WindowClausePush (saxon JavaDoc)

java.lang.Object
- net.sf.saxon.expr.flwor.TuplePush
- - net.sf.saxon.expr.flwor.WindowClausePush

```
public class WindowClausePush
extends TuplePush
```
Implement a sliding or tumbling window clause of a FLWOR expression in tuple-push mode. The entire window processing is activated once for each input tuple, and it generates one output tuple for each identified window.

Field Summary

Fields
Modifier and Type Field Description

(package private) java.util.List<WindowClause.Window> currentWindows

Constructor Summary

Constructors
Constructor Description

WindowClausePush(TuplePush destination, WindowClause windowClause)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Close the tuple stream, indicating that no more tuples will be supplied
`void`	`processTuple(XPathContext context)`	Notify the availability of the next tuple.

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

- Field Detail
  - currentWindows
```
java.util.List<WindowClause.Window> currentWindows
```
- Constructor Detail
  - WindowClausePush
```
public WindowClausePush(TuplePush destination,
                        WindowClause windowClause)
```
- Method Detail
  - processTuple
```
public void processTuple(XPathContext context)
                  throws XPathException
```
    Notify the availability of the next tuple. Before calling this method, the supplier of the tuples must set all the variables corresponding to the supplied tuple in the local stack frame associated with the context object
    
    Specified by:
    
    processTuple in class TuplePush
    
    Parameters:
    
    context - the dynamic evaluation context
    
    Throws:
    
    XPathException - if a dynamic error occurs
  - close
```
public void close()
           throws XPathException
```
    Close the tuple stream, indicating that no more tuples will be supplied
    
    Overrides:
    
    close in class TuplePush
    
    Throws:
    
    XPathException - if a dynamic error occurs