SessionParameter (Action Controller core 0.0.41-SNAPSHOT API)

```
@Retention(RUNTIME)
@Target(PARAMETER)
public @interface SessionParameter
```
Maps the parameter to the specified servlet session. If the session parameter is missing, aborts the request with 401 Unauthorized, unless the parameter type is Optional or createIfMissing is set. If the parameter type is Consumer, calling parameter.accept() sets the session attribute instead of returning it

See Also:

HttpParameterMapping

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`boolean`	`createIfMissing`	If true, the default constructor is used to create a new object if none exists
`boolean`	`invalidate`	If true and used with Consumer, calling `Consumer.accept(T)` will invalidate the current session and create a new one.
`String`	`value`	Defaults to the class name of the parameter (removing Consumer or Optional parts of the type)

- Element Detail
  - value
```
String value
```
    Defaults to the class name of the parameter (removing Consumer or Optional parts of the type)
    
    Default:
    
    ""
- - createIfMissing
```
boolean createIfMissing
```
    If true, the default constructor is used to create a new object if none exists
    
    Default:
    
    false
- - invalidate
```
boolean invalidate
```
    If true and used with Consumer, calling Consumer.accept(T) will invalidate the current session and create a new one. If true and set with createIfMissing, it will invalidate the session if it created a new one
    
    Default:
    
    false