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java.lang.Object
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+--net.sf.saxon.expr.ComputedExpression
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+--net.sf.saxon.expr.FunctionCall
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+--net.sf.saxon.functions.SystemFunction
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+--net.sf.saxon.functions.CompileTimeFunction
Abtract class representing a function call that is always rewritten at compile-time: it can never be executed
| Field Summary |
| Fields inherited from class net.sf.saxon.functions.SystemFunction |
operation |
| Fields inherited from class net.sf.saxon.expr.FunctionCall |
argument |
| Fields inherited from class net.sf.saxon.expr.ComputedExpression |
locationId, staticProperties |
| Fields inherited from interface net.sf.saxon.expr.Expression |
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
| Constructor Summary | |
CompileTimeFunction()
|
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| Method Summary | |
Item |
evaluateItem(XPathContext c)
Evaluate as a single item |
SequenceIterator |
iterate(XPathContext c)
Iterate over the results of the function |
Expression |
preEvaluate(StaticContext env)
preEvaluate: this method suppresses compile-time evaluation by doing nothing. |
| Methods inherited from class net.sf.saxon.functions.SystemFunction |
addContextDocumentArgument, checkArguments, computeCardinality, display, getDetails, getItemType, getRequiredType, main, makeSystemFunction, setDetails, useContextItemAsDefault |
| Methods inherited from class net.sf.saxon.expr.FunctionCall |
analyze, checkArgumentCount, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, promote, setArguments, setFunctionNameCode, simplify, simplifyArguments |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public CompileTimeFunction()
| Method Detail |
public Expression preEvaluate(StaticContext env)
throws XPathException
preEvaluate in class FunctionCallXPathException
public final Item evaluateItem(XPathContext c)
throws XPathException
evaluateItem in interface ExpressionevaluateItem in class ComputedExpressionc - The context in which the expression is to be evaluated
XPathException - if any dynamic error occurs evaluating the
expression
public final SequenceIterator iterate(XPathContext c)
throws XPathException
iterate in interface Expressioniterate in class ComputedExpressionc - supplies the context for evaluation
XPathException - if any dynamic error occurs evaluating the
expression
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