javax.persistence.ManyToMany Java Examples

private static String getMappedByFromAnnotation(CtField persistentField) {

		OneToOne oto = PersistentAttributesHelper.getAnnotation( persistentField, OneToOne.class );
		if ( oto != null ) {
			return oto.mappedBy();
		}

		OneToMany otm = PersistentAttributesHelper.getAnnotation( persistentField, OneToMany.class );
		if ( otm != null ) {
			return otm.mappedBy();
		}

		// For @ManyToOne associations, mappedBy must come from the @OneToMany side of the association

		ManyToMany mtm = PersistentAttributesHelper.getAnnotation( persistentField, ManyToMany.class );
		return mtm == null ? "" : mtm.mappedBy();
	}
 

private String getMappedBy(MetaAttribute attr) {
	ManyToMany manyManyAnnotation = attr.getAnnotation(ManyToMany.class);
	OneToMany oneManyAnnotation = attr.getAnnotation(OneToMany.class);
	OneToOne oneOneAnnotation = attr.getAnnotation(OneToOne.class);
	String mappedBy = null;
	if (manyManyAnnotation != null) {
		mappedBy = manyManyAnnotation.mappedBy();
	}
	if (oneManyAnnotation != null) {
		mappedBy = oneManyAnnotation.mappedBy();
	}
	if (oneOneAnnotation != null) {
		mappedBy = oneOneAnnotation.mappedBy();
	}

	if (mappedBy != null && mappedBy.length() == 0) {
		mappedBy = null;
	}
	return mappedBy;
}
 

protected boolean isJpaLazy(Collection<Annotation> annotations, boolean isAssociation) {
	for (Annotation annotation : annotations) {
		if (annotation instanceof OneToMany) {
			OneToMany oneToMany = (OneToMany) annotation;
			return oneToMany.fetch() == FetchType.LAZY;
		}
		if (annotation instanceof ManyToOne) {
			ManyToOne manyToOne = (ManyToOne) annotation;
			return manyToOne.fetch() == FetchType.LAZY;
		}
		if (annotation instanceof ManyToMany) {
			ManyToMany manyToMany = (ManyToMany) annotation;
			return manyToMany.fetch() == FetchType.LAZY;
		}
		if (annotation instanceof ElementCollection) {
			ElementCollection elementCollection = (ElementCollection) annotation;
			return elementCollection.fetch() == FetchType.LAZY;
		}
	}
	return isAssociation;
}
 

private boolean getCascade(ManyToMany manyManyAnnotation, ManyToOne manyOneAnnotation, OneToMany oneManyAnnotation,
						   OneToOne oneOneAnnotation) {
	if (manyManyAnnotation != null) {
		return getCascade(manyManyAnnotation.cascade());
	}
	if (manyOneAnnotation != null) {
		return getCascade(manyOneAnnotation.cascade());
	}
	if (oneManyAnnotation != null) {
		return getCascade(oneManyAnnotation.cascade());
	}
	if (oneOneAnnotation != null) {
		return getCascade(oneOneAnnotation.cascade());
	}
	return false;
}
 

private String getMappedBy(MetaAttribute attr) {
    ManyToMany manyManyAnnotation = attr.getAnnotation(ManyToMany.class);
    OneToMany oneManyAnnotation = attr.getAnnotation(OneToMany.class);
    OneToOne oneOneAnnotation = attr.getAnnotation(OneToOne.class);
    String mappedBy = null;
    if (manyManyAnnotation != null) {
        mappedBy = manyManyAnnotation.mappedBy();
    }
    if (oneManyAnnotation != null) {
        mappedBy = oneManyAnnotation.mappedBy();
    }
    if (oneOneAnnotation != null) {
        mappedBy = oneOneAnnotation.mappedBy();
    }

    if (mappedBy != null && mappedBy.length() == 0) {
        mappedBy = null;
    }
    return mappedBy;
}
 

