6888552: Allow JNDI to be used when java.applet is not present
Reviewed-by: vinnie
--- a/jdk/src/share/classes/com/sun/naming/internal/ResourceManager.java Fri Oct 09 09:59:54 2009 +0100
+++ b/jdk/src/share/classes/com/sun/naming/internal/ResourceManager.java Fri Oct 09 10:06:58 2009 +0100
@@ -25,11 +25,12 @@
package com.sun.naming.internal;
-import java.applet.Applet;
import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
import java.lang.ref.WeakReference;
+import java.lang.reflect.Method;
+import java.lang.reflect.InvocationTargetException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
@@ -112,6 +113,52 @@
private static final WeakHashMap urlFactoryCache = new WeakHashMap(11);
private static final WeakReference NO_FACTORY = new WeakReference(null);
+ /**
+ * A class to allow JNDI properties be specified as applet parameters
+ * without creating a static dependency on java.applet.
+ */
+ private static class AppletParameter {
+ private static final Class<?> clazz = getClass("java.applet.Applet");
+ private static final Method getMethod =
+ getMethod(clazz, "getParameter", String.class);
+ private static Class<?> getClass(String name) {
+ try {
+ return Class.forName(name, true, null);
+ } catch (ClassNotFoundException e) {
+ return null;
+ }
+ }
+ private static Method getMethod(Class<?> clazz,
+ String name,
+ Class<?>... paramTypes)
+ {
+ if (clazz != null) {
+ try {
+ return clazz.getMethod(name, paramTypes);
+ } catch (NoSuchMethodException e) {
+ throw new AssertionError(e);
+ }
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Returns the value of the applet's named parameter.
+ */
+ static Object get(Object applet, String name) {
+ // if clazz is null then applet cannot be an Applet.
+ if (clazz == null || !clazz.isInstance(applet))
+ throw new ClassCastException(applet.getClass().getName());
+ try {
+ return getMethod.invoke(applet, name);
+ } catch (InvocationTargetException e) {
+ throw new AssertionError(e);
+ } catch (IllegalAccessException iae) {
+ throw new AssertionError(iae);
+ }
+ }
+ }
// There should be no instances of this class.
private ResourceManager() {
@@ -143,7 +190,7 @@
if (env == null) {
env = new Hashtable(11);
}
- Applet applet = (Applet)env.get(Context.APPLET);
+ Object applet = env.get(Context.APPLET);
// Merge property values from env param, applet params, and system
// properties. The first value wins: there's no concatenation of
@@ -157,7 +204,7 @@
Object val = env.get(props[i]);
if (val == null) {
if (applet != null) {
- val = applet.getParameter(props[i]);
+ val = AppletParameter.get(applet, props[i]);
}
if (val == null) {
// Read system property.