net.sf.saxon.functions
Class Replace
- EvaluableItem, InstructionInfoProvider, SequenceIterable, Serializable, SourceLocator
This class implements the replace() function for replacing
substrings that match a regular expression
addContextDocumentArgument , addDocToPathMap , checkArguments , computeCardinality , computeSpecialProperties , copy , getDetails , getErrorCodeForTypeErrors , getItemType , getRequiredType , makeSystemFunction , optimize , setDetails , useContextItemAsDefault |
addExternalFunctionCallToPathMap , checkArgumentCount , checkArguments , equals , explain , getArguments , getDisplayName , getFunctionName , getNumberOfArguments , hashCode , iterateSubExpressions , optimize , preEvaluate , promote , replaceSubExpression , setArguments , setFunctionName , simplify , simplifyArguments , toString , typeCheck |
addToPathMap , adoptChildExpression , checkPermittedContents , computeCardinality , computeDependencies , computeSpecialProperties , computeStaticProperties , copy , display , doPromotion , dynamicError , effectiveBooleanValue , evaluateAsString , evaluateItem , explain , explain , findParentOf , getCardinality , getColumnNumber , getConstructType , getContainer , getDependencies , getExecutable , getHostLanguage , getImplementationMethod , getInstructionInfo , getIntrinsicDependencies , getItemType , getLineNumber , getLocationId , getLocationProvider , getPublicId , getSlotsUsed , getSpecialProperties , getSystemId , hasLoopingSubexpression , implementsStaticTypeCheck , iterate , iterateEvents , iterateSubExpressions , markTailFunctionCalls , optimize , process , promote , replaceSubExpression , resetLocalStaticProperties , setContainer , setFiltered , setFlattened , setLocationId , simplify , staticTypeCheck , suppressValidation , toString , typeCheck , typeError |
checkReplacement
public static String checkReplacement(CharSequence rep)
Check the contents of the replacement string
rep
- the replacement string
- null if the string is OK, or an error message if not
getCompiledRegularExpression
public RegularExpression getCompiledRegularExpression()
Get the compiled regular expression if available, otherwise return null
- the compiled regex, or null
optimize
public Expression optimize(ExpressionVisitor visitor,
ItemType contextItemType)
throws XPathException
Perform optimisation of an expression and its subexpressions.
This method is called after all references to functions and variables have been resolved
to the declaration of the function or variable, and after all type checking has been done.
- optimize in interface SystemFunction
visitor
- an expression visitorcontextItemType
- the static type of "." at the point where this expression is invoked.
The parameter is set to null if it is known statically that the context item will be undefined.
If the type of the context item is not known statically, the argument is set to
Type.ITEM_TYPE
- the original expression, rewritten if appropriate to optimize execution
XPathException
- if an error is discovered during this phase
(typically a type error)