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doctrine2/lib/Doctrine/Connection.php

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<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
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Doctrine::autoload('Doctrine_Configurable');
/**
* Doctrine_Connection
*
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* A wrapper layer on top of PDO / Doctrine_Adapter
*
* Doctrine_Connection is the heart of any Doctrine based application.
*
* 1. Event listeners
* An easy to use, pluggable eventlistener architecture. Aspects such as
* logging, query profiling and caching can be easily implemented through
* the use of these listeners
*
* 2. Lazy-connecting
* Creating an instance of Doctrine_Connection does not connect
* to database. Connecting to database is only invoked when actually needed
* (for example when query() is being called)
*
* 3. Convenience methods
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* Doctrine_Connection provides many convenience methods such as fetchAll(), fetchOne() etc.
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*
* 4. Modular structure
* Higher level functionality such as schema importing, exporting, sequence handling etc.
* is divided into modules. For a full list of connection modules see
* Doctrine_Connection::$_modules
*
* @package Doctrine
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @category Object Relational Mapping
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision$
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Lukas Smith <smith@pooteeweet.org> (MDB2 library)
*/
abstract class Doctrine_Connection extends Doctrine_Configurable implements Countable, IteratorAggregate
{
/**
* @var $dbh the database handler
*/
protected $dbh;
/**
* @var array $tables an array containing all the initialized Doctrine_Table objects
* keys representing Doctrine_Table component names and values as Doctrine_Table objects
*/
protected $tables = array();
/**
* @var array $exported
*/
protected $exported = array();
/**
* @var string $driverName the name of this connection driver
*/
protected $driverName;
/**
* @var boolean $isConnected whether or not a connection has been established
*/
protected $isConnected = false;
/**
* @var array $supported an array containing all features this driver supports,
* keys representing feature names and values as
* one of the following (true, false, 'emulated')
*/
protected $supported = array();
/**
* @var array $pendingAttributes An array of pending attributes. When setting attributes
* no connection is needed. When connected all the pending
* attributes are passed to the underlying adapter (usually PDO) instance.
*/
protected $pendingAttributes = array();
/**
* @var array $modules an array containing all modules
* transaction Doctrine_Transaction driver, handles savepoint and transaction isolation abstraction
*
* expression Doctrine_Expression driver, handles expression abstraction
*
* dataDict Doctrine_DataDict driver, handles datatype abstraction
*
* export Doctrine_Export driver, handles db structure modification abstraction (contains
* methods such as alterTable, createConstraint etc.)
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* import Doctrine_Import driver, handles db schema reading
*
* sequence Doctrine_Sequence driver, handles sequential id generation and retrieval
*
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* unitOfWork Doctrine_Connection_UnitOfWork handles many orm functionalities such as object
* deletion and saving
*
* formatter Doctrine_Formatter handles data formatting, quoting and escaping
*
* @see Doctrine_Connection::__get()
* @see Doctrine_DataDict
* @see Doctrine_Expression
* @see Doctrine_Export
* @see Doctrine_Transaction
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* @see Doctrine_Sequence
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* @see Doctrine_Connection_UnitOfWork
* @see Doctrine_Formatter
*/
private $modules = array('transaction' => false,
'expression' => false,
'dataDict' => false,
'export' => false,
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'import' => false,
'sequence' => false,
'unitOfWork' => false,
'formatter' => false,
'util' => false,
);
/**
* @var array $properties an array of connection properties
*/
