Package net.sf.saxon.expr
Interface Binding
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- All Known Implementing Classes:
Assign
,Assignation
,EagerLetExpression
,ForExpression
,GeneralVariable
,GlobalParam
,GlobalVariable
,JAXPVariable
,LetExpression
,LocalParam
,LocalVariable
,QuantifiedExpression
,SQLColumn.ColumnInstruction
,UserFunctionParameter
,Variable
,WithParam
public interface Binding
Binding is a interface used to represent the run-time properties and methods associated with a variable: specifically, a method to get the value of the variable.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description ValueRepresentation
evaluateVariable(XPathContext context)
Evaluate the variableint
getLocalSlotNumber()
If this is a local variable held on the local stack frame, return the corresponding slot number.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.
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Method Detail
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evaluateVariable
ValueRepresentation evaluateVariable(XPathContext context) throws XPathException
Evaluate the variable- Throws:
XPathException
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isGlobal
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.
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isAssignable
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.
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getLocalSlotNumber
int getLocalSlotNumber()
If this is a local variable held on the local stack frame, return the corresponding slot number. In other cases, return -1.
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