net.sf.jameleon.data
Class CollectionDataDriver

java.lang.Object
  net.sf.jameleon.data.CollectionDataDriver

All Implemented Interfaces:

DataDriver

public class CollectionDataDriver
extends Object
implements DataDriver

This DataDriver is used to iterator over a Collection of Objects.

Author:

Andrey Chernyshov, Christian Hargraves

Field Summary

protected Collection	items
protected Iterator	iterator
protected String	key

Constructor Summary

CollectionDataDriver()
Creates a CollectionDataDriver You must call setKey() and setItems() in order for this DataDriver to work correctly

CollectionDataDriver(String key, Collection items)
Creates a CollectionDataDriver

Method Summary

void	close() Closes the handle to the data source
Map	getNextRow() Gets the next row from the data source
boolean	hasMoreRows() Tells whether the data source has another row
void	open() Opens the handle to the data source
void	setItems(Collection items)
void	setKey(String key)

Methods inherited from class java.lang.Object

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

Field Detail

items

protected Collection items

key

protected String key

iterator

protected Iterator iterator

Constructor Detail

CollectionDataDriver

public CollectionDataDriver()

Creates a CollectionDataDriver You must call setKey() and setItems() in order for this DataDriver to work correctly

CollectionDataDriver

public CollectionDataDriver(String key,
                            Collection items)

Creates a CollectionDataDriver

Parameters:

key - - the key to store the object in the collection as

items - - the collection of items to iterator over

Method Detail

setItems

public void setItems(Collection items)

setKey

public void setKey(String key)

open

public void open()
          throws IOException

Opens the handle to the data source

Specified by:

open in interface DataDriver

Throws:

IOException - when the data source can not be found.

close

public void close()

Closes the handle to the data source

Specified by:

close in interface DataDriver

getNextRow

public Map getNextRow()

Gets the next row from the data source

Specified by:

getNextRow in interface DataDriver

Returns:

a key-value HashMap representing the data row or null if no data row is available

hasMoreRows

public boolean hasMoreRows()

Tells whether the data source has another row

Specified by:

hasMoreRows in interface DataDriver

Returns:

true if the data source still has more rows