protected $properties = array('sql_comments' => array(array('start' => '--', 'end' => "\n", 'escape' => false),
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array('start' => '/*', 'end' => '*/', 'escape' => false)),
'identifier_quoting' => array('start' => '"', 'end' => '"','escape' => '"'),
'string_quoting' => array('start' => "'",
'end' => "'",
'escape' => false,
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'escape_pattern' => false),
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'wildcards' => array('%', '_'),
'varchar_max_length' => 255,
);
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/**
* @var array $serverInfo
*/
protected $serverInfo = array();
protected $options = array();
/**
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* @var array $availableDrivers an array containing all availible drivers
*/
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private static $availableDrivers = array(
'Mysql',
'Pgsql',
'Oracle',
'Informix',
'Mssql',
'Sqlite',
'Firebird'
);
/**
* the constructor
*
* @param Doctrine_Manager $manager the manager object
* @param PDO|Doctrine_Adapter_Interface $adapter database driver
*/
public function __construct(Doctrine_Manager $manager, $adapter, $user = null, $pass = null)
{
if ( ! ($adapter instanceof PDO) && ! in_array('Doctrine_Adapter_Interface', class_implements($adapter))) {
if ( ! is_string($adapter)) {
throw new Doctrine_Connection_Exception('Data source name should be a string, ' . get_class($adapter) . ' given.');
}
$dsn = $adapter;
// check if dsn is PEAR-like or not
if ( ! isset($user) || strpos($dsn, '://')) {
$a = self::parseDSN($dsn);
extract($a);
} else {
$e = explode(':', $dsn);
if($e[0] == 'uri') {
$e[0] = 'odbc';
}
$this->pendingAttributes[Doctrine::ATTR_DRIVER_NAME] = $e[0];
}
$this->options['dsn'] = $dsn;
$this->options['username'] = $user;
$this->options['password'] = $pass;
} else {
$this->dbh = $adapter;
$this->isConnected = true;
}
$this->setParent($manager);
$this->dbh->setAttribute(PDO::ATTR_CASE, PDO::CASE_NATURAL);
$this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$this->getAttribute(Doctrine::ATTR_LISTENER)->onOpen($this);
}
/**
* getAttribute
* retrieves a database connection attribute
*
* @param integer $attribute
* @return mixed
*/
public function getAttribute($attribute)
{
if ($attribute >= 100) {
if ( ! isset($this->attributes[$attribute])) {
return $this->parent->getAttribute($attribute);
}
return $this->attributes[$attribute];
}
if ($this->isConnected) {
try {
return $this->dbh->getAttribute($attribute);
} catch(Exception $e) {
throw new Doctrine_Connection_Exception('Attribute ' . $attribute . ' not found.');
}
} else {
if ( ! isset($this->pendingAttributes[$attribute])) {
$this->connect();
$this->getAttribute($attribute);
}
return $this->pendingAttributes[$attribute];
}
}
/**
* returns an array of available PDO drivers
*/
public static function getAvailableDrivers()
{
return PDO::getAvailableDrivers();
}
/**
* setAttribute
* sets an attribute
*
* @param integer $attribute
* @param mixed $value
* @return boolean
*/
public function setAttribute($attribute, $value)
{
if ($attribute >= 100) {
parent::setAttribute($attribute, $value);
} else {
if ($this->isConnected) {
$this->dbh->setAttribute($attribute, $value);
} else {
$this->pendingAttributes[$attribute] = $value;
}
}
return $this;
}
/**
* parseDSN
*
* @param string $dsn
* @return array Parsed contents of DSN
*/
public function parseDSN($dsn)
{
// silence any warnings
$parts = @parse_url($dsn);
$names = array('scheme', 'host', 'port', 'user', 'pass', 'path', 'query', 'fragment');
foreach ($names as $name) {
if ( ! isset($parts[$name])) {
$parts[$name] = null;
}
}
if (count($parts) == 0 || ! isset($parts['scheme'])) {
throw new Doctrine_Connection_Exception('Empty data source name');
}
$drivers = self::getAvailableDrivers();
$parts['scheme'] = self::driverName($parts['scheme']);
/**
if ( ! in_array($parts['scheme'], $drivers)) {
throw new Doctrine_Db_Exception('Driver '.$parts['scheme'].' not availible or extension not loaded');
}
*/
switch ($parts['scheme']) {
case 'sqlite':
if (isset($parts['host']) && $parts['host'] == ':memory') {
$parts['database'] = ':memory:';
$parts['dsn'] = 'sqlite::memory:';
}
break;
case 'mysql':
case 'informix':
case 'oci8':
case 'mssql':
