I'm using java 6 annotation processing api. I have followed the following excellent tutorial for creating an annotation processor that displays a message at build-time:
http://kerebus.com/2011/02/using-java-6-processors-in-eclipse/
However, in my case, I have a simple class as such:
import java.lang.annotation.ElementType;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(value = ElementType.METHOD)
public @interface Criteria {
String id();
double width();
double height();
}
As you can see, the aforementioned annotation is made available to the JVM at runtime using the meta-annotation 'Retention'. I use this 'Criteria' annotation in the source code of another class to annotate a method, like so:
@Criteria(id = "fooBar",
width = 22,
height = 10
)
public void fooStream() {
System.out.println("foo stream method");
}
At runtime, I want to include the 'fooStream' method in another class, ONLY if variables that are passed in match the values of the elements in the @Criteria annotation, namely 'width' and 'height'. My question is, how could I take the method 'fooStream' and inject this into another class at run-time? Is this even possible? I'm not looking for any code examples, just answers to the two aforementioned questions. Also, in the link at the top, there is an example of generating a code using 'JavaFileObject' and 'Writer' instances, where the generated code is passed as a string.
