Hi

I think the idea is to reuse the Exceptions declared by the TypeConverter
API like TypeConversionException, NoTypeConversionAvailableException. And
while reading the InvalidPayloadException JavaDoc itself it's purpose says
exactly what we've got already through the TypeConverter API meaning this
exception is obsolete.

As an example we've got the following method signature on
org.apache.camel.Message:

   <T> T getMandatoryBody(Class<T> type) throws InvalidPayloadException;

Which I think in Camel 3.0 will be changed to something like

   <T> T getMandatoryBody(Class<T> type) throws TypeConversionException,
NoTypeConversionAvailableException;

Also IMHO the latter exceptions have a really better naming explaining the
*exact* root cause of the problem e.g. type conversion failed or no type
conversion was available at all, the former however is a bit obscure as
there's nothing clear *why* the payload was/is invalid.

Babak




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