case 'firebird':
case 'dblib':
case 'pgsql':
case 'odbc':
case 'mock':
case 'oracle':
if ( ! isset($parts['path']) || $parts['path'] == '/') {
throw new Doctrine_Connection_Exception('No database availible in data source name');
}
if (isset($parts['path'])) {
$parts['database'] = substr($parts['path'], 1);
}
if ( ! isset($parts['host'])) {
throw new Doctrine_Connection_Exception('No hostname set in data source name');
}
if (isset(self::$driverMap[$parts['scheme']])) {
$parts['scheme'] = self::$driverMap[$parts['scheme']];
}
$parts['dsn'] = $parts['scheme'] . ':host='
. $parts['host'] . ';dbname='
. $parts['database'];
if (isset($parts['port'])) {
// append port to dsn if supplied
$parts['dsn'] .= ';port=' . $parts['port'];
}
break;
default:
throw new Doctrine_Connection_Exception('Unknown driver '.$parts['scheme']);
}
$this->pendingAttributes[PDO::ATTR_DRIVER_NAME] = $parts['scheme'];
return $parts;
}
/**
* getName
* returns the name of this driver
*
* @return string the name of this driver
*/
public function getName()
{
return $this->driverName;
}
/**
* __get
* lazy loads given module and returns it
*
* @see Doctrine_DataDict
* @see Doctrine_Expression
* @see Doctrine_Export
* @see Doctrine_Transaction
* @see Doctrine_Connection::$modules all availible modules
* @param string $name the name of the module to get
* @throws Doctrine_Connection_Exception if trying to get an unknown module
* @return Doctrine_Connection_Module connection module
*/
public function __get($name)
{
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if (isset($this->properties[$name])) {
return $this->properties[$name];
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}
if ( ! isset($this->modules[$name])) {
throw new Doctrine_Connection_Exception('Unknown module / property ' . $name);
}
if ($this->modules[$name] === false) {
switch ($name) {
case 'unitOfWork':
$this->modules[$name] = new Doctrine_Connection_UnitOfWork($this);
break;
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case 'formatter':
$this->modules[$name] = new Doctrine_Formatter($this);
break;
default:
$class = 'Doctrine_' . ucwords($name) . '_' . $this->getName();
$this->modules[$name] = new $class($this);
}
}
return $this->modules[$name];
}
/**
* returns the manager that created this connection
*
* @return Doctrine_Manager
*/
public function getManager()
{
return $this->getParent();
}
/**
* returns the database handler of which this connection uses
*
* @return PDO the database handler
*/
public function getDbh()
{
return $this->dbh;
}
/**
* connect
* connects into database
*
* @return boolean
*/
public function connect()
{
if ($this->isConnected) {
return false;
}
$this->getListener()->onPreConnect($this);
$e = explode(':', $this->options['dsn']);
$found = false;
if (extension_loaded('pdo')) {
if (in_array($e[0], PDO::getAvailableDrivers())) {
$this->dbh = new PDO($this->options['dsn'], $this->options['username'], $this->options['password']);
$this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$found = true;
}
}
if ( ! $found) {
$class = 'Doctrine_Adapter_' . ucwords($e[0]);
if (class_exists($class)) {
$this->dbh = new $class($this->options['dsn'], $this->options['username'], $this->options['password']);
} else {
throw new Doctrine_Connection_Exception("Couldn't locate driver named " . $e[0]);
}
}
// attach the pending attributes to adapter
foreach($this->pendingAttributes as $attr => $value) {
// some drivers don't support setting this so we just skip it
if($attr == Doctrine::ATTR_DRIVER_NAME) {
continue;
}
$this->dbh->setAttribute($attr, $value);
}
$this->isConnected = true;
$this->getListener()->onConnect($this);
return true;
}
/**
* converts given driver name
*
* @param
*/
public function driverName($name)
{
}
/**
* supports
*
* @param string $feature the name of the feature
* @return boolean whether or not this drivers supports given feature
*/
public function supports($feature)
{
return (isset($this->supported[$feature])
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&& ($this->supported[$feature] === 'emulated'
|| $this->supported[$feature]));
}
/**
* Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
* query, except that if there is already a row in the table with the same
* key field values, the REPLACE query just updates its values instead of
* inserting a new row.
