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<?php
/*
* $Id: Connection.php 7490 2010-03-29 19:53:27Z jwage $
*
* 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.doctrine-project.org>.
*/
/**
* Doctrine_Connection
*
* 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
* Doctrine_Connection provides many convenience methods such as fetchAll(), fetchOne() etc.
*
* 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
* @subpackage Connection
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.0
* @version $Revision: 7490 $
* @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, Serializable
{
/**
* @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();
/**
* $_name
*
* Name of the connection
*
* @var string $_name
*/
protected $_name;
/**
* The name of this connection driver.
*
* @var string $driverName
*/
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.)
* import Doctrine_Import driver, handles db schema reading
*
* sequence Doctrine_Sequence driver, handles sequential id generation and retrieval
*
* 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_Driver
* @see Doctrine_Export
* @see Doctrine_Transaction
* @see Doctrine_Sequence
* @see Doctrine_Connection_UnitOfWork
* @see Doctrine_Formatter
*/
private $modules = array('transaction' => false,
'expression' => false,
'dataDict' => false,
'export' => false,
'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),
array('start' => '/*', 'end' => '*/', 'escape' => false)),
'identifier_quoting' => array('start' => '"', 'end' => '"','escape' => '"'),
'string_quoting' => array('start' => "'",
'end' => "'",
'escape' => false,
'escape_pattern' => false),
'wildcards' => array('%', '_'),
'varchar_max_length' => 255,
'sql_file_delimiter' => ";\n",
'max_identifier_length' => 64,
);
/**
* @var array $serverInfo
*/
protected $serverInfo = array();
protected $options = array();
/**
* @var array $supportedDrivers an array containing all supported drivers
*/
private static $supportedDrivers = array(
'Mysql',
'Pgsql',
'Oracle',
'Mssql',
'Sqlite',
);
protected $_count = 0;
/**
* @var array $_userFkNames array of foreign key names that have been used
*/
protected $_usedNames = array(
'foreign_keys' => array(),
'indexes' => array()
);
/**
* 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, $pass = null)
{
if (is_object($adapter)) {
if ( ! ($adapter instanceof PDO) && ! in_array('Doctrine_Adapter_Interface', class_implements($adapter))) {
throw new Doctrine_Connection_Exception('First argument should be an instance of PDO or implement Doctrine_Adapter_Interface');
}
$this->dbh = $adapter;
$this->isConnected = true;
} else if (is_array($adapter)) {
$this->pendingAttributes[Doctrine_Core::ATTR_DRIVER_NAME] = $adapter['scheme'];
$this->options['dsn'] = $adapter['dsn'];
$this->options['username'] = $adapter['user'];
$this->options['password'] = $adapter['pass'];
$this->options['other'] = array();
if (isset($adapter['other'])) {
$this->options['other'] = array(Doctrine_Core::ATTR_PERSISTENT => $adapter['persistent']);
}
}
$this->setParent($manager);
$this->setAttribute(Doctrine_Core::ATTR_CASE, Doctrine_Core::CASE_NATURAL);
$this->setAttribute(Doctrine_Core::ATTR_ERRMODE, Doctrine_Core::ERRMODE_EXCEPTION);
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->onOpen($this);
}
/**
* Check wherther the connection to the database has been made yet
*
* @return boolean
*/
public function isConnected()
{
return $this->isConnected;
}
/**
* getOptions
*
* Get array of all options
*
* @return void
*/
public function getOptions()
{
return $this->options;
}
/**
* getOption
*
* Retrieves option
*
* @param string $option
* @return void
*/
public function getOption($option)
{
if (isset($this->options[$option])) {
return $this->options[$option];
}
}
/**
* setOption
*
* Set option value
*
* @param string $option
* @return void
*/
public function setOption($option, $value)
{
return $this->options[$option] = $value;
}
/**
* getAttribute
* retrieves a database connection attribute
*
* @param integer $attribute
* @return mixed
*/
public function getAttribute($attribute)
{
if ($attribute >= 100 && $attribute < 1000) {
if ( ! isset($this->attributes[$attribute])) {
return parent::getAttribute($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();
}
/**
* Returns an array of supported drivers by Doctrine
*
* @return array $supportedDrivers
*/
public static function getSupportedDrivers()
{
return self::$supportedDrivers;
}
/**
* setAttribute
* sets an attribute
*
* @todo why check for >= 100? has this any special meaning when creating
* attributes?
