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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||
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/**
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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 |
*/
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23 |
||
24 |
#include "drizzled/server_includes.h" |
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25 |
#include <errno.h> |
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26 |
#include "drizzled/sql_select.h" |
|
27 |
#include "drizzled/error.h" |
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28 |
#include "drizzled/field.h" |
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29 |
#include "drizzled/create_field.h" |
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30 |
#include "drizzled/field/str.h" |
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31 |
#include "drizzled/field/num.h" |
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32 |
#include "drizzled/field/blob.h" |
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#include "drizzled/field/enum.h" |
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#include "drizzled/field/null.h" |
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35 |
#include "drizzled/field/date.h" |
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36 |
#include "drizzled/field/decimal.h" |
|
37 |
#include "drizzled/field/real.h" |
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38 |
#include "drizzled/field/double.h" |
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39 |
#include "drizzled/field/long.h" |
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40 |
#include "drizzled/field/int64_t.h" |
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41 |
#include "drizzled/field/num.h" |
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42 |
#include "drizzled/field/timestamp.h" |
|
43 |
#include "drizzled/field/datetime.h" |
|
44 |
#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. |
45 |
#include "drizzled/temporal.h" |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
46 |
|
1067.4.1
by Nathan Williams
First few changes at converting cmin to std::min. |
47 |
#include <algorithm> |
48 |
||
49 |
using namespace std; |
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50 |
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51 |
||
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
52 |
/** Create a field suitable for create of table. */
|
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
53 |
CreateField::CreateField(Field *old_field, Field *orig_field) |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
54 |
{
|
55 |
field= old_field; |
|
56 |
field_name= change= old_field->field_name; |
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57 |
length= old_field->field_length; |
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58 |
flags= old_field->flags; |
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59 |
unireg_check= old_field->unireg_check; |
|
60 |
pack_length= old_field->pack_length(); |
|
61 |
key_length= old_field->key_length(); |
|
62 |
sql_type= old_field->real_type(); |
|
63 |
charset= old_field->charset(); // May be NULL ptr |
|
64 |
comment= old_field->comment; |
|
65 |
decimals= old_field->decimals(); |
|
66 |
||
67 |
/* Fix if the original table had 4 byte pointer blobs */
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|
68 |
if (flags & BLOB_FLAG) |
|
69 |
pack_length= (pack_length - old_field->table->s->blob_ptr_size + portable_sizeof_char_ptr); |
|
70 |
||
71 |
switch (sql_type) |
|
72 |
{
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|
73 |
case DRIZZLE_TYPE_BLOB: |
|
74 |
sql_type= DRIZZLE_TYPE_BLOB; |
|
75 |
length/= charset->mbmaxlen; |
|
76 |
key_length/= charset->mbmaxlen; |
|
77 |
break; |
|
78 |
case DRIZZLE_TYPE_ENUM: |
|
79 |
case DRIZZLE_TYPE_VARCHAR: |
|
80 |
/* This is corrected in create_length_to_internal_length */
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|