*
* The REPLACE type of query does not make part of the SQL standards. Since
* practically only MySQL and SQLIte implement it natively, this type of
* query isemulated through this method for other DBMS using standard types
* of queries inside a transaction to assure the atomicity of the operation.
*
* @param string name of the table on which the REPLACE query will
* be executed.
*
* @param array an associative array that describes the fields and the
* values that will be inserted or updated in the specified table. The
* indexes of the array are the names of all the fields of the table.
*
* The values of the array are values to be assigned to the specified field.
*
* @param array $keys an array containing all key fields (primary key fields
* or unique index fields) for this table
*
* the uniqueness of a row will be determined according to
* the provided key fields
*
* this method will fail if no key fields are specified
*
* @throws Doctrine_Connection_Exception if this driver doesn't support replace
* @throws Doctrine_Connection_Exception if some of the key values was null
* @throws Doctrine_Connection_Exception if there were no key fields
* @throws PDOException if something fails at PDO level
* @return integer number of rows affected
*/
public function replace($table, array $fields, array $keys)
{
//if ( ! $this->supports('replace'))
// throw new Doctrine_Connection_Exception('replace query is not supported');
if (empty($keys)) {
throw new Doctrine_Connection_Exception('Not specified which fields are keys');
}
$condition = $values = array();
foreach ($fields as $name => $value) {
$values[$name] = $value;
if (in_array($name, $keys)) {
if ($value === null)
throw new Doctrine_Connection_Exception('key value '.$name.' may not be null');
$condition[] = $name . ' = ?';
$conditionValues[] = $value;
}
}
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$query = 'DELETE FROM ' . $this->quoteIdentifier($table) . ' WHERE ' . implode(' AND ', $condition);
$affectedRows = $this->exec($query);
$this->insert($table, $values);
$affectedRows++;
return $affectedRows;
}
/**
* Inserts a table row with specified data.
*
* @param string $table The table to insert data into.
* @param array $values An associateve array containing column-value pairs.
* @return boolean
*/
public function insert($table, array $values = array()) {
if (empty($values)) {
return false;
}
// column names are specified as array keys
$cols = array_keys($values);
// build the statement
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$query = 'INSERT INTO ' . $this->quoteIdentifier($table)
. '(' . implode(', ', $cols) . ') '
. 'VALUES (' . substr(str_repeat('?, ', count($values)), 0, -2) . ')';
// prepare and execute the statement
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$this->execute($query, array_values($values));
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return true;
}
/**
* Set the charset on the current connection
*
* @param string charset
*
* @return void
*/
public function setCharset($charset)
{
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}
/**
* Quote a string so it can be safely used as a table or column name
*
* Delimiting style depends on which database driver is being used.
*
* NOTE: just because you CAN use delimited identifiers doesn't mean
* you SHOULD use them. In general, they end up causing way more
* problems than they solve.
*
* Portability is broken by using the following characters inside
* delimited identifiers:
* + backtick (<kbd>`</kbd>) -- due to MySQL
* + double quote (<kbd>"</kbd>) -- due to Oracle
* + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access
*
* Delimited identifiers are known to generally work correctly under
* the following drivers:
* + mssql
* + mysql
* + mysqli
* + oci8
* + pgsql
* + sqlite
*
* InterBase doesn't seem to be able to use delimited identifiers
* via PHP 4. They work fine under PHP 5.
