unable to call getKeys using JNDI
I an unable to call getKeys on a TreeCache. I get the Cache by doing a JNDI lookup. Once I get it I can do a put and get with no problem. When I call getKeys I get an NotSerializableException on java.util.HashMap$KeySet.
Here is my JUnit test and results..
package com.cexp.common.enterprise;
import java.util.Set;
import java.util.Collection;
import java.util.Iterator;
import junit.framework.TestCase;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jboss.cache.TreeCacheMBean;
import javax.naming.NameNotFoundException;
import javax.naming.InitialContext;
import javax.naming.NameParser;
import javax.naming.NamingException;
import javax.naming.Context;
import javax.naming.Name;
/** Simple tests for the ContextFramework.
* @author kkalmbac
*
*/
public class TestCache extends TestCase {
/** the logger. */
private static Log log = LogFactory.getLog(TestCache.class);
private InitialContext context;
private TreeCacheMBean theCache;
public static Object lookup(Context context, Name name)
throws NamingException
{
// Try the lookup twice because, if the naming server has gone down,
// the jndi connection in the context is stale and doesn't seem to
// get recreated until after the first lookup attempt. The second
// lookup attempt will then succeed.
int lookupCount = 0;
int lookupAttempts = 2;
while (lookupCount++ < lookupAttempts)
{
try
{
if(log.isDebugEnabled()){
log.debug("lookup() name=" + name);
}
return context.lookup(name);
}
catch (NamingException e)
{
if(log.isDebugEnabled()){
log.debug("lookup() NamingException", e);
}
if (lookupCount == lookupAttempts)
throw e;
}
}
return null;
}
public static Object lookup(Context context, String name)
throws NamingException
{
NameParser parser = context.getNameParser(context.getNameInNamespace());
return lookup(context, parser.parse(name));
}
protected InitialContext getContext() {
if (context == null) {
try {
context = new InitialContext();
} catch (Exception e) {
log.error("could not get initial context", e);
}
}
return context;
}
private TreeCacheMBean getCache() {
if (log.isDebugEnabled())
{
log.debug("getCache()");
}
if (theCache == null)
{
try
{
theCache = (TreeCacheMBean)lookup(getContext(), "MyTreeCache");
if (log.isDebugEnabled())
{
log.debug("cache found " + theCache);
}
}
catch (NameNotFoundException e)
{
}
catch (Exception e)
{
}
}
return theCache;
}
/** Constructor.
* @param s the test name
*/
public TestCache(String s) {
super(s);
System.setProperty(
"java.naming.factory.initial",
"org.jnp.interfaces.NamingContextFactory");
System.setProperty(
"java.naming.factory.url.pkgs",
"org.jboss.naming:org.jnp.interfaces");
System.setProperty(
"jnp.socketFactory",
"org.jnp.interfaces.TimedSocketFactory");
System.setProperty("java.naming.provider.url", "jnp://localhost:1099");
System.setProperty("jnp.timeout", "0");
System.setProperty("jnp.sotimeout", "0");
}
/** Simple tests for the UserContext. */
public void testGetKeys() {
TreeCacheMBean cache = getCache();
try {
cache.put("/","Test","value");
Object o = cache.get("/", "Test");
System.out.println("We got " + o);
Set s = cache.getKeys("/");
} catch (Exception e) {
e.printStackTrace();
}
}
}
Here is the results..
We got value java.lang.reflect.UndeclaredThrowableException at $Proxy0.getKeys(Unknown Source) at com.cexp.common.enterprise.TestCache.testGetKeys(TestCache.java:135) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at junit.framework.TestCase.runTest(TestCase.java:154) at junit.framework.TestCase.runBare(TestCase.java:127) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:392) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:276) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:167) Caused by: java.io.NotSerializableException: java.util.HashMap$KeySet at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278) at org.jboss.remoting.RemoteMethodInvocationResult.<init>(RemoteMethodInvocationResult.java:47) at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:284) at org.jboss.remoting.transport.socket.SocketServerInvoker$Client.run(SocketServerInvoker.java:208)
Any help at all would be appreciated.
Thanks
-Kevin
