Eclipse Plugin that may debug the added class in the ireport's classpath upon preview

Let me to enumerate:

1) Eclipse Plugin specially for Eclipse Ganymede 3.4.2 (SR2)

2) Debug the added classes in the ireport's classpath upon preview.

e.g.

i add class in the ireport's classpath with static function and call one of the textfield. During the preview, the static function will call and switch to debug mode in order to see the step by step process.