From 73ef798bf849a01418895c2e88300e1c6730b665 Mon Sep 17 00:00:00 2001
From: Christian Mollekopf <chrigi_1@fastmail.fm>
Date: Wed, 15 Feb 2017 16:17:26 +0100
Subject: PropertyRegistry for runtime information about properties.

A first usecase is parsing different property types.
---
 common/domain/propertyregistry.h | 87 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 common/domain/propertyregistry.h

(limited to 'common/domain/propertyregistry.h')

diff --git a/common/domain/propertyregistry.h b/common/domain/propertyregistry.h
new file mode 100644
index 0000000..16df23b
--- /dev/null
+++ b/common/domain/propertyregistry.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2017 Christian Mollekopf <chrigi_1@fastmail.fm>
+ *
+ * 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) version 3, or any
+ * later version accepted by the membership of KDE e.V. (or its
+ * successor approved by the membership of KDE e.V.), which shall
+ * act as a proxy defined in Section 6 of version 3 of the license.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QHash>
+#include <QString>
+#include <QVariant>
+#include <functional>
+
+#include "applicationdomaintype.h"
+
+namespace Sink {
+namespace Private {
+
+template <typename T>
+QVariant parseString(const QString &);
+
+template <>
+QVariant parseString<QString>(const QString &s);
+
+template <>
+QVariant parseString<QByteArray>(const QString &s);
+
+template <>
+QVariant parseString<Sink::ApplicationDomain::Reference>(const QString &s);
+
+template <>
+QVariant parseString<Sink::ApplicationDomain::BLOB>(const QString &s);
+
+template <>
+QVariant parseString<bool>(const QString &s);
+
+template <>
+QVariant parseString<QList<QByteArray>>(const QString &s);
+
+template <>
+QVariant parseString<QDateTime>(const QString &s);
+
+template <>
+QVariant parseString<Sink::ApplicationDomain::Mail::Contact>(const QString &s);
+
+template <>
+QVariant parseString<QList<Sink::ApplicationDomain::Mail::Contact>>(const QString &s);
+
+class PropertyRegistry
+{
+public:
+    struct Type {
+        struct Property {
+            std::function<QVariant(const QString &)> parser;
+        };
+        QHash<QByteArray, Property> properties;
+    };
+
+    QHash<QByteArray, Type> registry;
+
+    static PropertyRegistry &instance();
+
+    template <typename PropertyType>
+    void registerProperty(const QByteArray &entityType) {
+        registry[entityType].properties[PropertyType::name].parser = Sink::Private::parseString<typename PropertyType::Type>;
+    }
+
+    QVariant parse(const QByteArray &type, const QByteArray &property, const QString &value);
+};
+
+    }
+}
+
-- 
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