81 |
length= (length+charset->mbmaxlen-1) / charset->mbmaxlen; |
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82 |
break; |
|
83 |
default: |
|
84 |
break; |
|
85 |
}
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86 |
||
87 |
if (flags & (ENUM_FLAG | SET_FLAG)) |
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88 |
interval= ((Field_enum*) old_field)->typelib; |
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89 |
else
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90 |
interval= 0; |
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91 |
def= 0; |
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char_length= length; |
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93 |
||
94 |
if (!(flags & (NO_DEFAULT_VALUE_FLAG )) && |
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95 |
old_field->ptr && orig_field && |
|
96 |
(sql_type != DRIZZLE_TYPE_TIMESTAMP || /* set def only if */ |
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97 |
old_field->table->timestamp_field != old_field || /* timestamp field */ |
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unireg_check == Field::TIMESTAMP_UN_FIELD)) /* has default val */ |
|
99 |
{
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ptrdiff_t diff; |
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101 |
||
102 |
/* Get the value from default_values */
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103 |
diff= (ptrdiff_t) (orig_field->table->s->default_values - orig_field->table->record[0]); |
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104 |
orig_field->move_field_offset(diff); // Points now at default_values |
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105 |
if (! orig_field->is_real_null()) |
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106 |
{
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107 |
char buff[MAX_FIELD_WIDTH], *pos; |
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108 |
String tmp(buff, sizeof(buff), charset), *res; |
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109 |
res= orig_field->val_str(&tmp); |
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110 |
pos= (char*) sql_strmake(res->ptr(), res->length()); |
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111 |
def= new Item_string(pos, res->length(), charset); |
|
112 |
}
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113 |
orig_field->move_field_offset(-diff); // Back to record[0] |
|
114 |
}
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|
115 |
}
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116 |
||
117 |
/**
|
|
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
118 |
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. |
119 |
*/
|
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
120 |
void CreateField::create_length_to_internal_length(void) |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
121 |
{
|
122 |
switch (sql_type) |
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123 |
{
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124 |
case DRIZZLE_TYPE_BLOB: |
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125 |
case DRIZZLE_TYPE_VARCHAR: |
|
126 |
length*= charset->mbmaxlen; |
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127 |
key_length= length; |
|
128 |
pack_length= calc_pack_length(sql_type, length); |
|
129 |
break; |
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130 |
case DRIZZLE_TYPE_ENUM: |
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131 |
/* Pack_length already calculated in ::init() */
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132 |
length*= charset->mbmaxlen; |
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133 |
key_length= pack_length; |
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134 |
break; |
|
135 |
case DRIZZLE_TYPE_NEWDECIMAL: |
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136 |
key_length= pack_length= |
|
137 |
my_decimal_get_binary_size(my_decimal_length_to_precision(length, |
