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Difference between revisions of "EclipseLink/UserGuide/JPA/Basic JPA Development/Mapping/Basic Mappings/Default Conversions and Converters/Convert"
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*[http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/mappings/converters/SerializedObjectConverter.html SerializedObjectConverter] | *[http://www.eclipse.org/eclipselink/api/latest/org/eclipse/persistence/mappings/converters/SerializedObjectConverter.html SerializedObjectConverter] | ||
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Revision as of 15:20, 2 May 2011
EclipseLink JPA
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Key API
@Convert Annotation
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 |
The following example shows how to use the @Convert annotation to define the Employee field gender.
Example: @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; } ... }