org.apache.xpath.functions
Class FuncSubstring
java.lang.Object
org.apache.xpath.Expression
org.apache.xpath.functions.Function
org.apache.xpath.functions.FunctionOneArg
org.apache.xpath.functions.Function2Args
org.apache.xpath.functions.Function3Args
org.apache.xpath.functions.FuncSubstring
- All Implemented Interfaces:
- Serializable, SourceLocator, ExpressionNode, ExpressionOwner, XPathVisitable
public class FuncSubstring
- extends Function3Args
Execute the Substring() function.
- See Also:
- Serialized Form
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 |
FuncSubstring
public FuncSubstring()
execute
public XObject execute(XPathContext xctxt)
throws TransformerException
- Execute the function. The function must return
a valid object.
- Overrides:
execute
in class Function
- Parameters:
xctxt
- The current execution context.
- Returns:
- A valid XObject.
- Throws:
TransformerException
checkNumberArgs
public void checkNumberArgs(int argNum)
throws WrongNumberArgsException
- Check that the number of arguments passed to this function is correct.
- Overrides:
checkNumberArgs
in class Function3Args
- Parameters:
argNum
- The number of arguments that is being passed to the function.
- Throws:
WrongNumberArgsException
Copyright ? 2005 Apache XML Project. All Rights Reserved.