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java.lang.Objectorg.jaxen.function.SumFunction
4.4 number sum(node-set)
The sum function returns the sum, for each node in the argument node-set, of the result of converting the string-values of the node to a number.
| Constructor Summary | |
SumFunction()
Create a new SumFunction object. |
|
| Method Summary | |
Object |
call(Context context,
List args)
Returns the sum of its arguments. |
static Double |
evaluate(Object obj,
Navigator nav)
Returns the sum of the items in a list. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public SumFunction()
SumFunction object.
| Method Detail |
public Object call(Context context,
List args)
throws FunctionCallException
call in interface Functioncontext - the context at the point in the
expression when the function is calledargs - a list that contains exactly one item, also a List
Double containing the sum of the items in args.get(0)
FunctionCallException - if args has more or less than one item;
or if the first argument is not a List
public static Double evaluate(Object obj,
Navigator nav)
throws FunctionCallException
Double
as if by the XPath number() function.
obj - a List of numbers to be summednav - ignored
FunctionCallException - if obj is not a List
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