Mercurial > lada > lada-server
view src/main/java/de/intevation/lada/data/LOrtRepository.java @ 220:f0482fa04e2b
Code documentation and minor code style.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Thu, 04 Jul 2013 13:45:40 +0200 |
parents | 90404d19e75d |
children | 0de24f5e7c01 |
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package de.intevation.lada.data; import java.util.List; import java.util.Map; import javax.ejb.EJBTransactionRolledbackException; import javax.enterprise.context.ApplicationScoped; import javax.inject.Inject; import javax.inject.Named; import javax.persistence.EntityExistsException; import javax.persistence.EntityManager; import javax.persistence.TransactionRequiredException; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Root; import de.intevation.lada.manage.Manager; import de.intevation.lada.model.LOrt; import de.intevation.lada.rest.Response; import de.intevation.lada.validation.ValidationException; import de.intevation.lada.validation.Validator; /** * This Container is an interface to read, write and update LOrt objects. * * @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a> */ @ApplicationScoped @Named("lortrepository") public class LOrtRepository implements Repository { /** * The entitymanager managing the data. */ @Inject private EntityManager em; /** * The validator used for LOrt objects. */ @Inject @Named("lortvalidator") private Validator validator; /** * The data manager providing database operations. */ @Inject @Named("datamanager") private Manager manager; @Override public EntityManager getEntityManager() { return this.em; } /** * Filter object list by the given criteria. * * @param criteria The query filter. * @return Response object. */ public <T> Response filter(CriteriaQuery<T> filter) { List<T> result = em.createQuery(filter).getResultList(); return new Response(true, 200, result); } /** * Get all objects of type <link>clazz</link>from database. * * @param clazz The object type. * @return Response object. */ public <T> Response findAll(Class<T> clazz) { CriteriaBuilder builder = em.getCriteriaBuilder(); CriteriaQuery<T> criteria = builder.createQuery(clazz); Root<T> member = criteria.from(clazz); criteria.select(member); List<T> result = em.createQuery(criteria).getResultList(); return new Response(true, 200, result); } /** * Find a single object identified by its id. * * @param clazz The object type. * @param id The object id. * @return Response object. */ public <T> Response findById(Class<T> clazz, String id) { T item = em.find(clazz, id); if (item == null) { return new Response(false, 600, null); } return new Response(true, 200, item); } /** * Validate and persist a new LOrt object. * * @param object The new object * @return Response object. */ public Response create(Object object) { if (!(object instanceof LOrt)) { return new Response(false, 600, object); } LOrt ort = (LOrt)object; Response response = new Response(true, 200, ort); // Try to save the new LOrt. try { Map<String, Integer> warnings = validator.validate(ort); manager.create(ort); response.setWarnings(warnings); return response; } catch (EntityExistsException eee) { response.setSuccess(false); response.setMessage(601); } catch (IllegalArgumentException iae) { response.setSuccess(false); response.setMessage(602); } catch (TransactionRequiredException tre) { response.setSuccess(false); response.setMessage(603); } catch (ValidationException ve) { response.setSuccess(false); response.setMessage(604); response.setErrors(ve.getErrors()); response.setWarnings(ve.getWarnings()); } catch (EJBTransactionRolledbackException te) { response.setSuccess(false); response.setMessage(604); } return response; } /** * Validate and update a LOrt object. * * @param object The object to update. * @return Response object. */ public Response update(Object object) { if (!(object instanceof LOrt)) { return new Response(false, 600, object); } LOrt ort = (LOrt)object; Response response = new Response(true, 200, ort); // Try to update a LOrt object. try { Map<String, Integer> warnings = validator.validate(ort); manager.update(ort); response.setWarnings(warnings); return response; } catch (EntityExistsException eee) { response.setSuccess(false); response.setMessage(601); } catch (IllegalArgumentException iae) { response.setSuccess(false); response.setMessage(602); } catch (TransactionRequiredException tre) { response.setSuccess(false); response.setMessage(603); } catch (ValidationException ve) { response.setSuccess(false); response.setMessage(604); response.setErrors(ve.getErrors()); response.setWarnings(ve.getWarnings()); } catch (EJBTransactionRolledbackException te) { response.setSuccess(false); response.setMessage(604); } return response; } /** * Delete a LOrt object. * * @param object The object to delete. * @return Response object. */ public Response delete(Object object) { if (!(object instanceof LOrt)) { return new Response(false, 602, null); } LOrt ort = (LOrt)object; Response response = new Response(true, 200, null); try { manager.delete(ort); } catch (IllegalArgumentException iae) { response.setSuccess(false); response.setMessage(602); } catch (TransactionRequiredException tre) { response.setSuccess(false); response.setMessage(603); } return response; } }