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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 | <?php/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- *//*# ***** BEGIN LICENSE BLOCK *****# This file is part of Plume Framework, a simple PHP Application Framework.# Copyright (C) 2001-2007 Loic d'Anterroches and contributors.## Plume Framework is free software; you can redistribute it and/or modify# it under the terms of the GNU Lesser General Public License as published by# the Free Software Foundation; either version 2.1 of the License, or# (at your option) any later version.## Plume Framework is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# GNU Lesser General Public License for more details.## You should have received a copy of the GNU Lesser General Public License# along with this program; if not, write to the Free Software# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA## ***** END LICENSE BLOCK ***** *//** * Generator of the schemas corresponding to a given model. * * This class is for PostgreSQL, you can create a class on the same * model for another database engine. */class Pluf_DB_Schema_PostgreSQL{ /** * Mapping of the fields. */ public $mappings = array( 'varchar' => 'character varying', 'sequence' => 'serial', 'boolean' => 'boolean', 'date' => 'date', 'datetime' => 'timestamp', 'file' => 'character varying', 'manytomany' => null, 'foreignkey' => 'integer', 'text' => 'text', 'html' => 'text', 'time' => 'time', 'integer' => 'integer', 'email' => 'character varying', 'password' => 'character varying', 'float' => 'real', 'blob' => 'bytea', ); public $defaults = array( 'varchar' => "''", 'sequence' => null, 'boolean' => 'FALSE', 'date' => "'0001-01-01'", 'datetime' => "'0001-01-01 00:00:00'", 'file' => "''", 'manytomany' => null, 'foreignkey' => 0, 'text' => "''", 'html' => "''", 'time' => "'00:00:00'", 'integer' => 0, 'email' => "''", 'password' => "''", 'float' => 0.0, 'blob' => "''", ); private $con = null; function __construct($con) { $this->con = $con; } /** * Get the SQL to generate the tables of the given model. * * @param Object Model * @return array Array of SQL strings ready to execute. */ function getSqlCreate($model) { $tables = array(); $cols = $model->_a['cols']; $manytomany = array(); $query = 'CREATE TABLE '.$this->con->pfx.$model->_a['table'].' ('; $sql_col = array(); foreach ($cols as $col => $val) { $field = new $val['type'](); if ($field->type != 'manytomany') { $sql = $this->con->qn($col).' '; $sql .= $this->mappings[$field->type]; if (empty($val['is_null'])) { $sql .= ' NOT NULL'; } if (isset($val['default'])) { $sql .= ' default '; $sql .= $model->_toDb($val['default'], $col); } elseif ($field->type != 'sequence') { $sql .= ' default '.$this->defaults[$field->type]; } $sql_col[] = $sql; } else { $manytomany[] = $col; } } $sql_col[] = 'CONSTRAINT '.$this->con->pfx.$model->_a['table'].'_pkey PRIMARY KEY (id)'; $query = $query."\n".implode(",\n", $sql_col)."\n".');'; $tables[$this->con->pfx.$model->_a['table']] = $query; // Now for the many to many // FIXME add index on the second column foreach ($manytomany as $many) { $omodel = new $cols[$many]['model'](); $hay = array(strtolower($model->_a['model']), strtolower($omodel->_a['model'])); sort($hay); $table = $hay[0].'_'.$hay[1].'_assoc'; $sql = 'CREATE TABLE '.$this->con->pfx.$table.' ('; $sql .= "\n".strtolower($model->_a['model']).'_id '.$this->mappings['foreignkey'].' default 0,'; $sql .= "\n".strtolower($omodel->_a['model']).'_id '.$this->mappings['foreignkey'].' default 0,'; $sql .= "\n".'CONSTRAINT '.$this->getShortenedIdentifierName($this->con->pfx.$table.'_pkey').' PRIMARY KEY ('.strtolower($model->_a['model']).'_id, '.strtolower($omodel->_a['model']).'_id)'; $sql .= "\n".');'; $tables[$this->con->pfx.$table] = $sql; } return $tables; } /** * Get the SQL to generate the indexes of the given model. * * @param Object Model * @return array Array of SQL strings ready to execute. */ function getSqlIndexes($model) { $index = array(); foreach ($model->_a['idx'] as $idx => $val) { if (!isset($val['col'])) { $val['col'] = $idx; } if ($val['type'] == 'unique') { $unique = 'UNIQUE '; } else { $unique = ''; } $index[$this->con->pfx.$model->_a['table'].'_'.$idx] = sprintf('CREATE '.$unique.'INDEX %s ON %s (%s);', $this->con->pfx.$model->_a['table'].'_'.$idx, $this->con->pfx.