com.saxonica.extra
Class AnalyzeStringFunction

java.lang.Object
  net.sf.saxon.expr.Expression
      net.sf.saxon.expr.FunctionCall
          net.sf.saxon.functions.SystemFunction
              net.sf.saxon.functions.CompileTimeFunction
                  com.saxonica.extra.AnalyzeStringFunction

All Implemented Interfaces:

Serializable, SourceLocator, Container, EvaluableItem, SequenceIterable, InstructionInfoProvider

public class AnalyzeStringFunction
extends CompileTimeFunction

This class implements the extension function saxon:analyze-string(). This is a higher order function that provides functionality similar to the XSLT 2.0 xsl:analyze-string instruction, but it works also in XQuery. The first argument is the string to be analyzed; the second is a string containing the regex. The third argument is a function to be invoked once for each matching substring; the fourth argument is a function to be invoked once for each non-matching substring. The fifth optional argument is the regular expression flags.

See Also:

Serialized Form

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression

EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD

Constructor Summary

AnalyzeStringFunction()

Method Summary

Expression

simplify(StaticContext env) Simplify the function call.

Methods inherited from class net.sf.saxon.functions.CompileTimeFunction

evaluateItem, iterate, preEvaluate

Methods inherited from class net.sf.saxon.functions.SystemFunction

checkArguments, computeCardinality, computeSpecialProperties, display, getDetails, getErrorCodeForTypeErrors, getItemType, main, makeSystemFunction, optimize, setDetails

Methods inherited from class net.sf.saxon.expr.FunctionCall

getArguments, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, promote, replaceSubExpression, setArguments, setFunctionNameCode, typeCheck

Methods inherited from class net.sf.saxon.expr.Expression

adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, effectiveBooleanValue, evaluateAsString, getCardinality, getColumnNumber, getContainingProcedure, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, process, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AnalyzeStringFunction

public AnalyzeStringFunction()

Method Detail

simplify

public Expression simplify(StaticContext env)
                    throws XPathException

Description copied from class: FunctionCall

Simplify the function call. Default method is to simplify each of the supplied arguments and evaluate the function if all are now known.

Overrides:

simplify in class FunctionCall

Returns:

the simplified expression

Throws:

XPathException - if an error is discovered during expression rewriting