@Override
public Optional<ResourceFieldType> getFieldType(BeanAttributeInformation attributeDesc) {
    Optional<OneToOne> oneToOne = attributeDesc.getAnnotation(OneToOne.class);
    Optional<OneToMany> oneToMany = attributeDesc.getAnnotation(OneToMany.class);
    Optional<ManyToOne> manyToOne = attributeDesc.getAnnotation(ManyToOne.class);
    Optional<ManyToMany> manyToMany = attributeDesc.getAnnotation(ManyToMany.class);
    if (oneToOne.isPresent() || oneToMany.isPresent() || manyToOne.isPresent() || manyToMany.isPresent()) {
        return Optional.of(ResourceFieldType.RELATIONSHIP);
    }

    Optional<Id> id = attributeDesc.getAnnotation(Id.class);
    Optional<EmbeddedId> embeddedId = attributeDesc.getAnnotation(EmbeddedId.class);
    if (id.isPresent() || embeddedId.isPresent()) {
        return Optional.of(ResourceFieldType.ID);
    }
    return Optional.empty();
}
 

@Override
public Optional<SerializeType> getSerializeType(BeanAttributeInformation attributeDesc) {
    Optional<OneToMany> oneToMany = attributeDesc.getAnnotation(OneToMany.class);
    if (oneToMany.isPresent()) {
        return toSerializeType(oneToMany.get().fetch());
    }
    Optional<ManyToOne> manyToOne = attributeDesc.getAnnotation(ManyToOne.class);
    if (manyToOne.isPresent()) {
        return toSerializeType(manyToOne.get().fetch());
    }
    Optional<ManyToMany> manyToMany = attributeDesc.getAnnotation(ManyToMany.class);
    if (manyToMany.isPresent()) {
        return toSerializeType(manyToMany.get().fetch());
    }
    Optional<ElementCollection> elementCollection = attributeDesc.getAnnotation(ElementCollection.class);
    if (elementCollection.isPresent()) {
        return toSerializeType(elementCollection.get().fetch());
    }
    return Optional.empty();
}
 

@Override
public Optional<String> getMappedBy(BeanAttributeInformation attributeDesc) {
    Optional<OneToMany> oneToMany = attributeDesc.getAnnotation(OneToMany.class);
    if (oneToMany.isPresent()) {
        return Optional.of(oneToMany.get().mappedBy());
    }

    Optional<OneToOne> oneToOne = attributeDesc.getAnnotation(OneToOne.class);
    if (oneToOne.isPresent()) {
        return Optional.of(oneToOne.get().mappedBy());
    }

    Optional<ManyToMany> manyToMany = attributeDesc.getAnnotation(ManyToMany.class);
    if (manyToMany.isPresent()) {
        return Optional.of(manyToMany.get().mappedBy());
    }
    return Optional.empty();
}
 

private static boolean hasAnnotationsOnIdClass(XClass idClass) {
//		if(idClass.getAnnotation(Embeddable.class) != null)
//			return true;

		List<XProperty> properties = idClass.getDeclaredProperties( XClass.ACCESS_FIELD );
		for ( XProperty property : properties ) {
			if ( property.isAnnotationPresent( Column.class ) || property.isAnnotationPresent( OneToMany.class ) ||
					property.isAnnotationPresent( ManyToOne.class ) || property.isAnnotationPresent( Id.class ) ||
					property.isAnnotationPresent( GeneratedValue.class ) || property.isAnnotationPresent( OneToOne.class ) ||
					property.isAnnotationPresent( ManyToMany.class )
					) {
				return true;
			}
		}
		List<XMethod> methods = idClass.getDeclaredMethods();
		for ( XMethod method : methods ) {
			if ( method.isAnnotationPresent( Column.class ) || method.isAnnotationPresent( OneToMany.class ) ||
					method.isAnnotationPresent( ManyToOne.class ) || method.isAnnotationPresent( Id.class ) ||
					method.isAnnotationPresent( GeneratedValue.class ) || method.isAnnotationPresent( OneToOne.class ) ||
					method.isAnnotationPresent( ManyToMany.class )
					) {
				return true;
			}
		}
		return false;
	}
 

@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name = "org_user_role_rel", 
		joinColumns = {@JoinColumn(name = "user_id")}, 
		inverseJoinColumns = {@JoinColumn(name = "role_id")})
@Where(clause="delete_flag=0")
@OrderBy("no")
public Set<Role> getRoles() {
	return roles;
}
 

