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Posted to dev@uima.apache.org by Andre Gillet <An...@cerence.com.INVALID> on 2023/11/22 16:59:37 UTC

ClassCastException in ImportResolver.resolveImports() when using custom ResourceManager

Hello,

Found in 3.4.1 but issue still seems to exist.  We have a custom ResourceManager which implements the ResourceManager interface.  Following code assumes that aResourceManager will always be a ResourceManager_impl.

Method signature defines ResourceManager aResourceManager:

https://github.com/apache/uima-uimaj/blob/81587d2e6894655af3b07b347a976fd92d8f7bf0/uimaj-core/src/main/java/org/apache/uima/resource/metadata/impl/ImportResolver.java#L142-L144

  private void resolveImports(DescriptorAdapter<DESCRIPTOR, COLLECTIBLE> aWrapper,
          Set<String> aAlreadyVisited, Map<Key, COLLECTIBLE> aAllCollectedObjects,
          Deque<String> aStack, ResourceManager aResourceManager) throws InvalidXMLException {

Casting aResourceManager to ResourceManager_impl causes ClassCastException:

https://github.com/apache/uima-uimaj/blob/81587d2e6894655af3b07b347a976fd92d8f7bf0/uimaj-core/src/main/java/org/apache/uima/resource/metadata/impl/ImportResolver.java#L160

    Map<String, XMLizable> importCache = ((ResourceManager_impl) aResourceManager).getImportCache();

Thanks,

Andre

Re: ClassCastException in ImportResolver.resolveImports() when using custom ResourceManager

Posted by Richard Eckart de Castilho <re...@apache.org>.

Hi,

could you inherit from ResouceManager_impl?

If not, why not?

What would you suggest to do?

Cheers,

-- Richard

> On 22. Nov 2023, at 17:59, Andre Gillet <An...@cerence.com.INVALID> wrote:
> 
> Hello,
> 
> Found in 3.4.1 but issue still seems to exist.  We have a custom ResourceManager which implements the ResourceManager interface.  Following code assumes that aResourceManager will always be a ResourceManager_impl.
> 
> Method signature defines ResourceManager aResourceManager:
> 
> https://github.com/apache/uima-uimaj/blob/81587d2e6894655af3b07b347a976fd92d8f7bf0/uimaj-core/src/main/java/org/apache/uima/resource/metadata/impl/ImportResolver.java#L142-L144
> 
>  private void resolveImports(DescriptorAdapter<DESCRIPTOR, COLLECTIBLE> aWrapper,
>          Set<String> aAlreadyVisited, Map<Key, COLLECTIBLE> aAllCollectedObjects,
>          Deque<String> aStack, ResourceManager aResourceManager) throws InvalidXMLException {
> 
> Casting aResourceManager to ResourceManager_impl causes ClassCastException:
> 
> https://github.com/apache/uima-uimaj/blob/81587d2e6894655af3b07b347a976fd92d8f7bf0/uimaj-core/src/main/java/org/apache/uima/resource/metadata/impl/ImportResolver.java#L160
> 
>    Map<String, XMLizable> importCache = ((ResourceManager_impl) aResourceManager).getImportCache();
> 
> Thanks,
> 
> Andre
>