mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 19:38:26 +00:00
601 lines
13 KiB
PHP
601 lines
13 KiB
PHP
<?php
|
|
/**
|
|
* DataSource base class
|
|
*
|
|
* PHP versions 4 and 5
|
|
*
|
|
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
|
|
* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
|
|
*
|
|
* Licensed under The MIT License
|
|
* Redistributions of files must retain the above copyright notice.
|
|
*
|
|
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
|
|
* @link http://cakephp.org CakePHP(tm) Project
|
|
* @package cake
|
|
* @subpackage cake.cake.libs.model.datasources
|
|
* @since CakePHP(tm) v 0.10.5.1790
|
|
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
|
|
*/
|
|
|
|
/**
|
|
* DataSource base class
|
|
*
|
|
* @package cake
|
|
* @subpackage cake.cake.libs.model.datasources
|
|
*/
|
|
class DataSource extends Object {
|
|
|
|
/**
|
|
* Are we connected to the DataSource?
|
|
*
|
|
* @var boolean
|
|
* @access public
|
|
*/
|
|
var $connected = false;
|
|
|
|
/**
|
|
* Print full query debug info?
|
|
*
|
|
* @var boolean
|
|
* @access public
|
|
*/
|
|
var $fullDebug = false;
|
|
|
|
/**
|
|
* Error description of last query
|
|
*
|
|
* @var unknown_type
|
|
* @access public
|
|
*/
|
|
var $error = null;
|
|
|
|
/**
|
|
* String to hold how many rows were affected by the last SQL operation.
|
|
*
|
|
* @var string
|
|
* @access public
|
|
*/
|
|
var $affected = null;
|
|
|
|
/**
|
|
* Number of rows in current resultset
|
|
*
|
|
* @var int
|
|
* @access public
|
|
*/
|
|
var $numRows = null;
|
|
|
|
/**
|
|
* Time the last query took
|
|
*
|
|
* @var int
|
|
* @access public
|
|
*/
|
|
var $took = null;
|
|
|
|
/**
|
|
* The starting character that this DataSource uses for quoted identifiers.
|
|
*
|
|
* @var string
|
|
* @access public
|
|
*/
|
|
var $startQuote = null;
|
|
|
|
/**
|
|
* The ending character that this DataSource uses for quoted identifiers.
|
|
*
|
|
* @var string
|
|
* @access public
|
|
*/
|
|
var $endQuote = null;
|
|
|
|
/**
|
|
* Result
|
|
*
|
|
* @var array
|
|
* @access protected
|
|
*/
|
|
var $_result = null;
|
|
|
|
/**
|
|
* Queries count.
|
|
*
|
|
* @var int
|
|
* @access protected
|
|
*/
|
|
var $_queriesCnt = 0;
|
|
|
|
/**
|
|
* Total duration of all queries.
|
|
*
|
|
* @var unknown_type
|
|
* @access protected
|
|
*/
|
|
var $_queriesTime = null;
|
|
|
|
/**
|
|
* Log of queries executed by this DataSource
|
|
*
|
|
* @var unknown_type
|
|
* @access protected
|
|
*/
|
|
var $_queriesLog = array();
|
|
|
|
/**
|
|
* Maximum number of items in query log
|
|
*
|
|
* This is to prevent query log taking over too much memory.
|
|
*
|
|
* @var int Maximum number of queries in the queries log.
|
|
* @access protected
|
|
*/
|
|
var $_queriesLogMax = 200;
|
|
|
|
/**
|
|
* Caches serialzed results of executed queries
|
|
*
|
|
* @var array Maximum number of queries in the queries log.
