org.apache.xpath.functions

Class FuncSum

Implemented Interfaces:
ExpressionNode, ExpressionOwner, java.io.Serializable, SourceLocator, XPathVisitable

public class FuncSum
extends FunctionOneArg

Execute the Sum() function.

See Also:
Serialized Form

Method Summary

XObject
execute(XPathContext xctxt)
Execute the function.

Methods inherited from class org.apache.xpath.functions.FunctionOneArg

callArgVisitors, canTraverseOutsideSubtree, checkNumberArgs, deepEquals, fixupVariables, getArg0, getExpression, setArg, setExpression

Methods inherited from class org.apache.xpath.functions.Function

callArgVisitors, callVisitors, checkNumberArgs, deepEquals, execute, postCompileStep, setArg

Methods inherited from class org.apache.xpath.Expression

asIterator, asIteratorRaw, asNode, assertion, bool, canTraverseOutsideSubtree, deepEquals, error, execute, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, fixupVariables, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr

Method Details

execute

public XObject execute(XPathContext xctxt)
            throws TransformerException
Execute the function. The function must return a valid object.
Overrides:
execute in interface Function

Parameters:
xctxt - The current execution context.

Returns:
A valid XObject.

Throws:
TransformerException -


Copyright B) 2004 Apache XML Project. All Rights Reserved.