Error202
/
yii2-swiftmailer
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

w

tags/2.0.0-beta
Qiang Xue 14 years ago
parent
eaf60e14f5
commit
22de0d31c1
1 changed files with 232 additions and 435 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 667
      framework/db/dao/Connection.php

667
framework/db/dao/Connection.php
Unescape View File

@ -11,74 +11,72 @@
namespace yii\db\dao; namespace yii\db\dao;
/** /**
* Connection represents a connection to a database. * Connection represents a connection to a database via [PDO](http://www.php.net/manual/en/ref.pdo.php).
* *
* Connection works together with {@link CDbCommand}, {@link CDbDataReader} * Connection works together with [[Command]], [[DataReader]] and [[Transaction]]
* and {@link CDbTransaction} to provide data access to various DBMS * to provide data access to various DBMS in a common set of APIs. They are a thin wrapper
* in a common set of APIs. They are a thin wrapper of the {@link http://www.php.net/manual/en/ref.pdo.php PDO} * of the [[PDO PHP extension]](http://www.php.net/manual/en/ref.pdo.php).
* PHP extension.
* *
* To establish a connection, set {@link setActive active} to true after * To establish a DB connection, set [[dsn]], [[username]] and [[password]], and then
* specifying {@link connectionString}, {@link username} and {@link password}. * call [[open]] or set [[active]] to be true.
* *
* The following example shows how to create a Connection instance and establish * The following example shows how to create a Connection instance and establish
* the actual connection: * the DB connection:
* <pre>
* $connection=new Connection($dsn,$username,$password);
* $connection->active=true;
* </pre>
* *
* After the DB connection is established, one can execute an SQL statement like the following: * ~~~
* <pre> * $connection = \yii\db\dao\Connection::create($dsn, $username, $password);
* $command=$connection->createCommand($sqlStatement); * $connection->open(); // same as: $connection->active = true;
* ~~~
*
* After the DB connection is established, one can execute a SQL statement like the following:
*
* ~~~
* $command = $connection->createCommand('SELECT * FROM tbl_post');
* $command->execute(); // a non-query SQL statement execution * $command->execute(); // a non-query SQL statement execution
* // or execute an SQL query and fetch the result set * // or execute an SQL query and return the results as an array
* $reader=$command->query(); * $rows = $command->queryAll();
* ~~~
*
* One can also do prepared SQL execution and bind parameters to the prepared SQL:
* *
* // each $row is an array representing a row of data * ~~~
* foreach($reader as $row) ... * $command = $connection->createCommand('SELECT * FROM tbl_post WHERE id=:id');
* </pre> * $command->bindValue(':id', $_GET['id']);
* $post = $command->query();
* ~~~
* *
* One can do prepared SQL execution and bind parameters to the prepared SQL: * DB transaction may also be used for DBMS that supports it. For example,
* <pre>
* $command=$connection->createCommand($sqlStatement);
* $command->bindParam($name1,$value1);
* $command->bindParam($name2,$value2);
* $command->execute();
* </pre>
* *
* To use transaction, do like the following: * ~~~
* <pre> * $transaction = $connection->beginTransaction();
* $transaction=$connection->beginTransaction(); * try {
* try * $connection->createCommand($sql1)->execute();
* { * $connection->createCommand($sql2)->execute();
* $connection->createCommand($sql1)->execute(); * // ... executing other SQL statements ...
* $connection->createCommand($sql2)->execute(); * $transaction->commit();
* //.... other SQL executions
* $transaction->commit();
* } * }
* catch(Exception $e) * catch(Exception $e) {
* {
* $transaction->rollBack(); * $transaction->rollBack();
* } * }
* </pre> * ~~~
* *
* Connection also provides a set of methods to support setting and querying * Since Connection extends from [[\yii\base\ApplicationComponent]], it can
* of certain DBMS attributes, such as {@link getNullConversion nullConversion}.
