1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
1 |
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2008-2009 Sun Microsystems
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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||
20 |
/**
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1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
21 |
* @file Implementation of CreateField class
|
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
22 |
*/
|
23 |
||
1241.9.36
by Monty Taylor
ZOMG. I deleted drizzled/server_includes.h. |
24 |
#include "config.h" |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
25 |
#include <errno.h> |
1241.9.1
by Monty Taylor
Removed global.h. Fixed all the headers. |
26 |
#include <float.h> |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
27 |
#include "drizzled/sql_select.h" |
28 |
#include "drizzled/error.h" |
|
29 |
#include "drizzled/field.h" |
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30 |
#include "drizzled/create_field.h" |
|
31 |
#include "drizzled/field/str.h" |
|
32 |
#include "drizzled/field/num.h" |
|
33 |
#include "drizzled/field/blob.h" |
|
34 |
#include "drizzled/field/enum.h" |
|
35 |
#include "drizzled/field/null.h" |
|
36 |
#include "drizzled/field/date.h" |
|
37 |
#include "drizzled/field/decimal.h" |
|
38 |
#include "drizzled/field/real.h" |
|
39 |
#include "drizzled/field/double.h" |
|
40 |
#include "drizzled/field/long.h" |
|
41 |
#include "drizzled/field/int64_t.h" |
|
42 |
#include "drizzled/field/num.h" |
|
43 |
#include "drizzled/field/timestamp.h" |
|
44 |
#include "drizzled/field/datetime.h" |
|
45 |
#include "drizzled/field/varstring.h" |
|
1079.3.2
by Stewart Smith
Replace MAX_(DATE|TIME).*_WIDTH defines in definitions.h with real (and correct) static const members to Temporal types. |
46 |
#include "drizzled/temporal.h" |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
47 |
|
1067.4.1
by Nathan Williams
First few changes at converting cmin to std::min. |
48 |
#include <algorithm> |
49 |
||
50 |
using namespace std; |
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51 |
||
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
52 |
namespace drizzled |
53 |
{
|
|
1067.4.1
by Nathan Williams
First few changes at converting cmin to std::min. |
54 |
|
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
55 |
/** Create a field suitable for create of table. */
|
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
56 |
CreateField::CreateField(Field *old_field, Field *orig_field) |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
57 |
{
|
58 |
field= old_field; |
|
59 |
field_name= change= old_field->field_name; |
|
60 |
length= old_field->field_length; |
|
61 |
flags= old_field->flags; |
|
62 |
unireg_check= old_field->unireg_check; |
|
63 |
pack_length= old_field->pack_length(); |
|
64 |
key_length= old_field->key_length(); |
|
65 |
sql_type= old_field->real_type(); |
|
66 |
charset= old_field->charset(); // May be NULL ptr |
|
67 |
comment= old_field->comment; |
|
68 |
decimals= old_field->decimals(); |
|
69 |
||
70 |
/* Fix if the original table had 4 byte pointer blobs */
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|
71 |
if (flags & BLOB_FLAG) |
|
1532.1.15
by Brian Aker
Partial encapsulation of TableShare from Table. |
72 |
pack_length= (pack_length - old_field->table->getShare()->blob_ptr_size + portable_sizeof_char_ptr); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
73 |
|
74 |
switch (sql_type) |
|
75 |
{
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|
76 |
case DRIZZLE_TYPE_BLOB: |
|
77 |
sql_type= DRIZZLE_TYPE_BLOB; |
|
78 |
length/= charset->mbmaxlen; |
|
79 |
key_length/= charset->mbmaxlen; |
|
80 |
break; |
|
81 |
case DRIZZLE_TYPE_ENUM: |
|
82 |
case DRIZZLE_TYPE_VARCHAR: |
