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<?php
/**
* Dbo Source
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Model.Datasource
* @since CakePHP(tm) v 0.10.0.1076
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::uses('DataSource', 'Model/Datasource');
App::uses('String', 'Utility');
App::uses('View', 'View');
/**
* DboSource
*
* Creates DBO-descendant objects from a given db connection configuration
*
* @package Cake.Model.Datasource
*/
class DboSource extends DataSource {
/**
* Description string for this Database Data Source.
*
* @var string
*/
public $description = "Database Data Source";
/**
* index definition, standard cake, primary, index, unique
*
* @var array
*/
public $index = array('PRI' => 'primary', 'MUL' => 'index', 'UNI' => 'unique');
/**
* Database keyword used to assign aliases to identifiers.
*
* @var string
*/
public $alias = 'AS ';
/**
* Caches result from query parsing operations. Cached results for both DboSource::name() and
* DboSource::conditions() will be stored here. Method caching uses `crc32()` which is
* fast but can collisions more easily than other hashing algorithms. If you have problems
* with collisions, set DboSource::$cacheMethods to false.
*
* @var array
*/
public static $methodCache = array();
/**
* Whether or not to cache the results of DboSource::name() and DboSource::conditions()
* into the memory cache. Set to false to disable the use of the memory cache.
*
* @var boolean.
*/
public $cacheMethods = true;
/**
* Flag to support nested transactions. If it is set to false, you will be able to use
* the transaction methods (begin/commit/rollback), but just the global transaction will
* be executed.
*
* @var boolean
*/
public $nestedTransaction = false;
/**
* Print full query debug info?
*
* @var boolean
*/
public $fullDebug = false;
/**
* String to hold how many rows were affected by the last SQL operation.
*
* @var string
*/
public $affected = null;
/**
* Number of rows in current resultset
*
* @var integer
*/
public $numRows = null;
/**
* Time the last query took
*
* @var integer
*/
public $took = null;
/**
* Result
*
* @var array
*/
protected $_result = null;
/**
* Queries count.
*
* @var integer
*/
protected $_queriesCnt = 0;
/**
* Total duration of all queries.
*
* @var integer
*/
protected $_queriesTime = null;
/**
* Log of queries executed by this DataSource
*
* @var array
*/
protected $_queriesLog = array();
/**
* Maximum number of items in query log
*
* This is to prevent query log taking over too much memory.
*
* @var integer Maximum number of queries in the queries log.
*/
protected $_queriesLogMax = 200;
/**
* Caches serialized results of executed queries
*
* @var array Cache of results from executed sql queries.
*/
protected $_queryCache = array();
/**
* A reference to the physical connection of this DataSource
*
* @var array
*/
protected $_connection = null;
/**
* The DataSource configuration key name
*
* @var string
*/
public $configKeyName = null;
/**
* The starting character that this DataSource uses for quoted identifiers.
*
* @var string
*/
public $startQuote = null;
/**
* The ending character that this DataSource uses for quoted identifiers.
*
* @var string
*/
public $endQuote = null;
/**
* The set of valid SQL operations usable in a WHERE statement
*
* @var array
*/
protected $_sqlOps = array('like', 'ilike', 'or', 'not', 'in', 'between', 'regexp', 'similar to');
/**
* Indicates the level of nested transactions
*
* @var integer
*/
protected $_transactionNesting = 0;
/**
* Default fields that are used by the DBO
*
* @var array
*/
protected $_queryDefaults = array(
'conditions' => array(),
'fields' => null,
'table' => null,
'alias' => null,
'order' => null,
'limit' => null,
'joins' => array(),
'group' => null,
'offset' => null
);
/**
* Separator string for virtualField composition
*
* @var string
*/
public $virtualFieldSeparator = '__';
/**
* List of table engine specific parameters used on table creating
*
* @var array
*/
public $tableParameters = array();
/**
* List of engine specific additional field parameters used on table creating
*
* @var array
*/
public $fieldParameters = array();
/**
* Indicates whether there was a change on the cached results on the methods of this class
* This will be used for storing in a more persistent cache
*
* @var boolean
*/
protected $_methodCacheChange = false;
/**
* Constructor
*
* @param array $config Array of configuration information for the Datasource.
* @param boolean $autoConnect Whether or not the datasource should automatically connect.
* @throws MissingConnectionException when a connection cannot be made.
*/
public function __construct($config = null, $autoConnect = true) {
if (!isset($config['prefix'])) {
$config['prefix'] = '';
}
parent::__construct($config);
$this->fullDebug = Configure::read('debug') > 1;
if (!$this->enabled()) {
throw new MissingConnectionException(array(
'class' => get_class($this)
));
}
if ($autoConnect) {
$this->connect();
}
}
/**
* Reconnects to database server with optional new settings
*
* @param array $config An array defining the new configuration settings
* @return boolean True on success, false on failure
*/
public function reconnect($config = array()) {
$this->disconnect();
$this->setConfig($config);
$this->_sources = null;
return $this->connect();
}
/**
* Disconnects from database.
*
* @return boolean True if the database could be disconnected, else false
*/
public function disconnect() {
if ($this->_result instanceof PDOStatement) {
$this->_result->closeCursor();
}
unset($this->_connection);
$this->connected = false;
return true;
}
/**
* Get the underlying connection object.
*
* @return PDO
*/
public function getConnection() {
return $this->_connection;
}
/**
* Gets the version string of the database server
*
* @return string The database version
*/
public function getVersion() {
return $this->_connection->getAttribute(PDO::ATTR_SERVER_VERSION);
}
/**
* 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 $column The column into which this data will be inserted
* @return string Quoted and escaped data
*/
public function value($data, $column = null) {
if (is_array($data) && !empty($data)) {
return array_map(
array(&$this, 'value'),
$data, array_fill(0, count($data), $column)
);
} elseif (is_object($data) && isset($data->type, $data->value)) {
if ($data->type == 'identifier') {
return $this->name($data->value);
} elseif ($data->type == 'expression') {
return $data->value;
}
} elseif (in_array($data, array('{$__cakeID__$}', '{$__cakeForeignKey__$}'), true)) {
return $data;
}
if ($data === null || (is_array($data) && empty($data))) {
return 'NULL';
}
if (empty($column)) {
$column = $this->introspectType($data);
}
switch ($column) {
case 'binary':
return $this->_connection->quote($data, PDO::PARAM_LOB);
break;
case 'boolean':
return $this->_connection->quote($this->boolean($data, true), PDO::PARAM_BOOL);
break;
case 'string':
case 'text':
return $this->_connection->quote($data, PDO::PARAM_STR);
default:
if ($data === '') {
return 'NULL';
}
if (is_float($data)) {
return str_replace(',', '.', strval($data));
}
if ((is_int($data) || $data === '0') || (
is_numeric($data) && strpos($data, ',') === false &&
$data[0] != '0' && strpos($data, 'e') === false)
) {
return $data;
}
return $this->_connection->quote($data);
break;
}
}
/**
* Returns an object to represent a database identifier in a query. Expression objects
* are not sanitized or escaped.
*
* @param string $identifier A SQL expression to be used as an identifier
* @return stdClass An object representing a database identifier to be used in a query
*/
public function identifier($identifier) {
$obj = new stdClass();
$obj->type = 'identifier';
$obj->value = $identifier;
return $obj;
}
/**
* Returns an object to represent a database expression in a query. Expression objects
* are not sanitized or escaped.
*
* @param string $expression An arbitrary SQL expression to be inserted into a query.
* @return stdClass An object representing a database expression to be used in a query
*/
public function expression($expression) {
$obj = new stdClass();
$obj->type = 'expression';
$obj->value = $expression;
return $obj;
}
/**
* Executes given SQL statement.
*
* @param string $sql SQL statement
* @param array $params Additional options for the query.
* @return boolean
*/
public function rawQuery($sql, $params = array()) {
$this->took = $this->numRows = false;
return $this->execute($sql, $params);
}
/**
* Queries the database with given SQL statement, and obtains some metadata about the result
* (rows affected, timing, any errors, number of rows in resultset). The query is also logged.
* If Configure::read('debug') is set, the log is shown all the time, else it is only shown on errors.
*
* ### Options
*
* - log - Whether or not the query should be logged to the memory log.
*
* @param string $sql SQL statement
* @param array $options
* @param array $params values to be bound to the query
* @return mixed Resource or object representing the result set, or false on failure
*/
public function execute($sql, $options = array(), $params = array()) {
$options += array('log' => $this->fullDebug);
$t = microtime(true);
$this->_result = $this->_execute($sql, $params);
if ($options['log']) {
$this->took = round((microtime(true) - $t) * 1000, 0);
$this->numRows = $this->affected = $this->lastAffected();
$this->logQuery($sql, $params);
}
return $this->_result;
}
/**
* Executes given SQL statement.
*
* @param string $sql SQL statement
* @param array $params list of params to be bound to query
* @param array $prepareOptions Options to be used in the prepare statement
* @return mixed PDOStatement if query executes with no problem, true as the result of a successful, false on error
* query returning no rows, such as a CREATE statement, false otherwise
* @throws PDOException
*/
protected function _execute($sql, $params = array(), $prepareOptions = array()) {
$sql = trim($sql);
if (preg_match('/^(?:CREATE|ALTER|DROP)/i', $sql)) {
$statements = array_filter(explode(';', $sql));
if (count($statements) > 1) {
$result = array_map(array($this, '_execute'), $statements);
return array_search(false, $result) === false;
}
}
try {
$query = $this->_connection->prepare($sql, $prepareOptions);
$query->setFetchMode(PDO::FETCH_LAZY);
if (!$query->execute($params)) {
$this->_results = $query;
$query->closeCursor();
return false;
}
if (!$query->columnCount()) {
$query->closeCursor();
if (!$query->rowCount()) {
return true;
}
}
return $query;
} catch (PDOException $e) {
if (isset($query->queryString)) {
$e->queryString = $query->queryString;
} else {
$e->queryString = $sql;
}
throw $e;
}
}
/**
* Returns a formatted error message from previous database operation.
