ComponentHelper.VariableScope (formcycle: bom 8.5.6 API)

All Superinterfaces:

AutoCloseable

Enclosing class:

ComponentHelper
```
public static interface ComponentHelper.VariableScope
extends AutoCloseable
```
Represents a scoped EL variable. When closed, the original value of the variable is restored.

Since:

8.5.3

See Also:

ComponentHelper.addScopedVariable(FacesContext, String, Object)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`close()`	Restores the previous mapping of the variable.
`Object`	`getPreviousValue()`	Gets the previous value of the variable before it was overridden by this scope.
`boolean`	`isHadPreviousValue()`	Gets whether the variable existed before it was overridden by this scope.

- Method Detail
  - close
```
void close()
```
    Restores the previous mapping of the variable.
    
    Specified by:
    
    close in interface AutoCloseable
  - getPreviousValue
```
Object getPreviousValue()
```
    Gets the previous value of the variable before it was overridden by this scope. If the variable did not exist before, this method returns null.
    
    Returns:
    
    The previous value of the variable, or null if the variable did not exist before.
  - isHadPreviousValue
```
boolean isHadPreviousValue()
```
    Gets whether the variable existed before it was overridden by this scope.
    
    Returns:
    
    true if the variable existed before, or false if the variable did not exist before.