/public/sspdir/app/cake/libs/model/datasources/dbo/dbo_mysql.php
PHP | 556 lines | 332 code | 28 blank | 196 comment | 87 complexity | c1835fe3cd4bf2b41290521dc636a9d6 MD5 | raw file
Possible License(s): GPL-3.0
- <?php
- /* SVN FILE: $Id: dbo_mysql.php 5118 2007-05-18 17:19:53Z phpnut $ */
- /**
- * MySQL layer for DBO
- *
- * Long description for file
- *
- * PHP versions 4 and 5
- *
- * CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
- * Copyright 2005-2007, Cake Software Foundation, Inc.
- * 1785 E. Sahara Avenue, Suite 490-204
- * Las Vegas, Nevada 89104
- *
- * Licensed under The MIT License
- * Redistributions of files must retain the above copyright notice.
- *
- * @filesource
- * @copyright Copyright 2005-2007, Cake Software Foundation, Inc.
- * @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
- * @package cake
- * @subpackage cake.cake.libs.model.datasources.dbo
- * @since CakePHP(tm) v 0.10.5.1790
- * @version $Revision: 5118 $
- * @modifiedby $LastChangedBy: phpnut $
- * @lastmodified $Date: 2007-05-18 12:19:53 -0500 (Fri, 18 May 2007) $
- * @license http://www.opensource.org/licenses/mit-license.php The MIT License
- */
- /**
- * Short description for class.
- *
- * Long description for class
- *
- * @package cake
- * @subpackage cake.cake.libs.model.datasources.dbo
- */
- class DboMysql extends DboSource {
- /**
- * Enter description here...
- *
- * @var unknown_type
- */
- var $description = "MySQL DBO Driver";
- /**
- * Enter description here...
- *
- * @var unknown_type
- */
- var $startQuote = "`";
- /**
- * Enter description here...
- *
- * @var unknown_type
- */
- var $endQuote = "`";
- /**
- * Base configuration settings for MySQL driver
- *
- * @var array
- */
- var $_baseConfig = array(
- 'persistent' => true,
- 'host' => 'localhost',
- 'login' => 'root',
- 'password' => '',
- 'database' => 'cake',
- 'port' => '3306',
- 'connect' => 'mysql_pconnect'
- );
- /**
- * MySQL column definition
- *
- * @var array
- */
- var $columns = array(
- 'primary_key' => array('name' => 'int(11) DEFAULT NULL auto_increment'),
- 'string' => array('name' => 'varchar', 'limit' => '255'),
- 'text' => array('name' => 'text'),
- 'integer' => array('name' => 'int', 'limit' => '11', 'formatter' => 'intval'),
- 'float' => array('name' => 'float', 'formatter' => 'floatval'),
- 'datetime' => array('name' => 'datetime', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
- 'timestamp' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
- 'time' => array('name' => 'time', 'format' => 'H:i:s', 'formatter' => 'date'),
- 'date' => array('name' => 'date', 'format' => 'Y-m-d', 'formatter' => 'date'),
- 'binary' => array('name' => 'blob'),
- 'boolean' => array('name' => 'tinyint', 'limit' => '1')
- );
- /**
- * Connects to the database using options in the given configuration array.
- *
- * @return boolean True if the database could be connected, else false
- */
- function connect() {
- $config = $this->config;
- $connect = $config['connect'];
- $this->connected = false;
- if (!$config['persistent'] || $config['connect'] === 'mysql_connect') {
- $this->connection = mysql_connect($config['host'] . ':' . $config['port'], $config['login'], $config['password'], true);
- } else {
- $this->connection = $connect($config['host'], $config['login'], $config['password']);
- }
- if (mysql_select_db($config['database'], $this->connection)) {
- $this->connected = true;
- }
- if (isset($config['encoding']) && !empty($config['encoding'])) {
- $this->setEncoding($config['encoding']);
- }
- return $this->connected;
- }
- /**
- * Disconnects from database.