*
* @param PDOStatement $query the query to extract the error from if any
* @return string Error message with error number
*/
public function lastError(PDOStatement $query = null) {
if ($query) {
$error = $query->errorInfo();
} else {
$error = $this->_connection->errorInfo();
}
if (empty($error[2])) {
return null;
}
return $error[1] . ': ' . $error[2];
}
/**
* Returns number of affected rows in previous database operation. If no previous operation exists,
* this returns false.
*
* @param mixed $source
* @return integer Number of affected rows
*/
public function lastAffected($source = null) {
if ($this->hasResult()) {
return $this->_result->rowCount();
}
return 0;
}
/**
* Returns number of rows in previous resultset. If no previous resultset exists,
* this returns false.
*
* @param mixed $source Not used
* @return integer Number of rows in resultset
*/
public function lastNumRows($source = null) {
return $this->lastAffected();
}
/**
* DataSource Query abstraction
*
* @return resource Result resource identifier.
*/
public function query() {
$args = func_get_args();
$fields = null;
$order = null;
$limit = null;
$page = null;
$recursive = null;
if (count($args) === 1) {
return $this->fetchAll($args[0]);
} elseif (count($args) > 1 && (strpos($args[0], 'findBy') === 0 || strpos($args[0], 'findAllBy') === 0)) {
$params = $args[1];
if (substr($args[0], 0, 6) === 'findBy') {
$all = false;
$field = Inflector::underscore(substr($args[0], 6));
} else {
$all = true;
$field = Inflector::underscore(substr($args[0], 9));
}
$or = (strpos($field, '_or_') !== false);
if ($or) {
$field = explode('_or_', $field);
} else {
$field = explode('_and_', $field);
}
$off = count($field) - 1;
if (isset($params[1 + $off])) {
$fields = $params[1 + $off];
}
if (isset($params[2 + $off])) {
$order = $params[2 + $off];
}
if (!array_key_exists(0, $params)) {
return false;
}
$c = 0;
$conditions = array();
foreach ($field as $f) {
$conditions[$args[2]->alias . '.' . $f] = $params[$c++];
}
if ($or) {
$conditions = array('OR' => $conditions);
}
if ($all) {
if (isset($params[3 + $off])) {
$limit = $params[3 + $off];
}
if (isset($params[4 + $off])) {
$page = $params[4 + $off];
}
if (isset($params[5 + $off])) {
$recursive = $params[5 + $off];
}
return $args[2]->find('all', compact('conditions', 'fields', 'order', 'limit', 'page', 'recursive'));
} else {
if (isset($params[3 + $off])) {
$recursive = $params[3 + $off];
}
return $args[2]->find('first', compact('conditions', 'fields', 'order', 'recursive'));
}
} else {
if (isset($args[1]) && $args[1] === true) {
return $this->fetchAll($args[0], true);
} elseif (isset($args[1]) && !is_array($args[1]) ) {
return $this->fetchAll($args[0], false);
} elseif (isset($args[1]) && is_array($args[1])) {
if (isset($args[2])) {
$cache = $args[2];
} else {
$cache = true;
}
return $this->fetchAll($args[0], $args[1], array('cache' => $cache));
}
}
}
/**
* Returns a row from current resultset as an array
*
* @param string $sql Some SQL to be executed.
* @return array The fetched row as an array
*/
public function fetchRow($sql = null) {
if (is_string($sql) && strlen($sql) > 5 && !$this->execute($sql)) {
return null;
}
if ($this->hasResult()) {
$this->resultSet($this->_result);
$resultRow = $this->fetchResult();
if (isset($resultRow[0])) {
$this->fetchVirtualField($resultRow);
}
return $resultRow;
} else {
return null;
}
}
/**
* Returns an array of all result rows for a given SQL query.
* Returns false if no rows matched.
*
*
* ### Options
*
* - `cache` - Returns the cached version of the query, if exists and stores the result in cache.
* This is a non-persistent cache, and only lasts for a single request. This option
* defaults to true. If you are directly calling this method, you can disable caching
* by setting $options to `false`
*
* @param string $sql SQL statement
* @param array $params parameters to be bound as values for the SQL statement
* @param array $options additional options for the query.
* @return array Array of resultset rows, or false if no rows matched
*/
public function fetchAll($sql, $params = array(), $options = array()) {
if (is_string($options)) {
$options = array('modelName' => $options);
}
if (is_bool($params)) {
$options['cache'] = $params;
$params = array();
}
$options += array('cache' => true);
$cache = $options['cache'];
if ($cache && ($cached = $this->getQueryCache($sql, $params)) !== false) {
return $cached;
}
if ($result = $this->execute($sql, array(), $params)) {
$out = array();
if ($this->hasResult()) {
$first = $this->fetchRow();
if ($first != null) {
$out[] = $first;
}
while ($item = $this->fetchResult()) {
if (isset($item[0])) {
$this->fetchVirtualField($item);
}
$out[] = $item;
}
}
if (!is_bool($result) && $cache) {
$this->_writeQueryCache($sql, $out, $params);
}
if (empty($out) && is_bool($this->_result)) {
return $this->_result;
}
return $out;
}
return false;
}
/**
* Fetches the next row from the current result set
*
* @return boolean
*/
public function fetchResult() {
return false;
}
/**
* Modifies $result array to place virtual fields in model entry where they belongs to
*
* @param array $result Reference to the fetched row
* @return void
*/
public function fetchVirtualField(&$result) {
if (isset($result[0]) && is_array($result[0])) {
foreach ($result[0] as $field => $value) {
if (strpos($field, $this->virtualFieldSeparator) === false) {
continue;
}
list($alias, $virtual) = explode($this->virtualFieldSeparator, $field);
if (!ClassRegistry::isKeySet($alias)) {
return;
}
$model = ClassRegistry::getObject($alias);
if ($model->isVirtualField($virtual)) {
$result[$alias][$virtual] = $value;
unset($result[0][$field]);
}
}
if (empty($result[0])) {
unset($result[0]);
}
}
}
/**
* Returns a single field of the first of query results for a given SQL query, or false if empty.
*
* @param string $name Name of the field
* @param string $sql SQL query
* @return mixed Value of field read.
*/
public function field($name, $sql) {
$data = $this->fetchRow($sql);
if (empty($data[$name])) {
return false;
}
return $data[$name];
}
/**
* Empties the method caches.
* These caches are used by DboSource::name() and DboSource::conditions()
*
* @return void
*/
public function flushMethodCache() {
$this->_methodCacheChange = true;
self::$methodCache = array();
}
/**
* Cache a value into the methodCaches. Will respect the value of DboSource::$cacheMethods.
* Will retrieve a value from the cache if $value is null.
*
* If caching is disabled and a write is attempted, the $value will be returned.
* A read will either return the value or null.
*
* @param string $method Name of the method being cached.
* @param string $key The key name for the cache operation.
* @param mixed $value The value to cache into memory.
* @return mixed Either null on failure, or the value if its set.
*/
public function cacheMethod($method, $key, $value = null) {
if ($this->cacheMethods === false) {
return $value;
}
if (empty(self::$methodCache)) {
self::$methodCache = Cache::read('method_cache', '_cake_core_');
}
if ($value === null) {
return (isset(self::$methodCache[$method][$key])) ? self::$methodCache[$method][$key] : null;
}
$this->_methodCacheChange = true;
return self::$methodCache[$method][$key] = $value;
}
/**
* Returns a quoted name of $data for use in an SQL statement.
* Strips fields out of SQL functions before quoting.
*
* Results of this method are stored in a memory cache. This improves performance, but
* because the method uses a simple hashing algorithm it can infrequently have collisions.
* Setting DboSource::$cacheMethods to false will disable the memory cache.
*
* @param mixed $data Either a string with a column to quote. An array of columns to quote or an
* object from DboSource::expression() or DboSource::identifier()
* @return string SQL field
*/
public function name($data) {
if (is_object($data) && isset($data->type)) {
return $data->value;
}
if ($data === '*') {
return '*';
}
if (is_array($data)) {
foreach ($data as $i => $dataItem) {
$data[$i] = $this->name($dataItem);
}
return $data;
}
$cacheKey = crc32($this->startQuote . $data . $this->endQuote);
if ($return = $this->cacheMethod(__FUNCTION__, $cacheKey)) {
return $return;
}
$data = trim($data);
if (preg_match('/^[\w-]+(?:\.[^ \*]*)*$/', $data)) { // string, string.string
if (strpos($data, '.') === false) { // string
return $this->cacheMethod(__FUNCTION__, $cacheKey, $this->startQuote . $data . $this->endQuote);
}
$items = explode('.', $data);
return $this->cacheMethod(__FUNCTION__, $cacheKey,
$this->startQuote . implode($this->endQuote . '.' . $this->startQuote, $items) . $this->endQuote
);
}
if (preg_match('/^[\w-]+\.\*$/', $data)) { // string.*
return $this->cacheMethod(__FUNCTION__, $cacheKey,
$this->startQuote . str_replace('.*', $this->endQuote . '.*', $data)
);
}
if (preg_match('/^([\w-]+)\((.*)\)$/', $data, $matches)) { // Functions
return $this->cacheMethod(__FUNCTION__, $cacheKey,
$matches[1] . '(' . $this->name($matches[2]) . ')'
);
}
if (
preg_match('/^([\w-]+(\.[\w-]+|\(.*\))*)\s+' . preg_quote($this->alias) . '\s*([\w-]+)$/i', $data, $matches
)) {
return $this->cacheMethod(
__FUNCTION__, $cacheKey,
preg_replace(
'/\s{2,}/', ' ', $this->name($matches[1]) . ' ' . $this->alias . ' ' . $this->name($matches[3])
)
);
}
if (preg_match('/^[\w-_\s]*[\w-_]+/', $data)) {
return $this->cacheMethod(__FUNCTION__, $cacheKey, $this->startQuote . $data . $this->endQuote);
}
return $this->cacheMethod(__FUNCTION__, $cacheKey, $data);
}
/**
* Checks if the source is connected to the database.
