public Entity updateEntity(Entity entity) throws ApplicationException {
if (entity == null) {
return entity;
}
if (entity.getEntityVersionId() == null) {
throw new ApplicationException(
"An entity definition must first be created before it is updated.");
}
try {
Date currentDate = new Date();
entity.setDateChanged(currentDate);
entity.setUserChangedBy(Context.getUserContext().getUser());
for (EntityAttribute attrib : entity.getAttributes()) {
if (attrib.getDateCreated() == null) {
attrib.setDateCreated(currentDate);
attrib.setUserCreatedBy(Context.getUserContext().getUser());
// attrib.setEntity(entity);
}
attrib.setEntity(entity);
}
// Mark deletion attributes
handleAttributeUpdates(entity);
// remove validations for marked attribute
for (EntityAttribute attrib : entity.getAttributes()) {
if (attrib.getUserVoidedBy() != null) {
// remove validations
List<EntityAttributeValidation> existingValidations =
loadEntityAttributeValidations(attrib);
for (EntityAttributeValidation validation : existingValidations) {
deleteEntityAttributeValidation(validation);
}
}
}
Entity updatedEntity = entityDefinitionDao.updateEntity(entity);
updatedEntity = entityDefinitionDao.loadEntity(entity.getEntityVersionId());
addToCache(updatedEntity);
Context.notifyObserver(ObservationEventType.ENTITY_ATTRIBUTE_UPDATE_EVENT, entity);
return updatedEntity;
} catch (DaoException e) {
throw new ApplicationException(e.getMessage());
}
}
private void handleAttributeUpdates(Entity entity) {
Entity existing = entityDefinitionDao.loadEntity(entity.getEntityVersionId());
Map<Integer, EntityAttribute> newAttribById = new HashMap<Integer, EntityAttribute>();
for (EntityAttribute attribute : entity.getAttributes()) {
newAttribById.put(attribute.getEntityAttributeId(), attribute);
}
// Mark for deletion attributes that were removed
for (EntityAttribute attrib : existing.getAttributes()) {
if (newAttribById.get(attrib.getEntityAttributeId()) == null) {
attrib.setDateVoided(entity.getDateChanged());
attrib.setUserVoidedBy(Context.getUserContext().getUser());
entity.addAttribute(attrib);
}
}
}
public Entity addEntity(Entity entity) throws ApplicationException {
if (entity == null) {
return null;
}
if (entity.getEntityVersionId() != null) {
throw new ApplicationException(
"This entity definition already exists so it can only be updated.");
}
validateNameUniqueness(entity);
try {
entity.setUserCreatedBy(Context.getUserContext().getUser());
Date dateCreated = new Date();
entity.setDateCreated(dateCreated);
for (EntityAttribute attribute : entity.getAttributes()) {
attribute.setDateCreated(dateCreated);
attribute.setUserCreatedBy(Context.getUserContext().getUser());
attribute.setEntity(entity);
}
entityDefinitionDao.addEntity(entity);
addToCache(entity);
Context.notifyObserver(ObservationEventType.ENTITY_ADD_EVENT, entity);
return entity;
} catch (DaoException e) {
throw new ApplicationException(e.getMessage());
}
}
public void deleteCustomField(CustomField field) throws ApplicationException {
if (field == null
|| ConvertUtil.isNullOrEmpty(field.getEntityName())
|| ConvertUtil.isNullOrEmpty(field.getFieldName())) {
log.warn("The custom field to be deleted is invalid: " + field);
throw new ApplicationException("Unable to add invalid custom field definition.");
}
Entity entity = findLatestEntityVersionByName(field.getEntityName());
EntityAttribute attrib = null;
for (EntityAttribute item : entity.getAttributes()) {
if (item.getName().equalsIgnoreCase(field.getFieldName()) && item.getDateVoided() == null) {
attrib = item;
}
}
if (attrib == null) {
log.info("The user attempted to delete a custom field that does not exist.");
throw new ApplicationException("Unable to delete an unknown custom field definition.");
}
attrib.setDateVoided(new Date());
attrib.setUserVoidedBy(Context.getUserContext().getUser());
try {
entityDefinitionDao.updateEntity(entity);
// Generate a notification event to inform interested listeners via the lightweight mechanism
// that this event has occurred.
Context.notifyObserver(ObservationEventType.CUSTOM_FIELD_DELETE_EVENT, field);
} catch (DaoException e) {
log.error("Failed while deleting a custom field: " + e, e);
throw new ApplicationException("Failed while deleting the custom field: " + e.getMessage());
}
}
/** Will export the entity passed in as the entity version id into a string. */
public String exportEntity(Integer entityVersionId) throws ApplicationException {
if (entityVersionId == null) {
return "";
}
Entity entity = entityDefinitionDao.loadEntity(entityVersionId);
try {
// 1. convert Entity to EntityModel
EntityModel entityModel = ConvertUtil.mapToEntityModel(entity, EntityModel.class);
// 2. set group info to EntityModel
List<EntityAttributeGroup> groups = loadEntityAttributeGroups(entity);
entityModel = ConvertUtil.setGroupInfoToEntityModel(groups, entityModel);
// 3. set validation info to entity attribute
for (EntityAttribute attribute : entity.getAttributes()) {
List<EntityAttributeValidation> validations = loadEntityAttributeValidations(attribute);
ValidationsType validationsType = ConvertUtil.mapToEntityValidations(validations);
// set validations info to attributeType
AttributesType attributesType = entityModel.getAttributes();
if (attributesType != null) {
for (AttributeType attributeType : attributesType.getAttribute()) {
String name = attributeType.getName();
if (attribute.getName().equals(name)) {
attributeType.setValidations(validationsType);
}
}
}
}
// export to xml format
JAXBContext jaxbContext = JAXBContext.newInstance(EntityModel.class);
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
OutputStream outputStream = new ByteArrayOutputStream();
jaxbMarshaller.marshal(entityModel, outputStream);
return outputStream.toString();
} catch (JAXBException e) {
log.warn("Unable to serialize a Entity into a string: " + e, e);
throw new RuntimeException(e);
}
}
public void deleteEntity(Entity entity) throws ApplicationException {
if (entity == null) {
return;
}
if (entity.getEntityVersionId() == null) {
throw new ApplicationException(
"An entity definition must first be created before it is deleted.");
}
try {
Date dateVoided = new Date();
entity.setDateVoided(dateVoided);
entity.setUserVoidedBy(Context.getUserContext().getUser());
for (EntityAttribute attribute : entity.getAttributes()) {
attribute.setDateVoided(dateVoided);
attribute.setUserVoidedBy(Context.getUserContext().getUser());
attribute.setEntity(entity);
}
entityDefinitionDao.updateEntity(entity);
addToCache(entity);
} catch (DaoException e) {
throw new ApplicationException(e.getMessage());
}
}