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Viewing changes to codeigniter/system/database/drivers/postgre/postgre_forge.php

  • Committer: galaxyAbstractor
  • Date: 2013-04-10 15:49:32 UTC
  • mto: (19.1.5 lenasys)
  • mto: This revision was merged to the branch mainline in revision 23.
  • Revision ID: galaxyabstractor@gmail.com-20130410154932-4vizlzk0ar5gykvi
* Added an simple admin panel to the codeviewer-cmssy stuff
* Redesigned a bit like the mockups - still stuff to come
* Implemented the codeviewer + admin panel again using the Framework CodeIgniter instead 

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codeigniter/system/database/drivers/postgre/postgre_forge.php
 
1
<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 
2
/**
 
3
 * CodeIgniter
 
4
 *
 
5
 * An open source application development framework for PHP 5.1.6 or newer
 
6
 *
 
7
 * @package             CodeIgniter
 
8
 * @author              ExpressionEngine Dev Team
 
9
 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
 
10
 * @license             http://codeigniter.com/user_guide/license.html
 
11
 * @link                http://codeigniter.com
 
12
 * @since               Version 1.0
 
13
 * @filesource
 
14
 */
 
15
 
 
16
// ------------------------------------------------------------------------
 
17
 
 
18
/**
 
19
 * Postgre Forge Class
 
20
 *
 
21
 * @category    Database
 
22
 * @author              ExpressionEngine Dev Team
 
23
 * @link                http://codeigniter.com/user_guide/database/
 
24
 */
 
25
class CI_DB_postgre_forge extends CI_DB_forge {
 
26
 
 
27
        /**
 
28
         * Create database
 
29
         *
 
30
         * @access      private
 
31
         * @param       string  the database name
 
32
         * @return      bool
 
33
         */
 
34
        function _create_database($name)
 
35
        {
 
36
                return "CREATE DATABASE ".$name;
 
37
        }
 
38
 
 
39
        // --------------------------------------------------------------------
 
40
 
 
41
        /**
 
42
         * Drop database
 
43
         *
 
44
         * @access      private
 
45
         * @param       string  the database name
 
46
         * @return      bool
 
47
         */
 
48
        function _drop_database($name)
 
49
        {
 
50
                return "DROP DATABASE ".$name;
 
51
        }
 
52
 
 
53
        // --------------------------------------------------------------------
 
54
 
 
55
        /**
 
56
         * Create Table
 
57
         *
 
58
         * @access      private
 
59
         * @param       string  the table name
 
60
         * @param       array   the fields
 
61
         * @param       mixed   primary key(s)
 
62
         * @param       mixed   key(s)
 
63
         * @param       boolean should 'IF NOT EXISTS' be added to the SQL
 
64
         * @return      bool
 
65
         */
 
66
        function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
 
67
        {
 
68
                $sql = 'CREATE TABLE ';
 
69
 
 
70
                if ($if_not_exists === TRUE)
 
71
                {
 
72
                        if ($this->db->table_exists($table))
 
73
                        {
 
74
                                return "SELECT * FROM $table"; // Needs to return innocous but valid SQL statement
 
75
                        }
 
76
                }
 
77
 
 
78
                $sql .= $this->db->_escape_identifiers($table)." (";
 
79
                $current_field_count = 0;
 
80
 
 
81
                foreach ($fields as $field=>$attributes)
 
82
                {
 
83
                        // Numeric field names aren't allowed in databases, so if the key is
 
84
                        // numeric, we know it was assigned by PHP and the developer manually
 
85
                        // entered the field information, so we'll simply add it to the list
 
86
                        if (is_numeric($field))
 
87
                        {
 
88
                                $sql .= "\n\t$attributes";
 
89
                        }
 
90
                        else
 
91
                        {
 
92
                                $attributes = array_change_key_case($attributes, CASE_UPPER);
 
93
 
 
94
                                $sql .= "\n\t".$this->db->_protect_identifiers($field);
 
95
 
 
96
                                $is_unsigned = (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE);
 
97
 
 
98
                                // Convert datatypes to be PostgreSQL-compatible
 
99
                                switch (strtoupper($attributes['TYPE']))
 
100
                                {
 
101
                                        case 'TINYINT':
 
102
                                                $attributes['TYPE'] = 'SMALLINT';
 
103
                                                break;
 
104
                                        case 'SMALLINT':
 
105
                                                $attributes['TYPE'] = ($is_unsigned) ? 'INTEGER' : 'SMALLINT';
 
106
                                                break;
 
107
                                        case 'MEDIUMINT':
 
108
                                                $attributes['TYPE'] = 'INTEGER';
 
109
                                                break;
 
110
                                        case 'INT':
 
111
                                                $attributes['TYPE'] = ($is_unsigned) ? 'BIGINT' : 'INTEGER';
 
112
                                                break;
 
113
                                        case 'BIGINT':
 
114
                                                $attributes['TYPE'] = ($is_unsigned) ? 'NUMERIC' : 'BIGINT';
 
115
                                                break;
 
116
                                        case 'DOUBLE':
 
117
                                                $attributes['TYPE'] = 'DOUBLE PRECISION';
 
118
                                                break;
 
119
                                        case 'DATETIME':
 
120
                                                $attributes['TYPE'] = 'TIMESTAMP';
 
121
                                                break;
 
122
                                        case 'LONGTEXT':
 
123
                                                $attributes['TYPE'] = 'TEXT';
 
124
                                                break;
 
125
                                        case 'BLOB':
 
126
                                                $attributes['TYPE'] = 'BYTEA';
 
127
                                                break;
 
128
                                }
 
129
 
 
130
                                // If this is an auto-incrementing primary key, use the serial data type instead
 