*
* @return boolean True if the database is connected, else false
*/
public function isConnected() {
return $this->connected;
}
/**
* Checks if the result is valid
*
* @return boolean True if the result is valid else false
*/
public function hasResult() {
return is_a($this->_result, 'PDOStatement');
}
/**
* Get the query log as an array.
*
* @param boolean $sorted Get the queries sorted by time taken, defaults to false.
* @param boolean $clear If True the existing log will cleared.
* @return array Array of queries run as an array
*/
public function getLog($sorted = false, $clear = true) {
if ($sorted) {
$log = sortByKey($this->_queriesLog, 'took', 'desc', SORT_NUMERIC);
} else {
$log = $this->_queriesLog;
}
if ($clear) {
$this->_queriesLog = array();
}
return array('log' => $log, 'count' => $this->_queriesCnt, 'time' => $this->_queriesTime);
}
/**
* Outputs the contents of the queries log. If in a non-CLI environment the sql_log element
* will be rendered and output. If in a CLI environment, a plain text log is generated.
*
* @param boolean $sorted Get the queries sorted by time taken, defaults to false.
* @return void
*/
public function showLog($sorted = false) {
$log = $this->getLog($sorted, false);
if (empty($log['log'])) {
return;
}
if (PHP_SAPI != 'cli') {
$controller = null;
$View = new View($controller, false);
$View->set('logs', array($this->configKeyName => $log));
echo $View->element('sql_dump', array('_forced_from_dbo_' => true));
} else {
foreach ($log['log'] as $k => $i) {
print (($k + 1) . ". {$i['query']}\n");
}
}
}
/**
* Log given SQL query.
*
* @param string $sql SQL statement
* @param array $params Values binded to the query (prepared statements)
* @return void
*/
public function logQuery($sql, $params = array()) {
$this->_queriesCnt++;
$this->_queriesTime += $this->took;
$this->_queriesLog[] = array(
'query' => $sql,
'params' => $params,
'affected' => $this->affected,
'numRows' => $this->numRows,
'took' => $this->took
);
if (count($this->_queriesLog) > $this->_queriesLogMax) {
array_pop($this->_queriesLog);
}
}
/**
* Gets full table name including prefix
*
* @param mixed $model Either a Model object or a string table name.
* @param boolean $quote Whether you want the table name quoted.
* @param boolean $schema Whether you want the schema name included.
* @return string Full quoted table name
*/
public function fullTableName($model, $quote = true, $schema = true) {
if (is_object($model)) {
$schemaName = $model->schemaName;
$table = $model->tablePrefix . $model->table;
} elseif (!empty($this->config['prefix']) && strpos($model, $this->config['prefix']) !== 0) {
$table = $this->config['prefix'] . strval($model);
} else {
$table = strval($model);
}
if ($schema && !isset($schemaName)) {
$schemaName = $this->getSchemaName();
}
if ($quote) {
if ($schema && !empty($schemaName)) {
if (false == strstr($table, '.')) {
return $this->name($schemaName) . '.' . $this->name($table);
}
}
return $this->name($table);
}
if ($schema && !empty($schemaName)) {
if (false == strstr($table, '.')) {
return $schemaName . '.' . $table;
}
}
return $table;
}
/**
* The "C" in CRUD
*
* Creates new records in the database.
*
* @param Model $model Model object that the record is for.
* @param array $fields An array of field names to insert. If null, $model->data will be
* used to generate field names.
* @param array $values An array of values with keys matching the fields. If null, $model->data will
* be used to generate values.
* @return boolean Success
*/
public function create(Model $model, $fields = null, $values = null) {
$id = null;
if ($fields == null) {
unset($fields, $values);
$fields = array_keys($model->data);
$values = array_values($model->data);
}
$count = count($fields);
for ($i = 0; $i < $count; $i++) {
$valueInsert[] = $this->value($values[$i], $model->getColumnType($fields[$i]));
$fieldInsert[] = $this->name($fields[$i]);
if ($fields[$i] == $model->primaryKey) {
$id = $values[$i];
}
}
$query = array(
'table' => $this->fullTableName($model),
'fields' => implode(', ', $fieldInsert),
'values' => implode(', ', $valueInsert)
);
if ($this->execute($this->renderStatement('create', $query))) {
if (empty($id)) {
$id = $this->lastInsertId($this->fullTableName($model, false, false), $model->primaryKey);
}
$model->setInsertID($id);
$model->id = $id;
return true;
}
$model->onError();
return false;
}
/**
* The "R" in CRUD
*
* Reads record(s) from the database.
*
* @param Model $model A Model object that the query is for.
* @param array $queryData An array of queryData information containing keys similar to Model::find()
* @param integer $recursive Number of levels of association
* @return mixed boolean false on error/failure. An array of results on success.
*/
public function read(Model $model, $queryData = array(), $recursive = null) {
$queryData = $this->_scrubQueryData($queryData);
$null = null;
$array = array('callbacks' => $queryData['callbacks']);
$linkedModels = array();
$bypass = false;
if ($recursive === null && isset($queryData['recursive'])) {
$recursive = $queryData['recursive'];
}
if (!is_null($recursive)) {
$_recursive = $model->recursive;
$model->recursive = $recursive;
}
if (!empty($queryData['fields'])) {
$bypass = true;
$queryData['fields'] = $this->fields($model, null, $queryData['fields']);
} else {
$queryData['fields'] = $this->fields($model);
}
$_associations = $model->associations();
if ($model->recursive == -1) {
$_associations = array();
} elseif ($model->recursive == 0) {
unset($_associations[2], $_associations[3]);
}
foreach ($_associations as $type) {
foreach ($model->{$type} as $assoc => $assocData) {
$linkModel = $model->{$assoc};
$external = isset($assocData['external']);
$linkModel->getDataSource();
if ($model->useDbConfig === $linkModel->useDbConfig) {
if ($bypass) {
$assocData['fields'] = false;
}
if (true === $this->generateAssociationQuery($model, $linkModel, $type, $assoc, $assocData, $queryData, $external, $null)) {
$linkedModels[$type . '/' . $assoc] = true;
}
}
}
}
$query = trim($this->generateAssociationQuery($model, null, null, null, null, $queryData, false, $null));
$resultSet = $this->fetchAll($query, $model->cacheQueries);
if ($resultSet === false) {
$model->onError();
return false;
}
$filtered = array();
if ($queryData['callbacks'] === true || $queryData['callbacks'] === 'after') {
$filtered = $this->_filterResults($resultSet, $model);
}
if ($model->recursive > -1) {
foreach ($_associations as $type) {
foreach ($model->{$type} as $assoc => $assocData) {
$linkModel = $model->{$assoc};
if (!isset($linkedModels[$type . '/' . $assoc])) {
if ($model->useDbConfig === $linkModel->useDbConfig) {
$db = $this;
} else {
$db = ConnectionManager::getDataSource($linkModel->useDbConfig);
}
} elseif ($model->recursive > 1 && ($type === 'belongsTo' || $type === 'hasOne')) {
$db = $this;
}
if (isset($db) && method_exists($db, 'queryAssociation')) {
$stack = array($assoc);
$db->queryAssociation($model, $linkModel, $type, $assoc, $assocData, $array, true, $resultSet, $model->recursive - 1, $stack);
unset($db);
if ($type === 'hasMany') {
$filtered[] = $assoc;
}
}
}
}
if ($queryData['callbacks'] === true || $queryData['callbacks'] === 'after') {
$this->_filterResults($resultSet, $model, $filtered);
}
}
if (!is_null($recursive)) {
$model->recursive = $_recursive;
}
return $resultSet;
}
/**
* Passes association results thru afterFind filters of corresponding model
*
* @param array $results Reference of resultset to be filtered
* @param Model $model Instance of model to operate against
* @param array $filtered List of classes already filtered, to be skipped
* @return array Array of results that have been filtered through $model->afterFind
*/
protected function _filterResults(&$results, Model $model, $filtered = array()) {
$current = reset($results);
if (!is_array($current)) {
return array();
}
$keys = array_diff(array_keys($current), $filtered, array($model->alias));
$filtering = array();
foreach ($keys as $className) {
if (!isset($model->{$className}) || !is_object($model->{$className})) {
continue;
}
$linkedModel = $model->{$className};
$filtering[] = $className;
foreach ($results as &$result) {
$data = $linkedModel->afterFind(array(array($className => $result[$className])), false);
if (isset($data[0][$className])) {
$result[$className] = $data[0][$className];
}
}
}
return $filtering;
}
/**
* Queries associations. Used to fetch results on recursive models.
*
* @param Model $model Primary Model object
* @param Model $linkModel Linked model that
* @param string $type Association type, one of the model association types ie. hasMany
* @param string $association
* @param array $assocData
* @param array $queryData
* @param boolean $external Whether or not the association query is on an external datasource.
* @param array $resultSet Existing results
* @param integer $recursive Number of levels of association
* @param array $stack
* @return mixed
* @throws CakeException when results cannot be created.
