org.xmlBlaster.protocol.jdbc
Class CallbackJdbcDriver

java.lang.Object
  org.xmlBlaster.protocol.jdbc.CallbackJdbcDriver

All Implemented Interfaces:

I_CallbackDriver, I_Plugin

public class CallbackJdbcDriver
extends java.lang.Object
implements I_CallbackDriver

This object sends a MsgUnitRaw back to a client using jdbc interface, in the same JVM.

The I_CallbackDriver.update() method of the client will be invoked

Author:

xmlBlaster@marcelruff.info

See Also:

JdbcDriver

Field Summary

private CallbackAddress	callbackAddress
private Global	glob
private static java.util.logging.Logger	log
private java.lang.String	ME

Constructor Summary

CallbackJdbcDriver()

Method Summary

java.lang.String	getName() Get a human readable name of this driver
java.lang.String	getProtocolId() Access the xmlBlaster internal name of the protocol driver.
java.lang.String	getRawAddress() Get the address how to access this driver.
java.lang.String	getType() Enforced by I_Plugin
java.lang.String	getVersion() Enforced by I_Plugin
void	init(Global glob, CallbackAddress callbackAddress) Get callback reference here.
void	init(Global glob, PluginInfo pluginInfo) This method is called by the PluginManager (enforced by I_Plugin).
boolean	isAlive()
java.lang.String	ping(java.lang.String qos) Ping to check if callback server is alive.
I_ProgressListener	registerProgressListener(I_ProgressListener listener) Register a listener for to receive information about the progress of incoming data.
java.lang.String[]	sendUpdate(MsgUnitRaw[] msgArr) This sends the SQL query to the JDBC service for processing.
void	sendUpdateOneway(MsgUnitRaw[] msgArr) The oneway variant, without return value.
void	shutdown() This method shuts down the driver.

Methods inherited from class java.lang.Object

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

Field Detail

ME

private java.lang.String ME

glob

private Global glob

log

private static java.util.logging.Logger log

callbackAddress

private CallbackAddress callbackAddress

Constructor Detail

CallbackJdbcDriver

public CallbackJdbcDriver()

Method Detail

getName

public java.lang.String getName()

Get a human readable name of this driver

Specified by:

getName in interface I_CallbackDriver

getProtocolId

public java.lang.String getProtocolId()

Access the xmlBlaster internal name of the protocol driver.

Specified by:

getProtocolId in interface I_CallbackDriver

Returns:

"JDBC"

getType

public java.lang.String getType()

Enforced by I_Plugin

Specified by:

getType in interface I_Plugin

getVersion

public java.lang.String getVersion()

Enforced by I_Plugin

Specified by:

getVersion in interface I_Plugin

init

public void init(Global glob,
                 PluginInfo pluginInfo)

This method is called by the PluginManager (enforced by I_Plugin).

Specified by:

init in interface I_Plugin

See Also:

I_Plugin.init(org.xmlBlaster.util.Global,org.xmlBlaster.util.plugin.PluginInfo)

getRawAddress

public java.lang.String getRawAddress()

Get the address how to access this driver.

Specified by:

getRawAddress in interface I_CallbackDriver

Returns:

null

init

public void init(Global glob,
                 CallbackAddress callbackAddress)
          throws XmlBlasterException

Get callback reference here.

This method is enforced by interface I_CallbackDriver and is called by xmlBlaster after instantiation of this class, telling us the address to callback.

Specified by:

init in interface I_CallbackDriver

Parameters:

callbackAddress - Contains the stringified jdbc callback handle of the client

Throws:

XmlBlasterException

sendUpdate

public final java.lang.String[] sendUpdate(MsgUnitRaw[] msgArr)
                                    throws XmlBlasterException

This sends the SQL query to the JDBC service for processing.

This method is enforced by interface I_CallbackDriver and is called by xmlBlaster

Specified by:

sendUpdate in interface I_CallbackDriver

Parameters:

msgArr - Array of all messages to send, is guaranteed to never be null

Returns:

Clients should return a qos as follows. An empty qos string "" is valid as well and interpreted as OK

  <qos>
     <state id='OK'/>  <!-- Client processing state OK | ERROR ... see Constants.java -->
  </qos>
 

Throws:

e.id="CallbackFailed", - should be caught and handled appropriate

XmlBlasterException

sendUpdateOneway

public void sendUpdateOneway(MsgUnitRaw[] msgArr)
                      throws XmlBlasterException

The oneway variant, without return value.

Specified by:

sendUpdateOneway in interface I_CallbackDriver

Parameters:

msgArr - Array of all messages to send, is guaranteed to never be null

Throws:

XmlBlasterException - Is never from the client (oneway).

ping

public final java.lang.String ping(java.lang.String qos)
                            throws XmlBlasterException

Ping to check if callback server is alive.

Specified by:

ping in interface I_CallbackDriver

Parameters:

qos - Currently not looked at, please pass an empty string ""

Returns:

"<qos><state id='OK'/></qos>"

Throws:

XmlBlasterException

See Also:

I_CallbackDriver.ping(String)

registerProgressListener

public I_ProgressListener registerProgressListener(I_ProgressListener listener)

Description copied from interface: I_CallbackDriver

Register a listener for to receive information about the progress of incoming data. Only one listener is supported, the last call overwrites older calls.

Specified by:

registerProgressListener in interface I_CallbackDriver

Parameters:

listener - Your listener, pass 0 to unregister.

Returns:

The previously registered listener or 0

shutdown

public void shutdown()

This method shuts down the driver.

Specified by:

shutdown in interface I_Plugin

isAlive

public boolean isAlive()

Specified by:

isAlive in interface I_CallbackDriver

Returns:

true if the plugin is still alive, false otherwise