- *
- * @return boolean True if the database could be disconnected, else false
- */
- function disconnect() {
- @mysql_free_result($this->results);
- $this->connected = !@mysql_close($this->connection);
- return !$this->connected;
- }
- /**
- * Executes given SQL statement.
- *
- * @param string $sql SQL statement
- * @return resource Result resource identifier
- * @access protected
- */
- function _execute($sql) {
- return mysql_query($sql, $this->connection);
- }
- /**
- * Returns an array of sources (tables) in the database.
- *
- * @return array Array of tablenames in the database
- */
- function listSources() {
- $cache = parent::listSources();
- if ($cache != null) {
- return $cache;
- }
- $result = $this->_execute('SHOW TABLES FROM ' . $this->name($this->config['database']) . ';');
- if (!$result) {
- return array();
- } else {
- $tables = array();
- while ($line = mysql_fetch_array($result)) {
- $tables[] = $line[0];
- }
- parent::listSources($tables);
- return $tables;
- }
- }
- /**
- * Returns an array of the fields in given table name.
- *
- * @param string $tableName Name of database table to inspect
- * @return array Fields in table. Keys are name and type
- */
- function describe(&$model) {
- $cache = parent::describe($model);
- if ($cache != null) {
- return $cache;
- }
- $fields = false;
- $cols = $this->query('DESCRIBE ' . $this->fullTableName($model));
- foreach ($cols as $column) {
- $colKey = array_keys($column);
- if (isset($column[$colKey[0]]) && !isset($column[0])) {
- $column[0] = $column[$colKey[0]];
- }
- if (isset($column[0])) {
- $fields[] = array(
- 'name' => $column[0]['Field'],
- 'type' => $this->column($column[0]['Type']),
- 'null' => ($column[0]['Null'] == 'YES' ? true : false),
- 'default' => $column[0]['Default'],
- 'length' => $this->length($column[0]['Type'])
- );
- }
- }
- $this->__cacheDescription($this->fullTableName($model, false), $fields);
- return $fields;
- }
- /**
- * Returns a quoted and escaped string of $data for use in an SQL statement.
- *
- * @param string $data String to be prepared for use in an SQL statement
- * @param string $column The column into which this data will be inserted
- * @param boolean $safe Whether or not numeric data should be handled automagically if no column data is provided
- * @return string Quoted and escaped data
- */
- function value($data, $column = null, $safe = false) {
- $parent = parent::value($data, $column, $safe);
- if ($parent != null) {
- return $parent;
- }
- if ($data === null) {
- return 'NULL';
- }
- if($data === '') {
- return "''";
- }
- switch ($column) {
- case 'boolean':
- $data = $this->boolean((bool)$data);
- break;
- case 'integer' :
- case 'float' :
- case null :
- if(is_numeric($data)) {
- break;
- }
- default:
- $data = "'" . mysql_real_escape_string($data, $this->connection) . "'";
- break;
- }
- return $data;
- }
- /**
- * Begin a transaction
- *
- * @param unknown_type $model
- * @return boolean True on success, false on fail
- * (i.e. if the database/model does not support transactions).
- */
- function begin(&$model) {
- if (parent::begin($model)) {
- if ($this->execute('START TRANSACTION')) {
- $this->_transactionStarted = true;
- return true;
- }
- }
- return false;
- }
- /**
- * Commit a transaction
- *
- * @param unknown_type $model
- * @return boolean True on success, false on fail
- * (i.e. if the database/model does not support transactions,
- * or a transaction has not started).
- */
- function commit(&$model) {
- if (parent::commit($model)) {
- $this->_transactionStarted = false;
- return $this->execute('COMMIT');
- }
- return false;
- }
- /**
- * Rollback a transaction
- *
- * @param unknown_type $model
- * @return boolean True on success, false on fail
- * (i.e. if the database/model does not support transactions,
- * or a transaction has not started).
- */
- function rollback(&$model) {
- if (parent::rollback($model)) {
- return $this->execute('ROLLBACK');
- }
- return false;
- }
- /**
- * Returns a formatted error message from previous database operation.
