Hi All,The difference between failing or not stems from using insert() and retract() versus insertLogical(). The first two make the package fail to load, the latter seems to work fine.
I can create a package that *does* load, by adding a cast to the full class name in the rule:
rule "clean up possible slot lock, when no longer to schedule"
when
$p : PossibleSlotLock( $ship; )
not ToScheduleLock( mover == $ship )
then
retract( (vcm.planner.lock.standard.PossibleSlotLock)$p );
end
and by stating the full class name in the inserts, like so:
insert(new vcm.planner.lock.standard.PossibleSlotLock($ship, $chamber,
$side, $schedule, $eta, $schedule.getTick(), "existing"));
This way the loading works fine.So this is less about loading compiled files and more about class loading for insert() and retract().
Hope this helps! I have also managed to reproduce this in a simple case. jar attached.Notice that when I change rule "now use it B" to have RHS "insert( new Person( $christianName, null ) );" the loading works. I can imagine the compiler / loader just assumes that a class with constructor Person( String, ExternalClass ) may become available at run time?
Regards, Willem On 10/25/2012 11:32 AM, Willem van Asperen wrote:
Hi All, To add to this, I've done some further testing. It seems that the particular order in which each of the compiled packages is loaded does not matter. Not all packages that declare local classes fail... I have now found the two that do. I cannot see any striking differences between the ones that do and do not fail... What I did find is that removing all the rules from the failing packages (so only leaving the imports and declare) seems to remove this issue! I'll dig 'round some more. Regards, Willem On 10/25/2012 01:45 AM, Wolfgang Laun wrote:Folks, it seems that something new in 5.5.0.CR1 sabotages the ingestion of compiled packages. -W ---------- Forwarded message ---------- From: Willem van Asperen <wil...@van.asperen.org> Date: Thu, 25 Oct 2012 00:04:32 +0200 Subject: Re: [rules-users] ClassNotFound on class defined in drl with 5.5.0.CR1 To: Wolfgang Laun <wolfgang.l...@gmail.com>, Rules Users List <rules-us...@lists.jboss.org> Hi, This was a good idea. Here is my test case: public class TestCompilation { private final static FileFilter RULES_FILES_FILTER = new FileFilter() { @Override public boolean accept(File pathname) { return pathname.getName().endsWith(".drl"); } }; private void testCompilation() throws FileNotFoundException, IOException { KnowledgeBuilderConfiguration configuration = KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(); KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(configuration); File folder = new File("src/main/rules/"); for (File file : folder.listFiles(RULES_FILES_FILTER)) { System.out.println("compiling "+file.getAbsolutePath()); kbuilder.add(ResourceFactory.newFileResource(file.getAbsolutePath()), ResourceType.DRL); } System.out.println("saving"); ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("test.drl.compiled")); out.writeObject( kbuilder.getKnowledgePackages()); out.close(); } private KnowledgeBase testLoad() throws FileNotFoundException, IOException, ClassNotFoundException { Properties configProperties = new Properties(); KnowledgeBaseConfiguration knowledgeBaseConfiguration = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(configProperties); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(knowledgeBaseConfiguration); ObjectInputStream in = new ObjectInputStream(new FileInputStream("test.drl.compiled")); System.out.println("loading"); kbase.addKnowledgePackages((Collection<KnowledgePackage>) in.readObject()); return kbase; } public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException { TestCompilation testCompilation = new TestCompilation(); testCompilation.testCompilation(); testCompilation.testLoad(); } } The folder src/main/rules consists of a number of .drl files. Compiling works fine. This is the output: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. compiling /home/willem/development/workspace/VCM/src/main/rules/planner-lock.drl compiling /home/willem/development/workspace/VCM/src/main/rules/executable-action-selection.drl compiling /home/willem/development/workspace/VCM/src/main/rules/block-times-3.drl compiling /home/willem/development/workspace/VCM/src/main/rules/planner-bridge.drl compiling /home/willem/development/workspace/VCM/src/main/rules/routeplan.drl compiling /home/willem/development/workspace/VCM/src/main/rules/shift-management-brabant.drl compiling /home/willem/development/workspace/VCM/src/main/rules/plan-first-object-in-route.drl compiling /home/willem/development/workspace/VCM/src/main/rules/operator-lock.drl compiling /home/willem/development/workspace/VCM/src/main/rules/block-times-route-call.drl compiling /home/willem/development/workspace/VCM/src/main/rules/shift-management.drl compiling /home/willem/development/workspace/VCM/src/main/rules/planner-process-data.drl compiling /home/willem/development/workspace/VCM/src/main/rules/plan-last-moment.drl compiling /home/willem/development/workspace/VCM/src/main/rules/operator-bridge.drl compiling /home/willem/development/workspace/VCM/src/main/rules/operator-management.drl saving loading