574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
1 |
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
|
2 |
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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3 |
*
|
|
1999.6.1
by kalebral at gmail
update Copyright strings to a more common format to help with creating the master debian copyright file |
4 |
* Copyright (C) 2008 Sun Microsystems, Inc.
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or modify
|
|
7 |
* it under the terms of the GNU General Public License as published by
|
|
8 |
* the Free Software Foundation; version 2 of the License.
|
|
9 |
*
|
|
10 |
* This program is distributed in the hope that it will be useful,
|
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
13 |
* GNU General Public License for more details.
|
|
14 |
*
|
|
15 |
* You should have received a copy of the GNU General Public License
|
|
16 |
* along with this program; if not, write to the Free Software
|
|
17 |
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
18 |
*/
|
|
19 |
||
1241.9.36
by Monty Taylor
ZOMG. I deleted drizzled/server_includes.h. |
20 |
#include "config.h" |
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
21 |
|
670.1.20
by Monty Taylor
Renamed functions to function... everything else is singular. |
22 |
#include <drizzled/function/str/concat.h> |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
23 |
#include <drizzled/error.h> |
584.1.15
by Monty Taylor
The mega-patch from hell. Renamed sql_class to session (since that's what it is) and removed it and field and table from common_includes. |
24 |
#include <drizzled/session.h> |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
25 |
|
1067.4.6
by Nathan Williams
Converted all usages of cmax in drizzled/field/ and drizzled/function/ to std::max. |
26 |
#include <algorithm> |
27 |
||
28 |
using namespace std; |
|
29 |
||
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
30 |
namespace drizzled |
31 |
{
|
|
32 |
||
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
33 |
String *Item_func_concat::val_str(String *str) |
34 |
{
|
|
35 |
assert(fixed == 1); |
|
36 |
String *res,*res2,*use_as_buff; |
|
37 |
uint32_t i; |
|
38 |
bool is_const= 0; |
|
39 |
||
40 |
null_value=0; |
|
41 |
if (!(res=args[0]->val_str(str))) |
|
42 |
goto null; |
|
43 |
use_as_buff= &tmp_value; |
|
44 |
/* Item_subselect in --ps-protocol mode will state it as a non-const */
|
|
45 |
is_const= args[0]->const_item() || !args[0]->used_tables(); |
|
46 |
for (i=1 ; i < arg_count ; i++) |
|
47 |
{
|
|
48 |
if (res->length() == 0) |
|
49 |
{
|
|
50 |
if (!(res=args[i]->val_str(str))) |
|
1633.4.4
by Brian Aker
Remove more of current_session |
51 |
goto null; |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
52 |
}
|
53 |
else
|
|
54 |
{
|
|
55 |
if (!(res2=args[i]->val_str(use_as_buff))) |
|
1633.4.4
by Brian Aker
Remove more of current_session |
56 |
goto null; |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
57 |
if (res2->length() == 0) |
1633.4.4
by Brian Aker
Remove more of current_session |
58 |
continue; |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
59 |
if (res->length()+res2->length() > |
1633.4.4
by Brian Aker
Remove more of current_session |
60 |
session.variables.max_allowed_packet) |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
61 |
{
|
1633.4.4
by Brian Aker
Remove more of current_session |
62 |
push_warning_printf(&session, DRIZZLE_ERROR::WARN_LEVEL_WARN, |
63 |
ER_WARN_ALLOWED_PACKET_OVERFLOWED, |
|
64 |
ER(ER_WARN_ALLOWED_PACKET_OVERFLOWED), func_name(), |
|
65 |
session.variables.max_allowed_packet); |
|
66 |
goto null; |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
67 |
}
|
68 |
if (!is_const && res->alloced_length() >= res->length()+res2->length()) |
|
69 |
{ // Use old buffer |
|
1633.4.4
by Brian Aker
Remove more of current_session |
70 |
res->append(*res2); |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
71 |
}
|
72 |
else if (str->alloced_length() >= res->length()+res2->length()) |
|
73 |
{
|
|
1633.4.4
by Brian Aker
Remove more of current_session |
74 |
if (str == res2) |
75 |
str->replace(0,0,*res); |
|
76 |
else
|
|
77 |
{
|
|
78 |
str->copy(*res); |
|
79 |
str->append(*res2); |
|
80 |
}
|
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
81 |
res= str; |
82 |
use_as_buff= &tmp_value; |
|
83 |
}
|
|
84 |
else if (res == &tmp_value) |
|
85 |
{
|
|
1633.4.4
by Brian Aker
Remove more of current_session |
