unable to determine operator for symbol [before]
by vladimiro
Hi all,
I'm building a KnowledgeBase with KnowledgeAgent and a precompiled
rule package. When the package contains a rule using temporal operators
such "after" or "before" I get the exception listed at the end of this
message.
I'm using the latest version of drools 5 and my runtime configuration
includes the following libraries:
* drools-core - the rule engine itself.
* drools-api
* mvel2-2.0.10
* joda-time-1.6
the rule causing such a behaviour is:
rule 'Test2'
dialect 'mvel'
when
u1:UserType( firstName=="UserA" )
lie:UserEventType( event=="Login", user.id==u1.id)
loe:UserEventType(event=="Logout", user.id==u1.id, this before lie)
then
Message msg = new Message();msg.setText("Test2
fired");driver.getMessages().add(msg);
end
java.lang.RuntimeException: KnowledgeAgent exception while trying to
deserialize KnowledgeDefinitionsPackage
at
org.drools.agent.impl.KnowledgeAgentImpl.rebuildResources(KnowledgeAgentImpl.java:418)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:120)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:109)
at
info.vladimiro.tesi.peservice.KnowledgeBaseService.<init>(KnowledgeBaseService.java:94)
at
info.vladimiro.tesi.peservice.KnowledgeBaseService.getInstance(KnowledgeBaseService.java:65)
at
info.vladimiro.tesi.peservice.PEListener$KBTask.run(PEListener.java:35)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)
Caused by: org.drools.RuntimeDroolsException: unable to determine
operator for symbol [before]
at
org.drools.base.evaluators.Operator.determineOperator(Operator.java:71)
at org.drools.base.evaluators.Operator.readResolve(Operator.java:106)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1033)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1728)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at org.drools.base.BaseEvaluator.readExternal(BaseEvaluator.java:53)
at ...
Can someone help? Thanks in advance.
Vladimiro Corsi
12 years, 11 months
Drools Human Task Service Persistence
by ramram
Hi All,
I have been trying to persist the Human TasK service to Oracle. And I got
the below error. Please check my persistence.xml file and the error that I
have recieved. It seems this is happening because of some oracle reserved
words are used to name the columns.
Any suggestions??? on this Topic?????
persistence.xml
============
<persistence-unit name="org.drools.task">
<class>org.drools.task.Attachment</class>
<class>org.drools.task.Content</class>
<class>org.drools.task.BooleanExpression</class>
<class>org.drools.task.Comment</class>
<class>org.drools.task.Deadline</class>
<class>org.drools.task.Comment</class>
<class>org.drools.task.Deadline</class>
<class>org.drools.task.Delegation</class>
<class>org.drools.task.Escalation</class>
<class>org.drools.task.Group</class>
<class>org.drools.task.I18NText</class>
<class>org.drools.task.Notification</class>
<class>org.drools.task.EmailNotification</class>
<class>org.drools.task.EmailNotificationHeader</class>
<class>org.drools.task.PeopleAssignments</class>
<class>org.drools.task.Reassignment</class>
<class>org.drools.task.Status</class>
<class>org.drools.task.Task</class>
<class>org.drools.task.TaskData</class>
<class>org.drools.task.SubTasksStrategy</class>
<class>org.drools.task.OnParentAbortAllSubTasksEndStrategy</class>
<class>org.drools.task.OnAllSubTasksEndParentEndStrategy</class>
<class>org.drools.task.User</class>
<properties>
<property name="hibernate.dialect"
value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.connection.driver_class"
value="oracle.jdbc.OracleDriver"/>
<property name="hibernate.connection.url"
value="jdbc:oracle:thin:@DB_URL" />
<property name="hibernate.connection.username" value="drools"/>
<property name="hibernate.connection.password" value="drools"/>
<property name="hibernate.connection.autocommit" value="false" />
<property name="hibernate.max_fetch_depth" value="3"/>
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
Error
============
Hibernate: select task0_.id as col_0_0_, deadline1_.id as col_1_0_,
deadline1_.date as col_2_0_ from Task task0_, Deadline deadline1_ where
(deadline1_.id in (select start
deadl2_.id from Deadline startdeadl2_ where
task0_.id=startdeadl2_.Deadlines_StartDeadLine_Id) or deadline1_.id in
(select enddeadlin3_.id from Deadline enddeadlin3_ where
task0_.id=enddeadlin3_.Deadlines_EndDeadLine_Id)) and
