Re: Configuring two instances of the same class

[Willi Schönborn]

On 17/01/2010 12:14, Willi Schönborn wrote:

On 17/01/2010 00:18, Dhanji R. Prasanna wrote:

2010/1/17 Willi Schönborn <w.schoenb...@googlemail.com <mailto:w.schoenb...@googlemail.com>>

    On 16/01/2010 18:02, Kartik Kumar wrote:

    This may help.
    http://code.google.com/p/google-guice/wiki/BindingAnnotations

    No, i dont want to bind multiple Implementations to the same
    interface, i want to configure (!)
    multiple instances of the same class independently using
    annotations (@Named).


You're referring to the robot legs problem:
http://code.google.com/p/google-guice/wiki/FrequentlyAskedQuestions

(look for "robot legs")

An idea? Anyone?

I managed to solve a part of the problem using private modules, but there is something left i dont know

how to do:

Better example:
    public interface Database
and
    class MySqlDatabase implements Database {

        @Named("database.mysql.username")
        private String username;

    }

Lets assume i actually want to work with two different mysql databases and

i have a settings.properties which is bound using Names.bindProperties() and contains:

database.mysql.username = test
database.mysql.second.username = user

I need a way to "override" a constant bound by Names.bindProperties(...)
in a private module by using the value of another constant binding.
E.g. I want to set the value of "database.mysql.username" to the value of
"database.mysql.second.username" in my private module without
the need to parse the properties file on my own.

Dhanji.



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