ContextSwitchingExpression

All Superinterfaces:

ContextOriginator

All Known Implementing Classes:

FilterExpression, ForEach, ForEachGroup, IterateInstr, MultithreadedForEach, SimpleStepExpression, SlashExpression
```
public interface ContextSwitchingExpression
extends ContextOriginator
```
Interface implemented by expressions that switch the context, for example A/B or A[B]

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Expression`	`getActionExpression()`	Get the subexpression that is evaluated in the new context
`Expression`	`getSelectExpression()`	Get the subexpression that sets the context item

- Method Detail
  - getSelectExpression
```
Expression getSelectExpression()
```
    Get the subexpression that sets the context item
    
    Returns:
    
    the subexpression that sets the context item, position, and size to each of its items in turn
  - getActionExpression
```
Expression getActionExpression()
```
    Get the subexpression that is evaluated in the new context
    
    Returns:
    
    the subexpression evaluated in the context set by the controlling expression