Hi,
I try to adapt that MBean example in JBoss doc wich puts a HashMap in the
InitialContext. Now I try from another class (a struts ActionClass) to
access that HashMap the Object I get is null. Here is the code wich I use to
access that HashMap:
java.util.Properties p = System.getProperties();
p.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
p.put(javax.naming.Context.PROVIDER_URL, "localhost");
HashMap map = null;
try {
javax.naming.InitialContext jndiContext = new
javax.naming.InitialContext(p);
Context subContext = (Context)jndiContext.lookup("mt");
Object obj = subContext.lookup("MetaObjectFactory");
map = (HashMap) obj;
} catch(NamingException e) {
log.error("NamingException", e);
}
The object subContext contains correctly mt but it returns null for the name
MetaObjectFactory.
Here is the MBean that I use:
public class MetaObjectReader
extends ServiceMBeanSupport
implements MetaObjectReaderMBean {
private String configurationFile;
private String jndiName;
/**
* @see ServiceMBean#getName()
*/
public String getName() {
return "DynamicObjectModelFactoryMBean";
}
/**
* @see DynamicObjectModelFactoryMBeanI#setConfigurationFile(String)
*/
public void setConfigurationFile(String fileName) throws NamingException {
this.configurationFile = fileName;
}
/**
* @see DynamicObjectModelFactoryMBeanI#getConfigurationFile()
*/
public String getConfigurationFile() {
return this.configurationFile;
}
/**
* @see DynamicObjectModelFactoryMBeanI#setJNDIName(String)
*/
public void setJndiName(String name) throws NamingException {
String oldName = this.jndiName;
this.jndiName = name;
if (super.getState() == STARTED) {
unbind(oldName);
try {
rebind();
} catch (Exception e) {
NamingException ne = new NamingException("Failed to
update jndiName");
ne.setRootCause(e);
throw ne;
}
}
}
/**
* @see DynamicObjectModelFactoryMBeanI#getJNDIName()
*/
public String getJndiName() {
return jndiName;
}
public void startService() throws Exception {
readConfiguration();
rebind();
}
public void stopService() {
unbind(jndiName);
}
private void readConfiguration() {
}
private static Context createContext(Context rootContext, Name name)
throws NamingException {
Context subctx = rootContext;
for (int n = 0; n < name.size(); n++) {
String atom = name.get(n);
try {
Object obj = subctx.lookup(atom);
subctx = (Context) obj;
} catch (NamingException e) {
// No binding exists, create a subcontext
subctx = subctx.createSubcontext(atom);
}
}
return subctx;
}
private void rebind() throws NamingException {
InitialContext rootCtx = new InitialContext();
// Get the parent context into which we are to bind
Name fullName = rootCtx.getNameParser("").parse(jndiName);
log.debug("fullName=" + fullName);
Name parentName = fullName;
if (fullName.size() > 1)
parentName = fullName.getPrefix(fullName.size() - 1);
else
parentName = new CompositeName();
Context parentCtx = createContext(rootCtx, parentName);
Name atomName = fullName.getSuffix(fullName.size() - 1);
String atom = atomName.get(0);
// hier die Factory einbinden
NonSerializableFactory.rebind(parentCtx, atom, new HashMap());
}
private void unbind(String jndiName) {
try {
Context rootCtx = (Context) new InitialContext();
rootCtx.unbind(jndiName);
NonSerializableFactory.unbind(jndiName);
} catch (NamingException e) {
log.error("NamingException", e);
}
}
}
MANY Thanks and any suggestions are welcome !
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