131
                                if (in_array($field, $primary_keys) && array_key_exists('AUTO_INCREMENT', $attributes) 
 
132
                                        && $attributes['AUTO_INCREMENT'] === TRUE)
 
133
                                {
 
134
                                        $sql .= ' SERIAL';
 
135
                                }
 
136
                                else
 
137
                                {
 
138
                                        $sql .=  ' '.$attributes['TYPE'];
 
139
                                }
 
140
 
 
141
                                // Modified to prevent constraints with integer data types
 
142
                                if (array_key_exists('CONSTRAINT', $attributes) && strpos($attributes['TYPE'], 'INT') === false)
 
143
                                {
 
144
                                        $sql .= '('.$attributes['CONSTRAINT'].')';
 
145
                                }
 
146
 
 
147
                                if (array_key_exists('DEFAULT', $attributes))
 
148
                                {
 
149
                                        $sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
 
150
                                }
 
151
 
 
152
                                if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
 
153
                                {
 
154
                                        $sql .= ' NULL';
 
155
                                }
 
156
                                else
 
157
                                {
 
158
                                        $sql .= ' NOT NULL';
 
159
                                }
 
160
 
 
161
                                // Added new attribute to create unqite fields. Also works with MySQL
 
162
                                if (array_key_exists('UNIQUE', $attributes) && $attributes['UNIQUE'] === TRUE)
 
163
                                {
 
164
                                        $sql .= ' UNIQUE';
 
165
                                }
 
166
                        }
 
167
 
 
168
                        // don't add a comma on the end of the last field
 
169
                        if (++$current_field_count < count($fields))
 
170
                        {
 
171
                                $sql .= ',';
 
172
                        }
 
173
                }
 
174
 
 
175
                if (count($primary_keys) > 0)
 
176
                {
 
177
                        // Something seems to break when passing an array to _protect_identifiers()
 
178
                        foreach ($primary_keys as $index => $key)
 
179
                        {
 
180
                                $primary_keys[$index] = $this->db->_protect_identifiers($key);
 
181
                        }
 
182
 
 
183
                        $sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";
 
184
                }
 
185
 
 
186
                $sql .= "\n);";
 
187
 
 
188
                if (is_array($keys) && count($keys) > 0)
 
189
                {
 
190
                        foreach ($keys as $key)
 
191
                        {
 
192
                                if (is_array($key))
 
193
                                {
 
194
                                        $key = $this->db->_protect_identifiers($key);
 
195
                                }
 
196
                                else
 
197
                                {
 
198
                                        $key = array($this->db->_protect_identifiers($key));
 
199
                                }
 
200
 
 
201
                                foreach ($key as $field)
 
202
                                {
 
203
                                        $sql .= "CREATE INDEX " . $table . "_" . str_replace(array('"', "'"), '', $field) . "_index ON $table ($field); ";
 
204
                                }
 
205
                        }
 
206
                }
 
207
 
 
208
                return $sql;
 
209
        }
 
210
 
 
211
        // --------------------------------------------------------------------
 
212
 
 
213
        /**
 
214
         * Drop Table
 
215
         *
 
216
         * @access    private
 
217
         * @return    bool
 
218
         */
 
219
        function _drop_table($table)
 
220
        {
 
221
                return "DROP TABLE IF EXISTS ".$this->db->_escape_identifiers($table)." CASCADE";
 
222
        }
 
223
 
 
224
        // --------------------------------------------------------------------
 
225
 
 
226
        /**
 
227
         * Alter table query
 
228
         *
 
229
         * Generates a platform-specific query so that a table can be altered
 
230
         * Called by add_column(), drop_column(), and column_alter(),
 
231
         *
 
232
         * @access      private
 
233
         * @param       string  the ALTER type (ADD, DROP, CHANGE)
 
234
         * @param       string  the column name
 
235
         * @param       string  the table name
 
236
         * @param       string  the column definition
 
237
         * @param       string  the default value
 
238
         * @param       boolean should 'NOT NULL' be added
 
239
         * @param       string  the field after which we should add the new field
 
240
         * @return      object
 
241
         */
 
242
        function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
 
243
        {
 
244
                $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name);
 
245
 
 
246
                // DROP has everything it needs now.
 
247
                if ($alter_type == 'DROP')
 
248
                {
 
249
                        return $sql;
 
250
                }
 
251
 
 
252
                $sql .= " $column_definition";
 
253
 
 
254
                if ($default_value != '')
 
255
                {
 
256
                        $sql .= " DEFAULT \"$default_value\"";
 
257
                }
 
258
 
 
259
                if ($null === NULL)
 
260
                {
 
261
                        $sql .= ' NULL';
 
262
                }
 
263
                else
 
264
                {
 
265
                        $sql .= ' NOT NULL';
 
266
                }
 
267
 
 
268
                if ($after_field != '')
 
269
                {
 
270
                        $sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
 
271
                }
 
272
 
 
273
                return $sql;
 
274
 
 
275
        }
 
276
 
 
277
        // --------------------------------------------------------------------
 
278
 
 
279
        /**
 
280
         * Rename a table
 
281
         *
 
282
         * Generates a platform-specific query so that a table can be renamed
 
283
         *
 
284
         * @access      private
 
285
         * @param       string  the old table name
 
286
         * @param       string  the new table name
 
287
         * @return      string
 
288
         */
 
289
        function _rename_table($table_name, $new_table_name)
 
290
        {
 
291
                $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name);
 
292
                return $sql;
 
293
        }
 
294
 
 
295
 
 
296
}
 
297
 
 
298
/* End of file postgre_forge.php */
 
299
/* Location: ./system/database/drivers/postgre/postgre_forge.php */
 
 
b'\\ No newline at end of file'