Exception in thread "main" java.lang.ClassNotFoundException: vcm.planner.lock.standard.PossibleSlotLock at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.drools.common.DroolsObjectInputStream.resolveClass(DroolsObjectInputStream.java:85) at org.drools.common.DroolsObjectInputStream.resolveClass(DroolsObjectInputStream.java:97) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1593) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1514) at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1480) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1330) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.ConsequenceMetaData$Statement.readExternal(ConsequenceMetaData.java:61) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.util.ArrayList.readObject(ArrayList.java:733) at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.ConsequenceMetaData.readExternal(ConsequenceMetaData.java:19) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.Rule.readExternal(Rule.java:207) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.JavaDialectRuntimeData.readExternal(JavaDialectRuntimeData.java:195) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.util.HashMap.readObject(HashMap.java:1155) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.DialectRuntimeRegistry.readExternal(DialectRuntimeRegistry.java:58) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.Package.readExternal(Package.java:208) at org.drools.definitions.impl.KnowledgePackageImp.readExternal(KnowledgePackageImp.java:157) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.util.ArrayList.readObject(ArrayList.java:733) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at com.paconsulting.pase.test.TestCompilation.testLoad(TestCompilation.java:57) at com.paconsulting.pase.test.TestCompilation.main(TestCompilation.java:64) The class PossibleSlotLock is just a locally declared fact class. It is only being used in that particular .drl file. Every .drl file has it's own package name. The head of the .drl file: package vcm.planner.lock.standard; import java.util.Set; import com.paconsulting.pase.core.schedule.CurrentTime; import com.paconsulting.pase.core.duration.FixedDuration; import com.paconsulting.pase.transport.agents.ScheduleManagingContainer; import com.paconsulting.pase.transport.agents.movers.Ship; import com.paconsulting.pase.transport.agents.water.Lock; import com.paconsulting.pase.transport.agents.water.LockChamber; import com.paconsulting.pase.transport.agents.base.WaterLevel; import com.paconsulting.pase.transport.components.action.ActionFactory; import com.paconsulting.pase.transport.actions.IAction; import com.paconsulting.pase.transport.components.action.IActionable; import com.paconsulting.pase.transport.actions.NonTransactionAction; import com.paconsulting.pase.transport.actions.ExecutableAction; import com.paconsulting.pase.transport.components.containing.IContainer; import com.paconsulting.pase.transport.components.containing.IContainer.UpDown; import com.paconsulting.pase.transport.components.moving.IMover; import com.paconsulting.pase.transport.components.moving.TransferSchedule; import com.paconsulting.pase.transport.components.moving.ToScheduleLock; declare PossibleSlotLock ship : IMover chamber : IContainer side : IContainer.UpDown schedule : TransferSchedule eta : double at : double cause : String end .... Same issue like in my previous email, different class that cannot be found. This works in 5.4.0.Final Any clue? This seems to me like a really basic thing so either I am missing the plot somehow or no-one has yet used a locally declared fact classes - which I think is just not true... Regards, Willem On 10/24/2012 07:29 PM, Wolfgang Laun wrote:It would be interesting to know (and perhaps help to isolate the problem apparently introduced in 5.5.0) if you could try and compile and serialize into a single file, and load that in a single readObject. -W On 24/10/2012, Willem van Asperen <wil...@van.asperen.org> wrote:Hi Wolfgang, Thanks for picking this up. I am indeed compiling these separate .drl files into separate .drl.compiled files and then creating a kbase using addKnowledgePackages on the individual .drl.compiled files. But: the classes declared in some of by .drl files are only going to be used in that particular .drl file - not anywhere else. Also: this did work in 5.4.0.Final but now has given up on me. Point is that I need to be flexible in mixing different .drl.compiled files into a kbase, based on user specifications. Alternative is that I do not pre-compile these .drl files and only compile them, in combination, in the mix that is required by the user... If that would solve the problem... But it seems to be more cumbersome... Regards, Willem On 10/24/2012 03:39 PM, Wolfgang Laun wrote:The code you use for loading where you load many .pkg files isn't quite the counterpart for compiling where you compile one DRL. Do you compile and output the .drl files one by one? Apparently you load them individually? Try compiling them all, and then take the Collection<KnowledgePackage> and writeObject it to a single .pkg from which you load them in one go. Could it be that the type declared in one .drl is used in another .drl in the same package? Reading this in the wrong order might cause the CNF. -W On 24/10/2012, Willem van Asperen <wil...