@XmlTransient
 @LazyCollection(LazyCollectionOption.EXTRA)
 @ManyToMany(fetch=FetchType.LAZY, cascade=CascadeType.ALL)
 @JoinTable(name = "role_mappings", joinColumns = { 
@JoinColumn(name = "user_id", nullable = false, updatable = false) }, 
inverseJoinColumns = { @JoinColumn(name = "role", 
		nullable = false, updatable = false) })
 public List<Role> getRoles() {return _roles;}
 

@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name = "org_role_resource_rel", 
	joinColumns = {@JoinColumn(name = "role_id")},
	inverseJoinColumns = {@JoinColumn(name = "resources_id")})
public Set<Resource> getResources() {
	return resources;
}
 

private boolean hasJpaAnnotations(MetaAttribute attribute) {
	List<Class<? extends Annotation>> annotationClasses = Arrays.asList(Id.class, EmbeddedId.class, Column.class,
			ManyToMany.class, ManyToOne.class, OneToMany.class, OneToOne.class, Version.class,
			ElementCollection.class);
	for (Class<? extends Annotation> annotationClass : annotationClasses) {
		if (attribute.getAnnotation(annotationClass) != null) {
			return true;
		}
	}
	return false;
}
 

/**
 * @return the installed products
 */
@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name = "suseImageInfoInstalledProduct",
    joinColumns = {
        @JoinColumn(name = "image_info_id", nullable = false, updatable = false)},
    inverseJoinColumns = {
        @JoinColumn(name = "installed_product_id", nullable = false, updatable = false)
})
public Set<InstalledProduct> getInstalledProducts() {
    return installedProducts;
}
 

/**
 * @return the patches
 */
@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name = "rhnImageNeededErrataCache",
        joinColumns = {@JoinColumn(name = "image_id")},
        inverseJoinColumns = {@JoinColumn(name = "errata_id")}
)
public Set<PublishedErrata> getPatches() {
    return patches;
}
 

/**
 * 获取拥有角色
 * 
 * @return {@link Role}
 */
@NotAudited
@ManyToMany
@JoinTable(name = "TB_ACCOUNT_USER_ROLE", joinColumns = { @JoinColumn(name = "USER_ID") }, inverseJoinColumns = { @JoinColumn(name = "ROLE_ID") })
public List<Role> getRoleList() {
	return roleList;
}
 

protected void addAssertValidCheckIfRequired(final Annotation constraintAnnotation, final Collection<Check> checks,
   @SuppressWarnings("unused") /*parameter for potential use by subclasses*/final AccessibleObject fieldOrMethod) {
   if (containsCheckOfType(checks, AssertValidCheck.class))
      return;

   if (constraintAnnotation instanceof OneToOne || constraintAnnotation instanceof OneToMany || constraintAnnotation instanceof ManyToOne
      || constraintAnnotation instanceof ManyToMany) {
      checks.add(new AssertValidCheck());
   }
}
 

/**
 * @return the channels
 */
@ManyToMany(fetch = FetchType.LAZY)
@JoinTable(name = "suseImageInfoChannel",
    joinColumns = {
        @JoinColumn(name = "image_info_id", nullable = false, updatable = false)},
    inverseJoinColumns = {
        @JoinColumn(name = "channel_id", nullable = false, updatable = false)}
)
public Set<Channel> getChannels() {
    return channels;
}
 

/**
 * @return the installed installedProducts
 */
@ManyToMany
@JoinTable(name = "suseImageInfoInstalledProduct",
           joinColumns = { @JoinColumn(name = "image_info_id") },
           inverseJoinColumns = { @JoinColumn(name = "installed_product_id") })
public Set<InstalledProduct> getInstalledProducts() {
    return installedProducts;
}
 