*
* Since Connection implements the interface IApplicationComponent, it can
* be used as an application component and be configured in application configuration, * be used as an application component and be configured in application configuration,
* like the following, * like the following,
* <pre> *
* ~~~
* array( * array(
* 'components'=>array( * 'components' => array(
* 'db'=>array( * 'db' => array(
* 'class'=>'Connection', * 'class' => '\yii\db\dao\Connection',
* 'connectionString'=>'sqlite:path/to/dbfile', * 'dsn' => 'mysql:host=127.0.0.1;dbname=demo',
* 'username' => 'root',
* 'password' => '',
* 'charset' => 'utf8',
* ), * ),
* ), * ),
* ) * )
* </pre> * ~~~
* *
* @author Qiang Xue <qiang.xue@gmail.com> * @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0 * @since 2.0
@ -86,8 +84,9 @@ namespace yii\db\dao;
class Connection extends \yii\base\ApplicationComponent class Connection extends \yii\base\ApplicationComponent
{ {
/** /**
* @var string The Data Source Name, or DSN, contains the information required to connect to the database. * @var string the Data Source Name, or DSN, contains the information required to connect to the database.
* @see http://www.php.net/manual/en/function.PDO-construct.php * Please refer to the [PHP manual](http://www.php.net/manual/en/function.PDO-construct.php) on
* the format of the DSN string.
* *
* Note that if your database is using GBK or BIG5 charset, we highly recommend you * Note that if your database is using GBK or BIG5 charset, we highly recommend you
* to upgrade to PHP 5.3.6+ and specify charset via DSN like the following to prevent * to upgrade to PHP 5.3.6+ and specify charset via DSN like the following to prevent
@ -103,12 +102,30 @@ class Connection extends \yii\base\ApplicationComponent
*/ */
public $password = ''; public $password = '';
/** /**
* @var array PDO attributes (name=>value) that should be set when calling [[open]]
* to establish a DB connection. Please refer to the
* [PHP manual](http://www.php.net/manual/en/function.PDO-setAttribute.php) for
* details about available attributes.
*/
public $attributes;
/**
* @var \PDO the PHP PDO instance associated with this DB connection.
* This property is mainly managed by [[open]] and [[close]] methods.
* When a DB connection is active, this property will represent a PDO instance;
* otherwise, it will be null.
*/
public $pdo;
/**
* @var integer number of seconds that table metadata can remain valid in cache. * @var integer number of seconds that table metadata can remain valid in cache.
* Use 0 or negative value to indicate not caching schema. * Defaults to -1, meaning schema caching is disabled.
* If greater than 0 and the primary cache is enabled, the table metadata will be cached. * Use 0 to indicate that the cached data will never expire.
*
* Note that in order to enable schema caching, a valid cache component as specified
* by [[schemaCacheID]] must be enabled.
* @see schemaCachingExclude * @see schemaCachingExclude
* @see schemaCacheID
*/ */
public $schemaCachingDuration = 0; public $schemaCachingDuration = -1;
/** /**
* @var array list of tables whose metadata should NOT be cached. Defaults to empty array. * @var array list of tables whose metadata should NOT be cached. Defaults to empty array.
* @see schemaCachingDuration * @see schemaCachingDuration
@ -116,55 +133,47 @@ class Connection extends \yii\base\ApplicationComponent
public $schemaCachingExclude = array(); public $schemaCachingExclude = array();
/** /**
* @var string the ID of the cache application component that is used to cache the table metadata. * @var string the ID of the cache application component that is used to cache the table metadata.
* Defaults to 'cache' which refers to the primary cache application component. * Defaults to 'cache'.
* Set this property to false if you want to disable caching table metadata. * @see schemaCachingDuration
* @since 1.0.10
*/ */
public $schemaCacheID = 'cache'; public $schemaCacheID = 'cache';
/** /**
* @var integer number of seconds that query results can remain valid in cache. * @var integer number of seconds that query results can remain valid in cache.
* Use 0 or negative value to indicate not caching query results (the default behavior). * Defaults to -1, meaning query caching is disabled.
* Use 0 to indicate that the cached data will never expire.
* *
* In order to enable query caching, this property must be a positive * Note that in order to enable query caching, a valid cache component as specified
* integer and {@link queryCacheID} must point to a valid cache component ID. * by [[queryCacheID]] must be enabled.
