javax.persistence

## Annotation Type Converter

    @Target(value=TYPE)
     @Retention(value=RUNTIME)
    public @interface Converter

Specifies that the annotated class is a converter and defines its scope. A converter class must be annotated with the `Converter` annotation or defined in the object/relational mapping descriptor as a converter.

If the `autoApply` element is specified as `true`, the persistence provider must automatically apply the converter to all mapped attributes of the specified target type for all entities in the persistence unit except for attributes for which conversion is overridden by means of the `Convert` annotation (or XML equivalent).

In determining whether a converter is applicable to an attribute, the provider must treat primitive types and wrapper types as equivalent.

Note that Id attributes, version attributes, relationship attributes, and attributes explicitly annotated as `Enumerated` or `Temporal` (or designated as such via XML) will not be converted.

Note that if `autoApply` is `true`, the `Convert` annotation may be used to override or disable auto-apply conversion on a per-attribute basis.

If `autoApply` is `false`, only those attributes of the target type for which the `Convert` annotation (or corresponding XML element) has been specified will be converted.

If there is more than one converter defined for the same target type, the `Convert` annotation should be used to explicitly specify which converter to use.

See Also:
  `AttributeConverter`, `Convert`
Since:
  Java Persistence 2.1

### Optional Element Summary

Optional Elements
`boolean` `autoApply`

### Element Detail

#### autoApply

    public abstract boolean autoApply

Default:
  false