CODEWITHSUNDEEP
javaspringgrails
Thody
Thody

Reputation: 1990

How do I get an instance of a Grails service programmatically?

I have an external data source, which will return a string indicating the name of a Grails service to use.

What's the syntax to get an instance of this service programatically given the name of the service as a String?

ie. given 'GoogleWeather', give me an instance of GoogleWeatherService.

Thanks!

Upvotes: 11

Views: 11546

Answers (2)

Michael Easter
Michael Easter

Reputation: 24498

The Grails documentation describes a way to get a service when in a servlet. This might be useful, if you can obtain the same objects in your context:

ApplicationContext ctx = (ApplicationContext)ApplicationHolder.getApplication().getMainContext();
CountryServiceInt service = (CountryServiceInt) ctx.getBean("countryService");
String str = service.sayHello(request.getParameter.("name"));

Upvotes: 21

Marcin
Marcin

Reputation: 323

Since ApplicationHolder has been deprecated, this is another way to get the ApplicationContext:

ApplicationContext ctx = Holders.grailsApplication.mainContext

Upvotes: 29

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