* *
* The method {@link cache()} is provided as a convenient way of setting this property * The method [[cache()]] is provided as a convenient way of setting this property
* and {@link queryCachingDependency} on the fly. * and [[queryCachingDependency]] on the fly.
* *
* @see cache * @see cache
* @see queryCachingDependency * @see queryCachingDependency
* @see queryCacheID * @see queryCacheID
* @since 1.1.7
*/ */
public $queryCachingDuration = 0; public $queryCachingDuration = -1;
/** /**
* @var CCacheDependency the dependency that will be used when saving query results into cache. * @var CCacheDependency the dependency that will be used when saving query results into cache.
* Defaults to null, meaning no dependency.
* @see queryCachingDuration * @see queryCachingDuration
* @since 1.1.7
*/ */
public $queryCachingDependency; public $queryCachingDependency;
/** /**
* @var integer the number of SQL statements that need to be cached next. * @var integer the number of SQL statements that need to be cached when they are executed next.
* If this is 0, then even if query caching is enabled, no query will be cached. * Defaults to 0, meaning the query result of the next SQL statement will NOT be cached.
* Note that each time after executing a SQL statement (whether executed on DB server or fetched from * Note that each time after executing a SQL statement (whether executed on DB server or fetched from
* query cache), this property will be reduced by 1 until 0. * query cache), this property will be reduced by 1 until 0.
* @since 1.1.7 * @see queryCachingDuration
*/ */
public $queryCachingCount = 0; public $queryCachingCount = 0;
/** /**
* @var string the ID of the cache application component that is used for query caching. * @var string the ID of the cache application component that is used for query caching.
* Defaults to 'cache' which refers to the primary cache application component. * Defaults to 'cache'.
* Set this property to false if you want to disable query caching. * @see queryCachingDuration
* @since 1.1.7
*/ */
public $queryCacheID = 'cache'; public $queryCacheID = 'cache';
/** /**
* @var boolean whether the database connection should be automatically established
* the component is being initialized. Defaults to true. Note, this property is only
* effective when the Connection object is used as an application component.
*/
public $autoConnect = true;
/**
* @var string the charset used for database connection. The property is only used * @var string the charset used for database connection. The property is only used
* for MySQL and PostgreSQL databases. Defaults to null, meaning using default charset * for MySQL and PostgreSQL databases. Defaults to null, meaning using default charset
* as specified by the database. * as specified by the database.
@ -188,77 +197,69 @@ class Connection extends \yii\base\ApplicationComponent
* so that parameter values bound to SQL statements are logged for debugging purpose. * so that parameter values bound to SQL statements are logged for debugging purpose.
* You should be aware that logging parameter values could be expensive and have significant * You should be aware that logging parameter values could be expensive and have significant
* impact on the performance of your application. * impact on the performance of your application.
* @since 1.0.5
*/ */
public $enableParamLogging = false; public $enableParamLogging = false;
/** /**
* @var boolean whether to enable profiling the SQL statements being executed. * @var boolean whether to enable profiling for the SQL statements being executed.
* Defaults to false. This should be mainly enabled and used during development * Defaults to false. This should be mainly enabled and used during development
* to find out the bottleneck of SQL executions. * to find out the bottleneck of SQL executions.
* @since 1.0.6 * @see getStats
*/ */
public $enableProfiling = false; public $enableProfiling = false;
/** /**
* @var string the default prefix for table names. Defaults to null, meaning no table prefix. * @var string the default prefix for table names. Defaults to null, meaning no table prefix.
* By setting this property, any token like '{{tableName}}' in {@link CDbCommand::text} will * By setting this property, any token like '{{tableName}}' in [[Command::text]] will
* be replaced by 'prefixTableName', where 'prefix' refers to this property value. * be replaced with 'prefixTableName', where 'prefix' refers to this property value.
* @since 1.1.0 * For example, '{{post}}' becomes 'tbl_post', if 'tbl_' is set as the table prefix.