*/
public function queryAssociation(Model $model, &$linkModel, $type, $association, $assocData, &$queryData, $external, &$resultSet, $recursive, $stack) {
if ($query = $this->generateAssociationQuery($model, $linkModel, $type, $association, $assocData, $queryData, $external, $resultSet)) {
if (!is_array($resultSet)) {
throw new CakeException(__d('cake_dev', 'Error in Model %s', get_class($model)));
}
if ($type === 'hasMany' && empty($assocData['limit']) && !empty($assocData['foreignKey'])) {
$ins = $fetch = array();
foreach ($resultSet as &$result) {
if ($in = $this->insertQueryData('{$__cakeID__$}', $result, $association, $assocData, $model, $linkModel, $stack)) {
$ins[] = $in;
}
}
if (!empty($ins)) {
$ins = array_unique($ins);
$fetch = $this->fetchAssociated($model, $query, $ins);
}
if (!empty($fetch) && is_array($fetch)) {
if ($recursive > 0) {
foreach ($linkModel->associations() as $type1) {
foreach ($linkModel->{$type1} as $assoc1 => $assocData1) {
$deepModel = $linkModel->{$assoc1};
$tmpStack = $stack;
$tmpStack[] = $assoc1;
if ($linkModel->useDbConfig === $deepModel->useDbConfig) {
$db = $this;
} else {
$db = ConnectionManager::getDataSource($deepModel->useDbConfig);
}
$db->queryAssociation($linkModel, $deepModel, $type1, $assoc1, $assocData1, $queryData, true, $fetch, $recursive - 1, $tmpStack);
}
}
}
}
if ($queryData['callbacks'] === true || $queryData['callbacks'] === 'after') {
$this->_filterResults($fetch, $model);
}
return $this->_mergeHasMany($resultSet, $fetch, $association, $model, $linkModel);
} elseif ($type === 'hasAndBelongsToMany') {
$ins = $fetch = array();
foreach ($resultSet as &$result) {
if ($in = $this->insertQueryData('{$__cakeID__$}', $result, $association, $assocData, $model, $linkModel, $stack)) {
$ins[] = $in;
}
}
if (!empty($ins)) {
$ins = array_unique($ins);
if (count($ins) > 1) {
$query = str_replace('{$__cakeID__$}', '(' . implode(', ', $ins) . ')', $query);
$query = str_replace('= (', 'IN (', $query);
} else {
$query = str_replace('{$__cakeID__$}', $ins[0], $query);
}
$query = str_replace(' WHERE 1 = 1', '', $query);
}
$foreignKey = $model->hasAndBelongsToMany[$association]['foreignKey'];
$joinKeys = array($foreignKey, $model->hasAndBelongsToMany[$association]['associationForeignKey']);
list($with, $habtmFields) = $model->joinModel($model->hasAndBelongsToMany[$association]['with'], $joinKeys);
$habtmFieldsCount = count($habtmFields);
$q = $this->insertQueryData($query, null, $association, $assocData, $model, $linkModel, $stack);
if ($q !== false) {
$fetch = $this->fetchAll($q, $model->cacheQueries);
} else {
$fetch = null;
}
}
$modelAlias = $model->alias;
$modelPK = $model->primaryKey;
foreach ($resultSet as &$row) {
if ($type !== 'hasAndBelongsToMany') {
$q = $this->insertQueryData($query, $row, $association, $assocData, $model, $linkModel, $stack);
if ($q !== false) {
$fetch = $this->fetchAll($q, $model->cacheQueries);
} else {
$fetch = null;
}
}
$selfJoin = $linkModel->name === $model->name;
if (!empty($fetch) && is_array($fetch)) {
if ($recursive > 0) {
foreach ($linkModel->associations() as $type1) {
foreach ($linkModel->{$type1} as $assoc1 => $assocData1) {
$deepModel = $linkModel->{$assoc1};
if ($type1 === 'belongsTo' || ($deepModel->alias === $modelAlias && $type === 'belongsTo') || ($deepModel->alias !== $modelAlias)) {
$tmpStack = $stack;
$tmpStack[] = $assoc1;
if ($linkModel->useDbConfig == $deepModel->useDbConfig) {
$db = $this;
} else {
$db = ConnectionManager::getDataSource($deepModel->useDbConfig);
}
$db->queryAssociation($linkModel, $deepModel, $type1, $assoc1, $assocData1, $queryData, true, $fetch, $recursive - 1, $tmpStack);
}
}
}
}
if ($type === 'hasAndBelongsToMany') {
$uniqueIds = $merge = array();
foreach ($fetch as $j => $data) {
if (isset($data[$with]) && $data[$with][$foreignKey] === $row[$modelAlias][$modelPK]) {
if ($habtmFieldsCount <= 2) {
unset($data[$with]);
}
$merge[] = $data;
}
}
if (empty($merge) && !isset($row[$association])) {
$row[$association] = $merge;
} else {
$this->_mergeAssociation($row, $merge, $association, $type);
}
} else {
$this->_mergeAssociation($row, $fetch, $association, $type, $selfJoin);
}
if (isset($row[$association])) {
$row[$association] = $linkModel->afterFind($row[$association], false);
}
} else {
$tempArray[0][$association] = false;
$this->_mergeAssociation($row, $tempArray, $association, $type, $selfJoin);
}
}
}
}
/**
* A more efficient way to fetch associations. Woohoo!
*
* @param Model $model Primary model object
* @param string $query Association query
* @param array $ids Array of IDs of associated records
* @return array Association results
*/
public function fetchAssociated(Model $model, $query, $ids) {
$query = str_replace('{$__cakeID__$}', implode(', ', $ids), $query);
if (count($ids) > 1) {
$query = str_replace('= (', 'IN (', $query);
}
return $this->fetchAll($query, $model->cacheQueries);
}
/**
* mergeHasMany - Merge the results of hasMany relations.
*
*
* @param array $resultSet Data to merge into
* @param array $merge Data to merge
* @param string $association Name of Model being Merged
* @param Model $model Model being merged onto
* @param Model $linkModel Model being merged
* @return void
*/
protected function _mergeHasMany(&$resultSet, $merge, $association, $model, $linkModel) {
$modelAlias = $model->alias;
$modelPK = $model->primaryKey;
$modelFK = $model->hasMany[$association]['foreignKey'];
foreach ($resultSet as &$result) {
if (!isset($result[$modelAlias])) {
continue;
}
$merged = array();
foreach ($merge as $data) {
if ($result[$modelAlias][$modelPK] === $data[$association][$modelFK]) {
if (count($data) > 1) {
$data = array_merge($data[$association], $data);
unset($data[$association]);
foreach ($data as $key => $name) {
if (is_numeric($key)) {
$data[$association][] = $name;
unset($data[$key]);
}
}
$merged[] = $data;
} else {
$merged[] = $data[$association];
}
}
}
$result = Hash::mergeDiff($result, array($association => $merged));
}
}
/**
* Merge association of merge into data
*
* @param array $data
* @param array $merge
* @param string $association
* @param string $type
* @param boolean $selfJoin
* @return void
*/
protected function _mergeAssociation(&$data, &$merge, $association, $type, $selfJoin = false) {
if (isset($merge[0]) && !isset($merge[0][$association])) {
$association = Inflector::pluralize($association);
}
if ($type === 'belongsTo' || $type === 'hasOne') {
if (isset($merge[$association])) {
$data[$association] = $merge[$association][0];
} else {
if (count($merge[0][$association]) > 1) {
foreach ($merge[0] as $assoc => $data2) {
if ($assoc !== $association) {
$merge[0][$association][$assoc] = $data2;
}
}
}
if (!isset($data[$association])) {
if ($merge[0][$association] != null) {
$data[$association] = $merge[0][$association];
} else {
$data[$association] = array();
}
} else {
if (is_array($merge[0][$association])) {
foreach ($data[$association] as $k => $v) {
if (!is_array($v)) {
$dataAssocTmp[$k] = $v;
}
}
foreach ($merge[0][$association] as $k => $v) {
if (!is_array($v)) {
$mergeAssocTmp[$k] = $v;
}
}
$dataKeys = array_keys($data);
$mergeKeys = array_keys($merge[0]);
if ($mergeKeys[0] === $dataKeys[0] || $mergeKeys === $dataKeys) {
$data[$association][$association] = $merge[0][$association];
} else {
$diff = Hash::diff($dataAssocTmp, $mergeAssocTmp);
$data[$association] = array_merge($merge[0][$association], $diff);
}
} elseif ($selfJoin && array_key_exists($association, $merge[0])) {
$data[$association] = array_merge($data[$association], array($association => array()));
}
}
}
} else {
if (isset($merge[0][$association]) && $merge[0][$association] === false) {
if (!isset($data[$association])) {
$data[$association] = array();
}
} else {
foreach ($merge as $i => $row) {
$insert = array();
if (count($row) === 1) {
$insert = $row[$association];
} elseif (isset($row[$association])) {
$insert = array_merge($row[$association], $row);
unset($insert[$association]);
}
if (empty($data[$association]) || (isset($data[$association]) && !in_array($insert, $data[$association], true))) {
$data[$association][] = $insert;
}
}
}
}
}
/**
* Generates an array representing a query or part of a query from a single model or two associated models
*
* @param Model $model
* @param Model $linkModel
* @param string $type
* @param string $association
* @param array $assocData
* @param array $queryData
* @param boolean $external
* @param array $resultSet
* @return mixed
*/
public function generateAssociationQuery(Model $model, $linkModel, $type, $association, $assocData, &$queryData, $external, &$resultSet) {
$queryData = $this->_scrubQueryData($queryData);
$assocData = $this->_scrubQueryData($assocData);
$modelAlias = $model->alias;
if (empty($queryData['fields'])) {
$queryData['fields'] = $this->fields($model, $modelAlias);
} elseif (!empty($model->hasMany) && $model->recursive > -1) {
$assocFields = $this->fields($model, $modelAlias, array("{$modelAlias}.{$model->primaryKey}"));
$passedFields = $queryData['fields'];
if (count($passedFields) === 1) {
if (strpos($passedFields[0], $assocFields[0]) === false && !preg_match('/^[a-z]+\(/i', $passedFields[0])) {
$queryData['fields'] = array_merge($passedFields, $assocFields);
} else {
$queryData['fields'] = $passedFields;
}
} else {
$queryData['fields'] = array_merge($passedFields, $assocFields);
}
unset($assocFields, $passedFields);
}
if ($linkModel === null) {
return $this->buildStatement(
array(
'fields' => array_unique($queryData['fields']),