|
|
* @access protected
|
|
*/
|
|
var $_queryCache = array();
|
|
|
|
/**
|
|
* The default configuration of a specific DataSource
|
|
*
|
|
* @var array
|
|
* @access protected
|
|
*/
|
|
var $_baseConfig = array();
|
|
|
|
/**
|
|
* Holds references to descriptions loaded by the DataSource
|
|
*
|
|
* @var array
|
|
* @access private
|
|
*/
|
|
var $__descriptions = array();
|
|
|
|
/**
|
|
* Holds a list of sources (tables) contained in the DataSource
|
|
*
|
|
* @var array
|
|
* @access protected
|
|
*/
|
|
var $_sources = null;
|
|
|
|
/**
|
|
* A reference to the physical connection of this DataSource
|
|
*
|
|
* @var array
|
|
* @access public
|
|
*/
|
|
var $connection = null;
|
|
|
|
/**
|
|
* The DataSource configuration
|
|
*
|
|
* @var array
|
|
* @access public
|
|
*/
|
|
var $config = array();
|
|
|
|
/**
|
|
* The DataSource configuration key name
|
|
*
|
|
* @var string
|
|
* @access public
|
|
*/
|
|
var $configKeyName = null;
|
|
|
|
/**
|
|
* Whether or not this DataSource is in the middle of a transaction
|
|
*
|
|
* @var boolean
|
|
* @access protected
|
|
*/
|
|
var $_transactionStarted = false;
|
|
|
|
/**
|
|
* Whether or not source data like available tables and schema descriptions
|
|
* should be cached
|
|
*
|
|
* @var boolean
|
|
* @access public
|
|
*/
|
|
var $cacheSources = true;
|
|
|
|
/**
|
|
* Constructor.
|
|
*
|
|
* @param array $config Array of configuration information for the datasource.
|
|
* @return void.
|
|
*/
|
|
function __construct($config = array()) {
|
|
parent::__construct();
|
|
$this->setConfig($config);
|
|
}
|
|
|
|
/**
|
|
* Caches/returns cached results for child instances
|
|
*
|
|
* @param mixed $data
|
|
* @return array Array of sources available in this datasource.
|
|
* @access public
|
|
*/
|
|
function listSources($data = null) {
|
|
if ($this->cacheSources === false) {
|
|
return null;
|
|
}
|
|
|
|
if ($this->_sources !== null) {
|
|
return $this->_sources;
|
|
}
|
|
|
|
$key = ConnectionManager::getSourceName($this) . '_' . $this->config['database'] . '_list';
|
|
$key = preg_replace('/[^A-Za-z0-9_\-.+]/', '_', $key);
|
|
$sources = Cache::read($key, '_cake_model_');
|
|
|
|
if (empty($sources)) {
|
|
$sources = $data;
|
|
Cache::write($key, $data, '_cake_model_');
|
|
}
|
|
|
|
$this->_sources = $sources;
|
|
return $sources;
|
|
}
|
|
|
|
/**
|
|
* Convenience method for DboSource::listSources(). Returns source names in lowercase.
|
|
*
|
|
* @param boolean $reset Whether or not the source list should be reset.
|
|
* @return array Array of sources available in this datasource
|
|
* @access public
|
|
*/
|
|
function sources($reset = false) {
|
|
if ($reset === true) {
|
|
$this->_sources = null;
|
|
}
|
|
return array_map('strtolower', $this->listSources());
|
|
}
|
|
|
|
/**
|
|
* Returns a Model description (metadata) or null if none found.
|
|
*
|
|
* @param Model $model
|
|
* @return array Array of Metadata for the $model
|
|
* @access public
|
|
*/
|
|
function describe(&$model) {
|
|
if ($this->cacheSources === false) {
|
|
return null;
|
|
}
|
|
$table = $model->tablePrefix . $model->table;
|
|
|
|
if (isset($this->__descriptions[$table])) {
|
|
return $this->__descriptions[$table];
|
|
}
|
|
$cache = $this->__cacheDescription($table);
|
|
|
|
if ($cache !== null) {
|
|
$this->__descriptions[$table] =& $cache;
|
|
return $cache;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Begin a transaction
|
|
*
|
|
* @return boolean Returns true if a transaction is not in progress
|
|
* @access public
|
|
*/
|
|
function begin(&$model) {
|
|
return !$this->_transactionStarted;
|
|
}
|
|
|
|
/**
|
|
* Commit a transaction
|
|
*
|
|
* @return boolean Returns true if a transaction is in progress
|
|
* @access public
|
|
*/
|
|
function commit(&$model) {
|
|
return $this->_transactionStarted;
|
|
}
|
|
|
|
/**
|
|
* Rollback a transaction
|
|
*
|
|
* @return boolean Returns true if a transaction is in progress
|
|
* @access public
|
|
*/
|
|
function rollback(&$model) {
|
|
return $this->_transactionStarted;
|
|
}
|
|
|
|
/**
|
|
* Converts column types to basic types
|
|
*
|
|
* @param string $real Real column type (i.e. "varchar(255)")
|
|
* @return string Abstract column type (i.e. "string")
|
|
* @access public
|
|
*/
|
|
function column($real) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Used to create new records. The "C" CRUD.
