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java.lang.Object net.sf.saxon.expr.Expression net.sf.saxon.expr.FunctionCall net.sf.saxon.functions.SystemFunction net.sf.saxon.functions.Replace
public class Replace
This class implements the replace() function for replacing substrings that match a regular expression
Field Summary |
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Fields inherited from class net.sf.saxon.functions.SystemFunction |
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operation |
Fields inherited from class net.sf.saxon.expr.FunctionCall |
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argument |
Fields inherited from class net.sf.saxon.expr.Expression |
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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 | |
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Replace()
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Method Summary | |
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SequenceIterator |
call(SequenceIterator[] arguments,
XPathContext context)
Evaluate the expression |
static String |
checkReplacement(CharSequence rep)
Check the contents of the replacement string |
Item |
evaluateItem(XPathContext c)
Evaluate the function in a string context |
RegularExpression |
getCompiledRegularExpression()
Get the compiled regular expression if available, otherwise return null |
Expression |
optimize(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Perform optimisation of an expression and its subexpressions. |
Expression |
simplify(ExpressionVisitor visitor)
Simplify and validate. |
Methods inherited from class net.sf.saxon.functions.SystemFunction |
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addContextDocumentArgument, addDocToPathMap, checkArguments, computeCardinality, computeSpecialProperties, copy, equals, getDetails, getErrorCodeForTypeErrors, getImplementationMethod, getItemType, getOperation, getRequiredType, makeSystemFunction, setDetails, useContextItemAsDefault |
Methods inherited from class net.sf.saxon.expr.FunctionCall |
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addExternalFunctionCallToPathMap, checkArgumentCount, explain, getArguments, getDisplayName, getExpressionName, getFunctionName, getNumberOfArguments, hashCode, iterateSubExpressions, preEvaluate, promote, replaceSubExpression, setArguments, setFunctionName, simplifyArguments, toString, typeCheck |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface net.sf.saxon.expr.CallableExpression |
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getArguments |
Constructor Detail |
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public Replace()
Method Detail |
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public Expression simplify(ExpressionVisitor visitor) throws XPathException
simplify
in class FunctionCall
visitor
- an expression visitor
XPathException
- if an error is discovered during expression
rewritingpublic Expression optimize(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
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 class 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
XPathException
- if an error is discovered during this phase
(typically a type error)public RegularExpression getCompiledRegularExpression()
public Item evaluateItem(XPathContext c) throws XPathException
evaluateItem
in class Expression
c
- The context in which the expression is to be evaluated
XPathException
- if any dynamic error occurs evaluating the
expressionpublic SequenceIterator call(SequenceIterator[] arguments, XPathContext context) throws XPathException
call
in interface CallableExpression
arguments
- the values of the arguments, supplied as SequenceIteratorscontext
- the dynamic evaluation context
XPathException
- if a dynamic error occurs during the evaluation of the expressionpublic static String checkReplacement(CharSequence rep)
rep
- the replacement string
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