|
83 |
/* This is corrected in create_length_to_internal_length */
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|
84 |
length= (length+charset->mbmaxlen-1) / charset->mbmaxlen; |
|
85 |
break; |
|
86 |
default: |
|
87 |
break; |
|
88 |
}
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89 |
||
1315.2.15
by Stewart Smith
remove the now unused SET_FLAG define. We don't have the SET field type, and this flag was never set. |
90 |
if (flags & ENUM_FLAG) |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
91 |
interval= ((Field_enum*) old_field)->typelib; |
92 |
else
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|
93 |
interval= 0; |
|
94 |
def= 0; |
|
95 |
char_length= length; |
|
96 |
||
97 |
if (!(flags & (NO_DEFAULT_VALUE_FLAG )) && |
|
98 |
old_field->ptr && orig_field && |
|
99 |
(sql_type != DRIZZLE_TYPE_TIMESTAMP || /* set def only if */ |
|
100 |
old_field->table->timestamp_field != old_field || /* timestamp field */ |
|
101 |
unireg_check == Field::TIMESTAMP_UN_FIELD)) /* has default val */ |
|
102 |
{
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103 |
ptrdiff_t diff; |
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104 |
||
105 |
/* Get the value from default_values */
|
|
1574
by Brian Aker
Rollup patch for hiding tableshare. |
106 |
diff= (ptrdiff_t) (orig_field->table->getDefaultValues() - orig_field->table->record[0]); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
107 |
orig_field->move_field_offset(diff); // Points now at default_values |
108 |
if (! orig_field->is_real_null()) |
|
109 |
{
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110 |
char buff[MAX_FIELD_WIDTH], *pos; |
|
111 |
String tmp(buff, sizeof(buff), charset), *res; |
|
112 |
res= orig_field->val_str(&tmp); |
|
1253.1.6
by Monty Taylor
Moved mem_root functions into drizzled::memory:: namespace. |
113 |
pos= (char*) memory::sql_strmake(res->ptr(), res->length()); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
114 |
def= new Item_string(pos, res->length(), charset); |
115 |
}
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116 |
orig_field->move_field_offset(-diff); // Back to record[0] |
|
117 |
}
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|
118 |
}
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119 |
||
120 |
/**
|
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1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
121 |
Convert CreateField::length from number of characters to number of bytes.
|
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
122 |
*/
|
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
123 |
void CreateField::create_length_to_internal_length(void) |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
124 |
{
|
125 |
switch (sql_type) |
|
126 |
{
|
|
127 |
case DRIZZLE_TYPE_BLOB: |
|
128 |
case DRIZZLE_TYPE_VARCHAR: |
|
129 |
length*= charset->mbmaxlen; |
|
130 |
key_length= length; |
|
131 |
pack_length= calc_pack_length(sql_type, length); |
|
132 |
break; |
|
133 |
case DRIZZLE_TYPE_ENUM: |
|
134 |
/* Pack_length already calculated in ::init() */
|
|
135 |
length*= charset->mbmaxlen; |
|
136 |
key_length= pack_length; |
|
137 |
break; |
|
1211.1.1
by Brian Aker
Updating with my change to to DECIMAL from NEWDECIMAL and Stewart's update |
138 |
case DRIZZLE_TYPE_DECIMAL: |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
139 |
key_length= pack_length= |
140 |
my_decimal_get_binary_size(my_decimal_length_to_precision(length, |
|
141 |
decimals, |
|
142 |
flags & |
|
143 |
UNSIGNED_FLAG), |
|
144 |
decimals); |
|
145 |
break; |
|
146 |
default: |
|
147 |
key_length= pack_length= calc_pack_length(sql_type, length); |
|
148 |
break; |
|
149 |
}
|
|
150 |
}
|
|
151 |
||
152 |
/**
|
|
153 |
Init for a tmp table field. To be extended if need be.
