public Class getClassByNameOrNull()

in pulsar-io/hdfs3/src/main/java/org/apache/pulsar/io/hdfs3/AbstractHdfsConnector.java [219:250]

• 27 lines of code
• 5 McCabe index (conditional complexity)

        public Class<?> getClassByNameOrNull(String name) {
            final ClassLoader classLoader = getClassLoader();

            Map<String, WeakReference<Class<?>>> map;
            synchronized (cacheClasses) {
                map = cacheClasses.get(classLoader);
                if (map == null) {
                    map = Collections.synchronizedMap(new WeakHashMap<>());
                    cacheClasses.put(classLoader, map);
                }
            }

            Class<?> clazz = null;
            WeakReference<Class<?>> ref = map.get(name);
            if (ref != null) {
                clazz = ref.get();
            }

            if (clazz == null) {
                try {
                    clazz = Class.forName(name, true, classLoader);
                } catch (ClassNotFoundException | NoClassDefFoundError e) {
                    return null;
                }
                // two putters can race here, but they'll put the same class
                map.put(name, new WeakReference<>(clazz));
                return clazz;
            } else {
                // cache hit
                return clazz;
            }
        }