public void renderRuleToEPSFile(String ruleName, String file) throws Exception {
GGraph graph = createGraph(ruleName);
GEnginePS engine = new GEnginePS();
context.setEngine(engine);
graph.draw();
XJUtils.writeStringToFile(engine.getPSText(), file);
}
public void renderRuleToBitmapFile(String ruleName, String imageFormat, String file) throws Exception {
GGraph graph = createGraph(ruleName);