'table' => $this->fullTableName($model),
'alias' => $modelAlias,
'limit' => $queryData['limit'],
'offset' => $queryData['offset'],
'joins' => $queryData['joins'],
'conditions' => $queryData['conditions'],
'order' => $queryData['order'],
'group' => $queryData['group']
),
$model
);
}
if ($external && !empty($assocData['finderQuery'])) {
return $assocData['finderQuery'];
}
$self = $model->name === $linkModel->name;
$fields = array();
if ($external || (in_array($type, array('hasOne', 'belongsTo')) && $assocData['fields'] !== false)) {
$fields = $this->fields($linkModel, $association, $assocData['fields']);
}
if (empty($assocData['offset']) && !empty($assocData['page'])) {
$assocData['offset'] = ($assocData['page'] - 1) * $assocData['limit'];
}
$assocData['limit'] = $this->limit($assocData['limit'], $assocData['offset']);
switch ($type) {
case 'hasOne':
case 'belongsTo':
$conditions = $this->_mergeConditions(
$assocData['conditions'],
$this->getConstraint($type, $model, $linkModel, $association, array_merge($assocData, compact('external', 'self')))
);
if (!$self && $external) {
foreach ($conditions as $key => $condition) {
if (is_numeric($key) && strpos($condition, $modelAlias . '.') !== false) {
unset($conditions[$key]);
}
}
}
if ($external) {
$query = array_merge($assocData, array(
'conditions' => $conditions,
'table' => $this->fullTableName($linkModel),
'fields' => $fields,
'alias' => $association,
'group' => null
));
$query += array('order' => $assocData['order'], 'limit' => $assocData['limit']);
} else {
$join = array(
'table' => $linkModel,
'alias' => $association,
'type' => isset($assocData['type']) ? $assocData['type'] : 'LEFT',
'conditions' => trim($this->conditions($conditions, true, false, $model))
);
$queryData['fields'] = array_merge($queryData['fields'], $fields);
if (!empty($assocData['order'])) {
$queryData['order'][] = $assocData['order'];
}
if (!in_array($join, $queryData['joins'])) {
$queryData['joins'][] = $join;
}
return true;
}
break;
case 'hasMany':
$assocData['fields'] = $this->fields($linkModel, $association, $assocData['fields']);
if (!empty($assocData['foreignKey'])) {
$assocData['fields'] = array_merge($assocData['fields'], $this->fields($linkModel, $association, array("{$association}.{$assocData['foreignKey']}")));
}
$query = array(
'conditions' => $this->_mergeConditions($this->getConstraint('hasMany', $model, $linkModel, $association, $assocData), $assocData['conditions']),
'fields' => array_unique($assocData['fields']),
'table' => $this->fullTableName($linkModel),
'alias' => $association,
'order' => $assocData['order'],
'limit' => $assocData['limit'],
'group' => null
);
break;
case 'hasAndBelongsToMany':
$joinFields = array();
$joinAssoc = null;
if (isset($assocData['with']) && !empty($assocData['with'])) {
$joinKeys = array($assocData['foreignKey'], $assocData['associationForeignKey']);
list($with, $joinFields) = $model->joinModel($assocData['with'], $joinKeys);
$joinTbl = $model->{$with};
$joinAlias = $joinTbl;
if (is_array($joinFields) && !empty($joinFields)) {
$joinAssoc = $joinAlias = $model->{$with}->alias;
$joinFields = $this->fields($model->{$with}, $joinAlias, $joinFields);
} else {
$joinFields = array();
}
} else {
$joinTbl = $assocData['joinTable'];
$joinAlias = $this->fullTableName($assocData['joinTable']);
}
$query = array(
'conditions' => $assocData['conditions'],
'limit' => $assocData['limit'],
'table' => $this->fullTableName($linkModel),
'alias' => $association,
'fields' => array_merge($this->fields($linkModel, $association, $assocData['fields']), $joinFields),
'order' => $assocData['order'],
'group' => null,
'joins' => array(array(
'table' => $joinTbl,
'alias' => $joinAssoc,
'conditions' => $this->getConstraint('hasAndBelongsToMany', $model, $linkModel, $joinAlias, $assocData, $association)
))
);
break;
}
if (isset($query)) {
return $this->buildStatement($query, $model);
}
return null;
}
/**
* Returns a conditions array for the constraint between two models
*
* @param string $type Association type
* @param Model $model Model object
* @param string $linkModel
* @param string $alias
* @param array $assoc
* @param string $alias2
* @return array Conditions array defining the constraint between $model and $association
*/
public function getConstraint($type, $model, $linkModel, $alias, $assoc, $alias2 = null) {
$assoc += array('external' => false, 'self' => false);
if (empty($assoc['foreignKey'])) {
return array();
}
switch (true) {
case ($assoc['external'] && $type === 'hasOne'):
return array("{$alias}.{$assoc['foreignKey']}" => '{$__cakeID__$}');
case ($assoc['external'] && $type === 'belongsTo'):
return array("{$alias}.{$linkModel->primaryKey}" => '{$__cakeForeignKey__$}');
case (!$assoc['external'] && $type === 'hasOne'):
return array("{$alias}.{$assoc['foreignKey']}" => $this->identifier("{$model->alias}.{$model->primaryKey}"));
case (!$assoc['external'] && $type === 'belongsTo'):
return array("{$model->alias}.{$assoc['foreignKey']}" => $this->identifier("{$alias}.{$linkModel->primaryKey}"));
case ($type === 'hasMany'):
return array("{$alias}.{$assoc['foreignKey']}" => array('{$__cakeID__$}'));
case ($type === 'hasAndBelongsToMany'):
return array(
array("{$alias}.{$assoc['foreignKey']}" => '{$__cakeID__$}'),
array("{$alias}.{$assoc['associationForeignKey']}" => $this->identifier("{$alias2}.{$linkModel->primaryKey}"))
);
}
return array();
}
/**
* Builds and generates a JOIN statement from an array. Handles final clean-up before conversion.
*
* @param array $join An array defining a JOIN statement in a query
* @return string An SQL JOIN statement to be used in a query
* @see DboSource::renderJoinStatement()
* @see DboSource::buildStatement()
*/
public function buildJoinStatement($join) {
$data = array_merge(array(
'type' => null,
'alias' => null,
'table' => 'join_table',
'conditions' => array()
), $join);
if (!empty($data['alias'])) {
$data['alias'] = $this->alias . $this->name($data['alias']);
}
if (!empty($data['conditions'])) {
$data['conditions'] = trim($this->conditions($data['conditions'], true, false));
}
if (!empty($data['table'])) {
$schema = !(is_string($data['table']) && strpos($data['table'], '(') === 0);
$data['table'] = $this->fullTableName($data['table'], true, $schema);
}
return $this->renderJoinStatement($data);
}
/**
* Builds and generates an SQL statement from an array. Handles final clean-up before conversion.
*
* @param array $query An array defining an SQL query
* @param Model $model The model object which initiated the query
* @return string An executable SQL statement
* @see DboSource::renderStatement()
*/
public function buildStatement($query, $model) {
$query = array_merge($this->_queryDefaults, $query);
if (!empty($query['joins'])) {
$count = count($query['joins']);
for ($i = 0; $i < $count; $i++) {
if (is_array($query['joins'][$i])) {
$query['joins'][$i] = $this->buildJoinStatement($query['joins'][$i]);
}
}
}
return $this->renderStatement('select', array(
'conditions' => $this->conditions($query['conditions'], true, true, $model),
'fields' => implode(', ', $query['fields']),
'table' => $query['table'],
'alias' => $this->alias . $this->name($query['alias']),
'order' => $this->order($query['order'], 'ASC', $model),
'limit' => $this->limit($query['limit'], $query['offset']),
'joins' => implode(' ', $query['joins']),
'group' => $this->group($query['group'], $model)
));
}
/**
* Renders a final SQL JOIN statement
*
* @param array $data
* @return string
*/
public function renderJoinStatement($data) {
extract($data);
return trim("{$type} JOIN {$table} {$alias} ON ({$conditions})");
}
/**
* Renders a final SQL statement by putting together the component parts in the correct order
*
* @param string $type type of query being run. e.g select, create, update, delete, schema, alter.
* @param array $data Array of data to insert into the query.
* @return string Rendered SQL expression to be run.
*/
public function renderStatement($type, $data) {
extract($data);
$aliases = null;
switch (strtolower($type)) {
case 'select':
return "SELECT {$fields} FROM {$table} {$alias} {$joins} {$conditions} {$group} {$order} {$limit}";
case 'create':
return "INSERT INTO {$table} ({$fields}) VALUES ({$values})";
case 'update':
if (!empty($alias)) {
$aliases = "{$this->alias}{$alias} {$joins} ";
}
return "UPDATE {$table} {$aliases}SET {$fields} {$conditions}";
case 'delete':
if (!empty($alias)) {
$aliases = "{$this->alias}{$alias} {$joins} ";
}
return "DELETE {$alias} FROM {$table} {$aliases}{$conditions}";
case 'schema':
foreach (array('columns', 'indexes', 'tableParameters') as $var) {
if (is_array(${$var})) {
${$var} = "\t" . join(",\n\t", array_filter(${$var}));
} else {
${$var} = '';
}
}
if (trim($indexes) !== '') {
$columns .= ',';
}
return "CREATE TABLE {$table} (\n{$columns}{$indexes}) {$tableParameters};";
case 'alter':
return;
}
}
/**
* Merges a mixed set of string/array conditions
*
* @param mixed $query
* @param mixed $assoc
* @return array
*/
protected function _mergeConditions($query, $assoc) {
if (empty($assoc)) {
return $query;
}
if (is_array($query)) {
return array_merge((array)$assoc, $query);
}
if (!empty($query)) {
$query = array($query);
if (is_array($assoc)) {
$query = array_merge($query, $assoc);
} else {
$query[] = $assoc;
}
return $query;
}
return $assoc;
}
/**
* Generates and executes an SQL UPDATE statement for given model, fields, and values.
* For databases that do not support aliases in UPDATE queries.
