Package org.aksw.commons.util.algebra

Class GenericFactorizer<E,V>

java.lang.Object

org.aksw.commons.util.algebra.GenericFactorizer<E,V>

Type Parameters:

V - The type of variables.

E - The type of expressions.

public class GenericFactorizer<E,V>
extends Object

Generic class for factorization of common sub expressions. Main application is to abstract factorization of Jena's Op and Expr hierarchy.

Field Summary

Fields

Modifier and Type	Field	Description
protected ExprOps<E,V>	exprOps
protected ExprFilter<E>	isBlocker	Predicate which can be used to stop descend down the expression tree

Constructor Summary

Constructors

Constructor	Description
GenericFactorizer(ExprOps<E,V> exprOps, ExprFilter<E> isBlocker)

Method Summary

Modifier and Type	Method	Description
E	factorize(E parent, int childIdx, E child, com.google.common.collect.BiMap<V,E> cxt, Supplier<V> nextVar)
E	factorize(E expr, com.google.common.collect.BiMap<V,E> varCxt, Supplier<V> nextVar)
ExprOps<E,V>	getExprOps()
ExprFilter<E>	getIsBlocker()

Methods inherited from class java.lang.Object

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

Field Details

exprOps

protected ExprOps<E,V> exprOps

isBlocker

protected ExprFilter<E> isBlocker

Predicate which can be used to stop descend down the expression tree

Constructor Details

GenericFactorizer

public GenericFactorizer(ExprOps<E,V> exprOps,
 ExprFilter<E> isBlocker)

Method Details

getExprOps

public ExprOps<E,V> getExprOps()

getIsBlocker

public ExprFilter<E> getIsBlocker()

factorize

public E factorize(E expr,
 com.google.common.collect.BiMap<V,E> varCxt,
 Supplier<V> nextVar)

factorize

public E factorize(E parent,
 int childIdx,
 E child,
 com.google.common.collect.BiMap<V,E> cxt,
 Supplier<V> nextVar)