javax.persistence.MapsId Java Examples

/**
 * Adds a @MapsId annotation to the specified annotationList if the specified element has the
 * maps-id attribute set. This should only be the case for many-to-one or one-to-one
 * associations.
 */
private void getMapsId(List<Annotation> annotationList, Element element) {
	String attrVal = element.attributeValue( "maps-id" );
	if ( attrVal != null ) {
		AnnotationDescriptor ad = new AnnotationDescriptor( MapsId.class );
		ad.setValue( "value", attrVal );
		annotationList.add( AnnotationFactory.create( ad ) );
	}
}
 

@Override
public void addPropertyAnnotatedWithMapsId(XClass entityType, PropertyData property) {
	if ( propertiesAnnotatedWithMapsId == null ) {
		propertiesAnnotatedWithMapsId = new HashMap<>();
	}

	Map<String, PropertyData> map = propertiesAnnotatedWithMapsId.get( entityType );
	if ( map == null ) {
		map = new HashMap<>();
		propertiesAnnotatedWithMapsId.put( entityType, map );
	}
	map.put( property.getProperty().getAnnotation( MapsId.class ).value(), property );
}
 

private static int addProperty(
		PropertyContainer propertyContainer,
		XProperty property,
		List<PropertyData> inFlightPropertyDataList,
		MetadataBuildingContext context) {
	// see if inFlightPropertyDataList already contains a PropertyData for this name,
	// and if so, skip it..
	for ( PropertyData propertyData : inFlightPropertyDataList ) {
		if ( propertyData.getPropertyName().equals( property.getName() ) ) {
			// EARLY EXIT!!!
			return 0;
		}
	}

	final XClass declaringClass = propertyContainer.getDeclaringClass();
	final XClass entity = propertyContainer.getEntityAtStake();
	int idPropertyCounter = 0;
	PropertyData propertyAnnotatedElement = new PropertyInferredData(
			declaringClass,
			property,
			propertyContainer.getClassLevelAccessType().getType(),
			context.getBootstrapContext().getReflectionManager()
	);

	/*
	 * put element annotated by @Id in front
	 * since it has to be parsed before any association by Hibernate
	 */
	final XAnnotatedElement element = propertyAnnotatedElement.getProperty();
	if ( element.isAnnotationPresent( Id.class ) || element.isAnnotationPresent( EmbeddedId.class ) ) {
		inFlightPropertyDataList.add( 0, propertyAnnotatedElement );
		/**
		 * The property must be put in hibernate.properties as it's a system wide property. Fixable?
		 * TODO support true/false/default on the property instead of present / not present
		 * TODO is @Column mandatory?
		 * TODO add method support
		 */
		if ( context.getBuildingOptions().isSpecjProprietarySyntaxEnabled() ) {
			if ( element.isAnnotationPresent( Id.class ) && element.isAnnotationPresent( Column.class ) ) {
				String columnName = element.getAnnotation( Column.class ).name();
				for ( XProperty prop : declaringClass.getDeclaredProperties( AccessType.FIELD.getType() ) ) {
					if ( !prop.isAnnotationPresent( MapsId.class ) ) {
						/**
						 * The detection of a configured individual JoinColumn differs between Annotation
						 * and XML configuration processing.
						 */
						boolean isRequiredAnnotationPresent = false;
						JoinColumns groupAnnotation = prop.getAnnotation( JoinColumns.class );
						if ( (prop.isAnnotationPresent( JoinColumn.class )
								&& prop.getAnnotation( JoinColumn.class ).name().equals( columnName )) ) {
							isRequiredAnnotationPresent = true;
						}
						else if ( prop.isAnnotationPresent( JoinColumns.class ) ) {
							for ( JoinColumn columnAnnotation : groupAnnotation.value() ) {
								if ( columnName.equals( columnAnnotation.name() ) ) {
									isRequiredAnnotationPresent = true;
									break;
								}
							}
						}
						if ( isRequiredAnnotationPresent ) {
							//create a PropertyData fpr the specJ property holding the mapping
							PropertyData specJPropertyData = new PropertyInferredData(
									declaringClass,
									//same dec
									prop,
									// the actual @XToOne property
									propertyContainer.getClassLevelAccessType().getType(),
									//TODO we should get the right accessor but the same as id would do
									context.getBootstrapContext().getReflectionManager()
							);
							context.getMetadataCollector().addPropertyAnnotatedWithMapsIdSpecj(
									entity,
									specJPropertyData,
									element.toString()
							);
						}
					}
				}
			}
		}

		if ( element.isAnnotationPresent( ManyToOne.class ) || element.isAnnotationPresent( OneToOne.class ) ) {
			context.getMetadataCollector().addToOneAndIdProperty( entity, propertyAnnotatedElement );
		}
		idPropertyCounter++;
	}
	else {
		inFlightPropertyDataList.add( propertyAnnotatedElement );
	}
	if ( element.isAnnotationPresent( MapsId.class ) ) {
		context.getMetadataCollector().addPropertyAnnotatedWithMapsId( entity, propertyAnnotatedElement );
	}

	return idPropertyCounter;
}
 

@OneToOne(mappedBy = "awards")
@MapsId
@JoinColumn(name="race_id")  
public Race getRace() {
    return race;
}
 

@OneToOne(mappedBy = "ageGroups")
@MapsId
@JoinColumn(name="race_id")  
public Race getRace() {
    return race;
}
 

@JoinColumn(name = "ID2", nullable = false)
@ManyToOne
@MapsId(value = "id2")
public UseCase2 getId2() {
    return id2;
}