com.bigdata.rdf.relation.rule

Class BindingSetSortKeyBuilder

java.lang.Object

com.bigdata.rdf.relation.rule.BindingSetSortKeyBuilder

All Implemented Interfaces:

ISortKeyBuilder<IBindingSet>

public class BindingSetSortKeyBuilder
extends Object
implements ISortKeyBuilder<IBindingSet>

Builds unsigned byte[] sort keys from IBindingSets.

Version:

$Id$

Author:

Bryan Thompson

Constructor Summary

Constructors

Constructor and Description
BindingSetSortKeyBuilder(IKeyBuilder keyBuilder, IVariable[] vars)

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getSortKey(IBindingSet bindingSet) Return an unsigned byte[] sort key.

Methods inherited from class java.lang.Object

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

Constructor Detail

BindingSetSortKeyBuilder

public BindingSetSortKeyBuilder(IKeyBuilder keyBuilder,
                        IVariable[] vars)

Parameters:

keyBuilder - Used to generate the unsigned byte[] key for each bound variable. In particular, the configuration for the IKeyBuilder governs how Unicode fields are handled.

vars - An array of IVariables, all of which MUST be bound.

Method Detail

getSortKey

public byte[] getSortKey(IBindingSet bindingSet)

Description copied from interface: ISortKeyBuilder

Return an unsigned byte[] sort key.

Specified by:

getSortKey in interface ISortKeyBuilder<IBindingSet>

Parameters:

bindingSet - Some object (required).

Returns:

The unsigned byte[] sort key.