dcf.server
Interface Task

All Known Implementing Classes:

RandomizerTask, HTMLCrawlerTask, SimpleTask

public interface Task

A General task interface should be implemented by all task objects

Author:

Tal Salmona

Method Summary

void	addResult(java.lang.Object obj)
void	divide() Divide the task into parts - if the data is a List it is already divided.
java.util.Vector	generate() If this is a circular task it should generate a vector of new tasks
java.lang.Object	getData()
dcf.server.String	getName()
java.lang.Object	getResults()
int	getSize()
boolean	hasMore()
boolean	isCircular() The Distributer will call this method when a Task is returned by the client. If the task is circualr the client will call the generate() method to create additinal tasks.
java.lang.Object	next()
void	processResults() Called by Distributer when a task is returned.
void	setData(java.lang.Object obj)
void	setName(dcf.server.String str) Sets the display name for the task - This is used by the server to index tasks.
void	setParent(Worker w) Sets the parent for this task.

Method Detail

setData

public void setData(java.lang.Object obj)

Parameters:

obj - Most commonly a Vector of data to be processed.

getData

public java.lang.Object getData()

divide

public void divide()

Divide the task into parts - if the data is a List it is already divided.

hasMore

public boolean hasMore()

next

public java.lang.Object next()

getSize

public int getSize()

addResult

public void addResult(java.lang.Object obj)

Parameters:

obj - An Object to add to the results.

getResults

public java.lang.Object getResults()

setName

public void setName(dcf.server.String str)

Sets the display name for the task - This is used by the server to index tasks.

Parameters:

str - The name for this task.

getName

public dcf.server.String getName()

isCircular

public boolean isCircular()

The Distributer will call this method when a Task is returned by the client.
If the task is circualr the client will call the generate() method to create additinal tasks.

Returns:

true - If the task should create new tasks. false - If the task ends when returned.

generate

public java.util.Vector generate()

If this is a circular task it should generate a vector of new tasks

Returns:

A Vector of new Tasks.

processResults

public void processResults()

Called by Distributer when a task is returned.

setParent

public void setParent(Worker w)

Sets the parent for this task.

Parameters:

w - The active Worker for this task.