HibernateDao.java
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package com.utbm.lo53.dao;
import com.utbm.lo53.repository.*;
import com.utbm.lo53.utils.HibernateUtil;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Guillaume on 09/05/2017.
*/
public class HibernateDao {
public HibernateDao () {
}
private TransactionCallBack execTransactionProcess(ITransactionProcess itp) {
Session session = HibernateUtil.getSessionFactory().openSession();
TransactionCallBack reply = new TransactionCallBack();
try {
session.beginTransaction();
reply = itp.exec(session);
session.getTransaction().commit();
reply.setStatus(true);
return reply;
} catch (HibernateException he) {
he.printStackTrace();
if (session.getTransaction() != null) {
try {
session.getTransaction().rollback();
} catch (HibernateException he2) {
he2.printStackTrace();
}
}
} finally {
if (session != null) {
try {
session.close();
} catch (HibernateException ex) {
ex.printStackTrace();
}
}
}
return reply;
}
private <T> List<T> internal_getData(Class<T> clazz){
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack<T>();
Query query = session.createQuery("from "+clazz.getSimpleName());
List<Object> results = query.list();
for(Object result : results){
if(clazz.isInstance(result))
reply.getResults().add(result);
}
return reply;
});
return callBack.getResults();
}
private boolean internal_saveData(Object... objs){
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack();
for(Object obj : objs){
session.persist(obj);
}
return reply;
});
return callBack!=null && callBack.isStatus();
}
public boolean saveTempRssi(TempRssi... trs){
return internal_saveData(trs);
}
public List<TempRssi> getTempRssi(String macAddr){
if(macAddr == null)
return new ArrayList<>();
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack<RssiRecord>();
Query query = session.createQuery("from TempRssi tr where tr.client_mac_addr = :mac_addr");
query.setParameter("mac_addr", macAddr);
List<Object> results = query.list();
for(Object result : results){
if(result instanceof TempRssi)
reply.getResults().add(result);
}
return reply;
});
return callBack.getResults();
}
public boolean saveRssiRecord(RssiRecord... rssis){
return internal_saveData(rssis);
}
public List<RssiRecord> getRssiRecord(){
return internal_getData(RssiRecord.class);
}
public List<RssiRecord> getRssiRecord(Integer locationID){
if(locationID == null)
return getRssiRecord();
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack<RssiRecord>();
Query query = session.createQuery("from RssiRecord rr where rr.id = :id");
query.setParameter("id", locationID);
List<Object> results = query.list();
for(Object result : results){
if(result instanceof RssiRecord)
reply.getResults().add(result);
}
return reply;
});
return callBack.getResults();
}
public List<Location> getLocations(){
return internal_getData(Location.class);
}
public boolean saveAccessPoint (final AccessPoint... aps) {
return internal_saveData(aps);
}
public List<AccessPoint> getAccessPoint () {
return internal_getData(AccessPoint.class);
}
public boolean saveMap(final Mape mape){return internal_saveData(mape);}
public Mape getMap(int mapId){
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack<RssiRecord>();
Query query = session.createQuery("from Mape m where m.id = :id");
query.setParameter("id", mapId);
List<Object> results = query.list();
for(Object result : results){
if(result instanceof RssiRecord)
reply.getResults().add(result);
}
return reply;
});
return (callBack.getResults().isEmpty()?null:(Mape)callBack.getResults().get(0));
}
private interface ITransactionProcess{
public TransactionCallBack exec(Session tr);
}
private class TransactionCallBack<T>{
private boolean status;
private List<T> results;
public TransactionCallBack () {
status = false;
results = new ArrayList<T>();
}
public boolean isStatus () {
return status;
}
public void setStatus (final boolean status) {
this.status = status;
}
public List<T> getResults () {
return results;
}
public void setResults (final List<T> results) {
this.results = results;
}
}
}