net.sf.saxon.instruct
public final class LocalParam extends GeneralVariable
The xsl:param element in XSLT has mandatory attribute name and optional attribute select. It can also be specified as required="yes" or required="no".
This is used only for parameters to XSLT templates. For function calls, the caller of the function places supplied arguments onto the callee's stackframe and the callee does not need to do anything. Global parameters (XQuery external variables) are handled using GlobalParam.
The LocalParam class is also used to represent parameters with the saxon:iterate instruction
Method Summary | |
---|---|
ValueRepresentation | evaluateVariable(XPathContext c)
Evaluate the variable |
void | explain(ExpressionPresenter out)
Diagnostic print of expression structure. |
int | getInstructionNameCode()
Get the name of this instruction for diagnostic and tracing purposes |
int | getParameterId()
Get the parameter id, which is essentially an alias for the parameter name,
unique within a stylesheet |
Iterator<Expression> | iterateSubExpressions()
Get all the XPath expressions associated with this instruction
(in XSLT terms, the expression present on attributes of the instruction,
as distinct from the child instructions in a sequence construction) |
TailCall | processLeavingTail(XPathContext context)
Process the local parameter declaration |
boolean | replaceSubExpression(Expression original, Expression replacement)
Replace one subexpression by a replacement subexpression |
void | setConversion(Expression convertor)
Define a conversion that is to be applied to the supplied parameter value. |
void | setParameterId(int id)
Allocate a number which is essentially an alias for the parameter name,
unique within a stylesheet |
Returns: the parameter id
Parameters: original the original subexpression replacement the replacement subexpression
Returns: true if the original subexpression is found
Parameters: convertor The expression to be applied. This performs type checking, and the basic conversions implied by function calling rules, for example numeric promotion, atomization, and conversion of untyped atomic values to a required type. The conversion uses the actual parameter value as input, referencing it using a VariableReference.
Parameters: id the parameter id