/www/cake/libs/model/datasources/dbo/dbo_odbc.php
PHP | 379 lines | 187 code | 40 blank | 152 comment | 38 complexity | e7367c3cc81f05e3e0c807732035ff63 MD5 | raw file
- <?php
- /* SVN FILE: $Id$ */
- /**
- * ODBC for DBO
- *
- * Long description for file
- *
- * PHP versions 4 and 5
- *
- * CakePHP(tm) : Rapid Development Framework (http://www.cakephp.org)
- * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
- *
- * Licensed under The MIT License
- * Redistributions of files must retain the above copyright notice.
- *
- * @filesource
- * @copyright Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
- * @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
- * @package cake
- * @subpackage cake.cake.libs.model.dbo
- * @since CakePHP(tm) v 0.10.5.1790
- * @version $Revision$
- * @modifiedby $LastChangedBy$
- * @lastmodified $Date$
- * @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 DboOdbc extends DboSource {
- /**
- * Driver description
- *
- * @var string
- */
- var $description = "ODBC DBO Driver";
- /**
- * Table/column starting quote
- *
- * @var string
- */
- var $startQuote = "`";
- /**
- * Table/column end quote
- *
- * @var string
- */
- var $endQuote = "`";
- /**
- * Driver base configuration
- *
- * @var array
- */
- var $_baseConfig = array(
- 'persistent' => true,
- 'login' => 'root',
- 'password' => '',
- 'database' => 'cake',
- 'connect' => 'odbc_pconnect'
- );
- /**
- * Enter description here...
- *
- * @var unknown_type
- */
- var $columns = 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'),
- // 'float' => array('name' => 'float'),
- // 'datetime' => array('name' => 'datetime', 'format' => 'Y-m-d h:i:s', 'formatter' => 'date'),
- // 'timestamp' => array('name' => 'datetime', '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 = $config['connect'];
- if (!$config['persistent']) {
- $connect = 'odbc_connect';
- }
- if (!function_exists($connect)) {
- die('no odbc?');
- }
- $this->connected = false;
- $this->connection = $connect($config['database'], $config['login'], $config['password'], SQL_CUR_USE_ODBC);
- if ($this->connection) {
- $this->connected = true;
- }
- return $this->connected;
- }
- /**
- * Disconnects from database.
- *
- * @return boolean True if the database could be disconnected, else false
- */
- function disconnect() {
- return @odbc_close($this->connection);
- }
- /**
- * Executes given SQL statement.
- *
- * @param string $sql SQL statement
- * @return resource Result resource identifier
- * @access protected
- */
- function _execute($sql) {
- switch ($sql) {
- case 'BEGIN':
- return odbc_autocommit($this->connection, false);
- case 'COMMIT':
- return odbc_commit($this->connection);
- case 'ROLLBACK':
- return odbc_rollback($this->connection);
- }
- // TODO: should flags be set? possible requirement: SQL_CURSOR_STATIC
- return odbc_exec($this->connection, $sql);
- }
- /**
- * 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;
- }
- $result = odbc_tables($this->connection);
- $tables = array();
- while (odbc_fetch_row($result)) {
- array_push($tables, odbc_result($result, 'TABLE_NAME'));
- }
- parent::listSources($tables);
- return $tables;
- }
- /**
- * Returns an array of the fields in given table name.
- *
- * @param Model $model Model object to describe
- * @return array Fields in table. Keys are name and type
- */
- function &describe(&$model) {
- $cache=parent::describe($model);
- if ($cache != null) {
- return $cache;
- }
- $fields = array();
- $sql = 'SELECT * FROM ' . $this->fullTableName($model);
- $result = odbc_exec($this->connection, $sql);
- $count = odbc_num_fields($result);
- for ($i = 1; $i <= $count; $i++) {
- $cols[$i - 1] = odbc_field_name($result, $i);
- }
- foreach ($cols as $column) {
- $type = odbc_field_type(odbc_exec($this->connection, 'SELECT ' . $column . ' FROM ' . $this->fullTableName($model)), 1);
- $fields[$column] = array('type' => $type);
- }
- $this->__cacheDescription($model->tablePrefix . $model->table, $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 $column The column into which this data will be inserted
- * @return string Quoted and escaped
- * @todo Add logic that formats/escapes data based on column type
- */
- function value($data, $column = null) {
- $parent=parent::value($data, $column);
- if ($parent != null) {
- return $parent;
- }
- if ($data === null) {
- return 'NULL';
- }
- if (!is_numeric($data)) {
- return "'" . $data . "'";
- }
- return $data;
- }
- /**
- * Returns a formatted error message from previous database operation.
