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war/WEB-INF/lib to cannot be in build path when using JPA/JDO in GAE #147

Closed makoivis closed 8 years ago

makoivis commented 8 years ago

Reported by Henri Muurimaa on 22 Nov 2009 13:45 UTC DataNucleus enhancer fails if datanucleus-appengine-1.0.3.jar in the war/WEB-INF/lib is in classpath, see this thread: http://vaadin.com/forum/-/message_boards/message/76408

Eclipse plugin needs to handle this somehow. Workaround below.

makoivis commented 8 years ago

Comment by Henri Sara on 25 Nov 2009 12:27 UTC This is a duplicate of #3649.

The problem is that the Vaadin Eclipse plugin is designed to use the Eclipse Web Tools Project (WTP) practices and conventions, whereas the Google plugin is not.

WTP automatically and implicitly adds all JARs in WEB-INF/lib to the classpath, whereas the Google plugin assumes they need to be added explicitly, one by one. Having the same JAR twice in the classpath then causes problems for some reason.

makoivis commented 8 years ago

Modified by Artur Signell on 12 May 2014 07:42 UTC