/**
* Wraps given object using proxy created by {@link ProxyInstanceFactory}.
*
* @param obj
* @return
* @throws InstantiationException
* @throws IllegalAccessException
*/
@SuppressWarnings("unchecked")
private <T> T proxyImpl(T obj) throws InstantiationException, IllegalAccessException {
ChainStateHolder.setChain(new ArrayList<String>());
retrievePossibleChains();
Integer chainIndex = ChainStateHolder.getCurrentChainIndex();
if (chainIndex == null) {
chainIndex = 0;
} else {
++chainIndex;
}
ChainStateHolder.setCurrentChainIndex(chainIndex);
return (T) proxyInstanceFactory.proxy(obj, (Class<T>) obj.getClass());
}
private void retrievePossibleChains() {
StackTraceElement[] stackTrace = new Throwable().getStackTrace();
String wrapperName = null;
for (StackTraceElement elem : stackTrace) {
if (!libraryClassesInChain.contains(elem)) {
StackTraceElement libraryClassElement = getLibraryClassElement(elem);
if (libraryClassElement == null) {
ChainStateHolder.setPossibleChains(
chainRetriever.getInvokationChains(
elem.getClassName(), elem.getMethodName(), elem.getLineNumber(), wrapperName));
currentLine.set(elem.getLineNumber());
return;
}
libraryClassesInChain.add(libraryClassElement);
}
wrapperName = elem.getMethodName();
}
throw new IllegalStateException("No caller found");
}