86 |
if (res->append(*res2)) // Must be a blob |
87 |
goto null; |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
88 |
}
|
89 |
else if (res2 == &tmp_value) |
|
90 |
{ // This can happend only 1 time |
|
1633.4.4
by Brian Aker
Remove more of current_session |
91 |
if (tmp_value.replace(0,0,*res)) |
92 |
goto null; |
|
93 |
res= &tmp_value; |
|
94 |
use_as_buff=str; // Put next arg here |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
95 |
}
|
96 |
else if (tmp_value.is_alloced() && res2->ptr() >= tmp_value.ptr() && |
|
1633.4.4
by Brian Aker
Remove more of current_session |
97 |
res2->ptr() <= tmp_value.ptr() + tmp_value.alloced_length()) |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
98 |
{
|
1633.4.4
by Brian Aker
Remove more of current_session |
99 |
/*
|
100 |
This happens really seldom:
|
|
101 |
In this case res2 is sub string of tmp_value. We will
|
|
102 |
now work in place in tmp_value to set it to res | res2
|
|
103 |
*/
|
|
104 |
/* Chop the last characters in tmp_value that isn't in res2 */
|
|
105 |
tmp_value.length((uint32_t) (res2->ptr() - tmp_value.ptr()) + |
|
106 |
res2->length()); |
|
107 |
/* Place res2 at start of tmp_value, remove chars before res2 */
|
|
108 |
if (tmp_value.replace(0,(uint32_t) (res2->ptr() - tmp_value.ptr()), |
|
109 |
*res)) |
|
110 |
goto null; |
|
111 |
res= &tmp_value; |
|
112 |
use_as_buff=str; // Put next arg here |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
113 |
}
|
114 |
else
|
|
115 |
{ // Two big const strings |
|
116 |
/*
|
|
1633.4.4
by Brian Aker
Remove more of current_session |
117 |
@note We should be prudent in the initial allocation unit -- the
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
118 |
size of the arguments is a function of data distribution, which
|
119 |
can be any. Instead of overcommitting at the first row, we grow
|
|
120 |
the allocated amount by the factor of 2. This ensures that no
|
|
121 |
more than 25% of memory will be overcommitted on average.
|
|
122 |
*/
|
|
123 |
||
1816.3.1
by Brian Aker
Convert sql_string to use size_t (this should clean up ICC warnings). |
124 |
size_t concat_len= res->length() + res2->length(); |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
125 |
|
126 |
if (tmp_value.alloced_length() < concat_len) |
|
127 |
{
|
|
128 |
if (tmp_value.alloced_length() == 0) |
|
129 |
{
|
|
130 |
if (tmp_value.alloc(concat_len)) |
|
131 |
goto null; |
|
132 |
}
|
|
133 |
else
|
|
134 |
{
|
|
1067.4.6
by Nathan Williams
Converted all usages of cmax in drizzled/field/ and drizzled/function/ to std::max. |
135 |
uint32_t new_len= max(tmp_value.alloced_length() * 2, concat_len); |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
136 |
|
137 |
if (tmp_value.realloc(new_len)) |
|
138 |
goto null; |
|
139 |
}
|
|
140 |
}
|
|
141 |
||
1633.4.4
by Brian Aker
Remove more of current_session |
142 |
if (tmp_value.copy(*res) || tmp_value.append(*res2)) |
143 |
goto null; |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
144 |
|
1633.4.4
by Brian Aker
Remove more of current_session |
145 |
res= &tmp_value; |
146 |
use_as_buff=str; |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
147 |
}
|
148 |
is_const= 0; |
|
149 |
}
|
|
150 |
}
|
|
151 |
res->set_charset(collation.collation); |
|
152 |
return res; |
|
153 |
||
154 |
null: |
|
155 |
null_value=1; |
|
156 |
return 0; |
|
157 |
}
|
|
158 |
||
159 |
||
160 |
void Item_func_concat::fix_length_and_dec() |
|
161 |
{
|
|
162 |
uint64_t max_result_length= 0; |
|
163 |
||
164 |
if (agg_arg_charsets(collation, args, arg_count, MY_COLL_ALLOW_CONV, 1)) |
|
165 |
return; |
|
166 |
||
167 |
for (uint32_t i=0 ; i < arg_count ; i++) |
|
168 |
{
|
|
169 |
if (args[i]->collation.collation->mbmaxlen != collation.collation->mbmaxlen) |
|
170 |
max_result_length+= (args[i]->max_length / |
|
171 |
args[i]->collation.collation->mbmaxlen) * |
|
1633.4.4
by Brian Aker
Remove more of current_session |
172 |
collation.collation->mbmaxlen; |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
173 |
else
|
174 |
max_result_length+= args[i]->max_length; |
|
175 |
}
|
|
176 |
||
177 |
if (max_result_length >= MAX_BLOB_WIDTH) |
|
178 |
{
|
|
179 |
max_result_length= MAX_BLOB_WIDTH; |
|
180 |
maybe_null= 1; |
|
181 |
}
|
|
182 |
max_length= (ulong) max_result_length; |
|
183 |
}
|
|
184 |
||
185 |
||
186 |
/**
|
|
187 |
concat with separator. First arg is the separator
|
|
188 |
concat_ws takes at least two arguments.
