Provide some way to bind services without explicit binder.bind() calls or
builder methods
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Key: TAP5-375
URL: https://issues.apache.org/jira/browse/TAP5-375
Project: Tapestry 5
Issue Type: New Feature
Affects Versions: 5.0.16
Reporter: Thiago H. de Paula Figueiredo
Priority: Minor
Full discussion at
http://www.nabble.com/Tapestry-IoC%3A-binding-service-without-code%2C-just-convention-over-configuration-td20585891.html.
I have been wondering about some ways to write even less configuration with
Tapestry-IoC and yet more convention over configuration.
At first we had:
public static void bind(ServiceBinder binder) {
binder.bind(Service.class, ServiceImplementation.class);
}
Then, if ServiceImplementation is in the same package, we can write:
public static void bind(ServiceBinder binder) {
binder.bind(Service.class);
}
I'm thinking of not even have that binder.bind() call, automatically binding
services located in packages defined by some convention. How could I implement
that? Can we add services to a Registry or use ServiceBinder just like we can
use add objects to a service distributed configuration? I spent some time
looking at the Tapestry sources, but I couldn't find an answer.
Another related funcionality I was thinking was to automatically provide some
well-know service implementations when no one was explicitly providaded.
Example: suppose we have the convention that every entity class must a
corresponding controller class. Then I want to provide a default controller
implementation for it if none is provided, because some components and pages
expect one controller instance for each entity class. How could I do that?
My goal is to to have non-trivial zero configuration (or almost zero
configuration) applications in Tapestry, provided that they follow the
conventions.
Em Wed, 19 Nov 2008 15:31:16 -0300, Howard Lewis Ship <[EMAIL PROTECTED]>
escreveu:
> Interesting idea. You could probably put something together around
> ClassNameLocator, i.e., a wrapper that given package names, find
> interfaces inside those packages that have matching Impl classes. i.e.
>
> public static void bind(ServiceBinder binder)
> {
> new AutoServiceBinder("my.package.root").bind(binder);
> }
How can I get a ClassNameLocator instance in bind(ServiceBinder binder)?
Trying to inject through public static void bind(ServiceBinder binder,
ClassNameLocator classNameLocator) does not work (method is never
invoked). It must be static, so I cannot use a constructor in my module
class.
And what about the creation of default implementation for unbound services?
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