/** 批量操作对象：添加、修改、删除 */
private static void optEntities(final List<?> entities, final int opt) throws Exception {
if (entities == null || entities.isEmpty()) {
return;
}
Object idf = null;
Session session = null;
Transaction tx = null;
try {
idf = HibernateUtil.createSession();
session = HibernateUtil.getSession();
tx = session.beginTransaction();
Object entity;
for (int i = 0, len = entities.size(); i < len; i++) {
entity = entities.get(i);
if (entity == null) {
continue;
}
switch (opt) {
case OPT_SAVE:
session.save(entity);
break;
case OPT_UPDATE:
session.update(entity);
break;
case OPT_DELETE:
session.delete(entity);
break;
default:
break;
}
if ((i + 1) % 50 == 0) {
session.flush();
session.clear();
}
}
session.flush();
session.clear();
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
session.clear();
}
throw error(".optEntities()", e);
} finally {
if (idf != null && session != null) {
closeQuickly(idf);
}
}
}
/** 关闭Session */
private static void closeQuickly(Object idf) {
try {
HibernateUtil.closeSession(idf);
} catch (Exception e) {
error(".closeQuickly()", e);
}
}
/** 操作对象：添加、修改、删除 */
private static Serializable optEntity(final Object entity, final int opt) throws Exception {
if (entity == null) {
return null;
}
Object idf = null;
Session session = null;
Transaction tx = null;
Serializable id = null;
try {
idf = HibernateUtil.createSession();
session = HibernateUtil.getSession();
tx = session.beginTransaction();
switch (opt) {
case OPT_SAVE:
id = session.save(entity);
break;
case OPT_UPDATE:
session.update(entity);
break;
case OPT_DELETE:
session.delete(entity);
break;
default:
break;
}
session.flush();
session.clear();
tx.commit();
return id;
} catch (Exception e) {
if (tx != null) {
tx.rollback();
session.clear();
}
throw error(".optEntity()", e);
} finally {
if (idf != null && session != null) {
closeQuickly(idf);
}
}
}
// --------------------------------
// TODO Worker/save/delete/update
// --------------------------------
public static <Params, Result> Result doWorker(
Worker<Params, Result> worker, Params... initParams) throws BLException, Exception {
if (worker == null) {
return null;
}
Object idf = null;
Session session = null;
Transaction tx = null;
try {
idf = HibernateUtil.createSession();
session = HibernateUtil.getSession();
tx = session.beginTransaction();
Result res = worker.execute(session, initParams);
session.flush();
session.clear();
tx.commit();
return res;
} catch (BLException e) {
if (tx != null) {
tx.rollback();
session.clear();
}
throw e;
} catch (Exception e) {
if (tx != null) {
tx.rollback();
session.clear();
}
throw error(".doWorker()", e);
} finally {
if (idf != null && session != null) {
closeQuickly(idf);
}
}
}