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package com.sun.enterprise.resource.naming;
import com.sun.appserv.connectors.internal.api.ConnectorsUtil;
import org.glassfish.resource.common.ResourceInfo;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NamingException;
import javax.naming.NameNotFoundException;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;
import javax.naming.spi.InitialContextFactory;
/**
* A proxy object factory for an external JNDI factory
*/
public class JndiProxyObjectFactory implements ObjectFactory {
// for every external-jndi-resource there is an InitialContext
// created from the factory and environment properties
private static Hashtable<ResourceInfo, Context> contextMap = new Hashtable<ResourceInfo, Context>();
public static Context removeInitialContext(ResourceInfo resourceInfo) {
return contextMap.remove(resourceInfo);
}
/**
* load the context factory
*/
private Context loadInitialContext(String factoryClass, Hashtable env) {
Object factory = ConnectorsUtil.loadObject(factoryClass);
if (factory == null) {
System.err.println("Cannot load external-jndi-resource " +
"factory-class '" + factoryClass + "'");
return null;
} else if (! (factory instanceof
javax.naming.spi.InitialContextFactory)) {
System.err.println("external-jndi-resource factory-class '"
+ factoryClass + "' must be of type "
+ "javax.naming.spi.InitialContextFactory");
return null;
}
Context context = null;
try {
context = ((InitialContextFactory)factory).getInitialContext(env);
} catch (NamingException ne) {
System.err.println("Exception thrown creating initial context " +
"for external JNDI factory '" +
factoryClass + "' " + ne.getMessage());
}
return context;
}
/**
* create the object instance from the factory
*/
public Object getObjectInstance(Object obj,
Name name, Context nameCtx, Hashtable environment)
throws NamingException {
// name to lookup in the external factory
String jndiLookupName = "";
String jndiFactoryClass = null;
ResourceInfo resourceInfo = null;
// get the target initial naming context and the lookup name
Reference ref = (Reference) obj;
Enumeration addrs = ref.getAll();
while (addrs.hasMoreElements()) {
RefAddr addr = (RefAddr) addrs.nextElement();
String prop = addr.getType();
if (prop.equals("resourceInfo")) {
resourceInfo = (ResourceInfo)addr.getContent();
}
else if (prop.equals("jndiLookupName")) {
jndiLookupName = (String) addr.getContent();
}
else if (prop.equals("jndiFactoryClass")) {
jndiFactoryClass = (String) addr.getContent();
}
}
if (resourceInfo == null) {
throw new NamingException("JndiProxyObjectFactory: no resourceInfo context info");
}
com.sun.enterprise.resource.naming.ProxyRefAddr contextAddr =
(com.sun.enterprise.resource.naming.ProxyRefAddr)ref.get(resourceInfo.getName());
Hashtable env = null;
if (contextAddr == null ||
jndiFactoryClass == null ||
(env = (Hashtable)(contextAddr.getContent())) == null) {
throw new NamingException("JndiProxyObjectFactory: no info in the " +
"reference about the target context; contextAddr = " + contextAddr + " " +
"env = " + env + " factoryClass = " + jndiFactoryClass);
}
// Context of the external naming factory
Context context = contextMap.get(resourceInfo);
if (context == null) {
synchronized (contextMap) {
context = contextMap.get(resourceInfo);
if (context == null) {
context = loadInitialContext(jndiFactoryClass, env);
contextMap.put(resourceInfo, context);
}
}
}
if (context == null)
throw new NamingException("JndiProxyObjectFactory no InitialContext" + jndiFactoryClass);
// use the name to lookup in the external JNDI naming context
try {
return context.lookup(jndiLookupName);
} catch (NameNotFoundException e) {
throw new ExternalNameNotFoundException(e);
}
}
}