On 01/02/2017 21:53, Serkan Mulayim wrote:
Is there any documentation on how we can use these exceptions for building safer
applications? Is there a documentation for all "classes" which throws
exceptions with the corresponding functions? Is there any code examples on how they are
used?
As Tilghman already pointed out, you can catch exceptions from C with the
Err_trap function. You can find usage examples in the Clownfish test suite and
in the FastUpdates cookbook entry:
https://lucy.apache.org/docs/c/Lucy/Docs/Cookbook/FastUpdates.html
Err_trap calls a `void (*f)(void *ctx)` function pointer with a user-supplied
context and returns the exception as Err object, or NULL on success.
Exceptions are also thrown on out-of-memory errors, so almost any method could
throw.
Is there any documentation on the functions which return a status (e.g 0 for
success -1 for lock error etc...) of the method as well?
There are very few methods in the public API that return a status, mostly in
the locking code:
https://lucy.apache.org/docs/c/Lucy/Store/Lock.html
In case of an error, you can get the Err object with Err_get_error. This
behavior is explained in the documentation.
Nick