*/ */
public $tablePrefix; public $tablePrefix;
/** /**
* @var array list of SQL statements that should be executed right after the DB connection is established. * @var array list of SQL statements that should be executed right after the DB connection is established.
* @since 1.1.1
*/ */
public $initSQLs; public $initSQLs;
/** /**
* @var array mapping between PDO driver and schema class name. * @var array mapping between PDO drivers and schema classes.
* A schema class can be specified using path alias. * The keys of the array are PDO driver names while the values the corresponding
* @since 1.1.6 * schema class name or configuration. Please refer to [[\Yii::createComponent]] for
*/ * details on how to specify a configuration.
public $driverMap = array( *
'pgsql' => 'CPgsqlSchema', // PostgreSQL * This property is mainly used by [[getSchema]] when fetching the database schema information.
'mysqli' => 'CMysqlSchema', // MySQL */
'mysql' => 'CMysqlSchema', // MySQL public $schemaMap = array(
'sqlite' => 'CSqliteSchema', // sqlite 3 'pgsql' => '\yii\db\dao\pgsql\Schema', // PostgreSQL
'sqlite2' => 'CSqliteSchema', // sqlite 2 'mysqli' => '\yii\db\dao\mysql\Schema', // MySQL
'mssql' => 'CMssqlSchema', // Mssql driver on windows hosts 'mysql' => '\yii\db\dao\mysql\Schema', // MySQL
'dblib' => 'CMssqlSchema', // dblib drivers on linux (and maybe others os) hosts 'sqlite' => '\yii\db\dao\sqlite\Schema', // sqlite 3
'sqlsrv' => 'CMssqlSchema', // Mssql 'sqlite2' => '\yii\db\dao\\sqlite\Schema', // sqlite 2
'oci' => 'COciSchema', // Oracle driver 'mssql' => '\yii\db\dao\mssql\Schema', // Mssql driver on windows hosts
'dblib' => '\yii\db\dao\mssql\Schema', // dblib drivers on linux (and maybe others os) hosts
'sqlsrv' => '\yii\db\dao\mssql\Schema', // Mssql
'oci' => '\yii\db\dao\oci\Schema', // Oracle driver
); );
/**
* @var string Custom PDO wrapper class.
* @since 1.1.8
*/
public $pdoClass = 'PDO';
private $_attributes = array();
private $_active = false;
private $_pdo;
private $_transaction; private $_transaction;
private $_schema; private $_schema;
/** /**
* Constructor. * Constructor.
* Note, the DB connection is not established when this connection * Note, the DB connection is not established when this connection
* instance is created. Set {@link setActive active} property to true * instance is created. You may set [[active]] to be true or call [[open]]
* to establish the connection. * to establish the connection.
* @param string $dsn The Data Source Name, or DSN, contains the information required to connect to the database. * @param string $dsn the Data Source Name, or DSN, contains the information
* @param string $username The user name for the DSN string. * required to connect to the database.
* @param string $password The password for the DSN string. * @param string $username the user name for the DSN string.
* @param string $password the password for the DSN string.
* @see http://www.php.net/manual/en/function.PDO-construct.php * @see http://www.php.net/manual/en/function.PDO-construct.php
*/ */
public function __construct($dsn = '', $username = '', $password = '') public function __construct($dsn = '', $username = '', $password = '')
{ {
$this->connectionString = $dsn; $this->dsn = $dsn;
$this->username = $username; $this->username = $username;
$this->password = $password; $this->password = $password;
} }
/** /**
* Close the connection when serializing. * Closes the connection when this component is being serialized.
* @return array * @return array
*/ */
public function __sleep() public function __sleep()
@ -278,61 +279,38 @@ class Connection extends \yii\base\ApplicationComponent
} }
/** /**
* Initializes the component. * Returns a value indicating whether the DB connection is established.
* This method is required by {@link IApplicationComponent} and is invoked by application
* when the Connection is used as an application component.
* If you override this method, make sure to call the parent implementation
* so that the component can be marked as initialized.
*/
public function init()
{
parent::init();
if ($this->autoConnect)
$this->setActive(true);
}
/**
* Returns whether the DB connection is established.