deadline1_.escalated=0 order by deadline1_.date
javax.persistence.PersistenceException:
org.hibernate.exception.SQLGrammarException: could not execute query
at
org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:629)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:73)
at org.drools.task.service.TaskService.<init>(TaskService.java:65)
at org.drools.task.service.TaskService.<init>(TaskService.java:48)
at com.fp.taskservice.RunTaskService.start(RunTaskService.java:45)
at
com.fp.taskservice.RunTaskService.contextInitialized(RunTaskService.java:28)
at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at
org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:924)
at
org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:887)
at
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at
org.apache.catalina.startup.HostConfig.start(HostConfig.java:1147)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at
org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:516)
at
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: org.hibernate.exception.SQLGrammarException: could not execute
query
at
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2223)
at
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
at
org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at
org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:64)
... 28 more
Caused by: java.sql.SQLException: ORA-01747: invalid user.table.column,
table.column, or column specification
at
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:316)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:282)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:639)
at
oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:185)
at
oracle.jdbc.driver.T4CPreparedStatement.execute_for_describe(T4CPreparedStatement.java:503)
at
oracle.jdbc.driver.OracleStatement.execute_maybe_describe(OracleStatement.java:965)
at
oracle.jdbc.driver.T4CPreparedStatement.execute_maybe_describe(T4CPreparedStatement.java:535)
at
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1051)
at
oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2984)
at
oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3026)
at
org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
at org.hibernate.loader.Loader.doQuery(Loader.java:674)
at
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
... 36 more
java.lang.Exception
at com.fp.taskservice.RunTaskService.start(RunTaskService.java:50)
at
com.fp.taskservice.RunTaskService.contextInitialized(RunTaskService.java:28)
at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at
org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:924)
at
org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:887)
at
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at
org.apache.catalina.startup.HostConfig.start(HostConfig.java:1147)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at
org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:516)
at
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
Regards,
Ram
--
View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Human-Task-Ser...
Sent from the Drools - User mailing list archive at Nabble.com.
12 years, 11 months
Rules Flow Eclipse editor
by Prafull Kumar
Hi All,
I would like to know how we can modify the Rules flow eclipse editor look and
feel and functionality. e.g. If we have a Embedded Sub-Process in the flow and
reduce the size of it, the arrows are still displayed in the main canvas. Please
see the attached snapshot for reference.
How we can fix it? also if we want to open the Embedded Sub-Process in a new
window for easy maintainability/readability of the very complex processes, how
we can achieve it?
Going forward we are also looking to create the custom editor for the nodes.
Please guide us if its possible and there is any document for this.
Note: It seems that I can not attach files in the mailing list. Let me know if
its possible to share the image.
Regards, Prafull
12 years, 11 months
Drools 5.1 - exception when trying to use incremental KB updates.
by Stephen Mcgruer
Just moved to Drools 5.1, using a Guvnor package as the base for a
Knowledge Base with incremental updating enabled. Our resource is a
Guvnor PKG. We encounter the following error when a snapshot is made:
[2010:08:224 16:08:903:debug] KnowledgeAgent: Diffing: [UrlResource
path='http://localhost:1337/drools-guvnor/org.drools.guvnor.Guvnor/package/TEST...']