|
|
*
|
|
* To-be-overridden in subclasses.
|
|
*
|
|
* @param Model $model The Model to be created.
|
|
* @param array $fields An Array of fields to be saved.
|
|
* @param array $values An Array of values to save.
|
|
* @return boolean success
|
|
* @access public
|
|
*/
|
|
function create(&$model, $fields = null, $values = null) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Used to read records from the Datasource. The "R" in CRUD
|
|
*
|
|
* To-be-overridden in subclasses.
|
|
*
|
|
* @param Model $model The model being read.
|
|
* @param array $queryData An array of query data used to find the data you want
|
|
* @return mixed
|
|
* @access public
|
|
*/
|
|
function read(&$model, $queryData = array()) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Update a record(s) in the datasource.
|
|
*
|
|
* To-be-overridden in subclasses.
|
|
*
|
|
* @param Model $model Instance of the model class being updated
|
|
* @param array $fields Array of fields to be updated
|
|
* @param array $values Array of values to be update $fields to.
|
|
* @return boolean Success
|
|
* @access public
|
|
*/
|
|
function update(&$model, $fields = null, $values = null) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Delete a record(s) in the datasource.
|
|
*
|
|
* To-be-overridden in subclasses.
|
|
*
|
|
* @param Model $model The model class having record(s) deleted
|
|
* @param mixed $id Primary key of the model
|
|
* @access public
|
|
*/
|
|
function delete(&$model, $id = null) {
|
|
if ($id == null) {
|
|
$id = $model->id;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the ID generated from the previous INSERT operation.
|
|
*
|
|
* @param unknown_type $source
|
|
* @return mixed Last ID key generated in previous INSERT
|
|
* @access public
|
|
*/
|
|
function lastInsertId($source = null) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of rows returned by last operation.
|
|
*
|
|
* @param unknown_type $source
|
|
* @return integer Number of rows returned by last operation
|
|
* @access public
|
|
*/
|
|
function lastNumRows($source = null) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of rows affected by last query.
|
|
*
|
|
* @param unknown_type $source
|
|
* @return integer Number of rows affected by last query.
|
|
* @access public
|
|
*/
|
|
function lastAffected($source = null) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check whether the conditions for the Datasource being available
|
|
* are satisfied. Often used from connect() to check for support
|
|
* before establishing a connection.
|
|
*
|
|
* @return boolean Whether or not the Datasources conditions for use are met.
|
|
* @access public
|
|
*/
|
|
function enabled() {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns true if the DataSource supports the given interface (method)
|
|
*
|
|
* @param string $interface The name of the interface (method)
|
|
* @return boolean True on success
|
|
* @access public
|
|
*/
|
|
function isInterfaceSupported($interface) {
|
|
static $methods = false;
|
|
if ($methods === false) {
|
|
$methods = array_map('strtolower', get_class_methods($this));
|
|
}
|
|
return in_array(strtolower($interface), $methods);
|
|
}
|
|
|
|
/**
|
|
* Sets the configuration for the DataSource.
|
|
* Merges the $config information with the _baseConfig and the existing $config property.
|
|
*
|
|
* @param array $config The configuration array
|
|
* @return void
|
|
* @access public
|
|
*/
|
|
function setConfig($config = array()) {
|
|
$this->config = array_merge($this->_baseConfig, $this->config, $config);
|
|
}
|
|
|
|
/**
|
|
* Cache the DataSource description
|
|
*
|
|
* @param string $object The name of the object (model) to cache
|
|
* @param mixed $data The description of the model, usually a string or array
|
|
* @return mixed
|
|
* @access private
|
|
*/
|
|
function __cacheDescription($object, $data = null) {
|
|
if ($this->cacheSources === false) {
|
|
return null;
|
|
}
|
|
|
|
if ($data !== null) {
|
|
$this->__descriptions[$object] =& $data;
|
|
}
|
|
|
|
$key = ConnectionManager::getSourceName($this) . '_' . $object;
|
|
$cache = Cache::read($key, '_cake_model_');
|
|
|
|
if (empty($cache)) {
|
|
$cache = $data;
|
|
Cache::write($key, $cache, '_cake_model_');
|
|
}
|
|
|
|
return $cache;
|
|
}
|
|
|
|
/**
|
|
* Replaces `{$__cakeID__$}` and `{$__cakeForeignKey__$}` placeholders in query data.
