com.hp.hpl.jena.sparql.algebra.optimize
Class ExprTransformConstantFold

java.lang.Object
  com.hp.hpl.jena.sparql.expr.ExprTransformCopy
      com.hp.hpl.jena.sparql.algebra.optimize.ExprTransformConstantFold

All Implemented Interfaces:

ExprTransform

public class ExprTransformConstantFold
extends ExprTransformCopy

An expression transform that simplifies expressions by constant folding wherever possible

Field Summary

Fields inherited from class com.hp.hpl.jena.sparql.expr.ExprTransformCopy

COPY_ALWAYS, COPY_ONLY_ON_CHANGE

Constructor Summary

ExprTransformConstantFold()

Method Summary

Expr	transform(ExprFunction1 func, Expr expr1)
Expr	transform(ExprFunction2 func, Expr expr1, Expr expr2)
Expr	transform(ExprFunction3 func, Expr expr1, Expr expr2, Expr expr3)
Expr	transform(ExprFunctionN func, ExprList args)
Expr	transform(ExprFunctionOp funcOp, ExprList args, Op opArg)

Methods inherited from class com.hp.hpl.jena.sparql.expr.ExprTransformCopy

transform, transform, transform, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprTransformConstantFold

public ExprTransformConstantFold()

Method Detail

transform

public Expr transform(ExprFunction1 func,
                      Expr expr1)

Specified by:

transform in interface ExprTransform

Overrides:

transform in class ExprTransformCopy

transform

public Expr transform(ExprFunction2 func,
                      Expr expr1,
                      Expr expr2)

Specified by:

transform in interface ExprTransform

Overrides:

transform in class ExprTransformCopy

transform

public Expr transform(ExprFunction3 func,
                      Expr expr1,
                      Expr expr2,
                      Expr expr3)

Specified by:

transform in interface ExprTransform

Overrides:

transform in class ExprTransformCopy

transform

public Expr transform(ExprFunctionN func,
                      ExprList args)

Specified by:

transform in interface ExprTransform

Overrides:

transform in class ExprTransformCopy

transform

public Expr transform(ExprFunctionOp funcOp,
                      ExprList args,
                      Op opArg)

Specified by:

transform in interface ExprTransform

Overrides:

transform in class ExprTransformCopy