*
* @param Model $model
* @param array $fields
* @param array $values
* @param mixed $conditions
* @return boolean Success
*/
public function update(Model $model, $fields = array(), $values = null, $conditions = null) {
if ($values == null) {
$combined = $fields;
} else {
$combined = array_combine($fields, $values);
}
$fields = implode(', ', $this->_prepareUpdateFields($model, $combined, empty($conditions)));
$alias = $joins = null;
$table = $this->fullTableName($model);
$conditions = $this->_matchRecords($model, $conditions);
if ($conditions === false) {
return false;
}
$query = compact('table', 'alias', 'joins', 'fields', 'conditions');
if (!$this->execute($this->renderStatement('update', $query))) {
$model->onError();
return false;
}
return true;
}
/**
* Quotes and prepares fields and values for an SQL UPDATE statement
*
* @param Model $model
* @param array $fields
* @param boolean $quoteValues If values should be quoted, or treated as SQL snippets
* @param boolean $alias Include the model alias in the field name
* @return array Fields and values, quoted and prepared
*/
protected function _prepareUpdateFields(Model $model, $fields, $quoteValues = true, $alias = false) {
$quotedAlias = $this->startQuote . $model->alias . $this->endQuote;
$updates = array();
foreach ($fields as $field => $value) {
if ($alias && strpos($field, '.') === false) {
$quoted = $model->escapeField($field);
} elseif (!$alias && strpos($field, '.') !== false) {
$quoted = $this->name(str_replace($quotedAlias . '.', '', str_replace(
$model->alias . '.', '', $field
)));
} else {
$quoted = $this->name($field);
}
if ($value === null) {
$updates[] = $quoted . ' = NULL';
continue;
}
$update = $quoted . ' = ';
if ($quoteValues) {
$update .= $this->value($value, $model->getColumnType($field));
} elseif ($model->getColumnType($field) == 'boolean' && (is_int($value) || is_bool($value))) {
$update .= $this->boolean($value, true);
} elseif (!$alias) {
$update .= str_replace($quotedAlias . '.', '', str_replace(
$model->alias . '.', '', $value
));
} else {
$update .= $value;
}
$updates[] = $update;
}
return $updates;
}
/**
* Generates and executes an SQL DELETE statement.
* For databases that do not support aliases in UPDATE queries.
*
* @param Model $model
* @param mixed $conditions
* @return boolean Success
*/
public function delete(Model $model, $conditions = null) {
$alias = $joins = null;
$table = $this->fullTableName($model);
$conditions = $this->_matchRecords($model, $conditions);
if ($conditions === false) {
return false;
}
if ($this->execute($this->renderStatement('delete', compact('alias', 'table', 'joins', 'conditions'))) === false) {
$model->onError();
return false;
}
return true;
}
/**
* Gets a list of record IDs for the given conditions. Used for multi-record updates and deletes
* in databases that do not support aliases in UPDATE/DELETE queries.
*
* @param Model $model
* @param mixed $conditions
* @return array List of record IDs
*/
protected function _matchRecords(Model $model, $conditions = null) {
if ($conditions === true) {
$conditions = $this->conditions(true);
} elseif ($conditions === null) {
$conditions = $this->conditions($this->defaultConditions($model, $conditions, false), true, true, $model);
} else {
$noJoin = true;
foreach ($conditions as $field => $value) {
$originalField = $field;
if (strpos($field, '.') !== false) {
list($alias, $field) = explode('.', $field);
$field = ltrim($field, $this->startQuote);
$field = rtrim($field, $this->endQuote);
}
if (!$model->hasField($field)) {
$noJoin = false;
break;
}
if ($field !== $originalField) {
$conditions[$field] = $value;
unset($conditions[$originalField]);
}
}
if ($noJoin === true) {
return $this->conditions($conditions);
}
$idList = $model->find('all', array(
'fields' => "{$model->alias}.{$model->primaryKey}",
'conditions' => $conditions
));
if (empty($idList)) {
return false;
}
$conditions = $this->conditions(array(
$model->primaryKey => Hash::extract($idList, "{n}.{$model->alias}.{$model->primaryKey}")
));
}
return $conditions;
}
/**
* Returns an array of SQL JOIN fragments from a model's associations
*
* @param Model $model
* @return array
*/
protected function _getJoins(Model $model) {
$join = array();
$joins = array_merge($model->getAssociated('hasOne'), $model->getAssociated('belongsTo'));
foreach ($joins as $assoc) {
if (isset($model->{$assoc}) && $model->useDbConfig == $model->{$assoc}->useDbConfig && $model->{$assoc}->getDataSource()) {
$assocData = $model->getAssociated($assoc);
$join[] = $this->buildJoinStatement(array(
'table' => $model->{$assoc},
'alias' => $assoc,
'type' => isset($assocData['type']) ? $assocData['type'] : 'LEFT',
'conditions' => trim($this->conditions(
$this->_mergeConditions($assocData['conditions'], $this->getConstraint($assocData['association'], $model, $model->{$assoc}, $assoc, $assocData)),
true, false, $model
))
));
}
}
return $join;
}
/**
* Returns an SQL calculation, i.e. COUNT() or MAX()
*
* @param Model $model
* @param string $func Lowercase name of SQL function, i.e. 'count' or 'max'
* @param array $params Function parameters (any values must be quoted manually)
* @return string An SQL calculation function
*/
public function calculate(Model $model, $func, $params = array()) {
$params = (array)$params;
switch (strtolower($func)) {
case 'count':
if (!isset($params[0])) {
$params[0] = '*';
}
if (!isset($params[1])) {
$params[1] = 'count';
}
if (is_object($model) && $model->isVirtualField($params[0])) {
$arg = $this->_quoteFields($model->getVirtualField($params[0]));
} else {
$arg = $this->name($params[0]);
}
return 'COUNT(' . $arg . ') AS ' . $this->name($params[1]);
case 'max':
case 'min':
if (!isset($params[1])) {
$params[1] = $params[0];
}
if (is_object($model) && $model->isVirtualField($params[0])) {
$arg = $this->_quoteFields($model->getVirtualField($params[0]));
} else {
$arg = $this->name($params[0]);
}
return strtoupper($func) . '(' . $arg . ') AS ' . $this->name($params[1]);
break;
}
}
/**
* Deletes all the records in a table and resets the count of the auto-incrementing
* primary key, where applicable.
*
* @param mixed $table A string or model class representing the table to be truncated
* @return boolean SQL TRUNCATE TABLE statement, false if not applicable.
*/
public function truncate($table) {
return $this->execute('TRUNCATE TABLE ' . $this->fullTableName($table));
}
/**
* Check if the server support nested transactions
*
* @return boolean
*/
public function supportNestedTransaction() {
return false;
}
/**
* Begin a transaction
*
* @return boolean True on success, false on fail
* (i.e. if the database/model does not support transactions,
* or a transaction has not started).
*/
public function begin() {
if ($this->_transactionStarted) {
if ($this->supportNestedTransaction()) {
return $this->_beginNested();
}
$this->_transactionNesting++;
return $this->_transactionStarted;
}
$this->_transactionNesting = 0;
if ($this->fullDebug) {
$this->logQuery('BEGIN');
}
return $this->_transactionStarted = $this->_connection->beginTransaction();
}
/**
* Begin a nested transaction
*
* @return boolean
*/
protected function _beginNested() {
$query = 'SAVEPOINT LEVEL' . ++$this->_transactionNesting;
if ($this->fullDebug) {
$this->logQuery($query);
}
$this->_connection->exec($query);
return true;
}
/**
* Commit a transaction
*
* @return boolean True on success, false on fail
* (i.e. if the database/model does not support transactions,
* or a transaction has not started).
*/
public function commit() {
if (!$this->_transactionStarted) {
return false;
}
if ($this->_transactionNesting === 0) {
if ($this->fullDebug) {
$this->logQuery('COMMIT');
}
$this->_transactionStarted = false;
return $this->_connection->commit();
}
if ($this->supportNestedTransaction()) {
return $this->_commitNested();
}
$this->_transactionNesting--;
return true;
}
/**
* Commit a nested transaction
*
* @return boolean
*/
protected function _commitNested() {
$query = 'RELEASE SAVEPOINT LEVEL' . $this->_transactionNesting--;
if ($this->fullDebug) {
$this->logQuery($query);
}
$this->_connection->exec($query);
return true;
}
/**
* Rollback a transaction
*
* @return boolean True on success, false on fail
* (i.e. if the database/model does not support transactions,
* or a transaction has not started).
*/
public function rollback() {
if (!$this->_transactionStarted) {
return false;
}
if ($this->_transactionNesting === 0) {
if ($this->fullDebug) {
$this->logQuery('ROLLBACK');
}
$this->_transactionStarted = false;
return $this->_connection->rollBack();
}
if ($this->supportNestedTransaction()) {
return $this->_rollbackNested();
}
$this->_transactionNesting--;
return true;
}
/**
* Rollback a nested transaction
*
* @return boolean
*/
protected function _rollbackNested() {
$query = 'ROLLBACK TO SAVEPOINT LEVEL' . $this->_transactionNesting--;
if ($this->fullDebug) {
$this->logQuery($query);
}
$this->_connection->exec($query);
return true;
}
/**
* Returns the ID generated from the previous INSERT operation.
*
* @param mixed $source
* @return mixed
*/
public function lastInsertId($source = null) {
return $this->_connection->lastInsertId();
}
/**
* Creates a default set of conditions from the model if $conditions is null/empty.
* If conditions are supplied then they will be returned. If a model doesn't exist and no conditions
* were provided either null or false will be returned based on what was input.
*
* @param Model $model
* @param mixed $conditions Array of conditions, conditions string, null or false. If an array of conditions,
* or string conditions those conditions will be returned. With other values the model's existence will be checked.
* If the model doesn't exist a null or false will be returned depending on the input value.
* @param boolean $useAlias Use model aliases rather than table names when generating conditions
* @return mixed Either null, false, $conditions or an array of default conditions to use.
* @see DboSource::update()
* @see DboSource::conditions()
*/
public function defaultConditions(Model $model, $conditions, $useAlias = true) {
if (!empty($conditions)) {
return $conditions;
}
$exists = $model->exists();
if (!$exists && $conditions !== null) {
return false;
} elseif (!$exists) {
return null;
}
$alias = $model->alias;
if (!$useAlias) {
$alias = $this->fullTableName($model, false);
}
return array("{$alias}.{$model->primaryKey}" => $model->getID());
}
/**
* Returns a key formatted like a string Model.fieldname(i.e. Post.title, or Country.name)
*
* @param Model $model
* @param string $key
* @param string $assoc
* @return string
*/
public function resolveKey(Model $model, $key, $assoc = null) {
if (strpos('.', $key) !== false) {
return $this->name($model->alias) . '.' . $this->name($key);
}
return $key;
}
/**
* Private helper method to remove query metadata in given data array.