|
|
*
|
|
* @param string $query Query string needing replacements done.
|
|
* @param array $data Array of data with values that will be inserted in placeholders.
|
|
* @param string $association Name of association model being replaced
|
|
* @param unknown_type $assocData
|
|
* @param Model $model Instance of the model to replace $__cakeID__$
|
|
* @param Model $linkModel Instance of model to replace $__cakeForeignKey__$
|
|
* @param array $stack
|
|
* @return string String of query data with placeholders replaced.
|
|
* @access public
|
|
* @todo Remove and refactor $assocData, ensure uses of the method have the param removed too.
|
|
*/
|
|
function insertQueryData($query, $data, $association, $assocData, &$model, &$linkModel, $stack) {
|
|
$keys = array('{$__cakeID__$}', '{$__cakeForeignKey__$}');
|
|
|
|
foreach ($keys as $key) {
|
|
$val = null;
|
|
$type = null;
|
|
|
|
if (strpos($query, $key) !== false) {
|
|
switch ($key) {
|
|
case '{$__cakeID__$}':
|
|
if (isset($data[$model->alias]) || isset($data[$association])) {
|
|
if (isset($data[$model->alias][$model->primaryKey])) {
|
|
$val = $data[$model->alias][$model->primaryKey];
|
|
} elseif (isset($data[$association][$model->primaryKey])) {
|
|
$val = $data[$association][$model->primaryKey];
|
|
}
|
|
} else {
|
|
$found = false;
|
|
foreach (array_reverse($stack) as $assoc) {
|
|
if (isset($data[$assoc]) && isset($data[$assoc][$model->primaryKey])) {
|
|
$val = $data[$assoc][$model->primaryKey];
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!$found) {
|
|
$val = '';
|
|
}
|
|
}
|
|
$type = $model->getColumnType($model->primaryKey);
|
|
break;
|
|
case '{$__cakeForeignKey__$}':
|
|
foreach ($model->__associations as $id => $name) {
|
|
foreach ($model->$name as $assocName => $assoc) {
|
|
if ($assocName === $association) {
|
|
if (isset($assoc['foreignKey'])) {
|
|
$foreignKey = $assoc['foreignKey'];
|
|
$assocModel = $model->$assocName;
|
|
$type = $assocModel->getColumnType($assocModel->primaryKey);
|
|
|
|
if (isset($data[$model->alias][$foreignKey])) {
|
|
$val = $data[$model->alias][$foreignKey];
|
|
} elseif (isset($data[$association][$foreignKey])) {
|
|
$val = $data[$association][$foreignKey];
|
|
} else {
|
|
$found = false;
|
|
foreach (array_reverse($stack) as $assoc) {
|
|
if (isset($data[$assoc]) && isset($data[$assoc][$foreignKey])) {
|
|
$val = $data[$assoc][$foreignKey];
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!$found) {
|
|
$val = '';
|
|
}
|
|
}
|
|
}
|
|
break 3;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
if (empty($val) && $val !== '0') {
|
|
return false;
|
|
}
|
|
$query = str_replace($key, $this->value($val, $type), $query);
|
|
}
|
|
}
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* To-be-overridden in subclasses.
|
|
*
|
|
* @param Model $model Model instance
|
|
* @param string $key Key name to make
|
|
* @return string Key name for model.
|
|
* @access public
|
|
*/
|
|
function resolveKey(&$model, $key) {
|
|
return $model->alias . $key;
|
|
}
|
|
|
|
/**
|
|
* Closes the current datasource.
|
|
*
|
|
* @return void
|
|
* @access public
|
|
*/
|
|
function __destruct() {
|
|
if ($this->_transactionStarted) {
|
|
$null = null;
|
|
$this->rollback($null);
|
|
}
|
|
if ($this->connected) {
|
|
$this->close();
|
|
}
|
|
}
|
|
}
|