*
* @param string $str identifier name to be quoted
* @param bool $checkOption check the 'quote_identifier' option
*
* @return string quoted identifier string
*/
public function quoteIdentifier($str, $checkOption = true)
{
return $this->formatter->quoteIdentifier($str, $checkOption);
}
/**
* convertBooleans
* some drivers need the boolean values to be converted into integers
* when using DQL API
*
* This method takes care of that conversion
*
* @param array $item
* @return void
*/
public function convertBooleans($item)
{
return $this->formatter->convertBooleans($item);
}
/**
* quote
* quotes given input parameter
*
* @param mixed $input parameter to be quoted
* @param string $type
* @return mixed
*/
public function quote($input, $type = null)
{
return $this->formatter->quote($input, $type);
}
/**
* Set the date/time format for the current connection
*
* @param string time format
*
* @return void
*/
public function setDateFormat($format = null)
{
}
/**
* fetchAll
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
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public function fetchAll($statement, array $params = array())
{
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return $this->execute($statement, $params)->fetchAll(PDO::FETCH_ASSOC);
}
/**
* fetchOne
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @param int $colnum 0-indexed column number to retrieve
* @return mixed
*/
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public function fetchOne($statement, array $params = array(), $colnum = 0)
{
return $this->execute($statement, $params)->fetchColumn($colnum);
}
/**
* fetchRow
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
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public function fetchRow($statement, array $params = array())
{
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return $this->execute($statement, $params)->fetch(PDO::FETCH_ASSOC);
}
/**
* fetchArray
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
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public function fetchArray($statement, array $params = array())
{
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return $this->execute($statement, $params)->fetch(PDO::FETCH_NUM);
}
/**
* fetchColumn
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @param int $colnum 0-indexed column number to retrieve
* @return array
*/
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public function fetchColumn($statement, array $params = array(), $colnum = 0)
{
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return $this->execute($statement, $params)->fetchAll(PDO::FETCH_COLUMN, $colnum);
}
/**
* fetchAssoc
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
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public function fetchAssoc($statement, array $params = array())
{
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return $this->execute($statement, $params)->fetchAll(PDO::FETCH_ASSOC);
}
/**
* fetchBoth
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
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public function fetchBoth($statement, array $params = array())
{
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return $this->execute($statement, $params)->fetchAll(PDO::FETCH_BOTH);
}
/**
* query
* queries the database using Doctrine Query Language
* returns a collection of Doctrine_Record objects
*
* <code>
* $users = $conn->query('SELECT u.* FROM User u');
*
* $users = $conn->query('SELECT u.* FROM User u WHERE u.name LIKE ?', array('someone'));
* </code>
*
* @param string $query DQL query
* @param array $params query parameters
* @see Doctrine_Query
* @return Doctrine_Collection Collection of Doctrine_Record objects
*/
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public function query($query, array $params = array())
{
$parser = new Doctrine_Query($this);
return $parser->query($query, $params);
}
/**
* query
* queries the database using Doctrine Query Language and returns
* the first record found
*
* <code>
* $user = $conn->queryOne('SELECT u.* FROM User u WHERE u.id = ?', array(1));
*
* $user = $conn->queryOne('SELECT u.* FROM User u WHERE u.name LIKE ? AND u.password = ?',
* array('someone', 'password')
* );
* </code>
*
* @param string $query DQL query
* @param array $params query parameters
* @see Doctrine_Query
* @return Doctrine_Record|false Doctrine_Record object on success,