@van.asperen.org> wrote:Dear All, I use the Drools compiler to compile a set of drl files: KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(configuration); kbuilder.add(ResourceFactory.newFileResource(fileName), ResourceType.DRL); KnowledgeBuilderErrors errors = kbuilder.getErrors(); if (errors.size() > 0) { for (KnowledgeBuilderError error: errors) { logger.error(error); } throw new IllegalArgumentException("Could not parse knowledge."); } ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(fileName+".compiled")); out.writeObject( kbuilder.getKnowledgePackages()); out.close(); I then load these *.compiled files into my application: for (String packageName : packages) { InputStream is = getClass().getResourceAsStream("/"+packageName+".drl.compiled"); if (is != null) { logger.debug("adding package '"+packageName+"'"); ObjectInputStream in = new ObjectInputStream(is); kbase.addKnowledgePackages((Collection<KnowledgePackage>) in.readObject()); in.close(); } else throw new FileNotFoundException("could not find resource for package "+packageName); is.close(); } In some of these drl files I declare a class, for instance: package vcm.selection.standard; import com.paconsulting.pase.transport.agents.ShiftWorker; import com.paconsulting.pase.transport.agents.VCMShiftWorker; import com.paconsulting.pase.transport.actions.ExecutableAction; import com.paconsulting.pase.transport.agents.ScheduleManagingContainer; import com.paconsulting.pase.transport.agents.water.Bridge; import com.paconsulting.pase.transport.agents.movers.AbstractMover; import com.paconsulting.pase.transport.agents.movers.Ship; import com.paconsulting.pase.transport.agents.movers.VCMShip; declare RelevantExecutableAction agent : ShiftWorker executableAction : ExecutableAction end ... When running the kbase.addKnowledgePackages((Collection<KnowledgePackage>) in.readObject()) I get the following ClassNotFound stack trace: java.lang.ClassNotFoundException: vcm.selection.standard.RelevantExecutableAction at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.drools.common.DroolsObjectInputStream.resolveClass(DroolsObjectInputStream.java:85) at org.drools.common.DroolsObjectInputStream.resolveClass(DroolsObjectInputStream.java:97) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1593) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1514) at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1480) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1330) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.ConsequenceMetaData$Statement.readExternal(ConsequenceMetaData.java:61) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.util.ArrayList.readObject(ArrayList.java:733) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.ConsequenceMetaData.readExternal(ConsequenceMetaData.java:19) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.Rule.readExternal(Rule.java:207) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.JavaDialectRuntimeData.readExternal(JavaDialectRuntimeData.java:195) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.util.HashMap.readObject(HashMap.java:1155) at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.DialectRuntimeRegistry.readExternal(DialectRuntimeRegistry.java:58) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at org.drools.rule.Package.readExternal(Package.java:208) at org.drools.definitions.impl.KnowledgePackageImp.readExternal(KnowledgePackageImp.java:157) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1810) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at java.util.ArrayList.readObject(ArrayList.java:733) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369) at com.paconsulting.pase.core.configuration.runconfig.definition.KnowledgebaseDefinition.addPackages(KnowledgebaseDefinition.java:48) at com.paconsulting.pase.core.configuration.runconfig.definition.KnowledgebaseDefinition.materialize(KnowledgebaseDefinition.java:59) at com.paconsulting.pase.core.configuration.runconfig.definition.TeamDefinition.materialize(TeamDefinition.java:97) at com.paconsulting.pase.core.configuration.runconfig.definition.OperatingModelDefinition.materialize(OperatingModelDefinition.java:36) at com.paconsulting.pase.core.configuration.runconfig.Run.<init>(Run.java:31) at com.paconsulting.pase.core.configuration.runconfig.definition.RunDefinition.materialize(RunDefinition.java:53) at com.paconsulting.pase.core.configuration.runconfig.RunConfigExecutor$ScheduleExecutorWrapper.run(RunConfigExecutor.java:69) ... I'm sure I miss something as this is basic functionality. Maybe I must tell the kbase where to load the classes... Can someone point me in the right direction? Thanks, Willem _______________________________________________ rules-users mailing list rules-us...@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users_______________________________________________ rules-users mailing list rules-us...@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users_______________________________________________ rules-dev mailing list rules-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev
failing-load.jar
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