*
* @param array $data
* @return array
*/
protected function _scrubQueryData($data) {
static $base = null;
if ($base === null) {
$base = array_fill_keys(array('conditions', 'fields', 'joins', 'order', 'limit', 'offset', 'group'), array());
$base['callbacks'] = null;
}
return (array)$data + $base;
}
/**
* Converts model virtual fields into sql expressions to be fetched later
*
* @param Model $model
* @param string $alias Alias table name
* @param mixed $fields virtual fields to be used on query
* @return array
*/
protected function _constructVirtualFields(Model $model, $alias, $fields) {
$virtual = array();
foreach ($fields as $field) {
$virtualField = $this->name($alias . $this->virtualFieldSeparator . $field);
$expression = $this->_quoteFields($model->getVirtualField($field));
$virtual[] = '(' . $expression . ") {$this->alias} {$virtualField}";
}
return $virtual;
}
/**
* Generates the fields list of an SQL query.
*
* @param Model $model
* @param string $alias Alias table name
* @param mixed $fields
* @param boolean $quote If false, returns fields array unquoted
* @return array
*/
public function fields(Model $model, $alias = null, $fields = array(), $quote = true) {
if (empty($alias)) {
$alias = $model->alias;
}
$virtualFields = $model->getVirtualField();
$cacheKey = array(
$alias,
get_class($model),
$model->alias,
$virtualFields,
$fields,
$quote
);
$cacheKey = md5(serialize($cacheKey));
if ($return = $this->cacheMethod(__FUNCTION__, $cacheKey)) {
return $return;
}
$allFields = empty($fields);
if ($allFields) {
$fields = array_keys($model->schema());
} elseif (!is_array($fields)) {
$fields = String::tokenize($fields);
}
$fields = array_values(array_filter($fields));
$allFields = $allFields || in_array('*', $fields) || in_array($model->alias . '.*', $fields);
$virtual = array();
if (!empty($virtualFields)) {
$virtualKeys = array_keys($virtualFields);
foreach ($virtualKeys as $field) {
$virtualKeys[] = $model->alias . '.' . $field;
}
$virtual = ($allFields) ? $virtualKeys : array_intersect($virtualKeys, $fields);
foreach ($virtual as $i => $field) {
if (strpos($field, '.') !== false) {
$virtual[$i] = str_replace($model->alias . '.', '', $field);
}
$fields = array_diff($fields, array($field));
}
$fields = array_values($fields);
}
if (!$quote) {
if (!empty($virtual)) {
$fields = array_merge($fields, $this->_constructVirtualFields($model, $alias, $virtual));
}
return $fields;
}
$count = count($fields);
if ($count >= 1 && !in_array($fields[0], array('*', 'COUNT(*)'))) {
for ($i = 0; $i < $count; $i++) {
if (is_string($fields[$i]) && in_array($fields[$i], $virtual)) {
unset($fields[$i]);
continue;
}
if (is_object($fields[$i]) && isset($fields[$i]->type) && $fields[$i]->type === 'expression') {
$fields[$i] = $fields[$i]->value;
} elseif (preg_match('/^\(.*\)\s' . $this->alias . '.*/i', $fields[$i])) {
continue;
} elseif (!preg_match('/^.+\\(.*\\)/', $fields[$i])) {
$prepend = '';
if (strpos($fields[$i], 'DISTINCT') !== false) {
$prepend = 'DISTINCT ';
$fields[$i] = trim(str_replace('DISTINCT', '', $fields[$i]));
}
$dot = strpos($fields[$i], '.');
if ($dot === false) {
$prefix = !(
strpos($fields[$i], ' ') !== false ||
strpos($fields[$i], '(') !== false
);
$fields[$i] = $this->name(($prefix ? $alias . '.' : '') . $fields[$i]);
} else {
if (strpos($fields[$i], ',') === false) {
$build = explode('.', $fields[$i]);
if (!Hash::numeric($build)) {
$fields[$i] = $this->name(implode('.', $build));
}
}
}
$fields[$i] = $prepend . $fields[$i];
} elseif (preg_match('/\(([\.\w]+)\)/', $fields[$i], $field)) {
if (isset($field[1])) {
if (strpos($field[1], '.') === false) {
$field[1] = $this->name($alias . '.' . $field[1]);
} else {
$field[0] = explode('.', $field[1]);
if (!Hash::numeric($field[0])) {
$field[0] = implode('.', array_map(array(&$this, 'name'), $field[0]));
$fields[$i] = preg_replace('/\(' . $field[1] . '\)/', '(' . $field[0] . ')', $fields[$i], 1);
}
}
}
}
}
}
if (!empty($virtual)) {
$fields = array_merge($fields, $this->_constructVirtualFields($model, $alias, $virtual));
}
return $this->cacheMethod(__FUNCTION__, $cacheKey, array_unique($fields));
}
/**
* Creates a WHERE clause by parsing given conditions data. If an array or string
* conditions are provided those conditions will be parsed and quoted. If a boolean
* is given it will be integer cast as condition. Null will return 1 = 1.
*
* Results of this method are stored in a memory cache. This improves performance, but
* because the method uses a simple hashing algorithm it can infrequently have collisions.
* Setting DboSource::$cacheMethods to false will disable the memory cache.
*
* @param mixed $conditions Array or string of conditions, or any value.
* @param boolean $quoteValues If true, values should be quoted
* @param boolean $where If true, "WHERE " will be prepended to the return value
* @param Model $model A reference to the Model instance making the query
* @return string SQL fragment
*/
public function conditions($conditions, $quoteValues = true, $where = true, $model = null) {
$clause = $out = '';
if ($where) {
$clause = ' WHERE ';
}
if (is_array($conditions) && !empty($conditions)) {
$out = $this->conditionKeysToString($conditions, $quoteValues, $model);
if (empty($out)) {
return $clause . ' 1 = 1';
}
return $clause . implode(' AND ', $out);
}
if (is_bool($conditions)) {
return $clause . (int)$conditions . ' = 1';
}
if (empty($conditions) || trim($conditions) === '') {
return $clause . '1 = 1';
}
$clauses = '/^WHERE\\x20|^GROUP\\x20BY\\x20|^HAVING\\x20|^ORDER\\x20BY\\x20/i';
if (preg_match($clauses, $conditions, $match)) {
$clause = '';
}
$conditions = $this->_quoteFields($conditions);
return $clause . $conditions;
}
/**
* Creates a WHERE clause by parsing given conditions array. Used by DboSource::conditions().
*
* @param array $conditions Array or string of conditions
* @param boolean $quoteValues If true, values should be quoted
* @param Model $model A reference to the Model instance making the query
* @return string SQL fragment
*/
public function conditionKeysToString($conditions, $quoteValues = true, $model = null) {
$out = array();
$data = $columnType = null;
$bool = array('and', 'or', 'not', 'and not', 'or not', 'xor', '||', '&&');
foreach ($conditions as $key => $value) {
$join = ' AND ';
$not = null;
if (is_array($value)) {
$valueInsert = (
!empty($value) &&
(substr_count($key, '?') === count($value) || substr_count($key, ':') === count($value))
);
}
if (is_numeric($key) && empty($value)) {
continue;
} elseif (is_numeric($key) && is_string($value)) {
$out[] = $not . $this->_quoteFields($value);
} elseif ((is_numeric($key) && is_array($value)) || in_array(strtolower(trim($key)), $bool)) {
if (in_array(strtolower(trim($key)), $bool)) {
$join = ' ' . strtoupper($key) . ' ';
} else {
$key = $join;
}
$value = $this->conditionKeysToString($value, $quoteValues, $model);
if (strpos($join, 'NOT') !== false) {
if (strtoupper(trim($key)) === 'NOT') {
$key = 'AND ' . trim($key);
}
$not = 'NOT ';
}
if (empty($value[1])) {
if ($not) {
$out[] = $not . '(' . $value[0] . ')';
} else {
$out[] = $value[0];
}
} else {
$out[] = '(' . $not . '(' . implode(') ' . strtoupper($key) . ' (', $value) . '))';
}
} else {
if (is_object($value) && isset($value->type)) {
if ($value->type === 'identifier') {
$data .= $this->name($key) . ' = ' . $this->name($value->value);
} elseif ($value->type === 'expression') {
if (is_numeric($key)) {
$data .= $value->value;
} else {
$data .= $this->name($key) . ' = ' . $value->value;
}
}
} elseif (is_array($value) && !empty($value) && !$valueInsert) {
$keys = array_keys($value);
if ($keys === array_values($keys)) {
$count = count($value);
if ($count === 1 && !preg_match("/\s+NOT$/", $key)) {
$data = $this->_quoteFields($key) . ' = (';
} else {
$data = $this->_quoteFields($key) . ' IN (';
}
if ($quoteValues) {
if (is_object($model)) {
$columnType = $model->getColumnType($key);
}
$data .= implode(', ', $this->value($value, $columnType));
}
$data .= ')';
} else {
$ret = $this->conditionKeysToString($value, $quoteValues, $model);
if (count($ret) > 1) {
$data = '(' . implode(') AND (', $ret) . ')';
} elseif (isset($ret[0])) {
$data = $ret[0];
}
}
} elseif (is_numeric($key) && !empty($value)) {
$data = $this->_quoteFields($value);
} else {
$data = $this->_parseKey($model, trim($key), $value);
}
if ($data != null) {
$out[] = $data;
$data = null;
}
}
}
return $out;
}
/**
* Extracts a Model.field identifier and an SQL condition operator from a string, formats
* and inserts values, and composes them into an SQL snippet.