* boolean false on failure
*/
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public function queryOne($query, array $params = array())
{
$parser = new Doctrine_Query($this);
$coll = $parser->query($query, $params);
if ( ! $coll->contains(0)) {
return false;
}
return $coll[0];
}
/**
* queries the database with limit and offset
* added to the query and returns a PDOStatement object
*
* @param string $query
* @param integer $limit
* @param integer $offset
* @return PDOStatement
*/
public function select($query, $limit = 0, $offset = 0)
{
if ($limit > 0 || $offset > 0) {
$query = $this->modifyLimitQuery($query, $limit, $offset);
}
return $this->dbh->query($query);
}
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/**
* standaloneQuery
*
* @param string $query sql query
* @param array $params query parameters
*
* @return PDOStatement|Doctrine_Adapter_Statement
*/
public function standaloneQuery($query, $params = array())
{
return $this->execute($query, $params);
}
/**
* execute
* @param string $query sql query
* @param array $params query parameters
*
* @return PDOStatement|Doctrine_Adapter_Statement
*/
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public function execute($query, array $params = array())
{
$this->connect();
try {
if ( ! empty($params)) {
$stmt = $this->dbh->prepare($query);
$stmt->execute($params);
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return $stmt;
} else {
return $this->dbh->query($query);
}
} catch(Doctrine_Adapter_Exception $e) {
} catch(PDOException $e) { }
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$this->rethrowException($e);
}
/**
* exec
* @param string $query sql query
* @param array $params query parameters
*
* @return PDOStatement|Doctrine_Adapter_Statement
*/
public function exec($query, array $params = array()) {
$this->connect();
try {
if ( ! empty($params)) {
$stmt = $this->dbh->prepare($query);
$stmt->execute($params);
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return $stmt->rowCount();
} else {
return $this->dbh->exec($query);
}
} catch(Doctrine_Adapter_Exception $e) {
} catch(PDOException $e) { }
$this->rethrowException($e);
}
/**
* rethrowException
*
* @throws Doctrine_Connection_Exception
*/
private function rethrowException(Exception $e)
{
$name = 'Doctrine_Connection_' . $this->driverName . '_Exception';
$exc = new $name($e->getMessage(), (int) $e->getCode());
if ( ! is_array($e->errorInfo)) {
$e->errorInfo = array(null, null, null, null);
}
$exc->processErrorInfo($e->errorInfo);
throw $exc;
}
/**
* hasTable
* whether or not this connection has table $name initialized
*
* @param mixed $name
* @return boolean
*/
public function hasTable($name)
{
return isset($this->tables[$name]);
}
/**
* returns a table object for given component name
*
* @param string $name component name
* @return object Doctrine_Table
*/
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public function getTable($name, $allowExport = true)
{
if (isset($this->tables[$name])) {
return $this->tables[$name];
}
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$class = $name . 'Table';
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if (class_exists($class) && in_array('Doctrine_Table', class_parents($class))) {
$table = new $class($name, $this);
} else {
$table = new Doctrine_Table($name, $this);
}
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$this->tables[$name] = $table;
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return $table;
}
/**
* returns an array of all initialized tables
*
* @return array
*/
public function getTables()
{
return $this->tables;
}
/**
* returns an iterator that iterators through all
* initialized table objects
*
* <code>
* foreach ($conn as $index => $table) {
* print $table; // get a string representation of each table object
* }
* </code>
*
* @return ArrayIterator SPL ArrayIterator object
*/
public function getIterator()
{
return new ArrayIterator($this->tables);
}
/**
* returns the count of initialized table objects
*
* @return integer
*/
public function count()
{
return count($this->tables);
}
/**
* addTable
* adds a Doctrine_Table object into connection registry
*
* @param $table a Doctrine_Table object to be added into registry
* @return boolean
*/
public function addTable(Doctrine_Table $table)
{
$name = $table->getComponentName();
if (isset($this->tables[$name])) {
return false;
}
$this->tables[$name] = $table;
