Java Code Examples for javax.persistence.metamodel.Attribute#getName()

/**
 * Add an attribute to the model
 *
 * @param attr           the attribute
 * @param dataMartEntity the parent entity
 */
private void addField(Attribute attr, IModelEntity dataMartEntity, String keyPrefix) {
	String n = attr.getName();
	Member m = attr.getJavaMember();
	Class c = attr.getJavaType();
	String type = c.getName();

	// TODO: SCALE E PREC
	int scale = 0;
	int precision = 0;

	IModelField modelField = dataMartEntity.addNormalField(keyPrefix + attr.getName());
	modelField.setType(type);
	modelField.setPrecision(precision);
	modelField.setLength(scale);
	modelField.setJavaClass(c);
	propertiesInitializer.addProperties(modelField);
}
 

private String getReferenceColumnName(AnnotatedElement annotatedElement2, Attribute<?, ?> referencedAttribute) {
  String refColName = null;
  Column c = annotatedElement2.getAnnotation(Column.class);
  if(c != null) {
    refColName = c.name();
  }
  return refColName == null || "".equals(refColName)
      ? referencedAttribute.getName()
      : refColName;
}
 

/**
 * This method adds the normal fields to the model entry structure
 *
 * @param modelEntity: the model entity to complete adding normal fields
 *
 * @return a list of entities in ONE_TO_MANY relationship with the entity passed in as parameter (i.e. entities whose input entity is related to by means of
 *         e foreign key - MANY_TO_ONE relatioship)
 */
public List<IModelEntity> addNormalFields(IModelEntity modelEntity) {

	logger.debug("Adding the field " + modelEntity.getName());
	List<IModelEntity> subEntities = new ArrayList<IModelEntity>();
	EntityType thisEntityType = null;

	Metamodel classMetadata = getEntityManager().getMetamodel();

	for (Iterator it = classMetadata.getEntities().iterator(); it.hasNext();) {
		EntityType et = (EntityType) it.next();
		if (et.getJavaType().getName().equals(modelEntity.getType())) {
			thisEntityType = et;
			break;
		}
	}

	if (thisEntityType == null) {
		return new ArrayList();
	}

	Set<Attribute> attributes = thisEntityType.getAttributes();
	Iterator<Attribute> attributesIt = attributes.iterator();

	while (attributesIt.hasNext()) {
		Attribute a = attributesIt.next();
		// normal attribute
		if (a.getPersistentAttributeType().equals(PersistentAttributeType.BASIC)) {
			addField(a, modelEntity, "");
		} else if (a.getPersistentAttributeType().equals(PersistentAttributeType.MANY_TO_ONE)) { // relation
			Class c = a.getJavaType();
			javax.persistence.JoinColumn joinColumn = null;
			String entityType = c.getName();
			String columnName = a.getName();
			String joinColumnnName = a.getName();
			String entityName = a.getName(); // getEntityNameFromEntityType(entityType);

			try {
				joinColumn = (((java.lang.reflect.Field) a.getJavaMember()).getAnnotation(javax.persistence.JoinColumn.class));
			} catch (Exception e) {
				logger.error("Error loading the join column annotation for entity " + entityName, e);
			}

			if (joinColumn != null) {
				joinColumnnName = joinColumn.name();
				// add in the entity a property that maps the column name with the join column
				modelEntity.getProperties().put(columnName, joinColumnnName);
			}

			IModelEntity subentity = new ModelEntity(entityName, null, columnName, entityType, modelEntity.getStructure());
			subEntities.add(subentity);
		} else if (a.getPersistentAttributeType().equals(PersistentAttributeType.EMBEDDED)) { // key
			Set<Attribute> keyAttre = ((EmbeddableType) ((SingularAttribute) a).getType()).getAttributes();
			Iterator<Attribute> keyIter = keyAttre.iterator();
			while (keyIter.hasNext()) {
				addField(keyIter.next(), modelEntity, a.getName() + ".");
			}
		}
	}

	logger.debug("Field " + modelEntity.getName() + " added");
	return subEntities;
}