*
* @param integer $attribute
* @param mixed $value
* @return boolean
*/
public function setAttribute($attribute, $value)
{
if ($attribute >= 100 && $attribute < 1000) {
parent::setAttribute($attribute, $value);
} else {
if ($this->isConnected) {
$this->dbh->setAttribute($attribute, $value);
} else {
$this->pendingAttributes[$attribute] = $value;
}
}
return $this;
}
/**
* getName
* returns the name of this driver
*
* @return string the name of this driver
*/
public function getName()
{
return $this->_name;
}
/**
* setName
*
* Sets the name of the connection
*
* @param string $name
* @return void
*/
public function setName($name)
{
$this->_name = $name;
}
/**
* getDriverName
*
* Gets the name of the instance driver
*
* @return void
*/
public function getDriverName()
{
return $this->driverName;
}
/**
* __get
* lazy loads given module and returns it
*
* @see Doctrine_DataDict
* @see Doctrine_Expression_Driver
* @see Doctrine_Export
* @see Doctrine_Transaction
* @see Doctrine_Connection::$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)
{
if (isset($this->properties[$name])) {
return $this->properties[$name];
}
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;
case 'formatter':
$this->modules[$name] = new Doctrine_Formatter($this);
break;
default:
$class = 'Doctrine_' . ucwords($name) . '_' . $this->getDriverName();
$this->modules[$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()
{
$this->connect();
return $this->dbh;
}
/**
* connect
* connects into database
*
* @return boolean
*/
public function connect()
{
if ($this->isConnected) {
return false;
}
$event = new Doctrine_Event($this, Doctrine_Event::CONN_CONNECT);
$this->getListener()->preConnect($event);
$e = explode(':', $this->options['dsn']);
$found = false;
if (extension_loaded('pdo')) {
if (in_array($e[0], self::getAvailableDrivers())) {
try {
$this->dbh = new PDO($this->options['dsn'], $this->options['username'],
(!$this->options['password'] ? '':$this->options['password']), $this->options['other']);
$this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
throw new Doctrine_Connection_Exception('PDO Connection Error: ' . $e->getMessage());
}
$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'], $this->options);
} 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_Core::ATTR_DRIVER_NAME) {
continue;
}
$this->dbh->setAttribute($attr, $value);
}
$this->isConnected = true;
$this->getListener()->postConnect($event);
return true;
}
public function incrementQueryCount()
{
$this->_count++;
}
/**
* converts given driver name
*
* @param
*/
public function driverName($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])
&& ($this->supported[$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(Doctrine_Table $table, array $fields, array $keys)
{
if (empty($keys)) {
throw new Doctrine_Connection_Exception('Not specified which fields are keys');
}
$identifier = (array) $table->getIdentifier();
$condition = array();
foreach ($fields as $fieldName => $value) {
if (in_array($fieldName, $keys)) {
if ($value !== null) {
$condition[] = $table->getColumnName($fieldName) . ' = ?';
$conditionValues[] = $value;
}
}
}
$affectedRows = 0;
if ( ! empty($condition) && ! empty($conditionValues)) {
$query = 'DELETE FROM ' . $this->quoteIdentifier($table->getTableName())
. ' WHERE ' . implode(' AND ', $condition);
$affectedRows = $this->exec($query, $conditionValues);
}
$this->insert($table, $fields);
$affectedRows++;
return $affectedRows;
}
/**
* deletes table row(s) matching the specified identifier
*
* @throws Doctrine_Connection_Exception if something went wrong at the database level
* @param string $table The table to delete data from
* @param array $identifier An associateve array containing identifier column-value pairs.
* @return integer The number of affected rows
*/
public function delete(Doctrine_Table $table, array $identifier)
{
$tmp = array();
foreach (array_keys($identifier) as $id) {
$tmp[] = $this->quoteIdentifier($table->getColumnName($id)) . ' = ?';
}
$query = 'DELETE FROM '
. $this->quoteIdentifier($table->getTableName())
. ' WHERE ' . implode(' AND ', $tmp);
return $this->exec($query, array_values($identifier));
}
/**
* Updates table row(s) with specified data.
*
* @throws Doctrine_Connection_Exception if something went wrong at the database level
* @param Doctrine_Table $table The table to insert data into
* @param array $values An associative array containing column-value pairs.
* Values can be strings or Doctrine_Expression instances.
