[jboss-jira] [JBoss JIRA] Commented: (JBAS-5048) Lookup of resource bound via ExternalContext using a CompondName results in serialization of org.jnp.interfaces.FastNamingProperties
[ http://jira.jboss.com/jira/browse/JBAS-5048?page=comments#action_12393495 ]
Mark van Holsteijn commented on JBAS-5048:
------------------------------------------
I have created a workaround for this particular issue: In the proxy provided by the nested
class CachedContext, I convert any parameter of the class javax.naming.Name by a Name as
delivered by the NameParser associated with the external context. It does do the trick for
cachedContexts. Hope this helps into providing a timely solution.
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable
{
Object value = null;
for(int i = 0; args != null && i < args.length; i++) {
if(args[i] != null && args[i] instanceof Name) {
try {
Name n = parser.parse(args[i].toString());
if(log.isDebugEnabled()) {
log.debug("Replacing argument " + i + " of method '"
+ method.getName()
+ "' with ExternalContext Name, was '" + args[i].toString()
+ "' replaced by '" + n.toString() + "'.");
}
args[i] = n;
} catch (NamingException e) {
log.warn("Failed to replace argument " + i + "(" +
args[i].toString() + ") of method '"
+ method.getName()
+ "' with ExternalContext Name.", e);
}
}
}
Lookup of resource bound via ExternalContext using a CompondName
results in serialization of org.jnp.interfaces.FastNamingProperties
------------------------------------------------------------------------------------------------------------------------------------
Key: JBAS-5048
URL: http://jira.jboss.com/jira/browse/JBAS-5048
Project: JBoss Application Server
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: Naming
Affects Versions: JBossAS-4.0.5.GA
Reporter: Mike Clark
Assigned To: Scott M Stark
When a user registers resources using the org.jboss.naming.ExternalContext, they can only
successfully lookup resources on the remote JNDI system if they first lookup the Context
registered in the ExternalContext and then look up resources on the returned Context.
Looking up the full name results in the use of the org.jnp.interfaces.FastNamingProperties
class which is not generally available on the remote JNDI implementation.
So, for example, a user might register "external/foreign_jndi" using the
ExternalContext. Looking up resource, a/b/c as follows works:
Context initialContext = new InitialContext();
Context remoteContext = (Context)
initialContext.lookup("external/foreign_jndi");
Object obj = remoteContext.lookup("a/b/c");
while, the more direct
Context initialContext = new InitialContext();
Object obj = initialContext.lookup("external/foreign_jndi/a/b/c");
results in a "java.lang.ClassNotFoundException:
org.jnp.interfaces.FastNamingProperties" exception on the remote JNDI system.
It appears to occur because the FastNamingProperties class is used in the construction of
the CompoundName in the org.jnp.interfaces.NamingParser. So, in the first case, the
parsing of "a/b/c" is handled by the foreign JNDI system, while in the latter,
the CompoundName containing the FastNamingProperties is passed to the foreign JNDI system.
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