/* ===========================================================
* TradeManager : a application to trade strategies for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2011-2011, by Simon Allen and Contributors.
*
* Project Info: org.trade
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Oracle, Inc.
* in the United States and other countries.]
*
* (C) Copyright 2011-2011, by Simon Allen and Contributors.
*
* Original Author: Simon Allen;
* Contributor(s): -;
*
* Changes
* -------
*
*/
package org.trade.persistent.dao;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Expression;
import javax.persistence.criteria.Root;
import org.trade.core.dao.EntityManagerHelper;
import org.trade.core.util.TradingCalendar;
/**
*/
@Stateless
public class TradeOrderHome {
public TradeOrderHome() {
}
/**
* Method persist.
*
* @param transientInstance
* TradeOrder
* @return TradeOrder
*/
public synchronized TradeOrder persist(final TradeOrder transientInstance) {
try {
EntityManager entityManager = EntityManagerHelper.getEntityManager();
entityManager.getTransaction().begin();
transientInstance.setLastUpdateDate(TradingCalendar.getDateTimeNowMarketTimeZone());
if (null == transientInstance.getIdTradeOrder()) {
if (null != transientInstance.getTradePosition()) {
if (null != transientInstance.getTradePosition().getIdTradePosition()) {
entityManager.find(TradePosition.class,
transientInstance.getTradePosition().getIdTradePosition());
TradePosition instance = entityManager.merge(transientInstance.getTradePosition());
transientInstance.setTradePosition(instance);
}
}
entityManager.persist(transientInstance);
entityManager.getTransaction().commit();
return transientInstance;
} else {
TradeOrder instance = entityManager.merge(transientInstance);
entityManager.getTransaction().commit();
transientInstance.setVersion(instance.getVersion());
return instance;
}
} catch (Exception re) {
EntityManagerHelper.logError("ERROR saving TradeOrder Msg: " + re.getCause().getMessage(), re);
EntityManagerHelper.rollback();
throw re;
} finally {
EntityManagerHelper.close();
}
}
/**
* Method findById.
*
* @param id
* Integer
* @return TradeOrder
*/
public TradeOrder findById(Integer id) {
try {
EntityManager entityManager = EntityManagerHelper.getEntityManager();
entityManager.getTransaction().begin();
TradeOrder instance = entityManager.find(TradeOrder.class, id);
entityManager.getTransaction().commit();
return instance;
} catch (Exception re) {
EntityManagerHelper.rollback();
throw re;
} finally {
EntityManagerHelper.close();
}
}
/**
* Method findTradeOrderByKey.
*
* @param orderKey
* Integer
* @return TradeOrder
*/
public synchronized TradeOrder findTradeOrderByKey(Integer orderKey) {
try {
EntityManager entityManager = EntityManagerHelper.getEntityManager();
entityManager.getTransaction().begin();
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<TradeOrder> query = builder.createQuery(TradeOrder.class);
Root<TradeOrder> from = query.from(TradeOrder.class);
query.select(from);
query.where(builder.equal(from.get("orderKey"), orderKey));
List<TradeOrder> items = entityManager.createQuery(query).getResultList();
for (TradeOrder tradeOrder : items) {
tradeOrder.getTradeOrderfills().size();
}
entityManager.getTransaction().commit();
if (items.size() > 0) {
return items.get(0);
}
return null;
} catch (Exception re) {
EntityManagerHelper.rollback();
throw re;
} finally {
EntityManagerHelper.close();
}
}
/**
* Method findTradeOrderByMaxKey.
*
* @return Integer
*/
public Integer findTradeOrderByMaxKey() {
try {
EntityManager entityManager = EntityManagerHelper.getEntityManager();
entityManager.getTransaction().begin();
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<Object> query = builder.createQuery();
Root<TradeOrder> from = query.from(TradeOrder.class);
Expression<Integer> id = from.get("orderKey");
Expression<Integer> minExpression = builder.max(id);
CriteriaQuery<Object> select = query.select(minExpression);
TypedQuery<Object> typedQuery = entityManager.createQuery(select);
Object item = typedQuery.getSingleResult();
entityManager.getTransaction().commit();
if (null == item)
item = new Integer(0);
return (Integer) item;
} catch (Exception re) {
EntityManagerHelper.rollback();
throw re;
} finally {
EntityManagerHelper.close();
}
}
}