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6888552: Allow JNDI to be used when java.applet is not present

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Reviewed-by: vinnie
This commit is contained in:
Alan Bateman 2009-10-09 10:06:58 +01:00
parent e31cb36301
commit c44758929f
1 changed files with 50 additions and 3 deletions
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53
jdk/src/share/classes/com/sun/naming/internal/ResourceManager.java
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@ -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 @@ public final class ResourceManager {
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 @@ public final class ResourceManager {
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 @@ public final class ResourceManager {
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.