[2010:08:224 16:08:935:debug] BinaryResourceDiffProducerImpl:
Comparing [Rule name=Resource Null-Checker, agendaGroup=MAIN,
salience=0, no-loop=false] against [Rule name=Resource Null-Checker,
agendaGroup=MAIN, salience=0, no-loop=false]
Exception in thread "Thread-30" org.drools.RuntimeDroolsException:
java.lang.reflect.InvocationTargetException : [Rule name=Resource
Null-Checker, agendaGroup=MAIN, salience=0, no-loop=false]
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:56)
at
org.drools.agent.impl.BinaryResourceDiffProducerImpl.diff(BinaryResourceDiffProducerImpl.java:63)
at
org.drools.agent.impl.KnowledgeAgentImpl.incrementalBuildResources(KnowledgeAgentImpl.java:785)
at
org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:586)
at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:185)
at
org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:1106)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:47)
... 6 more
Caused by: java.lang.RuntimeException: this MVELReturnValueExpression
must be compiled for equality
at
org.drools.base.mvel.MVELReturnValueExpression.equals(MVELReturnValueExpression.java:123)
at
org.drools.rule.ReturnValueRestriction.equals(ReturnValueRestriction.java:306)
at
org.drools.rule.ReturnValueConstraint.equals(ReturnValueConstraint.java:121)
at java.util.Arrays.equals(Unknown Source)
at org.drools.rule.OrConstraint.equals(OrConstraint.java:132)
at java.util.AbstractList.equals(Unknown Source)
at org.drools.rule.Pattern.equals(Pattern.java:317)
at org.drools.rule.GroupElement.equals(GroupElement.java:273)
at
org.drools.agent.impl.BinaryResourceDiffProducerImpl.compareRules(BinaryResourceDiffProducerImpl.java:258)
at
org.drools.agent.impl.BinaryResourceDiffProducerImpl.visitRule(BinaryResourceDiffProducerImpl.java:117)
... 11 more
The rule in question is quite straight-forward, works on the initial
load up and worked in 5.0.1 fine. It is not the rule that was just
changed. If I remove that rule, another is just substituted in its
place in the error message.
What might be causing this? If you need more information, please ask.
Stephen
--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
12 years, 11 months
Authorisation of Guvnor users on Glassfish
by Chris Selwyn
I am using Guvnor 2.1.1 on Glassfish 2.1 and mostly it seems to work
very well.
However, I am now looking to setup authentication of users to the Guvnor
server and this is where I am finding problems.
I tried writing a class with an "authenticate" method to authenticate
against a Glassfish realm using ProgrammaticLogin but (as far as I can
tell) this class is not being used by Guvnor.
Looking at the source, Guvnor appears to only use the
org.jboss.seam.security.Identity.authenticate method which uses only the
jaas-config-name value from the components.xml file.
So I then tried setting the jaas-config-name to "fileRealm" (which
exists in Glassfish's default login.conf) but now I get
"javax.security.auth.login.LoginException: No credentials." logged in my
server.log (and the user get a fail message, naturally).
Has anyone out there managed to configure Guvnor to authenticate against
a Glassfish realm or JAAS context and would be willing to help me through?
Chris Selwyn
12 years, 12 months
Expert versus Expert
by Charles SOUILLARD
Hi all,
i'm a newbie on Drools and want to understand the general architecture of
the solution.
Is it true that Drools Guvnor helps managing rules definition but it is not
a rule server ? Meaning we can define, update, archive, test... rules but
not execute them in Guvnor?
My understanding is that Drools expert is the engine, let's say the rules
server) on which one rules are executed. Is there any graphical tool to
manage this engine? I mean to add/remove rules, access a dashboard... Is it
drools-server.war?
Is there any pre installed runtime environment with the engine and - if
there is one - the management console?
I tried drools-install.zip with ant install.demo but it doesn't work for
me...
Thanks a lot for your feedback, I'm waiting to test it!
Charles Souillard
13 years
KnowledgeAgent and Guvnor restart
by Gerret Hansper
Hello,
I have got an issue with the KnowledgeAgent that seems not to survive a Guvnor
restart. The scenario is as follows:
* We use Drools 5.0
* On our application server we create a KnowledgeAgent
applying a ChangeSet that points to a package binary on a separate Guvnor server
like so:
SystemEventListenerFactory.setSystemEventListener(new
SystemEventLogger());
ResourceFactory.getResourceChangeNotifierService().start();
ResourceFactory.getResourceChangeScannerService().start();
KnowledgeAgent agent =
KnowledgeAgentFactory.newKnowledgeAgent(workflowName);
agent.applyChangeSet(changeSet);
* Creating the kbase, registering globals and running sessions works fine.