$model->_a['table'], Pluf_DB_Schema::quoteColumn($val['col'], $this->con) ); } foreach ($model->_a['cols'] as $col => $val) { $field = new $val['type'](); if (isset($val['unique']) and $val['unique'] == true) { $index[$this->con->pfx.$model->_a['table'].'_'.$col.'_unique'] = sprintf('CREATE UNIQUE INDEX %s ON %s (%s);', $this->con->pfx.$model->_a['table'].'_'.$col.'_unique_idx', $this->con->pfx.$model->_a['table'], Pluf_DB_Schema::quoteColumn($col, $this->con) ); } } return $index; } /** * All identifiers in Postgres must not exceed 64 characters in length. * * @param string * @return string */ function getShortenedIdentifierName($name) { if (strlen($name) <= 64) { return $name; } return substr($name, 0, 55).'_'.substr(md5($name), 0, 8); } /** * Get the SQL to create the constraints for the given model * * @param Object Model * @return array Array of SQL strings ready to execute. */ function getSqlCreateConstraints($model) { $table = $this->con->pfx.$model->_a['table']; $constraints = array(); $alter_tbl = 'ALTER TABLE '.$table; $cols = $model->_a['cols']; $manytomany = array(); foreach ($cols as $col => $val) { $field = new $val['type'](); // remember these for later if ($field->type == 'manytomany') { $manytomany[] = $col; } if ($field->type == 'foreignkey') { // Add the foreignkey constraints $referto = new $val['model'](); $constraints[] = $alter_tbl.' ADD CONSTRAINT '.$this->getShortenedIdentifierName($table.'_'.$col.'_fkey').' FOREIGN KEY ('.$this->con->qn($col).') REFERENCES '.$this->con->pfx.$referto->_a['table'].' (id) MATCH SIMPLE ON UPDATE NO ACTION ON DELETE NO ACTION'; } } // Now for the many to many foreach ($manytomany as $many) { $omodel = new $cols[$many]['model'](); $hay = array(strtolower($model->_a['model']), strtolower($omodel->_a['model'])); sort($hay); $table = $this->con->pfx.$hay[0].'_'.$hay[1].'_assoc'; $alter_tbl = 'ALTER TABLE '.$table; $constraints[] = $alter_tbl.' ADD CONSTRAINT '.$this->getShortenedIdentifierName($table.'_fkey1').' FOREIGN KEY ('.strtolower($model->_a['model']).'_id) REFERENCES '.$this->con->pfx.$model->_a['table'].' (id) MATCH SIMPLE ON UPDATE NO ACTION ON DELETE NO ACTION'; $constraints[] = $alter_tbl.' ADD CONSTRAINT '.$this->getShortenedIdentifierName($table.'_fkey2').' FOREIGN KEY ('.strtolower($omodel->_a['model']).'_id) REFERENCES '.$this->con->pfx.$omodel->_a['table'].' (id) MATCH SIMPLE ON UPDATE NO ACTION ON DELETE NO ACTION'; } return $constraints; } /** * Get the SQL to drop the tables corresponding to the model. * * @param Object Model * @return string SQL string ready to execute. */ function getSqlDelete($model) { $cols = $model->_a['cols']; $manytomany = array(); $sql = array(); $sql[] = 'DROP TABLE IF EXISTS '.$this->con->pfx.$model->_a['table'].' CASCADE'; foreach ($cols as $col => $val) { $field = new $val['type'](); if ($field->type == 'manytomany') { $manytomany[] = $col; } } //Now for the many to many foreach ($manytomany as $many) { $omodel = new $cols[$many]['model'](); $hay = array(strtolower($model->_a['model']), strtolower($omodel->_a['model'])); sort($hay); $table = $hay[0].'_'.$hay[1].'_assoc'; $sql[] = 'DROP TABLE IF EXISTS '.$this->con->pfx.$table.' CASCADE'; } return $sql; } /** * Get the SQL to drop the constraints for the given model * * @param Object Model * @return array Array of SQL strings ready to execute. */ function getSqlDeleteConstraints($model) { $table = $this->con->pfx.$model->_a['table']; $constraints = array(); $alter_tbl = 'ALTER TABLE '.$table; $cols = $model->_a['cols']; $manytomany = array(); foreach ($cols as $col => $val) { $field = new $val['type'](); // remember these for later if ($field->type == 'manytomany') { $manytomany[] = $col; } if ($field->type == 'foreignkey') { // Add the foreignkey constraints $referto = new $val['model'](); $constraints[] = $alter_tbl.' DROP CONSTRAINT '.$this->getShortenedIdentifierName($table.'_'.$col.'_fkey'); } } // Now for the many to many foreach ($manytomany as $many) { $omodel = new $cols[$many]['model'](); $hay = array(strtolower($model->_a['model']), strtolower($omodel->_a['model'])); sort($hay); $table = $this->con->pfx.$hay[0].'_'.$hay[1].'_assoc'; $alter_tbl = 'ALTER TABLE '.$table; $constraints[] = $alter_tbl.' DROP CONSTRAINT '.$this->getShortenedIdentifierName($table.'_fkey1'); $constraints[] = $alter_tbl.' DROP CONSTRAINT '.$this->getShortenedIdentifierName($table.'_fkey2'); } return $constraints; }} |