* @return boolean whether the DB connection is established * @return boolean whether the DB connection is established
*/ */
public function getActive() public function getActive()
{ {
return $this->_active; return $this->pdo !== null;
} }
/** /**
* Open or close the DB connection. * Opens or closes the DB connection.
* @param boolean $value whether to open or close DB connection * @param boolean $value whether to open or close the DB connection
* @throws CException if connection fails * @throws Exception if there is any error when establishing the connection
*/ */
public function setActive($value) public function setActive($value)
{ {
if ($value != $this->_active) $value ? $this->open() : $this->close();
{
if ($value)
$this->open();
else
$this->close();
}
} }
/** /**
* Sets the parameters about query caching. * Sets the parameters about query caching.
* This method can be used to enable or disable query caching. * This method is provided as a shortcut to setting three properties that are related
* By setting the $duration parameter to be 0, the query caching will be disabled. * with query caching: [[queryCachingDuration]], [[queryCachingDependency]] and
* Otherwise, query results of the new SQL statements executed next will be saved in cache * [[queryCachingCount]].
* and remain valid for the specified duration.
* If the same query is executed again, the result may be fetched from cache directly
* without actually executing the SQL statement.
* @param integer $duration the number of seconds that query results may remain valid in cache. * @param integer $duration the number of seconds that query results may remain valid in cache.
* If this is 0, the caching will be disabled. * See [[queryCachingDuration]] for more details.
* @param CCacheDependency $dependency the dependency that will be used when saving the query results into cache. * @param CCacheDependency $dependency the dependency for the cached query result.
* @param integer $queryCount number of SQL queries that need to be cached after calling this method. Defaults to 1, * See [[queryCachingDependency]] for more details.
* meaning that the next SQL query will be cached. * @param integer $queryCount number of SQL queries that need to be cached after calling this method.
* See [[queryCachingCount]] for more details.
* @return Connection the connection instance itself. * @return Connection the connection instance itself.
* @since 1.1.7
*/ */
public function cache($duration, $dependency = null, $queryCount = 1) public function cache($duration = 300, $dependency = null, $queryCount = 1)
{ {
$this->queryCachingDuration = $duration; $this->queryCachingDuration = $duration;
$this->queryCachingDependency = $dependency; $this->queryCachingDependency = $dependency;
@ -341,33 +319,28 @@ class Connection extends \yii\base\ApplicationComponent
} }
/** /**
* Opens DB connection if it is currently not * Establishes a DB connection.
* @throws CException if connection fails * It does nothing if a DB connection has already been established.
* @throws Exception if connection fails
*/ */
protected function open() public function open()
{ {
if ($this->_pdo === null) if ($this->pdo === null) {
{ if (empty($this->dsn)) {
if (empty($this->connectionString)) throw new Exception('Connection.dsn cannot be empty.');
throw new CDbException(Yii::t('yii', 'Connection.connectionString cannot be empty.')); }
try try {
{ \Yii::trace('Opening DB connection', __CLASS__);
Yii::trace('Opening DB connection', 'system.db.Connection'); $this->pdo = $this->createPdoInstance();
$this->_pdo = $this->createPdoInstance(); $this->initConnection($this->pdo);
$this->initConnection($this->_pdo);
$this->_active = true;
} }
catch(PDOException $e) catch (\PDOException $e) {
{ if (YII_DEBUG) {
if (YII_DEBUG) throw new Exception('Failed to open DB connection: ' . $e->getMessage(), (int)$e->getCode(), $e->errorInfo);
{
throw new CDbException(Yii::t('yii', 'Connection failed to open the DB connection: {error}',
array('{error}' => $e->getMessage())), (int)$e->getCode(), $e->errorInfo);
} }
else else {
{ \Yii::error($e->getMessage(), __CLASS__);
Yii::log($e->getMessage(), CLogger::LEVEL_ERROR, 'exception.CDbException'); throw new Exception('Failed to open DB connection.', (int)$e->getCode(), $e->errorInfo);
throw new CDbException(Yii::t('yii', 'Connection failed to open the DB connection.'), (int)$e->getCode(), $e->errorInfo);
} }
} }
} }
@ -377,93 +350,82 @@ class Connection extends \yii\base\ApplicationComponent
* Closes the currently active DB connection. * Closes the currently active DB connection.
