src/ResultSet.h
branchv_0
changeset 36 91cb012d779a
child 43 7f396cdb9628
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ResultSet.h	Sun May 31 16:56:07 2020 +0200
@@ -0,0 +1,68 @@
+/**
+ * Relational pipes
+ * Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)
+ *
+ * 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, version 3.
+ *
+ * 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/>.
+ */
+#pragma once
+
+#include <codecvt>
+#include <locale>
+#include <vector>
+
+#include <relpipe/writer/typedefs.h>
+#include <relpipe/writer/TypeId.h>
+
+namespace relpipe {
+namespace tr {
+namespace sql {
+
+class ResultSet {
+public:
+
+	class MetaData {
+	public:
+
+		class ColumnDescriptor {
+		public:
+			relpipe::writer::string_t name;
+			relpipe::writer::TypeId type = relpipe::writer::TypeId::STRING;
+		};
+
+	private:
+		unsigned short columnCount;
+		std::vector<ColumnDescriptor> columnDescriptors;
+
+	public:
+		MetaData(unsigned short columnCount, std::vector<ColumnDescriptor> columnDescriptors);
+		virtual ~MetaData();
+		unsigned short getColumnCount();
+		ColumnDescriptor describeColumn(unsigned short columnNumber);
+	};
+private:
+	void* statement;
+	std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings
+
+public:
+	ResultSet(void* statement);
+	virtual ~ResultSet();
+	MetaData* getMetaData();
+	bool next();
+	relpipe::writer::boolean_t getBoolean(unsigned short columnNumber, bool* isNull = nullptr);
+	relpipe::writer::integer_t getInteger(unsigned short columnNumber, bool* isNull = nullptr);
+	relpipe::writer::string_t getString(unsigned short columnNumber, bool* isNull = nullptr);
+};
+
+}
+}
+}
\ No newline at end of file