com.bigdata.relation.accesspath
Class ElementFilter<R>

java.lang.Object
  cutthecrap.utils.striterators.FilterBase
      com.bigdata.btree.filter.TupleFilter<R>
          com.bigdata.relation.accesspath.ElementFilter<R>

Type Parameters:

R - The generic type of the elements presented to the filter.

All Implemented Interfaces:

ITupleFilter<R>, IFilter, IPropertySet, Serializable, Cloneable

public class ElementFilter<R>
extends TupleFilter<R>

Align the predicate's IElementFilter constraint with ITupleFilter so that the IElementFilter can be evaluated close to the data by an ITupleIterator.

Version:

$Id: ElementFilter.java 3678 2010-09-29 15:48:34Z thompsonbry $

Author:

Bryan Thompson

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.bigdata.btree.filter.TupleFilter

TupleFilter.TupleFilterator<E>

Constructor Summary

ElementFilter(IElementFilter<R> test)

Method Summary

boolean	isValid(ITuple<R> tuple)
static <R> IFilter	newInstance(IElementFilter<R> test) Helper method conditionally wraps the test.

Methods inherited from class com.bigdata.btree.filter.TupleFilter

filterOnce

Methods inherited from class cutthecrap.utils.striterators.FilterBase

addFilter, filter, getProperty, getRequiredProperty, setProperty, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface cutthecrap.utils.striterators.IFilter

filter

Methods inherited from interface cutthecrap.utils.striterators.IPropertySet

getProperty

Constructor Detail

ElementFilter

public ElementFilter(IElementFilter<R> test)

Method Detail

newInstance

public static <R> IFilter newInstance(IElementFilter<R> test)

Helper method conditionally wraps the test.

Type Parameters:

R -

Parameters:

test - The test.

Returns:

The wrapper test -or- null iff the test is null.

isValid

public boolean isValid(ITuple<R> tuple)

Specified by:

isValid in class TupleFilter<R>