Drizzled Public API Documentation

query_cache_udf_tools.h
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00001 /* 
00002  * Copyright (C) 2010 Djellel Eddine Difallah
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  *   * Redistributions of source code must retain the above copyright notice,
00009  *     this list of conditions and the following disclaimer.
00010  *   * Redistributions in binary form must reproduce the above copyright notice,
00011  *     this list of conditions and the following disclaimer in the documentation
00012  *     and/or other materials provided with the distribution.
00013  *   * Neither the name of Djellel Eddine Difallah nor the names of its contributors
00014  *     may be used to endorse or promote products derived from this software
00015  *     without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00021  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
00027  * THE POSSIBILITY OF SUCH DAMAGE.
00028  */
00029 
00043 #pragma once
00044 
00045 #include <drizzled/item/func.h>
00046 #include <drizzled/function/str/strfunc.h>
00047 
00048 class PrintQueryCacheMetaFunction : public drizzled::Item_str_func
00049 {
00050 public:
00051   PrintQueryCacheMetaFunction() : Item_str_func() {}
00052   drizzled::String *val_str(drizzled::String*);
00053 
00054   void fix_length_and_dec();
00055 
00056   const char *func_name() const
00057   {
00058     return "print_query_cache_meta";
00059   }
00060 
00061   bool check_argument_count(int n)
00062   {
00063     return (n == 1);
00064   }
00065 };
00066 class QueryCacheFlushFunction: public drizzled::Item_int_func
00067 {
00068   drizzled::String value;
00069   drizzled::String failure_buff;
00070 public:
00071   QueryCacheFlushFunction()
00072     :
00073       Item_int_func(),
00074       failure_buff("0", &drizzled::my_charset_bin)
00075   {}
00076 
00077   const char *func_name() const
00078   {
00079     return "query_cache_flush";
00080   }
00081 
00082   int64_t val_int();
00083 
00084   void fix_length_and_dec()
00085   {
00086     max_length= 32;
00087   }
00088   /*
00089    * query_cache_flush takes 0 or 1 arguments
00090    */
00091   bool check_argument_count(int n)
00092   {
00093     return ((n == 1)||(n == 0));
00094   }
00095 
00096 };
00097