* We shut down Guvnor (or the connection goes down, this was how we spotted the
problem) and restart it after a minute
* We then try to run sessions from the
same agent as above via
kagent.getKnowledgeBase().newStatefulKnowledgeSession();
which returns a ksession, but then setting a global we get
java.lang.RuntimeException: Unexpected global [log]
at
org.drools.common.AbstractWorkingMemory.setGlobal(AbstractWorkingMemory.java:5
50)
at
org.drools.impl.StatefulKnowledgeSessionImpl.setGlobal(StatefulKnowledgeSessio
nImpl.java:284)
>From the debugger I can see that indeed the ruleBase's globals map is empty. The
SystemEventLogger indicates that the KnowledgeAgent unsubscribes from its
resource when Guvnor is down and rebuilds its kbase. Also, it stops scanning the
resource and does not find it once Guvnor is up again. (See log snippet below).
Wouldn't it be better in these cases to keep the resource as is in memory and
try to rescan? I figure that as long as the resource is specified in the
changeSet it should be considered part of the kbase and not be removed if it
cannot be found.
For the time being, does anyone have a suggestion how to avoid these problems?
We could catch the RuntimeException and recreate the KnowledgeAgent, but perhaps
there is a better way?
Thanks, Gerret
-- SystemEventLog --
# Guvnor is up here
07:58:01,881 ResourceChangeScanner attempt to scan 1 resources
07:58:02,209 ResourceChangeScanner thread is waiting for 60
07:58:15,067 ResourceChangeScanner attempt to scan 1 resources
# Guvnor goes down here
07:58:16,738 ResourceChangeScanner removed resource=[UrlResource
path='http://localhost:7080/drools-
guvnor/org.drools.guvnor.Guvnor/package/com.foo.bar/LATEST']
07:58:16,738 ResourceChangeNotification received ChangeSet notification
07:58:16,738 ResourceChangeScanner thread is waiting for 60
07:58:16,738 ResourceChangeNotification processing ChangeSet
07:58:16,738 ResourceChangeNotification ChangeSet removed resource=[UrlResource
path='http://localhost:7080/drools-
guvnor/org.drools.guvnor.Guvnor/package/com.foo.bar/LATEST'] for
listener=org.drools.agent.impl.KnowledgeAgentImpl@1053d6d
07:58:16,738 ResourceChangeNotification ChangeSet removed resource=[UrlResource
path='http://localhost:7080/drools-
guvnor/org.drools.guvnor.Guvnor/package/com.foo.bar/LATEST'] for
listener=org.drools.agent.impl.KnowledgeAgentImpl@b71c17
07:58:16,738 KnowledgeAgent received ChangeSet changed notification
07:58:16,738 KnowledgeAgent received ChangeSet changed notification
07:58:16,738 KnowledgAgent applying ChangeSet
07:58:16,738 ResourceChangeNotification thread is waiting for queue update
07:58:16,738 KnowledgAgent applying ChangeSet
07:58:16,738 KnowledgeAgent unsubscribing from resource=[UrlResource
path='http://localhost:7080/drools-
guvnor/org.drools.guvnor.Guvnor/package/com.foo.bar/LATEST']
07:58:16,738 ResourceChangeNotification unsubscribing
listener=org.drools.agent.impl.KnowledgeAgentImpl@1053d6d to
resource=[UrlResource path='http://localhost:7080/drools-
guvnor/org.drools.guvnor.Guvnor/package/com.foo.bar/LATEST']
07:58:16,738 KnowledgeAgent rebuilding KnowledgeBase using ChangeSet
07:58:16,738 KnowledgeAgent unsubscribing from resource=[UrlResource
path='http://localhost:7080/drools-
guvnor/org.drools.guvnor.Guvnor/package/com.foo.bar/LATEST']
07:58:16,738 ResourceChangeNotification unsubscribing
listener=org.drools.agent.impl.KnowledgeAgentImpl@b71c17 to
resource=[UrlResource path='http://localhost:7080/drools-
guvnor/org.drools.guvnor.Guvnor/package/com.foo.bar/LATEST']
07:58:16,738
KnowledgeAgent rebuilding KnowledgeBase using ChangeSet
07:58:16,738 KnowledgeAgent new KnowledgeBase now built and in use
07:58:16,738 KnowledgeAgent new KnowledgeBase now built and in use
07:59:02,202 ResourceChangeScanner attempt to scan 0 resources
07:59:02,202 ResourceChangeScanner thread is waiting for 60
# Guvnor back up here
07:59:16,731 ResourceChangeScanner attempt to scan 0 resources
07:59:16,731 ResourceChangeScanner thread is waiting for 60
--
Nur noch bis 31.01.2010: DSL-Komplettpaket für 16,99 Euro/mtl.!*
http://portal.gmx.net/de/go/dsl02
13 years
Can Drools Flow Persistence Work without JTA
by Rui Tang
Hi list,
According to the documents and some test cases, I found that Drools Flow
persistence examples have to work with JTA to enable transaction management.
