ForSequenceMappingAction

java.lang.Object
- com.saxonica.ee.bytecode.map.ForSequenceMappingAction

All Implemented Interfaces:

MappingFunction
```
public abstract class ForSequenceMappingAction
extends java.lang.Object
implements MappingFunction
```
The ForSequenceMappingAction supports compilation of a ForExpression. It represents the action to be taken for each item in the source sequence. It acts as the MappingFunction for the mapping iterator. The map() method is generated in the subclass, and performs the "action" part of the for expression, being called once per iteration, and returning an iterator over the results.

Field Summary

Fields
Modifier and Type Field Description

protected XPathContext context

protected int position

Constructor Summary

Constructors
Constructor Description

ForSequenceMappingAction()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract SequenceIterator`	`map(Item item)`	Map one item to a sequence.
`void`	`setContext(XPathContext context)`

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

- Field Detail
  - context
```
protected XPathContext context
```
  - position
```
protected int position
```
- Constructor Detail
  - ForSequenceMappingAction
```
public ForSequenceMappingAction()
```
- Method Detail
  - setContext
```
public void setContext(XPathContext context)
```
  - map
```
public abstract SequenceIterator map(Item item)
                              throws XPathException
```
    Description copied from interface: MappingFunction
    
    Map one item to a sequence.
    
    Specified by:
    
    map in interface MappingFunction
    
    Parameters:
    
    item - The item to be mapped.
    
    Returns:
    
    one of the following: (a) a SequenceIterator over the sequence of items that the supplied input item maps to, or (b) null if it maps to an empty sequence.
    
    Throws:
    
    XPathException - if a dynamic error occurs