* @return integer the number of affected rows. Boolean false if empty value array was given,
*/
public function update(Doctrine_Table $table, array $fields, array $identifier)
{
if (empty($fields)) {
return false;
}
$set = array();
foreach ($fields as $fieldName => $value) {
if ($value instanceof Doctrine_Expression) {
$set[] = $this->quoteIdentifier($table->getColumnName($fieldName)) . ' = ' . $value->getSql();
unset($fields[$fieldName]);
} else {
$set[] = $this->quoteIdentifier($table->getColumnName($fieldName)) . ' = ?';
}
}
$params = array_merge(array_values($fields), array_values($identifier));
$sql = 'UPDATE ' . $this->quoteIdentifier($table->getTableName())
. ' SET ' . implode(', ', $set)
. ' WHERE ' . implode(' = ? AND ', $this->quoteMultipleIdentifier($table->getIdentifierColumnNames()))
. ' = ?';
return $this->exec($sql, $params);
}
/**
* Inserts a table row with specified data.
*
* @param Doctrine_Table $table The table to insert data into.
* @param array $values An associative array containing column-value pairs.
* Values can be strings or Doctrine_Expression instances.
* @return integer the number of affected rows. Boolean false if empty value array was given,
*/
public function insert(Doctrine_Table $table, array $fields)
{
$tableName = $table->getTableName();
// column names are specified as array keys
$cols = array();
// the query VALUES will contain either expresions (eg 'NOW()') or ?
$a = array();
foreach ($fields as $fieldName => $value) {
$cols[] = $this->quoteIdentifier($table->getColumnName($fieldName));
if ($value instanceof Doctrine_Expression) {
$a[] = $value->getSql();
unset($fields[$fieldName]);
} else {
$a[] = '?';
}
}
// build the statement
$query = 'INSERT INTO ' . $this->quoteIdentifier($tableName)
. ' (' . implode(', ', $cols) . ')'
. ' VALUES (' . implode(', ', $a) . ')';
return $this->exec($query, array_values($fields));
}
/**
* 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, $checkOption = true)
{
// quick fix for the identifiers that contain a dot
if (strpos($str, '.')) {
$e = explode('.', $str);
return $this->formatter->quoteIdentifier($e[0], $checkOption) . '.'
. $this->formatter->quoteIdentifier($e[1], $checkOption);
}
return $this->formatter->quoteIdentifier($str, $checkOption);
}
/**
* quoteMultipleIdentifier
* Quotes multiple identifier strings
*
* @param array $arr identifiers array to be quoted
* @param bool $checkOption check the 'quote_identifier' option
*
* @return string quoted identifier string
*/
public function quoteMultipleIdentifier($arr, $checkOption = true)
{
foreach ($arr as $k => $v) {
$arr[$k] = $this->quoteIdentifier($v, $checkOption);
}
return $arr;
}
/**
* 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 $type
* @return string
*/
public function quote($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 $params prepared statement params
* @return array
*/
public function fetchAll($statement, array $params = array())
{
return $this->execute($statement, $params)->fetchAll(Doctrine_Core::FETCH_ASSOC);
}
/**
* fetchOne
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @param int $colnum 0-indexed column number to retrieve
* @return mixed
*/
public function fetchOne($statement, array $params = array(), $colnum = 0)
{
return $this->execute($statement, $params)->fetchColumn($colnum);
}
/**
* fetchRow
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
public function fetchRow($statement, array $params = array())
{
return $this->execute($statement, $params)->fetch(Doctrine_Core::FETCH_ASSOC);
}
/**
* fetchArray
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
public function fetchArray($statement, array $params = array())
{
return $this->execute($statement, $params)->fetch(Doctrine_Core::FETCH_NUM);
}
/**
* fetchColumn
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @param int $colnum 0-indexed column number to retrieve
* @return array
*/
public function fetchColumn($statement, array $params = array(), $colnum = 0)
{
return $this->execute($statement, $params)->fetchAll(Doctrine_Core::FETCH_COLUMN, $colnum);
}
/**
* fetchAssoc
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
public function fetchAssoc($statement, array $params = array())
{
return $this->execute($statement, $params)->fetchAll(Doctrine_Core::FETCH_ASSOC);
}
/**
* fetchBoth
*
* @param string $statement sql query to be executed
* @param array $params prepared statement params
* @return array
*/
public function fetchBoth($statement, array $params = array())
{
return $this->execute($statement, $params)->fetchAll(Doctrine_Core::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
* @param int $hydrationMode Doctrine_Core::HYDRATE_ARRAY or Doctrine_Core::HYDRATE_RECORD
