Operating System: other
It is currently not possible to bind a SharedPoolDataSource into jndi and
retrieve it again via a lookup. The problem was seen in tomcat's naming
implementation, but is likely to be not limited to that implementation.
The problem is: SharedPoolDataSource implements javax.naming.Referenceable via
its parent InstanceKeyDataSource. Referenceable specifies that a getReference()
method is implemented, which returns a javax.naming.Reference object. The
reference object contains a reference to a factory for the object. In the
implementation of InstanceKeyDataSource, dbcp's InstanceKeyObjectFactory is
specified as facory. However, this is invalid as InstanceKeyObjectFactory is
abstract and cannot be instantiated, so upon a lookup, the object cannot be
retrieved from jndi.
There are two obvious solutions. First, getReference() could return the correct
factory (SharedPoolDataSourceFactory). Second, InstanceKeyDataSource could not
implement Referenceable any more.
The problem also occurs for dbcp's PerUserPoolDatasource. A successfull bind can
be done using dbcp's BasicDataSource.
I will attach a test case which shows the wrong behaviour. It depends on the
jars naming-common-5.0.28.jar and naming-java.5.0.28.jar which can be downloaded