org.jppf.task.storage
Interface DataProvider

All Superinterfaces:

Serializable

All Known Implementing Classes:

ClientDataProvider, MemoryMapDataProvider

public interface DataProvider
extends Serializable

Instances of this class provide a way for tasks to share common data. The objective is to avoid data duplication through marshaling/unmarshaling of the data, which can cause crashes due to insufficient available memory in a node.

Author:

Laurent Cohen

Method Summary

Object	getValue(Object key) Get a value specified by its key.
void	setValue(Object key, Object value) Set a value specified by its key in the store.

Method Detail

getValue

Object getValue(Object key)
                throws Exception

Get a value specified by its key.

Parameters:

key - the key identifying the value to retrieve in the store.

Returns:

the value as an Object.

Throws:

Exception - if an error occured while retrieving the data.

setValue

void setValue(Object key,
              Object value)
              throws Exception

Set a value specified by its key in the store.

Parameters:

key - the key identifying the value to retrieve in the store.

value - the value to store, associated with the key.

Throws:

Exception - if an error occured setting the data.