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138 |
decimals, |
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139 |
flags & |
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140 |
UNSIGNED_FLAG), |
|
141 |
decimals); |
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142 |
break; |
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143 |
default: |
|
144 |
key_length= pack_length= calc_pack_length(sql_type, length); |
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145 |
break; |
|
146 |
}
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|
147 |
}
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148 |
||
149 |
/**
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|
150 |
Init for a tmp table field. To be extended if need be.
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|
151 |
*/
|
|
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
152 |
void CreateField::init_for_tmp_table(enum_field_types sql_type_arg, |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
153 |
uint32_t length_arg, uint32_t decimals_arg, |
154 |
bool maybe_null, bool is_unsigned) |
|
155 |
{
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|
156 |
field_name= ""; |
|
157 |
sql_type= sql_type_arg; |
|
158 |
char_length= length= length_arg;; |
|
159 |
unireg_check= Field::NONE; |
|
160 |
interval= 0; |
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161 |
charset= &my_charset_bin; |
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162 |
pack_flag= (FIELDFLAG_NUMBER | |
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163 |
((decimals_arg & FIELDFLAG_MAX_DEC) << FIELDFLAG_DEC_SHIFT) | |
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164 |
(maybe_null ? FIELDFLAG_MAYBE_NULL : 0) | |
|
165 |
(is_unsigned ? 0 : FIELDFLAG_DECIMAL)); |
|
166 |
}
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167 |
||
1052.2.7
by Nathan Williams
Merged trunk and resolved conflicts. |
168 |
bool CreateField::init(Session *, |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
169 |
char *fld_name, |
170 |
enum_field_types fld_type, |
|
171 |
char *fld_length, |
|
172 |
char *fld_decimals, |
|
173 |
uint32_t fld_type_modifier, |
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174 |
Item *fld_default_value, |
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175 |
Item *fld_on_update_value, |
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176 |
LEX_STRING *fld_comment, |
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177 |
char *fld_change, |
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178 |
List<String> *fld_interval_list, |
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179 |
const CHARSET_INFO * const fld_charset, |
|
180 |
uint32_t, |
|
181 |
enum column_format_type column_format_in) |
|
182 |
||
183 |
{
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|
184 |
uint32_t sign_len= 0; |
|
185 |
uint32_t allowed_type_modifier= 0; |
|
186 |
uint32_t max_field_charlength= MAX_FIELD_CHARLENGTH; |
|
187 |
||
188 |
field= 0; |
|
189 |
field_name= fld_name; |
|
190 |
def= fld_default_value; |
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191 |
flags= fld_type_modifier; |
|
192 |
flags|= (((uint32_t)column_format_in & COLUMN_FORMAT_MASK) << COLUMN_FORMAT_FLAGS); |
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193 |
unireg_check= (fld_type_modifier & AUTO_INCREMENT_FLAG ? |
|
194 |
Field::NEXT_NUMBER : Field::NONE); |
|
195 |
decimals= fld_decimals ? (uint32_t)atoi(fld_decimals) : 0; |
|
196 |
if (decimals >= NOT_FIXED_DEC) |
|
197 |
{
|
|
198 |
my_error(ER_TOO_BIG_SCALE, MYF(0), decimals, fld_name, |
|
199 |
NOT_FIXED_DEC-1); |
|
200 |
return(true); |
|
201 |
}
|
|
202 |
||
203 |
sql_type= fld_type; |
|
204 |
length= 0; |
|
205 |
change= fld_change; |
|
206 |
interval= 0; |
|
207 |
pack_length= key_length= 0; |
|
208 |
charset= fld_charset; |
|
1101.1.24
by Monty Taylor
Reverted my change to interval_list |
209 |
interval_list.empty(); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
210 |
|
211 |
