I´m developing a Web Service that access a Database through Hibernate.
How can I make that all the processes launched when session is created for first time (entities mapping) to be executed when I initialize the WS and not the first time I make a query to database?

Thank´s.

Is the web service deployed as part of a web application? You could always have a context listener in the web app initialize the Session?

How is the web service implemented? POJO? Stateless Session Bean? And what services are you initializing?

No, the WS isn´t part of a web application. It´s waiting for a client to make queries.
It is implemented in Java and it´s runnig on Glassfish.

I would need a way to start the processes that are automaticaly launched when session is created for fisrt time (entities mapping, etc) before I make a query to the WS.

IE: I start the WS and a client makes a query. The WS gets the session for first time, the mapping processes are launched:

configuring from resource: /hibernate.cfg.xml
Configuration resource: /hibernate.cfg.xml
Reading mappings from resource : /classes/User.hbm.xml
Mapping class: cac.classes.User -> usuarios
Reading mappings from resource : /classes/Department.hbm.xml
Mapping class: cac.classes.Department -> departamento
Reading mappings from resource : /classes/Incidence.hbm.xml
Mapping class: cac.classes.Incidence -> incidencias
Reading mappings from resource : /cac/classes/Section.hbm.xml
Mapping class: cac.classes.Section -> conexion

(it takes a few seconds)

I want that these processes to be executed before the first call.

Thank´s.