private Mapping checkPatternFileMatching(String fileName) {
		Mapping entry = null;
		boolean matchesFileName = false;
		Iterator<Mapping> it = vectorMapping.iterator();		

		while (it.hasNext()) {
			entry = (Mapping)it.next();	

			Matcher m = entry.pattern.matcher(fileName);
			matchesFileName = m.matches();

			// Verify if this fileName matches de filename
			if (matchesFileName) {
				return entry;
			}

		}
		return null;

	}