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import java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME)
@interface Colored { String color(); }
@Retention(RetentionPolicy.RUNTIME)
@interface Material { String material(); }
@Colored(color="yellow") @Material(material="wood")
public class AtTarget2 {
public static void main(String[]argv) {
new AtTarget2().m();
new SubA().m();
new SubB().m();
}
@Colored(color="red")
public void m() {
System.err.println("method running\n");
}
}
@Material(material="metal") @Colored(color="green")
class SubA extends AtTarget2 { }
@Material(material="jelly") @Colored(color="magenta")
class SubB extends SubA { }
aspect X {
int adviceexecutions = 0;
before(Colored c,Material m): call(* *(..)) && !within(X) && @target(c) && @target(m) {
System.err.println("advice running ("+c.color()+","+m.material()+")");
adviceexecutions++;
if (adviceexecutions == 1) {
if (!c.color().equals("yellow"))
throw new RuntimeException("First advice execution, color should be yellow");
if (!m.material().equals("wood"))
throw new RuntimeException("First advice execution, material should be wood");
}
if (adviceexecutions == 2) {
if (!c.color().equals("green"))
throw new RuntimeException("Second advice execution, color should be green");
if (!m.material().equals("metal"))
throw new RuntimeException("Second advice execution, material should be metal");
}
if (adviceexecutions == 3) {
if (!c.color().equals("magenta"))
throw new RuntimeException("Third advice execution, color should be magenta");
if (!m.material().equals("jelly"))
throw new RuntimeException("Third advice execution, material should be jelly");
}
if (adviceexecutions > 3)
throw new RuntimeException("Advice should only run twice");
}
}
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