- *
- * @return string Error message with error number
- */
- function lastError() {
- if (mysql_errno($this->connection)) {
- return mysql_errno($this->connection).': '.mysql_error($this->connection);
- }
- return null;
- }
- /**
- * Returns number of affected rows in previous database operation. If no previous operation exists,
- * this returns false.
- *
- * @return int Number of affected rows
- */
- function lastAffected() {
- if ($this->_result) {
- return mysql_affected_rows($this->connection);
- }
- return null;
- }
- /**
- * Returns number of rows in previous resultset. If no previous resultset exists,
- * this returns false.
- *
- * @return int Number of rows in resultset
- */
- function lastNumRows() {
- if ($this->_result and is_resource($this->_result)) {
- return @mysql_num_rows($this->_result);
- }
- return null;
- }
- /**
- * Returns the ID generated from the previous INSERT operation.
- *
- * @param unknown_type $source
- * @return in
- */
- function lastInsertId($source = null) {
- $id = $this->fetchAll('SELECT LAST_INSERT_ID() AS insertID', false);
- if ($id !== false && !empty($id) && !empty($id[0]) && isset($id[0][0]['insertID'])) {
- return $id[0][0]['insertID'];
- }
- return null;
- }
- /**
- * Converts database-layer column types to basic types
- *
- * @param string $real Real database-layer column type (i.e. "varchar(255)")
- * @return string Abstract column type (i.e. "string")
- */
- function column($real) {
- if (is_array($real)) {
- $col = $real['name'];
- if (isset($real['limit'])) {
- $col .= '('.$real['limit'].')';
- }
- return $col;
- }
- $col = r(')', '', $real);
- $limit = $this->length($real);
- @list($col,$vals) = explode('(', $col);
- if (in_array($col, array('date', 'time', 'datetime', 'timestamp'))) {
- return $col;
- }
- if ($col == 'tinyint' && $limit == 1) {
- return 'boolean';
- }
- if (strpos($col, 'int') !== false) {
- return 'integer';
- }
- if (strpos($col, 'char') !== false || $col == 'tinytext') {
- return 'string';
- }
- if (strpos($col, 'text') !== false) {
- return 'text';
- }
- if (strpos($col, 'blob') !== false) {
- return 'binary';
- }
- if (in_array($col, array('float', 'double', 'decimal'))) {
- return 'float';
- }
- if (strpos($col, 'enum') !== false) {
- return "enum($vals)";
- }
- if ($col == 'boolean') {
- return $col;
- }
- return 'text';
- }
- /**
- * Gets the length of a database-native column description, or null if no length
- *
- * @param string $real Real database-layer column type (i.e. "varchar(255)")
- * @return int An integer representing the length of the column
- */
- function length($real) {
- $col = r(array(')', 'unsigned'), '', $real);
- $limit = null;
- if (strpos($col, '(') !== false) {
- list($col, $limit) = explode('(', $col);
- }
- if ($limit != null) {
- return intval($limit);
- }
- return null;
- }
- /**
- * Enter description here...
- *
- * @param unknown_type $results
- */
- function resultSet(&$results) {
- $this->results =& $results;
- $this->map = array();
- $num_fields = mysql_num_fields($results);
- $index = 0;
- $j = 0;
- while ($j < $num_fields) {
- $column = mysql_fetch_field($results,$j);
- if (!empty($column->table)) {
- $this->map[$index++] = array($column->table, $column->name);
- } else {
- $this->map[$index++] = array(0, $column->name);
- }
- $j++;
- }
- }
- /**
- * Fetches the next row from the current result set
- *
- * @return unknown
- */
- function fetchResult() {
- if ($row = mysql_fetch_row($this->results)) {
- $resultRow = array();
- $i = 0;
- foreach ($row as $index => $field) {
- list($table, $column) = $this->map[$index];
- $resultRow[$table][$column] = $row[$index];
- $i++;
- }
- return $resultRow;
- } else {
- return false;
- }
- }
- /**
- * Sets the database encoding
- *
- * @param string $enc Database encoding
- * @return void
- */
- function setEncoding($enc) {
- return $this->_execute('SET NAMES ' . $enc) != false;
- }
- /**
- * Gets the database encoding
- *
- * @return string The database encoding
- */
- function getEncoding() {
- return mysql_client_encoding($this->connection);
- }
- /**
- * Generate a MySQL schema for the given Schema object
- *
- * @param object $schema An instance of a subclass of CakeSchema
- * @param string $table Optional. If specified only the table name given will be generated.
