Introduce command class

Redis/include/Poco/Redis/Command.h

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+//
+// Command.h
+//
+// $Id$
+//
+// Library: Redis
+// Package: Redis
+// Module:  Command
+//
+// Definition of the Command class.
+//
+// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+#ifndef Redis_Command_INCLUDED
+#define Redis_Command_INCLUDED
+
+#include "Poco/Redis/Redis.h"
+#include "Poco/Redis/Array.h"
+
+namespace Poco {
+namespace Redis {
+
+class Redis_API Command : public Array
+	/// Helper class for creating commands. This class contains
+	/// factory methods for common used Redis commands.
+{
+public:
+	Command(const std::string& command);
+		/// Constructor
+
+	Command(const Command& copy);
+		/// Copy constructor
+
+	virtual ~Command();
+		/// Destructor
+
+	static Command set(const std::string& key, const std::string& value, bool overwrite = true, const Poco::Timespan& expireTime = 0, bool create = true);
+		/// Returns a SET command to set the key with a value
+};
+
+}} // namespace Poco::Redis
+
+#endif // Redis_Command_INCLUDED

Redis/src/Command.cpp

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+//
+// Command.cpp
+//
+// $Id$
+//
+// Library: Redis
+// Package: Redis
+// Module:  Command
+//
+// Implementation of the Command class.
+//
+// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+#include "Poco/Redis/Command.h"
+
+namespace Poco {
+namespace Redis {
+
+Command::Command(const std::string& command) : Array()
+{
+	add(command);
+}
+
+Command::Command(const Command& copy) : Array(copy)
+{
+}
+
+Command::~Command()
+{
+}
+
+Command Command::set(const std::string& key, const std::string& value, bool overwrite, const Poco::Timespan& expireTime, bool create)
+{
+	Command cmd("SET");
+	cmd.add(key);
+	cmd.add(value);
+	if ( ! overwrite ) cmd.add("NX");
+	if ( ! create ) cmd.add("XX");
+
+	if ( expireTime.totalMicroseconds() > 0 )
+	{
+		cmd.add("PX");
+		cmd.add(expireTime.totalMilliseconds());
+	}
+
+	return cmd;
+}
+
+
+}} // Poco::Redis