|
|
154 |
*/
|
|
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
155 |
void CreateField::init_for_tmp_table(enum_field_types sql_type_arg, |
1119.9.10
by Jay Pipes
Removes FIELDFLAG_MAYBE_NULL and f_maybe_null() macro. |
156 |
uint32_t length_arg, |
157 |
uint32_t decimals_arg, |
|
1119.9.18
by Stewart Smith
Fix maybe_null for CreateField created for temp table in item/sum.cc (Item_sum_distinct) |
158 |
bool maybe_null) |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
159 |
{
|
160 |
field_name= ""; |
|
161 |
sql_type= sql_type_arg; |
|
162 |
char_length= length= length_arg;; |
|
163 |
unireg_check= Field::NONE; |
|
164 |
interval= 0; |
|
165 |
charset= &my_charset_bin; |
|
1119.9.16
by Stewart Smith
don't store decimal/double scale in pack_flag, instead use the numeric option scale field in the table proto. This removes f_decimals() macro and the bits in the pack_flag for scale. |
166 |
decimals= decimals_arg & FIELDFLAG_MAX_DEC; |
1119.9.18
by Stewart Smith
Fix maybe_null for CreateField created for temp table in item/sum.cc (Item_sum_distinct) |
167 |
|
168 |
if (! maybe_null) |
|
169 |
flags= NOT_NULL_FLAG; |
|
170 |
else
|
|
171 |
flags= 0; |
|
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
172 |
}
|
173 |
||
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
174 |
bool CreateField::init(Session *, |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
175 |
char *fld_name, |
176 |
enum_field_types fld_type, |
|
177 |
char *fld_length, |
|
178 |
char *fld_decimals, |
|
179 |
uint32_t fld_type_modifier, |
|
180 |
Item *fld_default_value, |
|
181 |
Item *fld_on_update_value, |
|
182 |
LEX_STRING *fld_comment, |
|
183 |
char *fld_change, |
|
184 |
List<String> *fld_interval_list, |
|
185 |
const CHARSET_INFO * const fld_charset, |
|
186 |
uint32_t, |
|
187 |
enum column_format_type column_format_in) |
|
188 |
||
189 |
{
|
|
190 |
uint32_t sign_len= 0; |
|
191 |
uint32_t allowed_type_modifier= 0; |
|
192 |
uint32_t max_field_charlength= MAX_FIELD_CHARLENGTH; |
|
193 |
||
194 |
field= 0; |
|
195 |
field_name= fld_name; |
|
196 |
def= fld_default_value; |
|
197 |
flags= fld_type_modifier; |
|
198 |
flags|= (((uint32_t)column_format_in & COLUMN_FORMAT_MASK) << COLUMN_FORMAT_FLAGS); |
|
199 |
unireg_check= (fld_type_modifier & AUTO_INCREMENT_FLAG ? |
|
200 |
Field::NEXT_NUMBER : Field::NONE); |
|
201 |
decimals= fld_decimals ? (uint32_t)atoi(fld_decimals) : 0; |
|
202 |
if (decimals >= NOT_FIXED_DEC) |
|
203 |
{
|
|
204 |
my_error(ER_TOO_BIG_SCALE, MYF(0), decimals, fld_name, |
|
205 |
NOT_FIXED_DEC-1); |
|
206 |
return(true); |
|
207 |
}
|
|
208 |
||
209 |
sql_type= fld_type; |
|
210 |
length= 0; |
|
211 |
change= fld_change; |
|
212 |
interval= 0; |
|
213 |
pack_length= key_length= 0; |
|
214 |
charset= fld_charset; |
|
1101.1.24
by Monty Taylor
Reverted my change to interval_list |
215 |
interval_list.empty(); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
216 |
|
217 |
comment= *fld_comment; |
|
218 |
||
219 |
/*
|
|
220 |
Set NO_DEFAULT_VALUE_FLAG if this field doesn't have a default value and
|
|
221 |
it is NOT NULL, not an AUTO_INCREMENT field and not a TIMESTAMP.
