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From: Marc Prud'hommeaux <mprudhom@apache.org>
Subject: Re: openjpa.Configuration Logging Channel Problem
Date: Fri, 27 Jul 2007 13:01:06 -0700
To: dev@openjpa.apache.org
Sender: Marc Prud'hommeaux <mprudhomapache@gmail.com>

Albert-

You are correct: there is no actual openjpa.Configuration log. Sorry  
you had to go through all the trouble to track that down!

I've gone ahead and updated the docs for the next version of OpenJPA  
to remove mention of that channel.

> 3) The logging channels section in the manual needs to add the "
> openjpa.jdbc.Schema" log channel.

This channel is already mentioned in http://openjpa.apache.org/docs/ 
latest/manual/manual.html#ref_guide_logging_channels (although it is  
after the example of the preceding property, so it is understandable  
if it isn't immediately obvious).


On Jul 27, 2007, at 9:48 AM, Albert Lee wrote:

> Is OpenJpa supporting "openjpa.Configuration" log channel?   
> According to the
> manual:
> 1.  Logging Channels
>
> Logging is done over a number of *logging channels*, each of which has
> a *logging
> level* which controls the verbosity of log messages recorded for the
> channel. OpenJPA uses the following logging channels:
>
>    -
>
>     openjpa.Configuration: Messages issued by the configuration
>    framework.
>
> it is supported feature, however when it is specified, e.g.
>
>      <property name="openjpa.Log" value="Configuration=TRACE"/>
>
> the following exception is thrown at runtime:
>
> Exception in thread "main" <0.0.0 fatal general error>
> org.apache.openjpa.persistence.PersistenceException: There was an  
> error when
> invoking the static newInstance method on the named factory class "
> org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory".  See the nested  
> exception
> for details.
>     at org.apache.openjpa.kernel.Bootstrap.newBrokerFactory 
> (Bootstrap.java
> :67)
>     at
> org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityMan 
> agerFactory
> (PersistenceProviderImpl.java:74)
>     at
> com.ibm.websphere.persistence.PersistenceProviderImpl.createEntityMana 
> gerFactory
> (PersistenceProviderImpl.java:42)
>     at
> org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityMan 
> agerFactory
> (PersistenceProviderImpl.java:82)
>     at javax.persistence.Persistence.createEntityManagerFactory(
> Persistence.java:83)
>     at javax.persistence.Persistence.createEntityManagerFactory(
> Persistence.java:60)
>     at suite.r70.jse.EntityTest.main(EntityTest.java:14)
> Caused by: org.apache.openjpa.lib.util.ParseException:
> org.apache.openjpa.lib.log.LogFactoryImpl@6ac66ac6.Configuration =  
> TRACE
>     at org.apache.openjpa.lib.util.Options.setInto(Options.java:237)
>     at org.apache.openjpa.lib.util.Options.setInto(Options.java:190)
>     at org.apache.openjpa.lib.conf.Configurations.configureInstance(
> Configurations.java:436)
>     at org.apache.openjpa.lib.conf.Configurations.configureInstance(
> Configurations.java:390)
>     at org.apache.openjpa.lib.conf.PluginValue.instantiate 
> (PluginValue.java
> :102)
>     at org.apache.openjpa.lib.conf.ObjectValue.instantiate 
> (ObjectValue.java
> :82)
>     at org.apache.openjpa.lib.conf.ConfigurationImpl.getLogFactory(
> ConfigurationImpl.java:204)
>     at org.apache.openjpa.lib.conf.ConfigurationImpl.getLog(
> ConfigurationImpl.java:223)
>     at  
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.getConfigurationLog(
> OpenJPAConfigurationImpl.java:1432)
>     at
> org.apache.openjpa.persistence.PersistenceProductDerivation 
> $ConfigurationProviderImpl.setInto
> (PersistenceProductDerivation.java:424)
>     at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newInstance(
> JDBCBrokerFactory.java:59)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at sun.reflect.NativeMethodAccessorImpl.invoke(
> NativeMethodAccessorImpl.java:64)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(
> DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke(Method.java:615)
>     at org.apache.openjpa.kernel.Bootstrap.invokeFactory 
> (Bootstrap.java:124)
>     at org.apache.openjpa.kernel.Bootstrap.newBrokerFactory 
> (Bootstrap.java
> :62)
>     ... 6 more
> Caused by: java.lang.NoSuchMethodException:
> org.apache.openjpa.lib.conf.Configuration.<init>(java.lang.String)
>     at java.lang.Class.throwNoSuchMethodException(Class.java:275)
>     at java.lang.Class.getConstructor(Class.java:320)
>     at org.apache.openjpa.lib.util.Options.stringToObject 
> (Options.java:436)
>     at org.apache.openjpa.lib.util.Options.setInto(Options.java:229)
>     ... 22 more
>
> One can work around the problem by using "openjpa.Configuration"  
> instead of
> "Configuration".
>
> A few other observations:
> 1) I grep for "openjpa.Configuration" from all the java files and  
> nowhere
> this string is found. I can found the other log channel names (e.g.
> openjpa.Runtime, openjpa.Enhance) in either  
> OpenJPAConfiguration.java or
> JDBCConfiguration.java
> 2) When I debug the problem and stop in LogFactoryImpl.getLog()  
> method and
> no one is calling this method with "openjpa.Configuration" channel.  
> So it
> seems no "configuration" information is being logged.
> 3) The exception is caused by the Options class trying to reflect  
> and find
> the constructor from the Configuration.java interface with a String
> argument. The reason it gets to this path is because
> Options.matchOpetionToMember() found a setConfiguration() method in
> LogFactoryImpl.
> 4) There is a "openjpa.jdbc.Schema" log channel defined in
> JDBCConfiguration.java but not document in the manual.
> 5) The same scenario works in the 0.9.7 level, so something was  
> changed
> since then.
>
> From the investigation:
> 1) It looks like "openjpa.Configuration" is not being used at all.  
> If so,
> the manual need to remove the openjpa.Configuration in the Logging  
> Channels
> section.
> 2) If it is still supported, then there is a bug somewhere.
> 3) The logging channels section in the manual needs to add the "
> openjpa.jdbc.Schema" log channel.
> 4) If user uses the incorrect logging channel name, a warning/error  
> message
> should be posted instead of the observed exception.
>
> Are these valid observations and interpretations?
>
> Albert Lee.