edu.iu.dsc.tws.tset.fn.impl

Class MapBasedSourceFunction<K,V>

java.lang.Object

edu.iu.dsc.tws.tset.fn.impl.MapBasedSourceFunction<K,V>

All Implemented Interfaces:

SourceFunc<Tuple<K,V>>, TFunction<Tuple<K,V>,Tuple<K,V>>, java.io.Serializable

public class MapBasedSourceFunction<K,V>
extends java.lang.Object
implements SourceFunc<Tuple<K,V>>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MapBasedSourceFunction(java.lang.String listName, java.lang.String mapName)

Method Summary

Modifier and Type	Method and Description
boolean	hasNext() Weather we have more data
Tuple<K,V>	next() Get the next value
void	prepare(TSetContext context) Prepare the function.

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.iu.dsc.tws.api.tset.fn.SourceFunc

close

Methods inherited from interface edu.iu.dsc.tws.api.tset.fn.TFunction

end

Constructor Detail

MapBasedSourceFunction

public MapBasedSourceFunction(java.lang.String listName,
                              java.lang.String mapName)

Method Detail

prepare

public void prepare(TSetContext context)

Description copied from interface: TFunction

Prepare the function. Use this context in case you need to add/get inputs

Specified by:

prepare in interface TFunction<Tuple<K,V>,Tuple<K,V>>

Parameters:

context - CONTEXT

hasNext

public boolean hasNext()

Description copied from interface: SourceFunc

Weather we have more data

Specified by:

hasNext in interface SourceFunc<Tuple<K,V>>

Returns:

true if there is more data to be read

next

public Tuple<K,V> next()

Description copied from interface: SourceFunc

Get the next value

Specified by:

next in interface SourceFunc<Tuple<K,V>>

Returns:

the next value