If the resource assignment service is based on a resource management service as defined in package {@link de.danet.an.workflow.spis.rms de.danet.an.workflow.spis.rms
}, it can simply delegate this call to {@link de.danet.an.workflow.spis.rms.ResourceManagementService#listResources ResourceManagementService.listResources
}. The workflow engine does not need this method for its operation; however, it provides a method for accessing this information as part of the client interface to ease the implementation of clients. The implementation of this method by a resource assignment service is therefore optional. If not implemented, a call to this method must result in a {@link java.lang.UnsupportedOperationException UnsupportedOperationException
}.
@return the collection of resources known to the resourceassignment service (instances of {@link de.danet.an.workflow.omgcore.WfResource WfResource
}).
@throws RemoteException if a system-level error occurs.
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