comment= *fld_comment; |
|
212 |
||
213 |
/*
|
|
214 |
Set NO_DEFAULT_VALUE_FLAG if this field doesn't have a default value and
|
|
215 |
it is NOT NULL, not an AUTO_INCREMENT field and not a TIMESTAMP.
|
|
216 |
*/
|
|
217 |
if (!fld_default_value && !(fld_type_modifier & AUTO_INCREMENT_FLAG) && |
|
218 |
(fld_type_modifier & NOT_NULL_FLAG) && fld_type != DRIZZLE_TYPE_TIMESTAMP) |
|
219 |
flags|= NO_DEFAULT_VALUE_FLAG; |
|
220 |
||
221 |
if (fld_length && !(length= (uint32_t) atoi(fld_length))) |
|
222 |
fld_length= 0; /* purecov: inspected */ |
|
223 |
sign_len= fld_type_modifier & UNSIGNED_FLAG ? 0 : 1; |
|
224 |
||
225 |
switch (fld_type) |
|
226 |
{
|
|
227 |
case DRIZZLE_TYPE_TINY: |
|
228 |
if (!fld_length) |
|
229 |
length= MAX_TINYINT_WIDTH+sign_len; |
|
230 |
allowed_type_modifier= AUTO_INCREMENT_FLAG; |
|
231 |
break; |
|
232 |
case DRIZZLE_TYPE_LONG: |
|
233 |
if (!fld_length) |
|
234 |
length= MAX_INT_WIDTH+sign_len; |
|
235 |
allowed_type_modifier= AUTO_INCREMENT_FLAG; |
|
236 |
break; |
|
237 |
case DRIZZLE_TYPE_LONGLONG: |
|
238 |
if (!fld_length) |
|
239 |
length= MAX_BIGINT_WIDTH; |
|
240 |
allowed_type_modifier= AUTO_INCREMENT_FLAG; |
|
241 |
break; |
|
242 |
case DRIZZLE_TYPE_NULL: |
|
243 |
break; |
|
244 |
case DRIZZLE_TYPE_NEWDECIMAL: |
|
245 |
my_decimal_trim(&length, &decimals); |
|
246 |
if (length > DECIMAL_MAX_PRECISION) |
|
247 |
{
|
|
248 |
my_error(ER_TOO_BIG_PRECISION, MYF(0), length, fld_name, |
|
249 |
DECIMAL_MAX_PRECISION); |
|
250 |
return(true); |
|
251 |
}
|
|
252 |
if (length < decimals) |
|
253 |
{
|
|
254 |
my_error(ER_M_BIGGER_THAN_D, MYF(0), fld_name); |
|
255 |
return(true); |
|
256 |
}
|
|
257 |
length= my_decimal_precision_to_length(length, decimals, fld_type_modifier & UNSIGNED_FLAG); |
|
258 |
pack_length= my_decimal_get_binary_size(length, decimals); |
|
259 |
break; |
|
260 |
case DRIZZLE_TYPE_VARCHAR: |
|
261 |
/*
|
|
262 |
Long VARCHAR's are automaticly converted to blobs in mysql_prepare_table
|
|
263 |
if they don't have a default value
|
|
264 |
*/
|
|
265 |
max_field_charlength= MAX_FIELD_VARCHARLENGTH; |
|
266 |
break; |
|
267 |
case DRIZZLE_TYPE_BLOB: |
|
268 |
if (fld_default_value) |
|
269 |
{
|
|
270 |
/* Allow empty as default value. */
|
|
271 |
String str,*res; |
|
272 |
res= fld_default_value->val_str(&str); |
|
273 |
if (res->length()) |
|
274 |
{
|
|
275 |
my_error(ER_BLOB_CANT_HAVE_DEFAULT, MYF(0), fld_name); |
|
276 |
return(true); |
|
277 |
}
|
|
278 |
||
279 |
}
|
|
280 |
flags|= BLOB_FLAG; |
|
281 |
break; |
|
282 |
case DRIZZLE_TYPE_DOUBLE: |
|
283 |
allowed_type_modifier= AUTO_INCREMENT_FLAG; |
|
284 |
if (!fld_length && !fld_decimals) |
|
285 |
{
|
|
286 |
length= DBL_DIG+7; |
|
287 |
decimals= NOT_FIXED_DEC; |
|
288 |
}
|
|
289 |
if (length < decimals && |
|
290 |
decimals != NOT_FIXED_DEC) |
|
291 |
{
|
|
292 |
my_error(ER_M_BIGGER_THAN_D, MYF(0), fld_name); |
|
293 |
return(true); |
|
294 |
}
|
|
295 |
break; |
|
296 |
case DRIZZLE_TYPE_TIMESTAMP: |
|
297 |
if (!fld_length) |
|
298 |
{
|
|
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. |
299 |
length= drizzled::DateTime::MAX_STRING_LENGTH; |
300 |
}
|
|
301 |
||
302 |
/* This assert() should be correct due to absence of length
|
|
303 |
specifiers for timestamp. Previous manipulation also wasn't
|
|
304 |
ever called (from examining lcov)
|
|
305 |
*/
|
|
306 |
assert(length == (uint32_t)drizzled::DateTime::MAX_STRING_LENGTH); |
|
307 |
||
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
308 |
flags|= UNSIGNED_FLAG; |
309 |
if (fld_default_value) |
|
310 |
{
|
|
311 |
/* Grammar allows only NOW() value for ON UPDATE clause */
|
|
312 |
if (fld_default_value->type() == Item::FUNC_ITEM && |
|
313 |
((Item_func*)fld_default_value)->functype() == Item_func::NOW_FUNC) |
|
314 |
{
|
|
315 |
unireg_check= (fld_on_update_value ? Field::TIMESTAMP_DNUN_FIELD: |
|
316 |
Field::TIMESTAMP_DN_FIELD); |
|
317 |
/*
|
|
318 |
We don't need default value any longer moreover it is dangerous.
|
|
319 |
Everything handled by unireg_check further.