Is there some way to not use JTA as my transaction manager?
--
唐睿
13 years
mvn failed to install under drools-5.1.1-examples.zip
by Aman
When I tried to run mvn install, it gave me following error-
[INFO] Scanning for projects...
Downloading:
http://repo1.maven.org/maven2/org/drools/drools/5.1.1/drools-5.1.1.pom
[INFO] Unable to find resource 'org.drools:drools:pom:5.1.1' in repository
central (http://repo1.maven.org/maven2)
[INFO]
------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO]
------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).
Project ID: null:drools-examples:pom:null
Reason: Cannot find parent: org.drools:drools for project:
null:drools-examples:pom:null for project null:drools-examples:pom:null
[INFO]
------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.reactor.MavenExecutionException: Cannot find parent:
org.drools:drools for project: null:drools-examples:pom:null for project
null:drools-examples:pom:null
at
org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:404)
at
org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:272)
at
org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at
org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at
org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at
org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.project.ProjectBuildingException: Cannot find
parent: org.drools:drools for project: null:drools-examples:pom:null for
project null:drools-examples:pom:null
at
org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultM
avenProjectBuilder.java:1396)
at
org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMav
enProjectBuilder.java:823)
at
org.apache.maven.project.DefaultMavenProjectBuilder.buildFromSourceFileInter
nal(DefaultMavenProjectBuilder.java:508)
at
org.apache.maven.project.DefaultMavenProjectBuilder.build(DefaultMavenProjec
tBuilder.java:200)
at
org.apache.maven.DefaultMaven.getProject(DefaultMaven.java:604)
at
org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:487)
at
org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:391)
... 12 more
Caused by: org.apache.maven.project.ProjectBuildingException: POM
'org.drools:drools' not found in repository: Unable to download the artifact
from any repository
org.drools:drools:pom:5.1.1
from the specified remote repositories:
central (http://repo1.maven.org/maven2)
for project org.drools:drools
at
org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(
DefaultMavenProjectBuilder.java:605)
at
org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultM
avenProjectBuilder.java:1392)
... 18 more
Caused by: org.apache.maven.artifact.resolver.ArtifactNotFoundException:
Unable to download the artifact from any repository
org.drools:drools:pom:5.1.1
from the specified remote repositories:
central (http://repo1.maven.org/maven2)
at
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultAr
tifactResolver.java:228)
at
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultAr
tifactResolver.java:90)
at
org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(
DefaultMavenProjectBuilder.java:558)
... 19 more
Caused by: org.apache.maven.wagon.ResourceDoesNotExistException: Unable to
download the artifact from any repository
at
org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWag
onManager.java:404)
at
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultAr
tifactResolver.java:216)
... 21 more
[INFO]
------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Sat Oct 02 16:37:04 EDT 2010
[INFO] Final Memory: 1M/4M
[INFO]
------------------------------------------------------------------------
13 years
