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Revision as of 14:49, 12 January 2011
EclipseLink JPA
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Key API
@Convert Annotation and <convert> XML
The @Convert annotation specifies that a named converter should be used with the corresponding mapped attribute.
@Target({METHOD, FIELD}) @Retention(RUNTIME) public @interface Convert { String value() default "none"; }
The @Convert has the following reserved names:
- serialized – places the org.eclipse.persistence.mappings.converters.SerializedObjectConverter on the associated mapping.
- none – does not place a converter on the associated mapping.
Attribute | Description | Default | Required? |
---|---|---|---|
value | The String name for your converter. | "none" String | No |
This example shows how to use the @Convert annotation to define the Employee field gender.
Usage of the @Convert Annotation
@Entity @Table(name="EMPLOYEE") @Converter( name="genderConverter", converterClass=org.myorg.converters.GenderConverter.class ) public class Employee implements Serializable{ ... @Basic @Convert("genderConverter") public String getGender() { return gender; } ... }