net.sf.saxon.functions
Class FunctionName

java.lang.Object
  extended by net.sf.saxon.expr.Expression
      extended by net.sf.saxon.expr.FunctionCall
          extended by net.sf.saxon.functions.SystemFunction
              extended by net.sf.saxon.functions.FunctionName
All Implemented Interfaces:
Serializable, SourceLocator, LocationProvider, SaxonLocator, CallableExpression, InstructionInfo, Locator

public class FunctionName
extends SystemFunction
implements CallableExpression

This class implements the function function-name(), which is a standard function in XQuery 1.1

See Also:
Serialized Form

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.Expression
EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, WATCH_METHOD
 
Constructor Summary
FunctionName()
           
 
Method Summary
 SequenceIterator<AtomicValue> call(SequenceIterator[] arguments, XPathContext context)
          Evaluate the expression
 Item evaluateItem(XPathContext context)
          Evaluate this function call at run-time
 
Methods inherited from class net.sf.saxon.functions.SystemFunction
addContextDocumentArgument, addDocToPathMap, checkArguments, computeCardinality, computeSpecialProperties, copy, equals, getDetails, getErrorCodeForTypeErrors, getImplementationMethod, getItemType, getOperation, getRequiredType, makeSystemFunction, optimize, setDetails, useContextItemAsDefault
 
Methods inherited from class net.sf.saxon.expr.FunctionCall
addExternalFunctionCallToPathMap, checkArgumentCount, explain, getArguments, getDisplayName, getExpressionName, getFunctionName, getNumberOfArguments, hashCode, iterateSubExpressions, preEvaluate, promote, replaceSubExpression, setArguments, setFunctionName, simplify, simplifyArguments, toString, typeCheck
 
Methods inherited from class net.sf.saxon.expr.Expression
addToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, evaluatePendingUpdates, explain, getCardinality, getColumnNumber, getColumnNumber, getConstructType, getContainer, getDependencies, getEvaluationMethod, getExecutable, getHostLanguage, getIntegerBounds, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, getSystemId, hasLoopingSubexpression, hasVariableBinding, implementsStaticTypeCheck, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterate, iterateEvents, iterateSameFocusSubExpressions, markTailFunctionCalls, process, resetLocalStaticProperties, setContainer, setEvaluationMethod, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, typeError
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface net.sf.saxon.expr.CallableExpression
getArguments
 

Constructor Detail

FunctionName

public FunctionName()
Method Detail

evaluateItem

public Item evaluateItem(XPathContext context)
                  throws XPathException
Evaluate this function call at run-time

Overrides:
evaluateItem in class Expression
Parameters:
context - The XPath dynamic evaluation context
Returns:
the result of the function, or null to represent an empty sequence
Throws:
XPathException - if a dynamic error occurs during evaluation of the function.

call

public SequenceIterator<AtomicValue> call(SequenceIterator[] arguments,
                                          XPathContext context)
                                   throws XPathException
Evaluate the expression

Specified by:
call in interface CallableExpression
Parameters:
arguments - the values of the arguments, supplied as SequenceIterators
context - the dynamic evaluation context
Returns:
the result of the evaluation, in the form of a SequenceIterator
Throws:
XPathException - if a dynamic error occurs during the evaluation of the expression


Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.