Drizzled Public API Documentation

memc_cas_by_key.cc
00001 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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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,
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00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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00031 
00032 #include <config.h>
00033 #include <drizzled/function/str/strfunc.h>
00034 
00035 #include "memcached_functions.h"
00036 #include "memc_cas_by_key.h"
00037 
00038 #include <libmemcached/memcached.h>
00039 
00040 #include <string>
00041 
00042 using namespace std;
00043 using namespace drizzled;
00044 
00045 int64_t MemcachedCasByKey::val_int()
00046 {
00047   memcached_return rc;
00048   time_t expiration= 0;
00049   String *master_key;
00050   String *key;
00051   String *res;
00052   String *cas;
00053   null_value= false;
00054 
00055   if ((arg_count != 4 && arg_count != 5) ||
00056       ! (master_key=   args[0]->val_str(&value)) ||
00057       ! (key=   args[1]->val_str(&value)) ||
00058       ! (res=   args[2]->val_str(&value)) ||
00059       ! (cas=   args[3]->val_str(&value)) ||
00060       ! memc)
00061   {
00062     return 0;
00063   }
00064 
00065   if (arg_count == 5)
00066   {
00067     String *tmp_exp= args[4]->val_str(&value);
00068     expiration= (time_t)atoi(tmp_exp->c_ptr());
00069   }
00070 
00071   rc= memcached_cas_by_key(memc,
00072                     master_key->c_ptr(),
00073                     master_key->length(),
00074                     key->c_ptr(), key->length(),
00075                     res->c_ptr(), res->length(),
00076                     expiration, (uint16_t) 0,
00077                     (uint64_t) strtol(cas->c_ptr(), (char **)NULL, 10));
00078 
00079   if (rc != MEMCACHED_SUCCESS)
00080   {
00081     return 0;
00082   }
00083 
00084   return 1;
00085 }