Richard Eckart de Castilho created UIMA-2977:
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             Summary: destroy method of shared resources never called
                 Key: UIMA-2977
                 URL: https://issues.apache.org/jira/browse/UIMA-2977
             Project: UIMA
          Issue Type: Bug
          Components: Core Java Framework
            Reporter: Richard Eckart de Castilho


Apparently the ResourceManager and the resources created by the manager do not 
participate in the usual component life cycle. On other components, such as 
analysis engines or readers, the destroy() method is called when the component 
is disposed of. External resources never get notified when they are no longer 
needed. At least any resources derived from Resource (e.g. DataResource and 
ParametrizedDataResource) should be notified. The SharedResourceObject 
interface does not define any such life cycle callback.

As a side-note: An alternative to the rather heavy-weight Resource interface of 
UIMA maybe be small life cycle interfaces such as the Spring InitializingBean 
and DisposableBean interfaces, or Java annotations marking initialization and 
destruction methods (e.g. @PostConstruct and @PreDestroy).

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