add system operator agent

src/main/java/love/sola/netsupport/sql/SQLCore.java

@@ -37,6 +37,8 @@ public class SQLCore {
 
 			sr = new StandardServiceRegistryBuilder().configure().build();
 			sf = new MetadataSources(sr).buildMetadata().buildSessionFactory();
+
+			TableOperator.init();
 		} catch (Exception e) {
 			e.printStackTrace();
 		}

src/main/java/love/sola/netsupport/sql/TableOperator.java

@@ -22,5 +22,17 @@ public class TableOperator extends SQLCore {
 		}
 	}
 
+	public static Operator get(int id) {
+		try (Session s = SQLCore.sf.openSession()) {
+			return s.get(Operator.class, id);
+		}
+	}
+
+	protected static void init() {
+		try (Session s = SQLCore.sf.openSession()) {
+			Operator.USER_SELF = s.get(Operator.class, -1);
+			Operator.ADMIN = s.get(Operator.class, 0);
+		}
+	}
 
 }