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Junit and Hibernate Problem

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kostas

Post subject: Junit and Hibernate Problem

Posted: Tue Mar 15, 2005 1:31 pm

Newbie

Joined: Thu Jun 17, 2004 4:16 pm
Posts: 18

Hello all,

I am trying to test some methods that retrieve objects from a database through hibernate. Unfortunately the test method throes a hibernate exception which I don't understand. The exception is as follows:

Code:

Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed

Do you know how can I solve this problem? Below I have some information
The directory structure of my project is the following:

Code:

/src
    /conf
    /java
        /essex.cc403.registry
               EventRegistry.java
        
/test
    /essex.cc403.registry
          EventRegistry.java
/build
    /web
        /WEB-INF
            /classes
                hibernate.properties
                log4j.properties
                /essex.cc403.registry
                     EventRegistry.class

The classpath:

Code:

build/web/WEB-INF/classes/
build/test
hibernate libraries

The ant target that test the source:

Code:

<target name="run-test" depends="build,build-test">
        <java fork="true" classname="junit.swingui.TestRunner" classpathref="project.classpath"/>
    </target>

Hibernate version:
2.1.8
Name and version of the database you are using:
hsqldb-1.7.3.3
Full stack trace of any exception that occurs:

Code:

Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.))

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