com.bigdata.rdf.rules

Class FastClosure

java.lang.Object

com.bigdata.rdf.rules.BaseClosure

com.bigdata.rdf.rules.FastClosure

public class FastClosure
extends BaseClosure

Fast forward closure of the store based on "An approach to RDF(S) Query, Manipulation and Inference on Databases" by Lu, Yu, Tu, Lin, and Zhang.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields inherited from class com.bigdata.rdf.rules.BaseClosure

db, enableOwlFunctionalAndInverseFunctionalProperty, forwardChainOwlEquivalentClass, forwardChainOwlEquivalentProperty, forwardChainOwlHasValue, forwardChainOwlInverseOf, forwardChainOwlSameAsClosure, forwardChainOwlSameAsProperties, forwardChainOwlSymmetricProperty, forwardChainOwlTransitiveProperty, forwardChainRdfTypeRdfsResource, rdfsOnly, vocab

Constructor Summary

Constructors

Constructor and Description
FastClosure(AbstractTripleStore db)

Method Summary

Methods

Modifier and Type	Method and Description
MappedProgram	getProgram(String db, String focusStore) Return the program that will be used to compute the closure of the database.

Methods inherited from class com.bigdata.rdf.rules.BaseClosure

getCustomRules

Methods inherited from class java.lang.Object

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

Constructor Detail

FastClosure

public FastClosure(AbstractTripleStore db)

Method Detail

getProgram

public MappedProgram getProgram(String db,
                       String focusStore)

Description copied from class: BaseClosure

Return the program that will be used to compute the closure of the database.

Specified by:

getProgram in class BaseClosure

Parameters:

db - The database whose closure will be updated.

focusStore - When non-null, the focusStore will be closed against the database with the entailments written into the database. When null, the entire database will be closed (database-at-once closure).

Returns:

The program to be executed.