com.saxonica.expr

Class HofParserExtension.TemporaryXSLTVariableBinding

java.lang.Object

com.saxonica.expr.HofParserExtension.TemporaryXSLTVariableBinding

All Implemented Interfaces:

Binding, LocalBinding

Enclosing class:

HofParserExtension

public static class HofParserExtension.TemporaryXSLTVariableBinding
extends java.lang.Object
implements LocalBinding

Constructor Summary

Constructors

Constructor and Description
TemporaryXSLTVariableBinding(SourceBinding decl)

Method Summary

Modifier and Type	Method and Description
void	addReference(VariableReference ref, boolean isLoopingReference) Register a variable reference that refers to the variable bound in this expression
Sequence	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() Return the slot number of the variable held on the local stack frame
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.
boolean	isIndexedVariable() Ask whether the binding is to be indexed
void	setIndexedVariable() Say that the bound value has the potential to be indexed

Methods inherited from class java.lang.Object

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

Constructor Detail

TemporaryXSLTVariableBinding

public TemporaryXSLTVariableBinding(SourceBinding 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 Sequence 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: LocalBinding

Return the slot number of the variable held on the local stack frame

Specified by:

getLocalSlotNumber in interface LocalBinding

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(VariableReference ref,
                         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:

ref - the variable reference

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

setIndexedVariable

public void setIndexedVariable()

Description copied from interface: LocalBinding

Say that the bound value has the potential to be indexed

Specified by:

setIndexedVariable in interface LocalBinding

isIndexedVariable

public boolean isIndexedVariable()

Description copied from interface: LocalBinding

Ask whether the binding is to be indexed

Specified by:

isIndexedVariable in interface LocalBinding

Returns:

true if the variable value can be indexed