|
|
189 |
*/
|
|
190 |
||
191 |
String *Item_func_concat_ws::val_str(String *str) |
|
192 |
{
|
|
193 |
assert(fixed == 1); |
|
194 |
char tmp_str_buff[10]; |
|
195 |
String tmp_sep_str(tmp_str_buff, sizeof(tmp_str_buff),default_charset_info), |
|
196 |
*sep_str, *res, *res2,*use_as_buff; |
|
197 |
uint32_t i; |
|
198 |
||
199 |
null_value=0; |
|
200 |
if (!(sep_str= args[0]->val_str(&tmp_sep_str))) |
|
201 |
goto null; |
|
202 |
||
203 |
use_as_buff= &tmp_value; |
|
204 |
str->length(0); // QQ; Should be removed |
|
205 |
res=str; |
|
206 |
||
207 |
// Skip until non-null argument is found.
|
|
208 |
// If not, return the empty string
|
|
209 |
for (i=1; i < arg_count; i++) |
|
210 |
if ((res= args[i]->val_str(str))) |
|
211 |
break; |
|
212 |
if (i == arg_count) |
|
213 |
return &my_empty_string; |
|
214 |
||
215 |
for (i++; i < arg_count ; i++) |
|
216 |
{
|
|
217 |
if (!(res2= args[i]->val_str(use_as_buff))) |
|
218 |
continue; // Skip NULL |
|
219 |
||
220 |
if (res->length() + sep_str->length() + res2->length() > |
|
1633.4.4
by Brian Aker
Remove more of current_session |
221 |
session.variables.max_allowed_packet) |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
222 |
{
|
1633.4.4
by Brian Aker
Remove more of current_session |
223 |
push_warning_printf(&session, DRIZZLE_ERROR::WARN_LEVEL_WARN, |
224 |
ER_WARN_ALLOWED_PACKET_OVERFLOWED, |
|
225 |
ER(ER_WARN_ALLOWED_PACKET_OVERFLOWED), func_name(), |
|
226 |
session.variables.max_allowed_packet); |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
227 |
goto null; |
228 |
}
|
|
229 |
if (res->alloced_length() >= |
|
1633.4.4
by Brian Aker
Remove more of current_session |
230 |
res->length() + sep_str->length() + res2->length()) |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
231 |
{ // Use old buffer |
232 |
res->append(*sep_str); // res->length() > 0 always |
|
233 |
res->append(*res2); |
|
234 |
}
|
|
235 |
else if (str->alloced_length() >= |
|
1633.4.4
by Brian Aker
Remove more of current_session |
236 |
res->length() + sep_str->length() + res2->length()) |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
237 |
{
|
238 |
/* We have room in str; We can't get any errors here */
|
|
239 |
if (str == res2) |
|
240 |
{ // This is quote uncommon! |
|
1633.4.4
by Brian Aker
Remove more of current_session |
241 |
str->replace(0,0,*sep_str); |
242 |
str->replace(0,0,*res); |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
243 |
}
|
244 |
else
|
|
245 |
{
|
|
1633.4.4
by Brian Aker
Remove more of current_session |
246 |
str->copy(*res); |
247 |
str->append(*sep_str); |
|
248 |
str->append(*res2); |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
249 |
}
|
250 |
res=str; |
|
251 |
use_as_buff= &tmp_value; |
|
252 |
}
|
|
253 |
else if (res == &tmp_value) |
|
254 |
{
|
|
255 |
if (res->append(*sep_str) || res->append(*res2)) |
|
1633.4.4
by Brian Aker
Remove more of current_session |
256 |
goto null; // Must be a blob |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
257 |
}
|
258 |
else if (res2 == &tmp_value) |
|
259 |
{ // This can happend only 1 time |
|
260 |
if (tmp_value.replace(0,0,*sep_str) || tmp_value.replace(0,0,*res)) |
|
1633.4.4
by Brian Aker
Remove more of current_session |
261 |
goto null; |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
262 |
res= &tmp_value; |
263 |
use_as_buff=str; // Put next arg here |
|
264 |
}
|
|
265 |
else if (tmp_value.is_alloced() && res2->ptr() >= tmp_value.ptr() && |
|
1633.4.4
by Brian Aker
Remove more of current_session |
266 |
res2->ptr() < tmp_value.ptr() + tmp_value.alloced_length()) |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
267 |
{
|
268 |
/*
|
|
1633.4.4
by Brian Aker
Remove more of current_session |
269 |
This happens really seldom:
|
270 |
In this case res2 is sub string of tmp_value. We will
