net.sf.saxon.functions
public class Error extends SystemFunction
Method Summary | |
---|---|
Item | evaluateItem(XPathContext context)
Evaluation of the expression always throws an error |
void | evaluatePendingUpdates(XPathContext context, PendingUpdateList pul)
Evaluate an updating expression, adding the results to a Pending Update List.
|
boolean | isVacuousExpression()
Determine whether this is a vacuous expression as defined in the XQuery update specification |
Expression | preEvaluate(ExpressionVisitor visitor)
preEvaluate: this method suppresses compile-time evaluation by doing nothing |
Parameters: context the XPath dynamic evaluation context pul the pending update list to which the results should be written
Returns: true if this expression is vacuous
Parameters: visitor an expression visitor