* @see Doctrine_Query
* @return Doctrine_Collection Collection of Doctrine_Record objects
*/
public function query($query, array $params = array(), $hydrationMode = null)
{
$parser = Doctrine_Query::create($this);
$res = $parser->query($query, $params, $hydrationMode);
$parser->free();
return $res;
}
/**
* prepare
*
* @param string $statement
*/
public function prepare($statement)
{
$this->connect();
try {
$event = new Doctrine_Event($this, Doctrine_Event::CONN_PREPARE, $statement);
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->prePrepare($event);
$stmt = false;
if ( ! $event->skipOperation) {
$stmt = $this->dbh->prepare($statement);
}
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->postPrepare($event);
return new Doctrine_Connection_Statement($this, $stmt);
} catch(Doctrine_Adapter_Exception $e) {
} catch(PDOException $e) { }
$this->rethrowException($e, $this, $statement);
}
/**
* 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 $params query parameters
* @see Doctrine_Query
* @return Doctrine_Record|false Doctrine_Record object on success,
* boolean false on failure
*/
public function queryOne($query, array $params = array())
{
$parser = Doctrine_Query::create();
$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 Doctrine_Connection_Statement object
*
* @param string $query
* @param integer $limit
* @param integer $offset
* @return Doctrine_Connection_Statement
*/
public function select($query, $limit = 0, $offset = 0)
{
if ($limit > 0 || $offset > 0) {
$query = $this->modifyLimitQuery($query, $limit, $offset);
}
return $this->execute($query);
}
/**
* 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 $params query parameters
*
* @return PDOStatement|Doctrine_Adapter_Statement
*/
public function execute($query, array $params = array())
{
$this->connect();
try {
if ( ! empty($params)) {
$stmt = $this->prepare($query);
$stmt->execute($params);
return $stmt;
} else {
$event = new Doctrine_Event($this, Doctrine_Event::CONN_QUERY, $query, $params);
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->preQuery($event);
if ( ! $event->skipOperation) {
$stmt = $this->dbh->query($query);
$this->_count++;
}
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->postQuery($event);
return $stmt;
}
} catch (Doctrine_Adapter_Exception $e) {
} catch (PDOException $e) { }
$this->rethrowException($e, $this, $query);
}
/**
* exec
* @param string $query sql query
* @param array $params query parameters
*
* @return integer
*/
public function exec($query, array $params = array())
{
$this->connect();
try {
if ( ! empty($params)) {
$stmt = $this->prepare($query);
$stmt->execute($params);
return $stmt->rowCount();
} else {
$event = new Doctrine_Event($this, Doctrine_Event::CONN_EXEC, $query, $params);
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->preExec($event);
if ( ! $event->skipOperation) {
$count = $this->dbh->exec($query);
$this->_count++;
}
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->postExec($event);
return $count;
}
} catch (Doctrine_Adapter_Exception $e) {
} catch (PDOException $e) { }
$this->rethrowException($e, $this, $query);
}
/**
* rethrowException
*
* @throws Doctrine_Connection_Exception
*/
public function rethrowException(Exception $e, $invoker, $query = null)
{
$event = new Doctrine_Event($this, Doctrine_Event::CONN_ERROR);
$this->getListener()->preError($event);
$name = 'Doctrine_Connection_' . $this->driverName . '_Exception';
$message = $e->getMessage();
if ($query) {
$message .= sprintf('. Failing Query: "%s"', $query);
}
$exc = new $name($message, (int) $e->getCode());
if ( ! isset($e->errorInfo) || ! is_array($e->errorInfo)) {
$e->errorInfo = array(null, null, null, null);
}
$exc->processErrorInfo($e->errorInfo);
if ($this->getAttribute(Doctrine_Core::ATTR_THROW_EXCEPTIONS)) {
throw $exc;
}
$this->getListener()->postError($event);
}
/**
* 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 $name component name
* @return Doctrine_Table
*/
public function getTable($name)
{
if (isset($this->tables[$name])) {
return $this->tables[$name];
}
$class = sprintf($this->getAttribute(Doctrine_Core::ATTR_TABLE_CLASS_FORMAT), $name);
if (class_exists($class, $this->getAttribute(Doctrine_Core::ATTR_AUTOLOAD_TABLE_CLASSES)) &&
in_array('Doctrine_Table', class_parents($class))) {
$table = new $class($name, $this, true);
} else {
$tableClass = $this->getAttribute(Doctrine_Core::ATTR_TABLE_CLASS);
$table = new $tableClass($name, $this, true);
}
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 $this->_count;
}
/**
* 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();
}
/**
* Creates a new Doctrine_Query object that operates on this connection.