- * Otherwise, all tables defined in the schema are generated.
- * @return string
- */
- function generateSchema($schema, $table = null) {
- if (!is_a($schema, 'CakeSchema')) {
- trigger_error(__('Invalid schema object', true), E_USER_WARNING);
- return null;
- }
- $out = '';
- foreach ($schema->tables as $curTable => $columns) {
- if (empty($table) || $table == $curTable) {
- $out .= 'CREATE TABLE ' . $this->fullTableName($curTable) . " (\n";
- $colList = array();
- $primary = null;
- foreach ($columns as $col) {
- if (isset($col['key']) && $col['key'] == 'primary') {
- $primary = $col;
- }
- $colList[] = $this->generateColumnSchema($col);
- }
- if (empty($primary)) {
- $primary = array('id', 'integer', 'key' => 'primary');
- array_unshift($colList, $this->generateColumnSchema($primary));
- }
- $colList[] = 'PRIMARY KEY (' . $this->name($primary[0]) . ')';
- $out .= "\t" . join(",\n\t", $colList) . "\n);\n\n";
- }
- }
- return $out;
- }
- /**
- * Generate a MySQL-native column schema string
- *
- * @param array $column An array structured like the following: array('name', 'type'[, options]),
- * where options can be 'default', 'length', or 'key'.
- * @return string
- */
- function generateColumnSchema($column) {
- $name = $type = null;
- $column = am(array('null' => true), $column);
- list($name, $type) = $column;
- if (empty($name) || empty($type)) {
- trigger_error('Column name or type not defined in schema', E_USER_WARNING);
- return null;
- }
- if (!isset($this->columns[$type])) {
- trigger_error("Column type {$type} does not exist", E_USER_WARNING);
- return null;
- }
- $real = $this->columns[$type];
- $out = $this->name($name) . ' ' . $real['name'];
- if (isset($real['limit']) || isset($real['length']) || isset($column['limit']) || isset($column['length'])) {
- if (isset($column['length'])) {
- $length = $column['length'];
- } elseif (isset($column['limit'])) {
- $length = $column['limit'];
- } elseif (isset($real['length'])) {
- $length = $real['length'];
- } else {
- $length = $real['limit'];
- }
- $out .= '(' . $length . ')';
- }
- if (isset($column['key']) && $column['key'] == 'primary') {
- $out .= ' NOT NULL AUTO_INCREMENT';
- } elseif (isset($column['default'])) {
- $out .= ' DEFAULT ' . $this->value($column['default'], $type);
- } elseif (isset($column['null']) && $column['null'] == true) {
- $out .= ' DEFAULT NULL';
- } elseif (isset($column['default']) && isset($column['null']) && $column['null'] == false) {
- $out .= ' DEFAULT ' . $this->value($column['default'], $type) . ' NOT NULL';
- } elseif (isset($column['null']) && $column['null'] == false) {
- $out .= ' NOT NULL';
- }
- return $out;
- }
- /**
- * Enter description here...
- *
- * @param unknown_type $schema
- * @return unknown
- */
- function buildSchemaQuery($schema) {
- $search = array('{AUTOINCREMENT}', '{PRIMARY}', '{UNSIGNED}', '{FULLTEXT}',
- '{FULLTEXT_MYSQL}', '{BOOLEAN}', '{UTF_8}');
- $replace = array('int(11) not null auto_increment', 'primary key', 'unsigned',
- 'FULLTEXT', 'FULLTEXT', 'enum (\'true\', \'false\') NOT NULL default \'true\'',
- '/*!40100 CHARACTER SET utf8 COLLATE utf8_unicode_ci */');
- $query = trim(r($search, $replace, $schema));
- return $query;
- }
- }
- ?>