private static boolean discoverTypeWithoutReflection(XProperty p) {
	if ( p.isAnnotationPresent( OneToOne.class ) && !p.getAnnotation( OneToOne.class )
			.targetEntity()
			.equals( void.class ) ) {
		return true;
	}
	else if ( p.isAnnotationPresent( OneToMany.class ) && !p.getAnnotation( OneToMany.class )
			.targetEntity()
			.equals( void.class ) ) {
		return true;
	}
	else if ( p.isAnnotationPresent( ManyToOne.class ) && !p.getAnnotation( ManyToOne.class )
			.targetEntity()
			.equals( void.class ) ) {
		return true;
	}
	else if ( p.isAnnotationPresent( ManyToMany.class ) && !p.getAnnotation( ManyToMany.class )
			.targetEntity()
			.equals( void.class ) ) {
		return true;
	}
	else if ( p.isAnnotationPresent( org.hibernate.annotations.Any.class ) ) {
		return true;
	}
	else if ( p.isAnnotationPresent( ManyToAny.class ) ) {
		if ( !p.isCollection() && !p.isArray() ) {
			throw new AnnotationException( "@ManyToAny used on a non collection non array property: " + p.getName() );
		}
		return true;
	}
	else if ( p.isAnnotationPresent( Type.class ) ) {
		return true;
	}
	else if ( p.isAnnotationPresent( Target.class ) ) {
		return true;
	}
	return false;
}
 

private static boolean needsToCascade(Field field) {
    Class<?> fieldtype = field.getType();
    if (!DomainObject.class.isAssignableFrom(fieldtype))
        return false;
    Annotation ann;
    CascadeType[] cascades = null;
    ann = field.getAnnotation(OneToOne.class);
    if (ann != null) {
        cascades = ((OneToOne) ann).cascade();
    } else {
        ann = field.getAnnotation(OneToMany.class);
        if (ann != null) {
            cascades = ((OneToMany) ann).cascade();
        } else {
            ann = field.getAnnotation(ManyToOne.class);
            if (ann != null) {
                cascades = ((ManyToOne) ann).cascade();
            } else {
                ann = field.getAnnotation(ManyToMany.class);
                if (ann != null) {
                    cascades = ((ManyToMany) ann).cascade();
                }
            }
        }
    }
    if (cascades == null)
        return false;
    for (CascadeType cas : cascades) {
        if ((cas == CascadeType.ALL) || (cas == CascadeType.MERGE)
                || (cas == CascadeType.PERSIST)
                || (cas == CascadeType.REMOVE)) {
            return true;
        }
    }
    return false;
}
 

/**
 * Gets the roles.
 *
 * @return the roles
 */
@ManyToMany(fetch = FetchType.EAGER)
@JoinTable(name = "user_role", joinColumns = { @JoinColumn(name = "user_id") }, inverseJoinColumns = @JoinColumn(name = "role_id"))
@JsonIgnore
public Set<Role> getRoles() {
    return roles;
}
 

private CascadeType[] getCascadeTypes(AccessibleObject accessibleObject) {
    CascadeType[] cascadeTypes = null;
    if(accessibleObject.isAnnotationPresent(OneToMany.class)) {
        cascadeTypes = accessibleObject.getAnnotation(OneToMany.class).cascade();
    }else if(accessibleObject.isAnnotationPresent(ManyToOne.class)) {
        cascadeTypes = accessibleObject.getAnnotation(ManyToOne.class).cascade();
    }else if(accessibleObject.isAnnotationPresent(ManyToMany.class)) {
        cascadeTypes = accessibleObject.getAnnotation(ManyToMany.class).cascade();
    }
    return cascadeTypes;
}
 

/**
 * Gets the mappedBy value from an attribute
 * @param attribute attribute
 * @return mappedBy value or null if none.
 */
public static String getMappedBy(Attribute<?, ?> attribute) {
	String mappedBy = null;
	
	if (attribute.isAssociation()) {
		Annotation[] annotations = null;
		Member member = attribute.getJavaMember();
		if (member instanceof Field) {
			annotations = ((Field) member).getAnnotations();
		}
		else if (member instanceof Method) {
			annotations = ((Method) member).getAnnotations();
		}
		
		for (Annotation a : annotations) {
			if (a.annotationType().equals(OneToMany.class)) {
				mappedBy = ((OneToMany) a).mappedBy();
				break;
			}
			else if (a.annotationType().equals(ManyToMany.class)) {
				mappedBy = ((ManyToMany) a).mappedBy();
				break;
			}
			else if (a.annotationType().equals(OneToOne.class)) {
				mappedBy = ((OneToOne) a).mappedBy();
				break;
			}
		}
	}
	
