Drizzled Public API Documentation

memc_replace_by_key.h
00001 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  * Copyright (C) 2009, Patrick "CaptTofu" Galbraith, Padraig O'Sullivan
00005  * All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions are met:
00009  *
00010  *   * Redistributions of source code must retain the above copyright notice,
00011  *     this list of conditions and the following disclaimer.
00012  *   * Redistributions in binary form must reproduce the above copyright notice,
00013  *     this list of conditions and the following disclaimer in the documentation
00014  *     and/or other materials provided with the distribution.
00015  *   * Neither the name of Patrick Galbraith nor the names of its contributors
00016  *     may be used to endorse or promote products derived from this software
00017  *     without specific prior written permission.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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00032 
00033 #pragma once
00034 
00035 #include <drizzled/function/str/strfunc.h>
00036 #include <drizzled/item/func.h>
00037 #include <string>
00038 
00039 
00040 /* implements memc_replace_by_key */
00041 class MemcachedReplaceByKey : public drizzled::Item_int_func
00042 {
00043   drizzled::String value;
00044   drizzled::String failure_buff;
00045 public:
00046   MemcachedReplaceByKey()
00047     :
00048       Item_int_func(),
00049      failure_buff("0", &drizzled::my_charset_bin)
00050   {}
00051 
00052   const char *func_name() const
00053   {
00054     return "memc_replace_by_key";
00055   }
00056 
00057   int64_t val_int();
00058 
00059   void fix_length_and_dec()
00060   {
00061     max_length= 32;
00062   }
00063   bool check_argument_count(int n)
00064   {
00065     return ((n == 3 || n == 4));
00066   }
00067 
00068 };
00069