FoldLeftFn.FoldLeftFold

java.lang.Object
- net.sf.saxon.functions.hof.FoldLeftFn.FoldLeftFold

All Implemented Interfaces:: Fold

Enclosing class:: FoldLeftFn

public class FoldLeftFn.FoldLeftFold
extends java.lang.Object
implements Fold

Constructor Summary

Constructors
Constructor Description

FoldLeftFold(XPathContext context, GroundedValue zero, Function function)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isFinished()`	Ask whether the computation has completed.
`void`	`processItem(Item item)`	Process one item in the input sequence, returning a new copy of the working data
`Sequence`	`result()`	Compute the final result of the function, when all the input has been processed

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FoldLeftFold
```
public FoldLeftFold(XPathContext context,
                    GroundedValue zero,
                    Function function)
```
- Method Detail
  - processItem
```
public void processItem(Item item)
                 throws XPathException
```
    Description copied from interface: Fold
    
    Process one item in the input sequence, returning a new copy of the working data
    
    Specified by:
    
    processItem in interface Fold
    
    Parameters:
    
    item - the item to be processed from the input sequence
    
    Throws:
    
    XPathException - if a dynamic error occurs
  - isFinished
```
public boolean isFinished()
```
    Description copied from interface: Fold
    
    Ask whether the computation has completed. A function that can deliver its final result without reading the whole input should return true; this will be followed by a call on result() to deliver the final result.
    
    Specified by:
    
    isFinished in interface Fold
    
    Returns:
    
    true if the result of the function is now available even though not all items in the sequence have been processed
  - result
```
public Sequence result()
```
    Description copied from interface: Fold
    
    Compute the final result of the function, when all the input has been processed
    
    Specified by:
    
    result in interface Fold
    
    Returns:
    
    the result of the function