|
|
222 |
*/
|
|
223 |
if (!fld_default_value && !(fld_type_modifier & AUTO_INCREMENT_FLAG) && |
|
224 |
(fld_type_modifier & NOT_NULL_FLAG) && fld_type != DRIZZLE_TYPE_TIMESTAMP) |
|
225 |
flags|= NO_DEFAULT_VALUE_FLAG; |
|
226 |
||
227 |
if (fld_length && !(length= (uint32_t) atoi(fld_length))) |
|
971.6.11
by Eric Day
Removed purecov messages. |
228 |
fld_length= 0; |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
229 |
sign_len= fld_type_modifier & UNSIGNED_FLAG ? 0 : 1; |
230 |
||
231 |
switch (fld_type) |
|
232 |
{
|
|
233 |
case DRIZZLE_TYPE_LONG: |
|
234 |
if (!fld_length) |
|
235 |
length= MAX_INT_WIDTH+sign_len; |
|
236 |
allowed_type_modifier= AUTO_INCREMENT_FLAG; |
|
237 |
break; |
|
238 |
case DRIZZLE_TYPE_LONGLONG: |
|
239 |
if (!fld_length) |
|
240 |
length= MAX_BIGINT_WIDTH; |
|
241 |
allowed_type_modifier= AUTO_INCREMENT_FLAG; |
|
242 |
break; |
|
243 |
case DRIZZLE_TYPE_NULL: |
|
244 |
break; |
|
1211.1.1
by Brian Aker
Updating with my change to to DECIMAL from NEWDECIMAL and Stewart's update |
245 |
case DRIZZLE_TYPE_DECIMAL: |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
246 |
my_decimal_trim(&length, &decimals); |
247 |
if (length > DECIMAL_MAX_PRECISION) |
|
248 |
{
|
|
249 |
my_error(ER_TOO_BIG_PRECISION, MYF(0), length, fld_name, |
|
250 |
DECIMAL_MAX_PRECISION); |
|
251 |
return(true); |
|
252 |
}
|
|
253 |
if (length < decimals) |
|
254 |
{
|
|
255 |
my_error(ER_M_BIGGER_THAN_D, MYF(0), fld_name); |
|
256 |
return(true); |
|
257 |
}
|
|
258 |
length= my_decimal_precision_to_length(length, decimals, fld_type_modifier & UNSIGNED_FLAG); |
|
259 |
pack_length= my_decimal_get_binary_size(length, decimals); |
|
260 |
break; |
|
261 |
case DRIZZLE_TYPE_VARCHAR: |
|
262 |
/*
|
|
263 |
Long VARCHAR's are automaticly converted to blobs in mysql_prepare_table
|
|
264 |
if they don't have a default value
|
|
265 |
*/
|
|
266 |
max_field_charlength= MAX_FIELD_VARCHARLENGTH; |
|
267 |
break; |
|
268 |
case DRIZZLE_TYPE_BLOB: |
|
269 |
if (fld_default_value) |
|
270 |
{
|
|
271 |
/* Allow empty as default value. */
|
|
272 |
String str,*res; |
|
273 |
res= fld_default_value->val_str(&str); |
|
274 |
if (res->length()) |
|
275 |
{
|
|
276 |
my_error(ER_BLOB_CANT_HAVE_DEFAULT, MYF(0), fld_name); |
|
277 |
return(true); |
|
278 |
}
|
|
279 |
||
280 |
}
|
|
281 |
flags|= BLOB_FLAG; |
|
282 |
break; |
|
283 |
case DRIZZLE_TYPE_DOUBLE: |
|
284 |
allowed_type_modifier= AUTO_INCREMENT_FLAG; |
|
285 |
if (!fld_length && !fld_decimals) |
|
286 |
{
|
|
287 |
length= DBL_DIG+7; |
|
288 |
decimals= NOT_FIXED_DEC; |
|
289 |
}
|
|
290 |
if (length < decimals && |
|
291 |
decimals != NOT_FIXED_DEC) |
|
292 |
{
|
|
293 |
my_error(ER_M_BIGGER_THAN_D, MYF(0), fld_name); |
|
294 |
return(true); |
|
295 |
}
|
|
296 |
break; |
|
297 |
case DRIZZLE_TYPE_TIMESTAMP: |
|
298 |
if (!fld_length) |
|
299 |
{
|
|
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
300 |
length= DateTime::MAX_STRING_LENGTH; |
1079.3.2
by Stewart Smith
Replace MAX_(DATE|TIME).*_WIDTH defines in definitions.h with real (and correct) static const members to Temporal types. |
301 |
}
|
302 |
||
303 |
/* This assert() should be correct due to absence of length
|
|
304 |
specifiers for timestamp. Previous manipulation also wasn't
|
|
305 |
ever called (from examining lcov)
|
|
306 |
*/
|
|
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
307 |
assert(length == (uint32_t)DateTime::MAX_STRING_LENGTH); |
1079.3.2
by Stewart Smith
Replace MAX_(DATE|TIME).*_WIDTH defines in definitions.h with real (and correct) static const members to Temporal types. |
308 |
|
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
309 |
flags|= UNSIGNED_FLAG; |
310 |
if (fld_default_value) |
|
311 |
{
|
|
312 |
/* Grammar allows only NOW() value for ON UPDATE clause */
|
|
313 |
if (fld_default_value->type() == Item::FUNC_ITEM && |
|
314 |
((Item_func*)fld_default_value)->functype() == Item_func::NOW_FUNC) |
|
315 |
{
|
|
316 |
unireg_check= (fld_on_update_value ? Field::TIMESTAMP_DNUN_FIELD: |
|
317 |
Field::TIMESTAMP_DN_FIELD); |
|
318 |
/*
|
|
319 |
We don't need default value any longer moreover it is dangerous.
