dca3c4d8276cc0c33c188f663571c5ad0a106812
[m6w6/libmemcached] / libmemcached / initialize_query.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Libmemcached library
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above
15 * copyright notice, this list of conditions and the following disclaimer
16 * in the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * * The names of its contributors may not be used to endorse or
20 * promote products derived from this software without specific prior
21 * written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 */
36
37 #include <libmemcached/common.h>
38
39 memcached_return_t initialize_query(memcached_st *self, bool increment_query_id)
40 {
41 if (self == NULL)
42 {
43 return MEMCACHED_INVALID_ARGUMENTS;
44 }
45
46 if (increment_query_id)
47 {
48 self->query_id++;
49 }
50
51 if (self->state.is_time_for_rebuild)
52 {
53 memcached_reset(self);
54 }
55
56 if (memcached_server_count(self) == 0)
57 {
58 return memcached_set_error(*self, MEMCACHED_NO_SERVERS, MEMCACHED_AT);
59 }
60
61 memcached_error_free(*self);
62
63 return MEMCACHED_SUCCESS;
64 }
65
66 memcached_return_t initialize_const_query(const memcached_st *self)
67 {
68 if (self == NULL)
69 {
70 return MEMCACHED_INVALID_ARGUMENTS;
71 }
72
73 if (memcached_server_count(self) == 0)
74 {
75 return MEMCACHED_NO_SERVERS;
76 }
77
78 return MEMCACHED_SUCCESS;
79 }