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:

$Id$

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

Constructors

Constructor and Description
ElementFilter(IElementFilter<R> test)
ElementFilter(IFilterTest test)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isValid(ITuple<R> tuple)
static <R> IFilter	newInstance(IElementFilter<R> test) Helper method conditionally wraps the test.
static <R> IFilter	newInstance(IFilterTest test) Helper method conditionally wraps the test.
String	toString() Human readable representation of the filter chain.

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

filterOnce

Methods inherited from class cutthecrap.utils.striterators.FilterBase

addFilter, filter, getProperty, getRequiredProperty, setProperty

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)

ElementFilter

public ElementFilter(IFilterTest 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.

newInstance

public static <R> IFilter newInstance(IFilterTest 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>

toString

public String toString()

Human readable representation of the filter chain.

Extended to show a human readable representation of the test.

Overrides:

toString in class FilterBase