*
* @return Doctrine_Query
*/
public function createQuery()
{
return Doctrine_Query::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()
{
try {
$this->beginInternalTransaction();
$this->unitOfWork->saveAll();
$this->commit();
} catch (Exception $e) {
$this->rollback();
throw $e;
}
}
/**
* clear
* clears all repositories
*
* @return void
*/
public function clear()
{
foreach ($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()
{
$event = new Doctrine_Event($this, Doctrine_Event::CONN_CLOSE);
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->preClose($event);
$this->clear();
unset($this->dbh);
$this->isConnected = false;
$this->getAttribute(Doctrine_Core::ATTR_LISTENER)->postClose($event);
}
/**
* 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();
}
/**
* getResultCacheDriver
*
* @return Doctrine_Cache_Interface
*/
public function getResultCacheDriver()
{
if ( ! $this->getAttribute(Doctrine_Core::ATTR_RESULT_CACHE)) {
throw new Doctrine_Exception('Result Cache driver not initialized.');
}
return $this->getAttribute(Doctrine_Core::ATTR_RESULT_CACHE);
}
/**
* getQueryCacheDriver
*
* @return Doctrine_Cache_Interface
*/
public function getQueryCacheDriver()
{
if ( ! $this->getAttribute(Doctrine_Core::ATTR_QUERY_CACHE)) {
throw new Doctrine_Exception('Query Cache driver not initialized.');
}
return $this->getAttribute(Doctrine_Core::ATTR_QUERY_CACHE);
}
/**
* 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)
{
return $this->transaction->beginTransaction($savepoint);
}
public function beginInternalTransaction($savepoint = null)
{
return $this->transaction->beginInternalTransaction($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)
{
return $this->transaction->commit($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)
{
return $this->transaction->rollback($savepoint);
}
/**
* createDatabase
*
* Issue create database command for this instance of Doctrine_Connection
*
* @return string Doctrine_Exception catched in case of failure
*/
public function createDatabase()
{
if ( ! $dsn = $this->getOption('dsn')) {
throw new Doctrine_Connection_Exception('You must create your Doctrine_Connection by using a valid Doctrine style dsn in order to use the create/drop database functionality');
}
// Parse pdo dsn so we are aware of the connection information parts
$info = $this->getManager()->parsePdoDsn($dsn);
// Get the temporary connection to issue the create database command
$tmpConnection = $this->getTmpConnection($info);
// Catch any exceptions and delay the throwing of it so we can close
// the tmp connection
try {
$tmpConnection->export->createDatabase($info['dbname']);
} catch (Exception $e) {}
// Close the temporary connection used to issue the drop database command
$this->getManager()->closeConnection($tmpConnection);
if (isset($e)) {
throw $e;
}
}
/**
* dropDatabase
*
* Issue drop database command for this instance of Doctrine_Connection
*
* @return string success string. Doctrine_Exception if operation failed
*/
public function dropDatabase()
{
if ( ! $dsn = $this->getOption('dsn')) {
throw new Doctrine_Connection_Exception('You must create your Doctrine_Connection by using a valid Doctrine style dsn in order to use the create/drop database functionality');
}
// Parse pdo dsn so we are aware of the connection information parts
$info = $this->getManager()->parsePdoDsn($dsn);
// Get the temporary connection to issue the drop database command
$tmpConnection = $this->getTmpConnection($info);
// Catch any exceptions and delay the throwing of it so we can close
// the tmp connection
try {
$tmpConnection->export->dropDatabase($info['dbname']);
} catch (Exception $e) {}
// Close the temporary connection used to issue the drop database command
$this->getManager()->closeConnection($tmpConnection);
if (isset($e)) {
throw $e;
}
}
/**
* getTmpConnection
*
* Create a temporary connection to the database with the user credentials.
* This is so the user can make a connection to a db server. Some dbms allow
* connections with no database, but some do not. In that case we have a table
* which is always guaranteed to exist. Mysql: 'mysql', PostgreSQL: 'postgres', etc.
