Spring data MongoDB own error

Question

Can anyone know best practice translate specific mongodb error code to own exception code. Spring data mongodb have got any converters or mechanism for that ?

in my case i need throw my own error when _id field is duplicate. So for example now my error is :

org.springframework.dao.DuplicateKeyException: { "serverUsed" : "/127.0.0.1:27017" , "err" : "E11000 duplicate key error index: test.member.$_id_  dup key: { : \"lukasz\" }" , "code" : 11000 , "n" : 0 , "connectionId" : 35 , "ok" : 1.0}; nested exception is com.mongodb.MongoException$DuplicateKey: { "serverUsed" : "/127.0.0.1:27017" , "err" : "E11000 duplicate key error index: test.member.$_id_  dup key: { : \"lukasz\" }" , "code" : 11000 , "n" : 0 , "connectionId" : 35 , "ok" : 1.0}

and i need throw UsernameAlreadyExist ...

i need to mention that i need translate that error only for one collection

thanks for help

Answer 1

A reasonable approach would be to simply catch DuplicateKeyException in an appropriate place and throw your UsernameAlreadyExist exception (potentially wrapping the source one).