Temp ideas

exceptions.h

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+// Squawk messenger.
+// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef CORE_DATABASE_EXCEPTIONS_H
+#define CORE_DATABASE_EXCEPTIONS_H
+
+#include "exception.h"
+#include "database.h"
+
+namespace Core {
+
+class DataBase::Directory: public Utils::Exception {
+public:
+    Directory(const std::string& p_path):Exception(), path(p_path){}
+
+    std::string getMessage() const{return "Can't create directory for database at " + path;}
+private:
+    std::string path;
+};
+
+class DataBase::Closed : public Utils::Exception {
+public:
+    Closed(const std::string& op, const std::string& acc):Exception(), operation(op), account(acc){}
+
+    std::string getMessage() const{return "An attempt to perform operation " + operation + " on closed archive for " + account;}
+private:
+    std::string operation;
+    std::string account;
+};
+
+class DataBase::Opened : public Utils::Exception {
+public:
+    Opened(const std::string& tn):Exception(), tableName(tn){}
+
+    std::string getMessage() const{return "An attempt to add table " + tableName + " but it's impossible to do if the DataBase is already opened";}
+private:
+    std::string tableName;
+};
+
+class DataBase::NotFound : public Utils::Exception {
+public:
+    NotFound(const std::string& k, const std::string& acc):Exception(), key(k), account(acc){}
+
+    std::string getMessage() const{return "Element for id " + key + " wasn't found in database " + account;}
+private:
+    std::string key;
+    std::string account;
+};
+
+class DataBase::Empty : public Utils::Exception {
+public:
+    Empty(const std::string& acc):Exception(), account(acc){}
+
+    std::string getMessage() const{return "An attempt to read ordered elements from database " + account + " but it's empty";}
+private:
+    std::string account;
+};
+
+class DataBase::Exist : public Utils::Exception {
+public:
+    Exist(const std::string& acc, const std::string& p_key):Exception(), account(acc), key(p_key){}
+
+    std::string getMessage() const{return "An attempt to insert element " + key + " to database " + account + " but it already has an element with given id";}
+private:
+    std::string account;
+    std::string key;
+};
+
+class DataBase::NoAvatar : public Utils::Exception {
+public:
+    NoAvatar(const std::string& el, const std::string& res):Exception(), element(el), resource(res){
+        if (resource.size() == 0) {
+            resource = "for himself";
+        }
+    }
+
+    std::string getMessage() const{return "Element " + element + " has no avatar for " + resource ;}
+private:
+    std::string element;
+    std::string resource;
+};
+
+class DataBase::Unknown : public Utils::Exception {
+public:
+    Unknown(const std::string& acc, const std::string& message):Exception(), account(acc), msg(message){}
+
+    std::string getMessage() const{return "Unknown error on database " + account + ": " + msg;}
+private:
+    std::string account;
+    std::string msg;
+};
+}
+#endif //CORE_DATABASE_EXCEPTIONS_H