Package org.apache.xpath.functions
Class FuncSubstring
- All Implemented Interfaces:
Serializable
,SourceLocator
,ExpressionNode
,ExpressionOwner
,XPathVisitable
Execute the Substring() function.
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
checkNumberArgs
(int argNum) Check that the number of arguments passed to this function is correct.execute
(XPathContext xctxt) Execute the function.Methods inherited from class org.apache.xpath.functions.Function3Args
callArgVisitors, canTraverseOutsideSubtree, deepEquals, fixupVariables, getArg2, setArg
Methods inherited from class org.apache.xpath.functions.Function2Args
getArg1
Methods inherited from class org.apache.xpath.functions.FunctionOneArg
getArg0, getExpression, setExpression
Methods inherited from class org.apache.xpath.functions.Function
callVisitors, postCompileStep
Methods inherited from class org.apache.xpath.Expression
asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr
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Constructor Details
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FuncSubstring
public FuncSubstring()
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Method Details
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execute
Execute the function. The function must return a valid object.- Overrides:
execute
in classFunction
- Parameters:
xctxt
- The current execution context.- Returns:
- A valid XObject.
- Throws:
TransformerException
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checkNumberArgs
Check that the number of arguments passed to this function is correct.- Overrides:
checkNumberArgs
in classFunction3Args
- Parameters:
argNum
- The number of arguments that is being passed to the function.- Throws:
WrongNumberArgsException
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