* This value is set in the Doctrine_Export_{DRIVER} classes if required
*
* @param string $info
* @return void
*/
public function getTmpConnection($info)
{
$pdoDsn = $info['scheme'] . ':';
if ($info['unix_socket']) {
$pdoDsn .= 'unix_socket=' . $info['unix_socket'] . ';';
}
$pdoDsn .= 'host=' . $info['host'];
if ($info['port']) {
$pdoDsn .= ';port=' . $info['port'];
}
if (isset($this->export->tmpConnectionDatabase) && $this->export->tmpConnectionDatabase) {
$pdoDsn .= ';dbname=' . $this->export->tmpConnectionDatabase;
}
$username = $this->getOption('username');
$password = $this->getOption('password');
$conn = $this->getManager()->openConnection(array($pdoDsn, $username, $password), 'doctrine_tmp_connection', false);
$conn->setOption('username', $username);
$conn->setOption('password', $password);
return $conn;
}
/**
* modifyLimitQuery
*
* Some dbms require specific functionality for this. Check the other connection adapters for examples
*
* @return string
*/
public function modifyLimitQuery($query, $limit = false, $offset = false, $isManip = false)
{
return $query;
}
/**
* Creates dbms specific LIMIT/OFFSET SQL for the subqueries that are used in the
* context of the limit-subquery algorithm.
*
* @return string
*/
public function modifyLimitSubquery(Doctrine_Table $rootTable, $query, $limit = false,
$offset = false, $isManip = false)
{
return $this->modifyLimitQuery($query, $limit, $offset, $isManip);
}
/**
* returns a string representation of this object
* @return string
*/
public function __toString()
{
return Doctrine_Lib::getConnectionAsString($this);
}
/**
* Serialize. Remove database connection(pdo) since it cannot be serialized
*
* @return string $serialized
*/
public function serialize()
{
$vars = get_object_vars($this);
$vars['dbh'] = null;
$vars['isConnected'] = false;
return serialize($vars);
}
/**
* Unserialize. Recreate connection from serialized content
*
* @param string $serialized
* @return void
*/
public function unserialize($serialized)
{
$array = unserialize($serialized);
foreach ($array as $name => $values) {
$this->$name = $values;
}
}
/**
* Get/generate a unique foreign key name for a relationship
*
* @param Doctrine_Relation $relation Relation object to generate the foreign key name for
* @return string $fkName
*/
public function generateUniqueRelationForeignKeyName(Doctrine_Relation $relation)
{
$parts = array(
$relation['localTable']->getTableName(),
$relation->getLocalColumnName(),
$relation['table']->getTableName(),
$relation->getForeignColumnName(),
);
$key = implode('_', array_merge($parts, array($relation['onDelete']), array($relation['onUpdate'])));
$format = $this->getAttribute(Doctrine_Core::ATTR_FKNAME_FORMAT);
return $this->_generateUniqueName('foreign_keys', $parts, $key, $format, $this->getAttribute(Doctrine_Core::ATTR_MAX_IDENTIFIER_LENGTH));
}
/**
* Get/generate unique index name for a table name and set of fields
*
* @param string $tableName The name of the table the index exists
* @param string $fields The fields that makes up the index
* @return string $indexName The name of the generated index
*/
public function generateUniqueIndexName($tableName, $fields)
{
$fields = (array) $fields;
$parts = array($tableName);
$parts = array_merge($parts, $fields);
$key = implode('_', $parts);
$format = $this->getAttribute(Doctrine_Core::ATTR_IDXNAME_FORMAT);
return $this->_generateUniqueName('indexes', $parts, $key, $format, $this->getAttribute(Doctrine_Core::ATTR_MAX_IDENTIFIER_LENGTH));
}
protected function _generateUniqueName($type, $parts, $key, $format = '%s', $maxLength = null)
{
if (isset($this->_usedNames[$type][$key])) {
return $this->_usedNames[$type][$key];
}
if ($maxLength === null) {
$maxLength = $this->properties['max_identifier_length'];
}
$generated = implode('_', $parts);
// If the final length is greater than 64 we need to create an abbreviated fk name
if (strlen(sprintf($format, $generated)) > $maxLength) {
$generated = '';
foreach ($parts as $part) {
$generated .= $part[0];
}
$name = $generated;
} else {
$name = $generated;
}
while (in_array($name, $this->_usedNames[$type])) {
$e = explode('_', $name);
$end = end($e);
if (is_numeric($end)) {
unset($e[count($e) - 1]);
$fkName = implode('_', $e);
$name = $fkName . '_' . ++$end;
} else {
$name .= '_1';
}
}
$this->_usedNames[$type][$key] = $name;
return $name;
}
}
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