java.lang.Object
- net.sf.saxon.expr.PositionVariable

All Implemented Interfaces:

Binding
```
public class PositionVariable
extends java.lang.Object
implements Binding
```
Represents the defining occurrence of the position variable in a for expression within an expression, for example the $p in "for $x at $p in ...".

Constructor Summary

Constructors
Constructor Description

PositionVariable()
Create a RangeVariable

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ValueRepresentation`	`evaluateVariable(XPathContext context)`	Get the value of the range variable
`int`	`getLocalSlotNumber()`	If this is a local variable held on the local stack frame, return the corresponding slot number.
`SequenceType`	`getRequiredType()`	Get the required type (declared type) of the variable
`StructuredQName`	`getVariableQName()`	Get the name of the variable, as a namepool name code
`boolean`	`isAssignable()`	Test whether it is permitted to assign to the variable using the saxon:assign extension element.
`boolean`	`isGlobal()`	Indicate whether the binding is local or global.
`void`	`setSlotNumber(int nr)`	Set the slot number for the range variable
`void`	`setVariableQName(StructuredQName variableName)`	Set the name of the variable

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PositionVariable
```
public PositionVariable()
```
    Create a RangeVariable
- Method Detail
  - getVariableQName
```
public StructuredQName getVariableQName()
```
    Get the name of the variable, as a namepool name code
    
    Specified by:
    
    getVariableQName in interface Binding
    
    Returns:
    
    the nameCode
  - getRequiredType
```
public SequenceType getRequiredType()
```
    Get the required type (declared type) of the variable
    
    Specified by:
    
    getRequiredType in interface Binding
    
    Returns:
    
    the required type
  - setVariableQName
```
public void setVariableQName(StructuredQName variableName)
```
    Set the name of the variable
    
    Parameters:
    
    variableName - the name of the variable
  - setSlotNumber
```
public void setSlotNumber(int nr)
```
    Set the slot number for the range variable
    
    Parameters:
    
    nr - the slot number to be used
  - getLocalSlotNumber
```
public int getLocalSlotNumber()
```
    If this is a local variable held on the local stack frame, return the corresponding slot number. In other cases, return -1.
    
    Specified by:
    
    getLocalSlotNumber in interface Binding
    
    Returns:
    
    the slot number on the local stack frame
  - evaluateVariable
```
public ValueRepresentation evaluateVariable(XPathContext context)
                                     throws XPathException
```
    Get the value of the range variable
    
    Specified by:
    
    evaluateVariable in interface Binding
    
    Parameters:
    
    context - the XPath dynamic evaluation context
    
    Returns:
    
    the result of evaluating the variable
    
    Throws:
    
    XPathException
  - isAssignable
```
public boolean isAssignable()
```
    Test whether it is permitted to assign to the variable using the saxon:assign extension element. This will only be for an XSLT global variable where the extra attribute saxon:assignable="yes" is present.
    
    Specified by:
    
    isAssignable in interface Binding
    
    Returns:
    
    true if the binding is assignable
  - isGlobal
```
public boolean isGlobal()
```
    Indicate whether the binding is local or global. A global binding is one that has a fixed value for the life of a query or transformation; any other binding is local.
    
    Specified by:
    
    isGlobal in interface Binding
    
    Returns:
    
    true if the binding is global

Class PositionVariable

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

PositionVariable

Method Detail

getVariableQName

getRequiredType

setVariableQName

setSlotNumber

getLocalSlotNumber

evaluateVariable

isAssignable

isGlobal