I've read somewhere that the minimum jar set for execution with a precompiled .pkg is just
drools-api-5.1.0.M2.jar
drools-core-5.1.0.M2.jar
However, trying to run an application with just a .pkg file, this jar set results in the stack
dump shown below, due to a missing "org.mvel2..." class. Adding lib/mvel2-2.0.16.jar to the
CLASSPATH fixes this, but (for reasons I don't care to elaborate here) be we can't have this
in our application.
Can this .jar be avoided?
Note: I'm not using mvel, and the .drl file begins with "package movie; dialect "java".
-W
Exception in thread "main" java.lang.NoClassDefFoundError: org/mvel2/integration/impl/MapVariableResolverFactory
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:632)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:264)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332)
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2308)
at java.lang.Class.getDeclaredField(Class.java:1897)
at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1627)
at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:69)
at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:442)
at java.security.AccessController.doPrivileged(Native Method)
at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:430)
at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:327)
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:564)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1600)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1513)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1749)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
at java.util.HashMap.readObject(HashMap.java:1047)
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:616)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:991)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1865)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
at org.drools.rule.DialectRuntimeRegistry.readExternal(DialectRuntimeRegistry.java:41)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1809)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1768)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
at org.drools.rule.Package.readExternal(Package.java:198)
at org.drools.definitions.impl.KnowledgePackageImp.readExternal(KnowledgePackageImp.java:99)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1809)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1768)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
at java.util.ArrayList.readObject(ArrayList.java:696)
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:616)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:991)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1865)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1770)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
at movie.Main.init(Main.java:40)
at movie.Main.main(Main.java:89)
Caused by: java.lang.ClassNotFoundException: org.mvel2.integration.impl.MapVariableResolverFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:264)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332)
... 60 more