java.io.Serializable
, javax.xml.transform.SourceLocator
, Container
, Expression
, InstructionInfoProvider
public class Nilled extends SystemFunction
locationId, staticProperties
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD
argument
operation
Constructor | Description |
---|---|
Nilled() |
Modifier and Type | Method | Description |
---|---|---|
Item |
evaluateItem(XPathContext c) |
Evaluate the function
|
static BooleanValue |
getNilledProperty(NodeInfo node) |
Determine whether a node has the nilled property
|
static boolean |
isNilled(NodeInfo node) |
Determine whether a node is nilled.
|
adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, getCardinality, getColumnNumber, getConstructType, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, iterate, markTailFunctionCalls, process, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation, typeError
checkArgumentCount, getArguments, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, optimize, preEvaluate, promote, replaceSubExpression, setArguments, setFunctionNameCode, simplify, simplifyArguments, typeCheck
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
addContextDocumentArgument, checkArguments, computeCardinality, computeSpecialProperties, display, getDetails, getErrorCodeForTypeErrors, getItemType, getRequiredType, main, makeSystemFunction, setDetails, useContextItemAsDefault
public Item evaluateItem(XPathContext c) throws XPathException
evaluateItem
in interface Expression
evaluateItem
in class ComputedExpression
c
- The context in which the expression is to be evaluatedXPathException
- if any dynamic error occurs evaluating the
expressionpublic static BooleanValue getNilledProperty(NodeInfo node)
node
- the node in question (if null, the function returns null)public static boolean isNilled(NodeInfo node)