ExprFunctionOp (Apache Jena ARQ)

java.lang.Object
- org.apache.jena.sparql.expr.ExprNode
- - org.apache.jena.sparql.expr.ExprFunction
  - - org.apache.jena.sparql.expr.ExprFunctionOp

All Implemented Interfaces:

Expr

Direct Known Subclasses:

E_Exists, E_NotExists
```
public abstract class ExprFunctionOp
extends ExprFunction
```
A "function" that executes over a pattern

Field Summary
- Fields inherited from interface org.apache.jena.sparql.expr.Expr
  CMP_EQUAL, CMP_GREATER, CMP_INDETERMINATE, CMP_LESS, CMP_UNEQUAL, NONE

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`Expr`	`apply(ExprTransform transform, ExprList args, Op x)`
`abstract ExprFunctionOp`	`copy(ExprList args, Op x)`
`abstract ExprFunctionOp`	`copy(ExprList args, Element elPattern)`
`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 org.apache.jena.sparql.expr.ExprFunction
equals, getArgs, getFunction, getFunctionIRI, getFunctionName, getFunctionPrintName, getFunctionSymbol, getOpName, hashCode, isFunction

Methods inherited from class org.apache.jena.sparql.expr.ExprNode
applyNodeTransform, asVar, copySubstitute, deepCopy, equals, equalsBySyntax, getConstant, getExpr, getExprVar, getVarName, getVarsMentioned, isConstant, isExpr, isSatisfied, isVariable, toString

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)

copy

public abstract ExprFunctionOp copy(ExprList args,
                                    Element elPattern)

visit

public void visit(ExprVisitor visitor)

apply

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