|
|
320 |
*/
|
|
321 |
def= 0; |
|
322 |
}
|
|
323 |
else
|
|
324 |
unireg_check= (fld_on_update_value ? Field::TIMESTAMP_UN_FIELD: |
|
325 |
Field::NONE); |
|
326 |
}
|
|
327 |
else
|
|
328 |
{
|
|
329 |
/*
|
|
330 |
If we have default TIMESTAMP NOT NULL column without explicit DEFAULT
|
|
331 |
or ON UPDATE values then for the sake of compatiblity we should treat
|
|
332 |
this column as having DEFAULT NOW() ON UPDATE NOW() (when we don't
|
|
333 |
have another TIMESTAMP column with auto-set option before this one)
|
|
334 |
or DEFAULT 0 (in other cases).
|
|
335 |
So here we are setting TIMESTAMP_OLD_FIELD only temporary, and will
|
|
336 |
replace this value by TIMESTAMP_DNUN_FIELD or NONE later when
|
|
337 |
information about all TIMESTAMP fields in table will be availiable.
|
|
338 |
||
339 |
If we have TIMESTAMP NULL column without explicit DEFAULT value
|
|
340 |
we treat it as having DEFAULT NULL attribute.
|
|
341 |
*/
|
|
342 |
unireg_check= (fld_on_update_value ? Field::TIMESTAMP_UN_FIELD : |
|
343 |
(flags & NOT_NULL_FLAG ? Field::TIMESTAMP_OLD_FIELD : |
|
344 |
Field::NONE)); |
|
345 |
}
|
|
346 |
break; |
|
347 |
case DRIZZLE_TYPE_DATE: |
|
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. |
348 |
length= drizzled::Date::MAX_STRING_LENGTH; |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
349 |
break; |
350 |
case DRIZZLE_TYPE_DATETIME: |
|
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. |
351 |
length= drizzled::DateTime::MAX_STRING_LENGTH; |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
352 |
break; |
353 |
case DRIZZLE_TYPE_ENUM: |
|
354 |
{
|
|
355 |
/* Should be safe. */
|
|
356 |
pack_length= get_enum_pack_length(fld_interval_list->elements); |
|
357 |
||
358 |
List_iterator<String> it(*fld_interval_list); |
|
359 |
String *tmp; |
|
360 |
while ((tmp= it++)) |
|
1101.1.24
by Monty Taylor
Reverted my change to interval_list |
361 |
interval_list.push_back(tmp); |
1055.2.10
by Jay Pipes
Moves Create_field implementation out into its own implementation file. |
362 |
length= 1; |
363 |
break; |
|
364 |
}
|
|
365 |
}
|
|
366 |
/* Remember the value of length */
|
|
367 |
char_length= length; |
|
368 |
||
369 |
if (!(flags & BLOB_FLAG) && |
|
370 |
((length > max_field_charlength && |
|
371 |
fld_type != DRIZZLE_TYPE_ENUM && |
|
372 |
(fld_type != DRIZZLE_TYPE_VARCHAR || fld_default_value)) || |
|
373 |
(!length && fld_type != DRIZZLE_TYPE_VARCHAR))) |
|
374 |
{
|
|
375 |
my_error((fld_type == DRIZZLE_TYPE_VARCHAR) ? ER_TOO_BIG_FIELDLENGTH : ER_TOO_BIG_DISPLAYWIDTH, |
|
376 |
MYF(0), |
|
377 |
fld_name, max_field_charlength); /* purecov: inspected */ |
|
378 |
return true; |
|
379 |
}
|
|
380 |
fld_type_modifier&= AUTO_INCREMENT_FLAG; |
|
381 |
if ((~allowed_type_modifier) & fld_type_modifier) |
|
382 |
{
|
|
383 |
my_error(ER_WRONG_FIELD_SPEC, MYF(0), fld_name); |
|
384 |
return true; |
|
385 |
}
|
|
386 |
||
387 |
return false; /* success */ |
|
388 |
}
|