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https://issues.apache.org/jira/browse/THRIFT-2988?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jens Geyer reopened THRIFT-2988:
--------------------------------
> Class Cast Exception in Generated Java AsyncProcessor
> -----------------------------------------------------
>
> Key: THRIFT-2988
> URL: https://issues.apache.org/jira/browse/THRIFT-2988
> Project: Thrift
> Issue Type: Bug
> Components: Java - Compiler, Java - Library
> Reporter: deepankar
> Priority: Critical
>
> When using a generated Async Processor for any service, there is a class cast
> exception that can happen when you call the onError function on a returned
> AsyncMethodCallback (returned from any class that extends
> {{AsyncProcessFunction}}) with an exception other than the expected exception
> for that method
> This occurs because the org.apache.thrift.TApplicationException being cast as
> (org.apache.thrift.TBase) in the generated code for a service
> {code:title=Bar.java|borderStyle=solid}
> indent(f_service_) << "{" << endl;
> indent_up();
> indent(f_service_) << "msgType =
> org.apache.thrift.protocol.TMessageType.EXCEPTION;" << endl;
> indent(f_service_) << "msg = (org.apache.thrift.TBase)new "
>
> "org.apache.thrift.TApplicationException(org.apache.thrift."
> "TApplicationException.INTERNAL_ERROR,
> e.getMessage());" << endl;
> indent_down();
> indent(f_service_) << "}" << endl;
> {code}
> link : [code-in-github-trunk
> |https://github.com/apache/thrift/blob/master/compiler/cpp/src/generate/t_java_generator.cc#L3209-L3221]
> There are two ways to solve this :
> * one is make TApplicationException to extend TBase
> * another is to change the code generation logic here
> I can put up a patch based on what approach is advised ?
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