Persistent (Tentackle Session 2.2.0 API)

```
@Documented
@Inherited
@Retention(RUNTIME)
@Target({FIELD,METHOD,TYPE})
public @interface Persistent
```
Persistent fields and methods are annotated with this annotation.
Allows examining the model by reflection from within the persistence layer.

Author:

harald

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`java.lang.String`	`comment`	Optional comment.
`boolean`	`component`	Returns whether this is a component of the PDO. This is true for all members/attributes and composite relations.
`int`	`ordinal`	Gets the ordinal according to the model. Used to order the attributes and relations when analyzed via reflection.
`boolean`	`parent`	Returns whether this is the relation to the parent PDO. The parent PDO provides a composite relation to this PDO.

- Element Detail
  - comment
```
java.lang.String comment
```
    Optional comment.
    
    Returns:
    
    the comment
    
    Default:
    
    ""
- - component
```
boolean component
```
    Returns whether this is a component of the PDO.
    This is true for all members/attributes and composite relations. It is false for all non-composite relations.
    
    Returns:
    
    true if this is a component, false if a non-composite relation
    
    Default:
    
    true
- - parent
```
boolean parent
```
    Returns whether this is the relation to the parent PDO.
    The parent PDO provides a composite relation to this PDO.
    
    Returns:
    
    true if this is a component and the annotated relation points to the composite parent.
    
    Default:
    
    false
- - ordinal
```
int ordinal
```
    Gets the ordinal according to the model.
    Used to order the attributes and relations when analyzed via reflection.
    
    Returns:
    
    the ordinal, 0 if no ordinal available
    
    Default:
    
    0