com.bigdata.striterator

Class Filter<I extends Iterator<E>,E>

java.lang.Object

com.bigdata.striterator.Filter<I,E>

Type Parameters:

I - The generic type of the iterator.

E - The generic type of the elements visited by the iterator.

All Implemented Interfaces:

IFilter<I,E,E>, Serializable

public abstract class Filter<I extends Iterator<E>,E>
extends Object
implements IFilter<I,E,E>

Element-at-a-time filter with generics.

Version:

$Id$

Author:

Bryan Thompson

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Object	state

Constructor Summary

Constructors

Constructor and Description
Filter()
Filter(int chunkSize, Object state)
Filter(Object state)

Method Summary

Methods

Modifier and Type	Method and Description
IChunkedIterator<E>	filter(I src) Wrap the source iterator with an iterator that applies this filter.
protected abstract boolean	isValid(E e) Return true iff the element should be visited.

Methods inherited from class java.lang.Object

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

Field Detail

state

protected Object state

Constructor Detail

Filter

public Filter()

Filter

public Filter(Object state)

Filter

public Filter(int chunkSize,
      Object state)

Method Detail

filter

public IChunkedIterator<E> filter(I src)

Description copied from interface: IFilter

Wrap the source iterator with an iterator that applies this filter.

Specified by:

filter in interface IFilter<I extends Iterator<E>,E,E>

Parameters:

src - The source iterator.

Returns:

The filtered iterator.

isValid

protected abstract boolean isValid(E e)

Return true iff the element should be visited.

Parameters:

e - The element.