javaclients
Class HelloWorldNative2

java.lang.Object
  javaclients.HelloWorldNative2

All Implemented Interfaces:

I_Plugin

public class HelloWorldNative2
extends java.lang.Object
implements I_Plugin

This native client plugin is loaded by xmlBlaster on startup, it then connects to xmlBlaster and subscribes to a topic and publishes a message.

You need to register this plugin to xmlBlasterPlugins.xml, for example:

  <plugin id='HelloWorldNative2' className='javaclients.HelloWorldNative2'>
     <attribute id='loginName'>nativeClient2</attribute>
     <attribute id='topicName'>aNativeTopic2</attribute>
     <action do='LOAD' onStartupRunlevel='9' sequence='6' onFail='resource.configuration.pluginFailed'/>
     <action do='STOP' onShutdownRunlevel='6' sequence='5'/>
  </plugin>
 

Note how the attributes loginName and topicName are passed to the plugin.

As a protocol driver to talk to xmlBlaster it has configured "LOCAL", this plugin works only if client and server is in the same virtual machine (JVM). Other protocols like CORBA or SOCKET would work as well but carry the overhead of sending the message over TCP/IP.

See Also:

run level requirement

Field Summary

private I_XmlBlasterAccess	con
private Global	glob
private static java.util.logging.Logger	log
private java.lang.String	loginName
private PluginInfo	pluginInfo
private java.lang.String	topicName

Constructor Summary

HelloWorldNative2()
To start as a plugin

HelloWorldNative2(java.lang.String[] args)
To start as a standalone client: java javaclients.HelloWorldNative2

Method Summary

void	finalize()
java.lang.String	getType()
java.lang.String	getVersion()
void	init(Global glob, PluginInfo pluginInfo) This method is called by the PluginManager.
static void	main(java.lang.String[] args)
private void	pubsub()
void	shutdown() Cleans up the resource.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

glob

private Global glob

pluginInfo

private PluginInfo pluginInfo

log

private static java.util.logging.Logger log

loginName

private java.lang.String loginName

topicName

private java.lang.String topicName

con

private I_XmlBlasterAccess con

Constructor Detail

HelloWorldNative2

public HelloWorldNative2()

To start as a plugin

HelloWorldNative2

public HelloWorldNative2(java.lang.String[] args)

To start as a standalone client: java javaclients.HelloWorldNative2

Method Detail

pubsub

private final void pubsub()

init

public void init(Global glob,
                 PluginInfo pluginInfo)
          throws XmlBlasterException

Description copied from interface: I_Plugin

This method is called by the PluginManager.

Example how options are evaluated:

   // An entry in xmlBlaster.properties (in one line):
   MimeSubscribePlugin[ContentLenFilter][1.0]=\
                 org.xmlBlaster.engine.mime.demo.ContentLenFilter,\
                 DEFAULT_MAX_LEN=200,DEFAULT_MIN_LEN=20

  // Access it like this:
  java.util.Properties props = pluginInfo.getParameters();
  String maxLen = (String)props.get("DEFAULT_MAX_LEN");
  String throwLen = (String)props.get("THROW_EXCEPTION_FOR_LEN");
 

Specified by:

init in interface I_Plugin

Throws:

XmlBlasterException

getType

public java.lang.String getType()

Specified by:

getType in interface I_Plugin

getVersion

public java.lang.String getVersion()

Specified by:

getVersion in interface I_Plugin

shutdown

public void shutdown()

Description copied from interface: I_Plugin

Cleans up the resource.

Specified by:

shutdown in interface I_Plugin

finalize

public void finalize()

Overrides:

finalize in class java.lang.Object

main

public static void main(java.lang.String[] args)