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Parametrized properties

Another neat feature, is the possibility to provide parameters on method interfaces.
The property values shall respect the positional notation specified by the java.util.Formatter class:

public interface Sample extends Config {
    @DefaultValue("Hello Mr. %s!")
    String helloMr(String name);
}

Sample cfg = ConfigFactory.create(Sample.class);
print(cfg.helloMr("Luigi")); // will println 'Hello Mr. Luigi!'

Disabling parameters expansion

The parametrized properties feature can be disabled if the user doesn't find it convenient for some reason.

This can be done using the @DisableFeature annotation:

public interface Sample extends Config {

    @DisableFeature(PARAMETER_FORMATTING)
    @DefaultValue("Hello %s.")    
    public String hello(String name); 
        // will return "Hello %s." ignoring the parameter.

}

The @DisabledFeature annotation can be applied on method level and/or on the interface level. When applied on the interface level, it will apply to all the methods of the interface:

@DisableFeature(PARAMETER_FORMATTING)
public interface Sample extends Config {

    @DefaultValue("Hello %s.")    
    public String hello(String name); 
        // will return "Hello %s." ignoring the parameter.

}