postgresql query c++ callback

Question

Is it possible with any existing c++ library to implement a callback that returns when a query is completed?

I've found this , but I'm not sure if that's what I want.

I'd like to wait the boost::thread writing to the database until the write is completed.

If this is possible, please link the library and an example.

Answer 1

I was looking for something like this too, ended up doing an async libpq wrapper: http://github.com/metherealone/postgrespp - It uses Boost.ASIO though, not threads. I hope this helps.

Answer 2

From the libpq docs about PQexec function :

Submits a command to the server and waits for the result.

Similar to that, the PQexecParams and PQexecPrepared also wait for the query to be executed. So, using those functions you don't need to worry about waiting, the API will do that for you.

If you need to asynchronously send query to the database, you can use the asynchronous functions .