return true;
}
/**
* create
* creates a record
*
* create creates a record
* @param string $name component name
* @return Doctrine_Record Doctrine_Record object
*/
public function create($name)
{
return $this->getTable($name)->create();
}
/**
* flush
* saves all the records from all tables
* this operation is isolated using a transaction
*
* @throws PDOException if something went wrong at database level
* @return void
*/
public function flush()
{
$this->beginTransaction();
$this->unitOfWork->saveAll();
$this->commit();
}
/**
* clear
* clears all repositories
*
* @return void
*/
public function clear()
{
foreach ($this->tables as $k => $table) {
$table->getRepository()->evictAll();
$table->clear();
}
}
/**
* evictTables
* evicts all tables
*
* @return void
*/
public function evictTables()
{
$this->tables = array();
$this->exported = array();
}
/**
* close
* closes the connection
*
* @return void
*/
public function close()
{
$this->getAttribute(Doctrine::ATTR_LISTENER)->onPreClose($this);
$this->clear();
$this->getAttribute(Doctrine::ATTR_LISTENER)->onClose($this);
}
/**
* get the current transaction nesting level
*
* @return integer
*/
public function getTransactionLevel()
{
return $this->transaction->getTransactionLevel();
}
/**
* errorCode
* Fetch the SQLSTATE associated with the last operation on the database handle
*
* @return integer
*/
public function errorCode()
{
$this->connect();
return $this->dbh->errorCode();
}
/**
* errorInfo
* Fetch extended error information associated with the last operation on the database handle
*
* @return array
*/
public function errorInfo()
{
$this->connect();
return $this->dbh->errorInfo();
}
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/**
* lastInsertId
*
* Returns the ID of the last inserted row, or the last value from a sequence object,
* depending on the underlying driver.
*
* Note: This method may not return a meaningful or consistent result across different drivers,
* because the underlying database may not even support the notion of auto-increment fields or sequences.
*
* @param string $table name of the table into which a new row was inserted
* @param string $field name of the field into which a new row was inserted
*/
public function lastInsertId($table = null, $field = null)
{
return $this->sequence->lastInsertId($table, $field);
}
/**
* beginTransaction
* Start a transaction or set a savepoint.
*
* if trying to set a savepoint and there is no active transaction
* a new transaction is being started
*
* Listeners: onPreTransactionBegin, onTransactionBegin
*
* @param string $savepoint name of a savepoint to set
* @throws Doctrine_Transaction_Exception if the transaction fails at database level
* @return integer current transaction nesting level
*/
public function beginTransaction($savepoint = null)
{
$this->transaction->beginTransaction($savepoint);
}
/**
* commit
* Commit the database changes done during a transaction that is in
* progress or release a savepoint. This function may only be called when
* auto-committing is disabled, otherwise it will fail.
*
* Listeners: onPreTransactionCommit, onTransactionCommit
*
* @param string $savepoint name of a savepoint to release
* @throws Doctrine_Transaction_Exception if the transaction fails at PDO level
* @throws Doctrine_Validator_Exception if the transaction fails due to record validations
* @return boolean false if commit couldn't be performed, true otherwise
*/
public function commit($savepoint = null)
{
$this->transaction->commit($savepoint);
}
/**
* rollback
* Cancel any database changes done during a transaction or since a specific
* savepoint that is in progress. This function may only be called when
* auto-committing is disabled, otherwise it will fail. Therefore, a new
* transaction is implicitly started after canceling the pending changes.
*
* this method can be listened with onPreTransactionRollback and onTransactionRollback
* eventlistener methods
*
* @param string $savepoint name of a savepoint to rollback to
* @throws Doctrine_Transaction_Exception if the rollback operation fails at database level
* @return boolean false if rollback couldn't be performed, true otherwise
*/
public function rollback($savepoint = null)
{
$this->transaction->rollback($savepoint);
}
/**
* returns a string representation of this object
* @return string
*/
public function __toString()
{
return Doctrine_Lib::getConnectionAsString($this);
}
}