TuplePush

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

Direct Known Subclasses:

CountClausePush, ForClauseOuterPush, ForClausePush, GroupByClausePush, LetClausePush, OrderByClausePush, ReturnClausePush, TraceClausePush, WhereClausePush, WindowClausePush
```
public abstract class TuplePush
extends java.lang.Object
```
Abtract class representing a tuple stream (used to evaluate a FLWOR expression) in push mode (where the provider of tuples activates the consumer of those tuples)

Constructor Summary

Constructors
Modifier Constructor Description

protected TuplePush(Outputter outputter)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Close the tuple stream, indicating that no more tuples will be supplied
`protected Outputter`	`getOutputter()`
`abstract 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

- Constructor Detail
  - TuplePush
```
protected TuplePush(Outputter outputter)
```
- Method Detail
  - getOutputter
```
protected Outputter getOutputter()
```
  - processTuple
```
public abstract 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
    
    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
    
    Throws:
    
    XPathException - if a dynamic error occurs