	return "".equals(mappedBy) ? null : mappedBy;
}
 

public static boolean isManyToMany(Member member) {
	if ( Field.class.isInstance( member ) ) {
		return ( (Field) member ).getAnnotation( ManyToMany.class ) != null;
	}
	else if ( Method.class.isInstance( member ) ) {
		return ( (Method) member ).getAnnotation( ManyToMany.class ) != null;
	}

	return false;
}
 

/**
 * {@inheritDoc}
 */
public void initialize(Object control, String property, InitializationConfig config) {
	if (this.dao == null) {
		log.warn("Nothing to do without persistent service");
		return;
	}
	Class<?> clazz = config.getType();
	PropertyDescriptor pd = PropertyUtils.getPropertyDescriptor(clazz, property);

	if (pd == null) {
		log.error("Not found property descriptor for property [" + property + "]") ;
		return;
	}
		
	ResolvableType propertyType = ResolvableType.forMethodReturnType(pd.getReadMethod());
	Annotation[] annotations = getAnnotations(property, clazz);
	for (Annotation a : annotations) {
		List<Object> items = null;
		
		if (ManyToOne.class.equals(a.annotationType()) || ManyToMany.class.equals(a.annotationType()) ) {
			items = getEntityList(propertyType, config.getSortPropertyName());
			
		}
		else if (Reference.class.equals(a.annotationType())) {
			Reference r = (Reference) a;
			Class<?> type = void.class.equals(r.target()) ? propertyType.resolve() : r.target();
			List<Object> entities = getEntityList(type, config.getSortPropertyName());
			items = StringUtils.isEmpty(r.property()) ?  entities : 
				getValueList(entities, r.property());	
		}
		
		if (items != null) {
			if (control instanceof AbstractSelect) {
				for (Object item : items) 
					((AbstractSelect) control).addItem(item);
			}
			break;
		}
	}
}
 

@BeforeMethod
public void setup() {
	handler = new ManyToManyAnnotationHandler();
	annotation = mock(ManyToMany.class);
	metaData = mock(EntityMetaData.class);
	when(metaData.getEntityClass()).thenReturn((Class) DummyModel.class);
}
 

public static CtClass getTargetEntityClass(CtClass managedCtClass, CtField persistentField) throws NotFoundException {
	// get targetEntity defined in the annotation
	try {
		OneToOne oto = PersistentAttributesHelper.getAnnotation( persistentField, OneToOne.class );
		OneToMany otm = PersistentAttributesHelper.getAnnotation( persistentField, OneToMany.class );
		ManyToOne mto = PersistentAttributesHelper.getAnnotation( persistentField, ManyToOne.class );
		ManyToMany mtm = PersistentAttributesHelper.getAnnotation( persistentField, ManyToMany.class );

		Class<?> targetClass = null;
		if ( oto != null ) {
			targetClass = oto.targetEntity();
		}
		if ( otm != null ) {
			targetClass = otm.targetEntity();
		}
		if ( mto != null ) {
			targetClass = mto.targetEntity();
		}
		if ( mtm != null ) {
			targetClass = mtm.targetEntity();
		}

		if ( targetClass != null && targetClass != void.class ) {
			return managedCtClass.getClassPool().get( targetClass.getName() );
		}
	}
	catch (NotFoundException ignore) {
	}

	// infer targetEntity from generic type signature
	String inferredTypeName = inferTypeName( managedCtClass, persistentField.getName() );
	return inferredTypeName == null ? null : managedCtClass.getClassPool().get( inferredTypeName );
}
 

@ManyToMany(cascade = {CascadeType.ALL}, fetch = FetchType.EAGER)
@JoinTable(name = "ContactToContactJoinTable",
        joinColumns = @JoinColumn(name = "parentContactId"),
        inverseJoinColumns = @JoinColumn(name = "childContactId"))
@XmlTransient
public Set<Contact> getContactChildren() {
   return contactChildren;
}
 

@ManyToMany(fetch=FetchType.LAZY, cascade=CascadeType.PERSIST)
@JoinTable(name = "album_media", 
		   joinColumns = { 
		@JoinColumn(name = "media_id", nullable = false, updatable = false) }, 
inverseJoinColumns = { 
		@JoinColumn(name = "album_id", nullable = false, updatable = false) })    
public List<Album> getAlbums() {return albums;}