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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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 2 of the License.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include <drizzled/plugin/client.h>
#include <boost/tokenizer.hpp>
#include <vector>
#include <queue>
#include <string>
namespace drizzled {
namespace plugin {
/**
* This class is an empty client implementation for internal used.
*/
class NullClient: public Client
{
typedef std::vector<char> Bytes;
typedef std::queue<Bytes> Queue;
Queue to_execute;
bool is_dead;
Bytes packet_buffer;
public:
NullClient() :
is_dead(false)
{
}
virtual int getFileDescriptor(void) { return -1; }
virtual bool isConnected(void) { return true; }
virtual bool flush(void) { return false; }
virtual void close(void) {}
virtual bool authenticate(void) { return true; }
virtual bool readCommand(char **packet, uint32_t& packet_length)
{
while (not to_execute.empty())
{
Queue::value_type next= to_execute.front();
packet_buffer.assign(next.begin(), next.end());
*packet= &packet_buffer[0];
packet_length= next.size();
to_execute.pop();
return true;
}
if (not is_dead)
{
packet_buffer.resize(1);
packet_length= 1;
*packet= &packet_buffer[0];
is_dead= true;
return true;
}
packet_length= 0;
return false;
}
virtual void sendOK() {}
virtual void sendEOF() {}
virtual void sendError(const drizzled::error_t, const char*) {}
virtual void sendFields(List<Item>&) {}
virtual void store(Field *) {}
virtual void store(void) {}
virtual void store(int32_t) {}
virtual void store(uint32_t) {}
virtual void store(int64_t) {}
virtual void store(uint64_t) {}
virtual void store(double, uint32_t, String*) {}
virtual void store(const type::Time*) {}
virtual void store(const char*) {}
virtual void store(const char*, size_t) {}
virtual void store(str_ref) {}
virtual bool haveError() { return false; }
virtual bool wasAborted() { return false; }
void pushSQL(str_ref arg)
{
Bytes byte;
typedef boost::tokenizer<boost::escaped_list_separator<char> > Tokenizer;
Tokenizer tok(arg, boost::escaped_list_separator<char>("\\", ";", "\""));
for (Tokenizer::iterator iter= tok.begin(); iter != tok.end(); ++iter)
{
byte.resize(iter->size() +1); // +1 for the COM_QUERY
byte[0]= COM_QUERY;
memcpy(&byte[1], iter->data(), iter->size());
to_execute.push(byte);
}
}
};
} /* namespace plugin */
} /* namespace drizzled */
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