|
|
271 |
now work in place in tmp_value to set it to res | sep_str | res2
|
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
272 |
*/
|
273 |
/* Chop the last characters in tmp_value that isn't in res2 */
|
|
274 |
tmp_value.length((uint32_t) (res2->ptr() - tmp_value.ptr()) + |
|
1633.4.4
by Brian Aker
Remove more of current_session |
275 |
res2->length()); |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
276 |
/* Place res2 at start of tmp_value, remove chars before res2 */
|
277 |
if (tmp_value.replace(0,(uint32_t) (res2->ptr() - tmp_value.ptr()), |
|
1633.4.4
by Brian Aker
Remove more of current_session |
278 |
*res) || |
279 |
tmp_value.replace(res->length(),0, *sep_str)) |
|
280 |
goto null; |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
281 |
res= &tmp_value; |
282 |
use_as_buff=str; // Put next arg here |
|
283 |
}
|
|
284 |
else
|
|
285 |
{ // Two big const strings |
|
286 |
/*
|
|
1635
by Brian Aker
Merge up of Brian to trunk. Mainly work on ha_open, and some current_session |
287 |
@note We should be prudent in the initial allocation unit -- the
|
288 |
size of the arguments is a function of data distribution, which can
|
|
289 |
be any. Instead of overcommitting at the first row, we grow the
|
|
290 |
allocated amount by the factor of 2. This ensures that no more than
|
|
291 |
25% of memory will be overcommitted on average.
|
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
292 |
*/
|
293 |
||
1816.3.1
by Brian Aker
Convert sql_string to use size_t (this should clean up ICC warnings). |
294 |
size_t concat_len= res->length() + sep_str->length() + res2->length(); |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
295 |
|
296 |
if (tmp_value.alloced_length() < concat_len) |
|
297 |
{
|
|
298 |
if (tmp_value.alloced_length() == 0) |
|
299 |
{
|
|
300 |
if (tmp_value.alloc(concat_len)) |
|
301 |
goto null; |
|
302 |
}
|
|
303 |
else
|
|
304 |
{
|
|
1067.4.6
by Nathan Williams
Converted all usages of cmax in drizzled/field/ and drizzled/function/ to std::max. |
305 |
uint32_t new_len= max(tmp_value.alloced_length() * 2, concat_len); |
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
306 |
|
307 |
if (tmp_value.realloc(new_len)) |
|
308 |
goto null; |
|
309 |
}
|
|
310 |
}
|
|
311 |
||
312 |
if (tmp_value.copy(*res) || |
|
1633.4.4
by Brian Aker
Remove more of current_session |
313 |
tmp_value.append(*sep_str) || |
314 |
tmp_value.append(*res2)) |
|
315 |
goto null; |
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
316 |
res= &tmp_value; |
317 |
use_as_buff=str; |
|
318 |
}
|
|
319 |
}
|
|
320 |
res->set_charset(collation.collation); |
|
321 |
return res; |
|
322 |
||
323 |
null: |
|
324 |
null_value=1; |
|
325 |
return 0; |
|
326 |
}
|
|
327 |
||
328 |
||
329 |
void Item_func_concat_ws::fix_length_and_dec() |
|
330 |
{
|
|
331 |
uint64_t max_result_length; |
|
332 |
||
333 |
if (agg_arg_charsets(collation, args, arg_count, MY_COLL_ALLOW_CONV, 1)) |
|
334 |
return; |
|
335 |
||
336 |
/*
|
|
1633.4.4
by Brian Aker
Remove more of current_session |
337 |
arg_count cannot be less than 2,
|
338 |
it is done on parser level in sql_yacc.yy
|
|
339 |
so, (arg_count - 2) is safe here.
|
|
574.3.2
by Lee
initial changes to break out item_strfunc into functions/str |
340 |
*/
|
341 |
max_result_length= (uint64_t) args[0]->max_length * (arg_count - 2); |
|
342 |
for (uint32_t i=1 ; i < arg_count ; i++) |
|
343 |
max_result_length+=args[i]->max_length; |
|
344 |
||
345 |
if (max_result_length >= MAX_BLOB_WIDTH) |
|
346 |
{
|
|
347 |
max_result_length= MAX_BLOB_WIDTH; |
|
348 |
maybe_null= 1; |
|
349 |
}
|
|
350 |
max_length= (ulong) max_result_length; |
|
351 |
}
|
|
352 |
||
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
353 |
} /* namespace drizzled */ |