_core
(
entityOID == EtsExecutionOrderHist_core0.entityOID , entityRID == EtsExecutionOrderHist_core0.entityRID , entityVID == EtsExecutionOrderHist_core0.entityVID , referenceIDType == "orderSubCapacity"
))
)
then
end
But, while compiling the rule, I am getting the following errors:
org.drools.compiler.DroolsParserException: [ERR 101] Line 22:16 no viable alternative at input 'entityOID' in rule "Legacy ETSDB Rule" in pattern not,
org.drools.compiler.DroolsParserException: [ERR 102] Line 22:68 mismatched input ',' expecting '(' in rule "Legacy ETSDB Rule" in pattern EtsExecutionOrderHist_core0.entityOID,
org.drools.compiler.DroolsParserException: [ERR 102] Line 22:122 mismatched input ',' expecting '(' in rule "Legacy ETSDB Rule" in pattern EtsExecutionOrderHist_core0.entityOID in pattern EtsExecutionOrderHist_core0.entityRID,
org.drools.compiler.DroolsParserException: [ERR 102] Line 22:176 mismatched input ',' expecting '(' in rule "Legacy ETSDB Rule" in pattern EtsExecutionOrderHist_core0.entityOID in pattern EtsExecutionOrderHist_core0.entityRID in pattern EtsExecutionOrderHist_core0.entityVID]
I think the rule is correct, but am not able to figure out these compilation errors. Could anybody please comment on why this would happen?
Thanks
Malay Shah
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16 years, 3 months
Testing individual rules
by Asif Iqbal
Hi,
This is general question, is it possible to test individual rules in a rules file? And using what, I am familiar with JUnit, but have seen Fit being used in examples.
regards
16 years, 3 months
