CollectionReferenceService.java
package de.dlr.shepard.neo4Core.services;
import java.util.List;
import de.dlr.shepard.exceptions.InvalidBodyException;
import de.dlr.shepard.neo4Core.dao.CollectionDAO;
import de.dlr.shepard.neo4Core.dao.CollectionReferenceDAO;
import de.dlr.shepard.neo4Core.dao.DataObjectDAO;
import de.dlr.shepard.neo4Core.dao.UserDAO;
import de.dlr.shepard.neo4Core.entities.Collection;
import de.dlr.shepard.neo4Core.entities.CollectionReference;
import de.dlr.shepard.neo4Core.entities.DataObject;
import de.dlr.shepard.neo4Core.entities.User;
import de.dlr.shepard.neo4Core.io.CollectionReferenceIO;
import de.dlr.shepard.util.DateHelper;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class CollectionReferenceService implements IReferenceService<CollectionReference, CollectionReferenceIO> {
private CollectionReferenceDAO collectionReferenceDAO = new CollectionReferenceDAO();
private DataObjectDAO dataObjectDAO = new DataObjectDAO();
private CollectionDAO collectionDAO = new CollectionDAO();
private UserDAO userDAO = new UserDAO();
private DateHelper dateHelper = new DateHelper();
@Override
public List<CollectionReference> getAllReferencesByDataObjectShepardId(long dataObjectShepardId) {
var references = collectionReferenceDAO.findByDataObjectShepardId(dataObjectShepardId);
return references;
}
@Override
public CollectionReference getReferenceByShepardId(long collectionReferenceShepardId) {
var reference = collectionReferenceDAO.findByShepardId(collectionReferenceShepardId);
if (reference == null || reference.isDeleted()) {
log.error("Collection Reference with id {} is null or deleted", collectionReferenceShepardId);
return null;
}
return reference;
}
@Override
public CollectionReference createReferenceByShepardId(long dataObjectShepardId,
CollectionReferenceIO collectionReference, String username) {
User user = userDAO.find(username);
DataObject dataObject = dataObjectDAO.findLightByShepardId(dataObjectShepardId);
Collection referenced = collectionDAO.findLightByShepardId(collectionReference.getReferencedCollectionId());
if (referenced == null || referenced.isDeleted()) {
throw new InvalidBodyException(String.format("The referenced collection with id %d could not be found.",
collectionReference.getReferencedCollectionId()));
}
CollectionReference toCreate = new CollectionReference();
toCreate.setCreatedAt(dateHelper.getDate());
toCreate.setCreatedBy(user);
toCreate.setDataObject(dataObject);
toCreate.setName(collectionReference.getName());
toCreate.setReferencedCollection(referenced);
toCreate.setRelationship(collectionReference.getRelationship());
CollectionReference created = collectionReferenceDAO.createOrUpdate(toCreate);
created.setShepardId(created.getId());
created = collectionReferenceDAO.createOrUpdate(created);
return created;
}
@Override
public boolean deleteReferenceByShepardId(long collectionReferenceShepardId, String username) {
User user = userDAO.find(username);
CollectionReference old = collectionReferenceDAO.findByShepardId(collectionReferenceShepardId);
old.setDeleted(true);
old.setUpdatedAt(dateHelper.getDate());
old.setUpdatedBy(user);
collectionReferenceDAO.createOrUpdate(old);
return true;
}
public Collection getPayloadByShepardId(long collectionReferenceShepardId) {
var reference = collectionReferenceDAO.findByShepardId(collectionReferenceShepardId);
var collection = collectionDAO.findByShepardId(reference.getReferencedCollection().getShepardId());
if (collection.isDeleted()) {
log.error("Collection with id {} is deleted", reference.getReferencedCollection().getId());
return null;
}
return collection;
}
}