ch13s26.html

详细介绍了jboss3.0的配置等

import java.io.InputStream;
import java.util.HashMap;
import javax.naming.CompositeName;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.Name;
import javax.naming.NamingException;
import org.jboss.naming.NonSerializableFactory;

public class JNDIMap extends org.jboss.util.ServiceMBeanSupport implements JNDIMapMBean
{
    private String jndiName;
    private HashMap contextMap = new HashMap();

    public String getJndiName()
    {
       return jndiName;
    }
    public void setJndiName(String jndiName) throws NamingException
    {
        String oldName = this.jndiName;
        this.jndiName = jndiName;
        if( super.getState() == STARTED )
        {
            unbind(oldName);
            try
            {
                rebind();
            }
            catch(Exception e)
            {
                NamingException ne = new NamingException("Failed to update jndiName");
                ne.setRootCause(e);
                throw ne;
            }
        }
    }

    public String getName()
    {
        return "JNDIMap(" + jndiName + ")";
    }

    public void startService() throws Exception
    {
        rebind();
    }

    public void stopService()
    {
        unbind(jndiName);
    }

    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);
        NonSerializableFactory.rebind(parentCtx, atom, contextMap);
    }
    private void unbind(String jndiName)
    {
        try
        {
            Context rootCtx = (Context) new InitialContext();
            rootCtx.unbind(jndiName);
            NonSerializableFactory.unbind(jndiName);
        }
        catch(NamingException e)
        {
            log.exception(e);
        }
    }
}
</pre></div></div></div><div class="section"><a name="d0e9795"></a><div class="titlepage"><div><h3 class="title"><a name="d0e9795"></a>Sample jboss.jcml mbean entry</h3></div></div><p>A sample jboss.jcml mbean entry for the JNDIMap MBean is given in <a href="ch13s26.html#howto.mbeans.config" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/ch13s26.html#howto.mbeans.config" title="Figure 13.4. Sample jboss.jcml entry for the JNDIMap MBean">Figure 13.4</a>. This binds a HashMap object under the "inmemory/maps/MapTest" JNDI name.
			</p><div class="figure"><p><a name="howto.mbeans.config"></a><b>Figure 13.4. Sample jboss.jcml entry for the JNDIMap MBean</b></p><pre class="programlisting">
&lt;server&gt;
...
  &lt;mbean code="org.jboss.naming.NamingService" name="DefaultDomain:service=Naming"&gt;
    &lt;attribute name="Port"&gt;1099&lt;/attribute&gt;
  &lt;/mbean&gt;

  &lt;!-- Add the JNDIMap entry after the NamingService since the NamingService must
	be running in order for the JNDIMap bean to start.
  --&gt;
  &lt;mbean code="JNDIMap" name="DefaultDomain:service=JNDIMap,jndiName=inmemory/maps/MapTest"&gt;
    &lt;attribute name="JndiName"&gt;inmemory/maps/MapTest&lt;/attribute&gt;
  &lt;/mbean&gt;
...
&lt;/server&gt;
				
				</pre><pre class="programlisting">
// Sample lookup code
InitialContext ctx = new InitialContext();
HashMap map = (HashMap) ctx.lookup("inmemory/maps/MapTest");
				</pre></div></div></div><table border="0" cellpadding="0" cellspacing="0" height="65"><tr height="65"><td rowspan="2"><img src="gbar.gif" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/gbar.gif" width="432" height="79"></td><td rowspan="2" background="gbar.gif" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/gbar.gif" width="100%" align="right" valign="top"><a href="index.html" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/index.html"><img src="doc.gif" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/doc.gif" border="0"></a><a href="ch13.html" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/ch13.html"><img src="toc.gif" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/toc.gif" border="0"></a><a href="ch13s21.html" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/ch13s21.html"><img src="prev.gif" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/prev.gif" border="0"></a><a href="ch13s39.html" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/ch13s39.html"><img src="next.gif" tppabs="http://www.huihoo.org/jboss/online_manual/3.0/next.gif" border="0"></a></td></tr><tr></tr></table></body></html>