HibernateDao.java
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package core.dao;
import core.repository.*;
import core.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<TempRssi> reply = new TransactionCallBack<TempRssi>();
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((TempRssi)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 Map map){return internal_saveData(map);}
public Map getMap(int mapId){
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack<Map>();
Query query = session.createQuery("from Map m where m.id = :id");
query.setParameter("id", mapId);
List<Object> results = query.list();
for(Object result : results){
if(result instanceof Map)
reply.getResults().add(result);
}
return reply;
});
return (callBack.getResults().isEmpty()?null:(Map)callBack.getResults().get(0));
}
public List<AccessPoint> getAccessPoints(String apMacAddress) {
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack<AccessPoint>();
Query query = session.createQuery("from AccessPoint ap where ap.mac_addr = :addr");
query.setParameter("addr", apMacAddress);
List<Object> results = query.list();
for(Object result : results){
if(result instanceof AccessPoint)
reply.getResults().add(result);
}
return reply;
});
List<AccessPoint> reply = new ArrayList<>();
callBack.getResults().forEach(result->reply.add((AccessPoint)result));
return reply;
}
public int saveLocation(Location location) {
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack<Integer> reply = new TransactionCallBack<Integer>();
Integer id = (Integer) session.save(location);
if(id!=null)
reply.results.add(id);
return reply;
});
if(callBack!=null && callBack.results.size()>0)
return (Integer)callBack.results.get(0);
return -1;
}
public Location getLocation(int Location) {
TransactionCallBack callBack = execTransactionProcess((session)->{
TransactionCallBack reply = new TransactionCallBack<Location>();
Query query = session.createQuery("from Location loc where loc.id = :id");
query.setParameter("id", Location);
List<Object> results = query.list();
for(Object result : results){
if(result instanceof Location)
reply.getResults().add(result);
}
return reply;
});
return (callBack.getResults().isEmpty()?null:(Location)callBack.getResults().get(0));
}
private interface ITransactionProcess{
TransactionCallBack exec(Session tr);
}
private class TransactionCallBack<T>{
private boolean status;
private List<T> results;
TransactionCallBack () {
status = false;
results = new ArrayList<T>();
}
boolean isStatus () {
return status;
}
void setStatus (final boolean status) {
this.status = status;
}
List<T> getResults () {
return results;
}
void setResults (final List<T> results) {
this.results = results;
}
}
}