*
* @param Model $model Model object initiating the query
* @param string $key An SQL key snippet containing a field and optional SQL operator
* @param mixed $value The value(s) to be inserted in the string
* @return string
*/
protected function _parseKey($model, $key, $value) {
$operatorMatch = '/^(((' . implode(')|(', $this->_sqlOps);
$operatorMatch .= ')\\x20?)|<[>=]?(?![^>]+>)\\x20?|[>=!]{1,3}(?!<)\\x20?)/is';
$bound = (strpos($key, '?') !== false || (is_array($value) && strpos($key, ':') !== false));
if (strpos($key, ' ') === false) {
$operator = '=';
} else {
list($key, $operator) = explode(' ', trim($key), 2);
if (!preg_match($operatorMatch, trim($operator)) && strpos($operator, ' ') !== false) {
$key = $key . ' ' . $operator;
$split = strrpos($key, ' ');
$operator = substr($key, $split);
$key = substr($key, 0, $split);
}
}
$virtual = false;
if (is_object($model) && $model->isVirtualField($key)) {
$key = $this->_quoteFields($model->getVirtualField($key));
$virtual = true;
}
$type = is_object($model) ? $model->getColumnType($key) : null;
$null = $value === null || (is_array($value) && empty($value));
if (strtolower($operator) === 'not') {
$data = $this->conditionKeysToString(
array($operator => array($key => $value)), true, $model
);
return $data[0];
}
$value = $this->value($value, $type);
if (!$virtual && $key !== '?') {
$isKey = (strpos($key, '(') !== false || strpos($key, ')') !== false);
$key = $isKey ? $this->_quoteFields($key) : $this->name($key);
}
if ($bound) {
return String::insert($key . ' ' . trim($operator), $value);
}
if (!preg_match($operatorMatch, trim($operator))) {
$operator .= ' =';
}
$operator = trim($operator);
if (is_array($value)) {
$value = implode(', ', $value);
switch ($operator) {
case '=':
$operator = 'IN';
break;
case '!=':
case '<>':
$operator = 'NOT IN';
break;
}
$value = "({$value})";
} elseif ($null || $value === 'NULL') {
switch ($operator) {
case '=':
$operator = 'IS';
break;
case '!=':
case '<>':
$operator = 'IS NOT';
break;
}
}
if ($virtual) {
return "({$key}) {$operator} {$value}";
}
return "{$key} {$operator} {$value}";
}
/**
* Quotes Model.fields
*
* @param string $conditions
* @return string or false if no match
*/
protected function _quoteFields($conditions) {
$start = $end = null;
$original = $conditions;
if (!empty($this->startQuote)) {
$start = preg_quote($this->startQuote);
}
if (!empty($this->endQuote)) {
$end = preg_quote($this->endQuote);
}
$conditions = str_replace(array($start, $end), '', $conditions);
$conditions = preg_replace_callback('/(?:[\'\"][^\'\"\\\]*(?:\\\.[^\'\"\\\]*)*[\'\"])|([a-z0-9_' . $start . $end . ']*\\.[a-z0-9_' . $start . $end . ']*)/i', array(&$this, '_quoteMatchedField'), $conditions);
if ($conditions !== null) {
return $conditions;
}
return $original;
}
/**
* Auxiliary function to quote matches `Model.fields` from a preg_replace_callback call
*
* @param string $match matched string
* @return string quoted string
*/
protected function _quoteMatchedField($match) {
if (is_numeric($match[0])) {
return $match[0];
}
return $this->name($match[0]);
}
/**
* Returns a limit statement in the correct format for the particular database.
*
* @param integer $limit Limit of results returned
* @param integer $offset Offset from which to start results
* @return string SQL limit/offset statement
*/
public function limit($limit, $offset = null) {
if ($limit) {
$rt = '';
if (!strpos(strtolower($limit), 'limit')) {
$rt = ' LIMIT';
}
if ($offset) {
$rt .= ' ' . $offset . ',';
}
$rt .= ' ' . $limit;
return $rt;
}
return null;
}
/**
* Returns an ORDER BY clause as a string.
*
* @param array|string $keys Field reference, as a key (i.e. Post.title)
* @param string $direction Direction (ASC or DESC)
* @param Model $model model reference (used to look for virtual field)
* @return string ORDER BY clause
*/
public function order($keys, $direction = 'ASC', $model = null) {
if (!is_array($keys)) {
$keys = array($keys);
}
$keys = array_filter($keys);
$result = array();
while (!empty($keys)) {
list($key, $dir) = each($keys);
array_shift($keys);
if (is_numeric($key)) {
$key = $dir;
$dir = $direction;
}
if (is_string($key) && strpos($key, ',') !== false && !preg_match('/\(.+\,.+\)/', $key)) {
$key = array_map('trim', explode(',', $key));
}
if (is_array($key)) {
//Flatten the array
$key = array_reverse($key, true);
foreach ($key as $k => $v) {
if (is_numeric($k)) {
array_unshift($keys, $v);
} else {
$keys = array($k => $v) + $keys;
}
}
continue;
} elseif (is_object($key) && isset($key->type) && $key->type === 'expression') {
$result[] = $key->value;
continue;
}
if (preg_match('/\\x20(ASC|DESC).*/i', $key, $_dir)) {
$dir = $_dir[0];
$key = preg_replace('/\\x20(ASC|DESC).*/i', '', $key);
}
$key = trim($key);
if (is_object($model) && $model->isVirtualField($key)) {
$key = '(' . $this->_quoteFields($model->getVirtualField($key)) . ')';
}
list($alias, $field) = pluginSplit($key);
if (is_object($model) && $alias !== $model->alias && is_object($model->{$alias}) && $model->{$alias}->isVirtualField($key)) {
$key = '(' . $this->_quoteFields($model->{$alias}->getVirtualField($key)) . ')';
}
if (strpos($key, '.')) {
$key = preg_replace_callback('/([a-zA-Z0-9_-]{1,})\\.([a-zA-Z0-9_-]{1,})/', array(&$this, '_quoteMatchedField'), $key);
}
if (!preg_match('/\s/', $key) && strpos($key, '.') === false) {
$key = $this->name($key);
}
$key .= ' ' . trim($dir);
$result[] = $key;
}
if (!empty($result)) {
return ' ORDER BY ' . implode(', ', $result);
}
return '';
}
/**
* Create a GROUP BY SQL clause
*
* @param string $group Group By Condition
* @param Model $model
* @return string string condition or null
*/
public function group($group, $model = null) {
if ($group) {
if (!is_array($group)) {
$group = array($group);
}
foreach ($group as $index => $key) {
if (is_object($model) && $model->isVirtualField($key)) {
$group[$index] = '(' . $model->getVirtualField($key) . ')';
}
}
$group = implode(', ', $group);
return ' GROUP BY ' . $this->_quoteFields($group);
}
return null;
}
/**
* Disconnects database, kills the connection and says the connection is closed.
*
* @return void
*/
public function close() {
$this->disconnect();
}
/**
* Checks if the specified table contains any record matching specified SQL
*
* @param Model $Model Model to search
* @param string $sql SQL WHERE clause (condition only, not the "WHERE" part)
* @return boolean True if the table has a matching record, else false
*/
public function hasAny(Model $Model, $sql) {
$sql = $this->conditions($sql);
$table = $this->fullTableName($Model);
$alias = $this->alias . $this->name($Model->alias);
$where = $sql ? "{$sql}" : ' WHERE 1 = 1';
$id = $Model->escapeField();
$out = $this->fetchRow("SELECT COUNT({$id}) {$this->alias}count FROM {$table} {$alias}{$where}");
if (is_array($out)) {
return $out[0]['count'];
}
return false;
}
/**
* Gets the length of a database-native column description, or null if no length
*
* @param string $real Real database-layer column type (i.e. "varchar(255)")
* @return mixed An integer or string representing the length of the column, or null for unknown length.
*/
public function length($real) {
if (!preg_match_all('/([\w\s]+)(?:\((\d+)(?:,(\d+))?\))?(\sunsigned)?(\szerofill)?/', $real, $result)) {
$col = str_replace(array(')', 'unsigned'), '', $real);
$limit = null;
if (strpos($col, '(') !== false) {
list($col, $limit) = explode('(', $col);
}
if ($limit !== null) {
return intval($limit);
}
return null;
}
$types = array(
'int' => 1, 'tinyint' => 1, 'smallint' => 1, 'mediumint' => 1, 'integer' => 1, 'bigint' => 1
);
list($real, $type, $length, $offset, $sign, $zerofill) = $result;
$typeArr = $type;
$type = $type[0];
$length = $length[0];
$offset = $offset[0];
$isFloat = in_array($type, array('dec', 'decimal', 'float', 'numeric', 'double'));
if ($isFloat && $offset) {
return $length . ',' . $offset;
}
if (($real[0] == $type) && (count($real) === 1)) {
return null;
}
if (isset($types[$type])) {
$length += $types[$type];
if (!empty($sign)) {
$length--;
}
} elseif (in_array($type, array('enum', 'set'))) {
$length = 0;
foreach ($typeArr as $key => $enumValue) {
if ($key === 0) {
continue;
}
$tmpLength = strlen($enumValue);
if ($tmpLength > $length) {
$length = $tmpLength;
}
}
}
return intval($length);
}
/**
* Translates between PHP boolean values and Database (faked) boolean values
*
* @param mixed $data Value to be translated
* @param boolean $quote
* @return string|boolean Converted boolean value
*/
public function boolean($data, $quote = false) {
if ($quote) {
return !empty($data) ? '1' : '0';
}
return !empty($data);
}
/**
* Inserts multiple values into a table
*
* @param string $table The table being inserted into.
* @param array $fields The array of field/column names being inserted.
* @param array $values The array of values to insert. The values should
* be an array of rows. Each row should have values keyed by the column name.
* Each row must have the values in the same order as $fields.
* @return boolean
*/
public function insertMulti($table, $fields, $values) {
$table = $this->fullTableName($table);
$holder = implode(',', array_fill(0, count($fields), '?'));
$fields = implode(', ', array_map(array(&$this, 'name'), $fields));
$pdoMap = array(
'integer' => PDO::PARAM_INT,
'float' => PDO::PARAM_STR,
'boolean' => PDO::PARAM_BOOL,
'string' => PDO::PARAM_STR,
'text' => PDO::PARAM_STR
);
$columnMap = array();
$sql = "INSERT INTO {$table} ({$fields}) VALUES ({$holder})";
$statement =