cppcms-users

[Cppcms-users] Session problem

[<ele...@ex...>]

I've got a JSON-RPC service that needs to load a content class because it
stores a list of different aircraft.

void JSON_Service::build_aircraft_list(int location)
	data::Master content;
	apps::Master ctr(service());

	ctr.init(); //setup sql
	ctr.prepare(content);
	ctr.clear(); // teardown sql
}

The problem is I can't access the session. If I try something like
ctr.session() the JSON service freezes. It seems to work if I call
session() directly from build_aircraft_list, but I need to access the
session() from inside prepare().

Why can't the apps::Master controller access session?

Thank you
Petr

Re: [Cppcms-users] Session problem

[Artyom B. <art...@ya...>]

 

>    apps::Master ctr(service());
>
>
>The problem is I can't access the session. If I try something like
>ctr.session() the JSON service freezes. 

You can't access the session of unconnected application, you can't create
applications "on-the fly" they are not designed for it. In order to access the session
via JSON_Service::session() API that 


See this thread:

  http://thread.gmane.org/gmane.comp.lib.cppcms.user/978

Artyom

Re: [Cppcms-users] Session problem

[<ele...@ex...>]

I see, thank you.

What Ive done is I've created a apps::Master* pointer in the JSON_Service
class and in the constructor initialization list I called ctr_(new
apps::Master(srv)) and then in the constructor it self I do

attach(ctr_);

The question -
It it ok to use a raw pointer - does calling attach() transfer the
responsibility of deleting the pointer to cppcms::application or should I
use something like intrusive_ptr and then call attach(ctr_.get())?

Cheers,
Petr

Re: [Cppcms-users] Session problem

[<ele...@ex...>]

I see, thank you.

What Ive done is I've created a apps::Master* pointer in the JSON_Service
class and in the constructor initialization list I called ctr_(new
apps::Master(srv)) and then in the constructor it self I do

attach(ctr_);

The question -
It it ok to use a raw pointer - does calling attach() transfer the
responsibility of deleting the pointer to cppcms::application or should I
use something like intrusive_ptr and then call attach(ctr_.get())?

Cheers,
Petr

Re: [Cppcms-users] Session problem

[<ele...@ex...>]

I see, thank you.

What Ive done is I've created a apps::Master* pointer in the JSON_Service
class and in the constructor initialization list I called ctr_(new
apps::Master(srv)) and then in the constructor it self I do

attach(ctr_);

The question -
It it ok to use a raw pointer - does calling attach() transfer the
responsibility of deleting the pointer to cppcms::application or should I
use something like intrusive_ptr and then call attach(ctr_.get())?

Cheers,
Petr

Re: [Cppcms-users] Session problem

[Artyom B. <art...@ya...>]

 

> 
> What Ive done is I've created a apps::Master* pointer in the JSON_Service
> class and in the constructor initialization list I called ctr_(new
> apps::Master(srv)) and then in the constructor it self I do
> 
> attach(ctr_);

As long as it lives with the JSON service it is ok.

> 
> The question -
> It it ok to use a raw pointer - does calling attach() transfer the
> responsibility of deleting the pointer to cppcms::application or should I
> use something like intrusive_ptr and then call attach(ctr_.get())?
> 

No, attach transfers the ownership to the parent and have to pass
a raw pointer.

Note, intrusive ptr for application keeps one reference counter
for entire hierarchy

> Cheers,
> Petr
> 

Artyom