lbg.examples.hello
Class HelloGrid

java.lang.Object
  lbg.examples.hello.HelloGrid

All Implemented Interfaces:

GridApplication

public class HelloGrid
extends java.lang.Object
implements GridApplication

A 'Hello World' in 2 classes to test the grid. Returned data is the sentence "Hello Grid", along with the input data, "a la" ICMP Echo. In case of error, the exception is returned

Author:

Xavier Dalem

Constructor Summary

HelloGrid()

Method Summary

void	compute() Runs the Grid application.
byte[]	getResult() Gets computed results.
void	setInputData(GridData[] datas) Sets the Grid application's input data files.
void	setParameters(java.lang.Object[] parameters) Sets the Grid application's input parameters.
void	setPlaypen(java.lang.String playpen_dir) Sets the playpen directory of the Resource where the Grid application can write and read temporary files.
void	setSupplier(java.lang.String supplier_id) Sets the id of the Supplier Peer that controls the Resource running the Grid application

Methods inherited from class java.lang.Object

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

Constructor Detail

HelloGrid

public HelloGrid()

Method Detail

setParameters

public void setParameters(java.lang.Object[] parameters)

Description copied from interface: GridApplication

Sets the Grid application's input parameters.

Specified by:

setParameters in interface GridApplication

Parameters:

parameters - An array of parameters as Objects. Can be empty, but never null.

setSupplier

public void setSupplier(java.lang.String supplier_id)

Description copied from interface: GridApplication

Sets the id of the Supplier Peer that controls the Resource running the Grid application

Specified by:

setSupplier in interface GridApplication

Parameters:

supplier_id - Supplier Peer id

setPlaypen

public void setPlaypen(java.lang.String playpen_dir)

Description copied from interface: GridApplication

Sets the playpen directory of the Resource where the Grid application can write and read temporary files.

Specified by:

setPlaypen in interface GridApplication

Parameters:

playpen_dir - playpen directory

setInputData

public void setInputData(GridData[] datas)

Description copied from interface: GridApplication

Sets the Grid application's input data files.

Specified by:

setInputData in interface GridApplication

Parameters:

datas - All input datas

compute

public void compute()

Description copied from interface: GridApplication

Runs the Grid application. As this method cannot throw any exception, one should print his stack traces to stderr in case of error. They will be returned in the logs if the application completes (i.e. doesn't fail elsewhere).

Specified by:

compute in interface GridApplication

getResult

public byte[] getResult()

Description copied from interface: GridApplication

Gets computed results.

Note: if no results are produced, new byte[0] can be used as a legal value.

Specified by:

getResult in interface GridApplication

Returns:

computed results, or null if a transient error happened