com.bigdata.rdf.spo

Class InGraphHashSetFilter<E extends ISPO>

java.lang.Object

com.bigdata.rdf.spo.SPOFilter<E>

com.bigdata.rdf.spo.InGraphHashSetFilter<E>

All Implemented Interfaces:

IElementFilter<E>, IFilterTest, Serializable

public final class InGraphHashSetFilter<E extends ISPO>
extends SPOFilter<E>

"IN" filter for the context position based on a native long hash set containing the acceptable graph identifiers. While evaluation of the access path will be ordered, the filter does not maintain evolving state so a hash set will likely beat a binary search.

Version:

$Id: InGraphHashSetFilter.java 3694 2010-09-30 14:54:59Z mrpersonick $

Author:

Bryan Thompson

See Also:

InGraphBinarySearchFilter, Serialized Form

Constructor Summary

Constructors

Constructor and Description
InGraphHashSetFilter(int initialCapacity, Iterable<IV> graphs)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isValid(Object o) True iff the argument is matched by the filter.
String	toString()

Methods inherited from class com.bigdata.rdf.spo.SPOFilter

canAccept

Methods inherited from class java.lang.Object

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

Constructor Detail

InGraphHashSetFilter

public InGraphHashSetFilter(int initialCapacity,
                    Iterable<IV> graphs)

Parameters:

graphs - The set of acceptable graph identifiers.

Method Detail

isValid

public boolean isValid(Object o)

Description copied from interface: IFilterTest

True iff the argument is matched by the filter.

Returns:

true iff that object is accepted by the filter.

toString

public String toString()

Overrides:

toString in class Object