- *
- * @return string Error message with error number
- */
- function lastError() {
- if ($error = odbc_errormsg($this->connection)) {
- return odbc_error($this->connection) . ': ' . $error;
- }
- return null;
- }
- /**
- * Returns number of affected rows in previous database operation. If no previous operation exists,
- * this returns false.
- *
- * @return integer Number of affected rows
- */
- function lastAffected() {
- if ($this->hasResult()) {
- return odbc_num_rows($this->_result);
- }
- return null;
- }
- /**
- * Returns number of rows in previous resultset. If no previous resultset exists,
- * this returns false.
- *
- * @return int Number of rows in resultset
- */
- function lastNumRows() {
- if ($this->hasResult()) {
- return odbc_num_rows($this->_result);
- }
- return null;
- }
- /**
- * Returns the ID generated from the previous INSERT operation.
- *
- * @param unknown_type $source
- * @return int
- */
- function lastInsertId($source = null) {
- $result = $this->fetchRow('SELECT @@IDENTITY');
- return $result[0];
- }
- /**
- * Enter description here...
- *
- * @param string $real Real database-layer column type (i.e. "varchar(255)")
- */
- function column($real) {
- if (is_array($real)) {
- $col=$real['name'];
- if (isset($real['limit'])) {
- $col .= '(' . $real['limit'] . ')';
- }
- return $col;
- }
- return $real;
- }
- /**
- * Enter description here...
- *
- * @param unknown_type $results
- */
- function resultSet(&$results) {
- $this->results =& $results;
- $num_fields = odbc_num_fields($results);
- $this->map = array();
- $index = 0;
- $j = 0;
- while ($j < $num_fields) {
- $column = odbc_field_name($results, $j+1);
- if (strpos($column, '_dot_') !== false) {
- list($table, $column) = explode('_dot_', $column);
- $this->map[$index++] = array($table, $column);
- } else {
- $this->map[$index++] = array(0, $column);
- }
- $j++;
- }
- }
- /**
- * Generates the fields list of an SQL query.
- *
- * @param Model $model
- * @param string $alias Alias tablename
- * @param mixed $fields
- * @return array
- */
- function fields(&$model, $alias = null, $fields = null, $quote = true) {
- if (empty($alias)) {
- $alias = $model->name;
- }
- if (!is_array($fields)) {
- if ($fields != null) {
- $fields = array_map('trim', explode(',', $fields));
- } else {
- foreach($model->tableToModel as $tableName => $modelName) {
- foreach($this->__descriptions[$model->tablePrefix .$tableName] as $field => $type) {
- $fields[] = $modelName .'.' .$field;
- }
- }
- }
- }
- $count = count($fields);
- if ($count >= 1 && $fields[0] != '*' && strpos($fields[0], 'COUNT(*)') === false) {
- for ($i = 0; $i < $count; $i++) {
- if (!preg_match('/^.+\\(.*\\)/', $fields[$i])) {
- $prepend = '';
- if (strpos($fields[$i], 'DISTINCT') !== false) {
- $prepend = 'DISTINCT ';
- $fields[$i] = trim(str_replace('DISTINCT', '', $fields[$i]));
- }
- if (strrpos($fields[$i], '.') === false) {
- $fields[$i] = $prepend . $this->name($alias) . '.' . $this->name($fields[$i]) . ' AS ' . $this->name($alias . '_dot_' . $fields[$i]);
- } else {
- $build = explode('.', $fields[$i]);
- $fields[$i] = $prepend . $this->name($build[0]) . '.' . $this->name($build[1]) . ' AS ' . $this->name($build[0] . '_dot_' . $build[1]);
- }
- }
- }
- }
- return $fields;
- }
- /**
- * Fetches the next row from the current result set
- *
- * @return unknown
- */
- function fetchResult() {
- if ($row = odbc_fetch_row($this->results)) {
- $resultRow = array();
- $numFields = odbc_num_fields($this->results);
- $i = 0;
- for($i = 0; $i < $numFields; $i++) {
- list($table, $column) = $this->map[$i];
- $resultRow[$table][$column] = odbc_result($this->results, $i + 1);
- }
- return $resultRow;
- }
- return false;
- }
- }
- ?>