initial commit Base app, core lib, plugin system

core/service.h

@@ -0,0 +1,48 @@
+#ifndef SERVICE_H
+#define SERVICE_H
+
+#include <QList>
+#include <QSharedPointer>
+
+#include <odb/core.hxx>
+#include <odb/transaction.hxx>
+#include <odb/database.hxx>
+#include <odb/result.hxx>
+
+template<class T>
+class Service
+{
+public:
+    Service() { }
+
+    QList<QSharedPointer<T> > all() {
+        odb::database *db = Context::instance().db();
+        odb::transaction tx(db->begin());
+        odb::result<T> res = db->template query<T>();
+
+        QList<QSharedPointer<T> > ret;
+        for (typename odb::result<T>::iterator it = res.begin(); it != res.end(); it++) {
+            QSharedPointer<T> entity = db->template load<T>(((T*)*it)->id());
+            ret.append(entity);
+        }
+
+        tx.commit();
+        return ret;
+    }
+
+    void save(QSharedPointer<T> entity) {
+        odb::database *db = Context::instance().db();
+        odb::transaction tx(db->begin());
+        db->persist(entity);
+        tx.commit();
+    }
+
+    QSharedPointer<T> loadById(int id) {
+        odb::database *db = Context::instance().db();
+        odb::transaction tx(db->begin());
+        db->template load<T>(id);
+        tx.commit();
+    }
+};
+
+#endif // SERVICE_H