Discriminator

```
@Target(TYPE)
@Retention(RUNTIME)
public @interface Discriminator
```
Annotation for the discriminator of the class. Corresponds to the xml element "discriminator" of the "inheritance" element.

Since:

2.1

Version:

2.1

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`java.lang.String`	`column`	Name of the column for the discriminator
`Column[]`	`columns`	The column(s) making up the discriminator.
`java.lang.String`	`customStrategy`	Custom strategy to use for the discriminator.
`java.lang.String`	`indexed`	Whether the discriminator is indexed.
`DiscriminatorStrategy`	`strategy`	Strategy to use for the discriminator.
`java.lang.String`	`value`	The value for the discriminator for objects of this class when using "value-map" strategy.

- Element Detail
  - strategy
```
DiscriminatorStrategy strategy
```
    Strategy to use for the discriminator. The discriminator determines the class associated with a row in the datastore.
    
    Returns:
    
    the strategy to use for the discriminator
    
    Default:
    
    javax.jdo.annotations.DiscriminatorStrategy.UNSPECIFIED
- - customStrategy
```
java.lang.String customStrategy
```
    Custom strategy to use for the discriminator. If customStrategy is non-empty, then strategy must be UNSPECIFIED.
    
    Returns:
    
    the custom strategy
    
    Default:
    
    ""
- - indexed
```
java.lang.String indexed
```
    Whether the discriminator is indexed.
    
    Returns:
    
    whether the discriminator is indexed
    
    Default:
    
    ""
- - column
```
java.lang.String column
```
    Name of the column for the discriminator
    
    Returns:
    
    the name of the column for the discriminator
    
    Default:
    
    ""
- - value
```
java.lang.String value
```
    The value for the discriminator for objects of this class when using "value-map" strategy.
    
    Returns:
    
    The value for the discriminator for objects of this class when using "value-map" strategy
    
    Default:
    
    ""
- - columns
```
Column[] columns
```
    The column(s) making up the discriminator.
    
    Returns:
    
    the column(s) making up the discriminator
    
    Default:
    
    {}