/**
* Renders the page-to-page navigation graph into the file {@code navgraph.gv} in the {@code
* .errai} cache directory.
*/
private void renderNavigationToDotFile(BiMap<String, MetaClass> pages) {
final File dotFile = new File(RebindUtils.getErraiCacheDir().getAbsolutePath(), "navgraph.gv");
PrintWriter out = null;
try {
out = new PrintWriter(dotFile);
out.println("digraph Navigation {");
final MetaClass transitionToType = MetaClassFactory.get(TransitionTo.class);
final MetaClass transitionAnchorType = MetaClassFactory.get(TransitionAnchor.class);
final MetaClass transitionAnchorFactoryType =
MetaClassFactory.get(TransitionAnchorFactory.class);
for (Map.Entry<String, MetaClass> entry : pages.entrySet()) {
String pageName = entry.getKey();
MetaClass pageClass = entry.getValue();
// entry for the node itself
out.print("\"" + pageName + "\"");
Page pageAnnotation = pageClass.getAnnotation(Page.class);
List<Class<? extends PageRole>> roles = Arrays.asList(pageAnnotation.role());
if (roles.contains(DefaultPage.class)) {
out.print(" [penwidth=3]");
}
out.println();
for (MetaField field : getAllFields(pageClass)) {
if (field.getType().getErased().equals(transitionToType)
|| field.getType().getErased().equals(transitionAnchorType)
|| field.getType().getErased().equals(transitionAnchorFactoryType)) {
MetaType targetPageType = field.getType().getParameterizedType().getTypeParameters()[0];
String targetPageName = pages.inverse().get(targetPageType);
// entry for the link between nodes
out.println(
"\""
+ pageName
+ "\" -> \""
+ targetPageName
+ "\" [label=\""
+ field.getName()
+ "\"]");
}
}
}
out.println("}");
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
} finally {
if (out != null) {
out.close();
}
}
}
public String generate(String packageName, String clazzName) {
File fileCacheDir = RebindUtils.getErraiCacheDir();
File cacheFile = new File(fileCacheDir.getAbsolutePath() + "/" + clazzName + ".java");
final Set<Class<? extends Annotation>> annos = new HashSet<Class<? extends Annotation>>();
annos.add(Portable.class);
annos.add(ExposeEntity.class);
String gen;
if (RebindUtils.hasClasspathChangedForAnnotatedWith(annos) || !cacheFile.exists()) {
log.info("generating marshalling class...");
long st = System.currentTimeMillis();
gen = _generate(packageName, clazzName);
log.info("generated marshalling class in " + (System.currentTimeMillis() - st) + "ms");
RebindUtils.writeStringToFile(cacheFile, gen);
} else {
gen = RebindUtils.readFileToString(cacheFile);
log.info("nothing has changed. using cached marshaller factory class.");
}
return gen;
}
