com.hp.hpl.jena.sparql.expr
Class ExprFunctionOp

java.lang.Object
  com.hp.hpl.jena.sparql.expr.ExprNode
      com.hp.hpl.jena.sparql.expr.ExprFunction
          com.hp.hpl.jena.sparql.expr.ExprFunctionOp

All Implemented Interfaces:

Expr

Direct Known Subclasses:

E_Exists, E_NotExists, E_Scalar

public abstract class ExprFunctionOp
extends ExprFunction

A "function" that executes over a pattern

Field Summary

Fields inherited from interface com.hp.hpl.jena.sparql.expr.Expr

CMP_EQUAL, CMP_GREATER, CMP_INDETERMINATE, CMP_LESS, CMP_UNEQUAL

Method Summary

Expr	apply(ExprTransform transform, ExprList args, Op x)
abstract ExprFunctionOp	copy(ExprList args, Op x)
NodeValue	eval(Binding binding, FunctionEnv env) Evaluate this expression against the binding
Expr	getArg(int i)
Element	getElement()
Op	getGraphPattern()
boolean	isGraphPattern()
int	numArgs()
void	visit(ExprVisitor visitor)

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

equals, getArgs, getFunction, getFunctionIRI, getFunctionName, getFunctionPrintName, getFunctionSymbol, getOpName, hashCode, isFunction

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

applyNodeTransform, asVar, copySubstitute, copySubstitute, deepCopy, getConstant, getExpr, getExprVar, getVarName, getVarNamesMentioned, getVarsMentioned, isConstant, isExpr, isSatisfied, isVariable, toString, varNamesMentioned, varsMentioned

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

getArg

public Expr getArg(int i)

Specified by:

getArg in class ExprFunction

isGraphPattern

public boolean isGraphPattern()

Overrides:

isGraphPattern in class ExprNode

getGraphPattern

public Op getGraphPattern()

Overrides:

getGraphPattern in class ExprNode

getElement

public Element getElement()

numArgs

public int numArgs()

Specified by:

numArgs in class ExprFunction

eval

public final NodeValue eval(Binding binding,
                            FunctionEnv env)

Description copied from interface: Expr

Evaluate this expression against the binding

Specified by:

eval in interface Expr

Specified by:

eval in class ExprNode

copy

public abstract ExprFunctionOp copy(ExprList args,
                                    Op x)

visit

public void visit(ExprVisitor visitor)

apply

public Expr apply(ExprTransform transform,
                  ExprList args,
                  Op x)