type.loader java.lang.ClassNotFoundException

#1

ObjectDB objectdb-2.2.5_03 in client-server mode

Netbeans ID6.9.1 JavaEE web project (JPA)

Glassfish3.0.1

With server logging turned on I get the following error message for many (or all) encountered classes:

[2011-05-31 09:16:24 #5 type.loader]
java.lang.ClassNotFoundException: com.greensoft.entity.Element
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at com.objectdb.o.RCL.j(RCL.java:299)
at com.objectdb.o.ACL.loadClass(ACL.java:106)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at com.objectdb.o.TYM.aw(TYM.java:979)
at com.objectdb.o.UTY.initSysType(UTY.java:324)
at com.objectdb.o.TYS.l(TYS.java:163)
at com.objectdb.o.TYM.ac(TYM.java:485)
at com.objectdb.o.MST.UA(MST.java:1022)
at com.objectdb.o.WRA.UA(WRA.java:195)
at com.objectdb.o.WRA.UA(WRA.java:195)
at com.objectdb.o.WSN.UA(WSN.java:180)
at com.objectdb.o.STC.l(STC.java:298)
at com.objectdb.o.SHN.ab(SHN.java:368)
at com.objectdb.o.SHN.J(SHN.java:124)
at com.objectdb.o.HND.run(HND.java:133)
at java.lang.Thread.run(Thread.java:655)

[2011-05-31 09:16:24 #6 type.loader]
java.lang.ClassNotFoundException: java.lang.com.greensoft.entity.Element
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at com.objectdb.o.RCL.j(RCL.java:329)
at com.objectdb.o.ACL.loadClass(ACL.java:106)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at com.objectdb.o.TYM.aw(TYM.java:979)
at com.objectdb.o.UTY.initSysType(UTY.java:324)
at com.objectdb.o.TYS.l(TYS.java:163)
at com.objectdb.o.TYM.ac(TYM.java:485)
at com.objectdb.o.MST.UA(MST.java:1022)
at com.objectdb.o.WRA.UA(WRA.java:195)
at com.objectdb.o.WRA.UA(WRA.java:195)
at com.objectdb.o.WSN.UA(WSN.java:180)
at com.objectdb.o.STC.l(STC.java:298)
at com.objectdb.o.SHN.ab(SHN.java:368)
at com.objectdb.o.SHN.J(SHN.java:124)
at com.objectdb.o.HND.run(HND.java:133)
at java.lang.Thread.run(Thread.java:655)

The web project build has:

    build/web/WEB-INF/classes/META-INF/persistence.xml

    build/web/WEB-INF/classes/com/greensoft/*

The .odb file is created and seems to have the right classes with the right structure, but there are no objects persisted (although that may be due to another problem, namely my application halts with an error about unique primary keys/ids on initial startup entity creation/wiring).

Q: Is there anywhere else I have to tell the server about the built entity classes ?

Grateful for feedback,

Webel

 

--- Webel IT Australia, "The Elements of the Web", Specialists in model-based UML, SysML, Enterprise Java, XML, and Drupal CMS web engineering. Dr Darren Kelly, BSc, PhD, https://www.webel.com.au
#2

With logging enabled in debug level - some 'normal' ClassNotFoundException are written to the log - so please check if you still see these exceptions in lower logging level (e.g. info).

The empty database might be the result of another issue - please try to isolate the problem.

The server should work well with no entity classes in the classpath.

ObjectDB Support
ObjectDB - Fast Object Database for Java (JPA/JDO)

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