com.saxonica.expr
Class XPath30Parser.TemporaryXSLTVariableBinding

java.lang.Object
  com.saxonica.expr.XPath30Parser.TemporaryXSLTVariableBinding

All Implemented Interfaces:

Binding

Enclosing class:

XPath30Parser

public static class XPath30Parser.TemporaryXSLTVariableBinding
extends Object
implements Binding

Constructor Summary

XPath30Parser.TemporaryXSLTVariableBinding(XSLVariableDeclaration decl)

Method Summary

void	addReference(boolean isLoopingReference) Register a variable reference that refers to the variable bound in this expression
ValueRepresentation	evaluateVariable(XPathContext context) Evaluate the variable
IntegerValue[]	getIntegerBoundsForVariable() If the variable is bound to an integer, get the minimum and maximum possible values.
int	getLocalSlotNumber() If this is a local variable held on the local stack frame, return the corresponding slot number.
SequenceType	getRequiredType() Get the declared type of the variable
StructuredQName	getVariableQName() Get the name of the variable
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.

Methods inherited from class java.lang.Object

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

Constructor Detail

XPath30Parser.TemporaryXSLTVariableBinding

public XPath30Parser.TemporaryXSLTVariableBinding(XSLVariableDeclaration decl)

Method Detail

getRequiredType

public SequenceType getRequiredType()

Description copied from interface: Binding

Get the declared type of the variable

Specified by:

getRequiredType in interface Binding

Returns:

the declared type

evaluateVariable

public ValueRepresentation evaluateVariable(XPathContext context)
                                     throws XPathException

Description copied from interface: Binding

Evaluate the variable

Specified by:

evaluateVariable in interface Binding

Parameters:

context - the XPath dynamic evaluation context

Returns:

the result of evaluating the variable

Throws:

XPathException - if an error occurs while evaluating the variable

isGlobal

public boolean isGlobal()

Description copied from interface: Binding

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

isAssignable

public boolean isAssignable()

Description copied from interface: Binding

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

getLocalSlotNumber

public int getLocalSlotNumber()

Description copied from interface: Binding

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

getVariableQName

public StructuredQName getVariableQName()

Description copied from interface: Binding

Get the name of the variable

Specified by:

getVariableQName in interface Binding

Returns:

the name of the variable, as a structured QName

addReference

public void addReference(boolean isLoopingReference)

Description copied from interface: Binding

Register a variable reference that refers to the variable bound in this expression

Specified by:

addReference in interface Binding

Parameters:

isLoopingReference - - true if the reference occurs within a loop, such as the predicate of a filter expression

getIntegerBoundsForVariable

public IntegerValue[] getIntegerBoundsForVariable()

Description copied from interface: Binding

If the variable is bound to an integer, get the minimum and maximum possible values. Return null if unknown or not applicable

Specified by:

getIntegerBoundsForVariable in interface Binding

Returns:

a pair of integers containing the minimum and maximum values for the integer value; or null if the value is not an integer or the range is unknown