Accessing and Displaying the Attributes of an AMX MBean

The displayAllAttributes() method demonstrates how to access and display the attributes of an AMX MBean.

Example 16–9 Accessing and Displaying the Attributes of an AMX MBean

[...]
displayAllAttributes( final AMX item )
{
    println( "\n--- Attributes for " + item.getJ2EEType() +
        "=" + item.getName() + " ---" );
    final Extra extra = Util.getExtra( item );
    final Map attrs    = extra.getAllAttributes();
    final Iterator iter = attrs.keySet().iterator();
    while ( iter.hasNext() )
    {
        final String name = (String)iter.next();
        final Object value = attrs.get( name );
        println( name + "=" + toString( value ) );
    }
}
public void
displayAllAttributes( final String j2eeType )
{
    final Set items = queryForJ2EEType( j2eeType );
    if ( items.size() == 0 )
    {
        println( "No {@link AMX} of j2eeType "
            + SampleUtil.quote( j2eeType ) + " found" );
    }
    else
    {
        final Iterator iter= items.iterator();
        while ( iter.hasNext() )
        {
            final AMX amx = (AMX)iter.next();
            displayAllAttributes( amx );
            println( "" );
        }
    }
}
[...]

The displayAllAttributes() method calls the AMX.getName() and AMX.getJ2EEType() methods for an AMX MBean and prints the results onscreen. It then gets all the attributes for that MBean by calling com.sun.appserv.management.base.Extra.getAllAttributes() on the Extra instance returned by com.sun.appserv.management.base.Util.getExtra(). This is repeated for every MBean.

The attributes of AMX MBeans of a certain J2EE type can be displayed by specifying the J2EE type when the command is run. In this case, displayAllAttributes() calls queryForJ2EEType(). The queryForJ2EEType() method calls the com.sun.appserv.management.base.QueryManager.queryPropSet() method on the specified J2EE type to identify all elements of that type in the domain.