|
|
320 |
Everything handled by unireg_check further.
|
|
321 |
*/
|
|
322 |
def= 0; |
|
323 |
}
|
|
324 |
else
|
|
325 |
unireg_check= (fld_on_update_value ? Field::TIMESTAMP_UN_FIELD: |
|
326 |
Field::NONE); |
|
327 |
}
|
|
328 |
else
|
|
329 |
{
|
|
330 |
/*
|
|
331 |
If we have default TIMESTAMP NOT NULL column without explicit DEFAULT
|
|
332 |
or ON UPDATE values then for the sake of compatiblity we should treat
|
|
333 |
this column as having DEFAULT NOW() ON UPDATE NOW() (when we don't
|
|
334 |
have another TIMESTAMP column with auto-set option before this one)
|
|
335 |
or DEFAULT 0 (in other cases).
|
|
336 |
So here we are setting TIMESTAMP_OLD_FIELD only temporary, and will
|
|
337 |
replace this value by TIMESTAMP_DNUN_FIELD or NONE later when
|
|
338 |
information about all TIMESTAMP fields in table will be availiable.
|
|
339 |
||
340 |
If we have TIMESTAMP NULL column without explicit DEFAULT value
|
|
341 |
we treat it as having DEFAULT NULL attribute.
|
|
342 |
*/
|
|
343 |
unireg_check= (fld_on_update_value ? Field::TIMESTAMP_UN_FIELD : |
|
344 |
(flags & NOT_NULL_FLAG ? Field::TIMESTAMP_OLD_FIELD : |
|
345 |
Field::NONE)); |
|
346 |
}
|
|
347 |
break; |
|
348 |
case DRIZZLE_TYPE_DATE: |
|
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
349 |
length= Date::MAX_STRING_LENGTH; |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
350 |
break; |
351 |
case DRIZZLE_TYPE_DATETIME: |
|
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
352 |
length= DateTime::MAX_STRING_LENGTH; |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
353 |
break; |
354 |
case DRIZZLE_TYPE_ENUM: |
|
355 |
{
|
|
356 |
/* Should be safe. */
|
|
357 |
pack_length= get_enum_pack_length(fld_interval_list->elements); |
|
358 |
||
359 |
List_iterator<String> it(*fld_interval_list); |
|
360 |
String *tmp; |
|
361 |
while ((tmp= it++)) |
|
1101.1.24
by Monty Taylor
Reverted my change to interval_list |
362 |
interval_list.push_back(tmp); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
363 |
length= 1; |
364 |
break; |
|
365 |
}
|
|
366 |
}
|
|
367 |
/* Remember the value of length */
|
|
368 |
char_length= length; |
|
369 |
||
370 |
if (!(flags & BLOB_FLAG) && |
|
371 |
((length > max_field_charlength && |
|
372 |
fld_type != DRIZZLE_TYPE_ENUM && |
|
373 |
(fld_type != DRIZZLE_TYPE_VARCHAR || fld_default_value)) || |
|
374 |
(!length && fld_type != DRIZZLE_TYPE_VARCHAR))) |
|
375 |
{
|
|
376 |
my_error((fld_type == DRIZZLE_TYPE_VARCHAR) ? ER_TOO_BIG_FIELDLENGTH : ER_TOO_BIG_DISPLAYWIDTH, |
|
377 |
MYF(0), |
|
971.6.11
by Eric Day
Removed purecov messages. |
378 |
fld_name, max_field_charlength); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
379 |
return true; |
380 |
}
|
|
381 |
fld_type_modifier&= AUTO_INCREMENT_FLAG; |
|
382 |
if ((~allowed_type_modifier) & fld_type_modifier) |
|
383 |
{
|
|
384 |
my_error(ER_WRONG_FIELD_SPEC, MYF(0), fld_name); |
|
385 |
return true; |
|
386 |
}
|
|
387 |
||
388 |
return false; /* success */ |
|
389 |
}
|
|
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
390 |
|
391 |
} /* namespace drizzled */ |