package org.opendaylight.controller.sal.binding.impl.util;
-
-
import java.util.concurrent.Callable;
+import java.util.concurrent.locks.Lock;
import static com.google.common.base.Preconditions.*;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
-import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import com.google.common.base.Joiner;
+import com.google.common.base.Optional;
+
+public final class ClassLoaderUtils {
+
+ private ClassLoaderUtils() {
+ throw new UnsupportedOperationException("Utility class");
+ }
+
+ public static <V> V withClassLoader(ClassLoader cls, Callable<V> function) throws Exception {
+ return withClassLoaderAndLock(cls, Optional.<Lock> absent(), function);
+ }
+
+ public static <V> V withClassLoaderAndLock(ClassLoader cls, Lock lock, Callable<V> function) throws Exception {
+ checkNotNull(lock, "Lock should not be null");
+ return withClassLoaderAndLock(cls, Optional.of(lock), function);
+ }
-public class ClassLoaderUtils {
-
- public static <V> V withClassLoader(ClassLoader cls,Callable<V> function) throws Exception {
- checkNotNull(cls);
- checkNotNull(function);
+ public static <V> V withClassLoaderAndLock(ClassLoader cls, Optional<Lock> lock, Callable<V> function)
+ throws Exception {
+ checkNotNull(cls, "Classloader should not be null");
+ checkNotNull(function, "Function should not be null");
+ if (lock.isPresent()) {
+ lock.get().lock();
+ }
ClassLoader oldCls = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(cls);
- V result = function.call();
- Thread.currentThread().setContextClassLoader(oldCls);
- return result;
- } catch (Exception e) {
+ return function.call();
+ } finally {
Thread.currentThread().setContextClassLoader(oldCls);
- throw new Exception(e);
+ if (lock.isPresent()) {
+ lock.get().unlock();
+ }
}
}
- public static Object construct(Constructor<? extends Object> constructor, ArrayList<Object> objects) throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
- Object[] initargs = objects.toArray(new Object[]{});
- return constructor.newInstance(initargs);
+ public static Object construct(Constructor<? extends Object> constructor, List<Object> objects)
+ throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
+ Object[] initargs = objects.toArray(new Object[] {});
+ return constructor.newInstance(initargs);
}
-
-
+
public static Class<?> loadClassWithTCCL(String name) throws ClassNotFoundException {
- if("byte[]".equals(name)) {
+ if ("byte[]".equals(name)) {
return byte[].class;
}
-
- return Thread.currentThread().getContextClassLoader().loadClass(name);
+ try {
+ return Thread.currentThread().getContextClassLoader().loadClass(name);
+ } catch (ClassNotFoundException e) {
+ String[] components = name.split("\\.");
+ String potentialOuter;
+ int length = components.length;
+ if (length > 2 && (potentialOuter = components[length - 2]) != null && Character.isUpperCase(potentialOuter.charAt(0))) {
+
+ String outerName = Joiner.on(".").join(Arrays.asList(components).subList(0, length - 1));
+ String innerName = outerName + "$" + components[length-1];
+ return Thread.currentThread().getContextClassLoader().loadClass(innerName);
+ } else {
+ throw e;
+ }
+ }
+ }
+
+ public static Class<?> tryToLoadClassWithTCCL(String fullyQualifiedName) {
+ try {
+ return loadClassWithTCCL(fullyQualifiedName);
+ } catch (ClassNotFoundException e) {
+
+ }
+ return null;
}
}
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