Cannot get Jruby to work with Neo4j
-----------------------------------
Key: JRUBY-2496
URL: http://jira.codehaus.org/browse/JRUBY-2496
Project: JRuby
Issue Type: New Feature
Components: Java Integration
Affects Versions: JRuby 1.1
Environment: OSX Leopard
Reporter: Marius Mathiesen
Attachments: basic_test.rb
The network oriented database Neo4j (www.neo4j.org) made med pick up Jruby
again. However, it fails badly in Jruby, and I'm unable to make much of the
stack trace generated. It seems to originate from somewhere deep within Jruby
(org.jruby.javasupport.JavaMethod.invokeWithExceptionHandling, the full trace
follows (jruby code included as attachment):
TxManager.java:721:in `org.neo4j.impl.transaction.TxManager.getStatus':
java.lang.NullPointerException: null (NativeException)
from UserTransactionImpl.java:91:in
`org.neo4j.impl.transaction.UserTransactionImpl.getStatus'
from TransactionUtil.java:66:in
`org.neo4j.impl.transaction.TransactionUtil.beginTx'
from Transaction.java:91:in `org.neo4j.api.core.Transaction.begin'
from NativeMethodAccessorImpl.java:-2:in
`sun.reflect.NativeMethodAccessorImpl.invoke0'
from NativeMethodAccessorImpl.java:39:in
`sun.reflect.NativeMethodAccessorImpl.invoke'
from DelegatingMethodAccessorImpl.java:25:in
`sun.reflect.DelegatingMethodAccessorImpl.invoke'
from Method.java:585:in `java.lang.reflect.Method.invoke'
from JavaMethod.java:196:in
`org.jruby.javasupport.JavaMethod.invokeWithExceptionHandling'
... 9 levels...
from Main.java:174:in `org.jruby.Main.runInterpreter'
from Main.java:120:in `org.jruby.Main.run'
from Main.java:95:in `org.jruby.Main.main'
Complete Java stackTrace
java.lang.NullPointerException
at org.neo4j.impl.transaction.TxManager.getStatus(TxManager.java:721)
at
org.neo4j.impl.transaction.UserTransactionImpl.getStatus(UserTransactionImpl.java:91)
at
org.neo4j.impl.transaction.TransactionUtil.beginTx(TransactionUtil.java:66)
at org.neo4j.api.core.Transaction.begin(Transaction.java:91)
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
org.jruby.javasupport.JavaMethod.invokeWithExceptionHandling(JavaMethod.java:196)
at org.jruby.javasupport.JavaMethod.invoke_static(JavaMethod.java:182)
at
org.jruby.javasupport.JavaClass$StaticMethodInvoker.execute(JavaClass.java:371)
at
org.jruby.internal.runtime.methods.SimpleCallbackMethod.call(SimpleCallbackMethod.java:81)
at org.jruby.RubyObject.compilerCallMethod(RubyObject.java:508)
at
org.jruby.javasupport.util.CompilerHelpers.doInvokeDynamic(CompilerHelpers.java:124)
at EVAL5275383.__file__(EVAL5275383:6)
at EVAL5275383.run(EVAL5275383)
at org.jruby.Ruby.compileOrFallbackAndRun(Ruby.java:322)
at org.jruby.Main.runInterpreter(Main.java:229)
at org.jruby.Main.runInterpreter(Main.java:174)
at org.jruby.Main.run(Main.java:120)
at org.jruby.Main.main(Main.java:95)
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