* It does nothing if the connection is already closed. * It does nothing if the connection is already closed.
*/ */
protected function close() public function close()
{ {
Yii::trace('Closing DB connection', 'system.db.Connection'); if ($this->pdo !== null) {
$this->_pdo = null; \Yii::trace('Closing DB connection', __CLASS__);
$this->_active = false; $this->pdo = null;
$this->_schema = null; $this->_schema = null;
}
} }
/** /**
* Creates the PDO instance. * Creates the PDO instance.
* When some functionalities are missing in the pdo driver, we may use * This method is called by [[open]] to establish a DB connection.
* an adapter class to provides them. * The default implementation will create a PHP `PDO` instance.
* @return PDO the pdo instance * You may override this method if the default `PDO` needs to be adapted for certain DBMS.
* @since 1.0.4 * @return \PDO the pdo instance
*/ */
protected function createPdoInstance() protected function createPdoInstance()
{ {
$pdoClass = $this->pdoClass; $pdoClass = '\PDO';
if (($pos = strpos($this->connectionString, ':')) !== false) if (($pos = strpos($this->dsn, ':')) !== false) {
{ $driver = strtolower(substr($this->dsn, 0, $pos));
$driver = strtolower(substr($this->connectionString, 0, $pos)); if ($driver === 'mssql' || $driver === 'dblib' || $driver === 'sqlsrv') {
if ($driver === 'mssql' || $driver === 'dblib' || $driver === 'sqlsrv') $pdoClass = '\yii\db\dao\mssql\PDO';
$pdoClass = 'CMssqlPdoAdapter'; }
} }
return new $pdoClass($this->connectionString, $this->username, return new $pdoClass($this->dsn, $this->username, $this->password, $this->attributes);
$this->password, $this->_attributes);
} }
/** /**
* Initializes the open db connection. * Initializes the DB connection.
* This method is invoked right after the db connection is established. * This method is invoked right after the DB connection is established.
* The default implementation is to set the charset for MySQL and PostgreSQL database connections. * The default implementation sets the [[charset]] and executes SQLs specified
* @param PDO $pdo the PDO instance * in [[initSQLs]].
*/ */
protected function initConnection($pdo) protected function initConnection()
{ {
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $this->pdo->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
if ($this->emulatePrepare !== null && constant('PDO::ATTR_EMULATE_PREPARES')) if ($this->emulatePrepare !== null && constant('\PDO::ATTR_EMULATE_PREPARES')) {
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, $this->emulatePrepare); $this->pdo->setAttribute(\PDO::ATTR_EMULATE_PREPARES, $this->emulatePrepare);
if ($this->charset !== null)
{
$driver = strtolower($pdo->getAttribute(PDO::ATTR_DRIVER_NAME));
if (in_array($driver, array('pgsql', 'mysql', 'mysqli')))
$pdo->exec('SET NAMES ' . $pdo->quote($this->charset));
} }
if ($this->initSQLs !== null) if ($this->charset !== null) {
{ $driver = strtolower($this->pdo->getAttribute(\PDO::ATTR_DRIVER_NAME));
foreach ($this->initSQLs as $sql) if (in_array($driver, array('pgsql', 'mysql', 'mysqli'))) {
$pdo->exec($sql); $this->pdo->exec('SET NAMES ' . $this->pdo->quote($this->charset));
}
}
if (!empty($this->initSQLs)) {
foreach ($this->initSQLs as $sql) {
$this->pdo->exec($sql);
}
} }
}
/**
* Returns the PDO instance.
* @return PDO the PDO instance, null if the connection is not established yet
*/
public function getPdoInstance()
{
return $this->_pdo;
} }
/** /**
* Creates a command for execution. * Creates a command for execution.
* @param mixed $query the DB query to be executed. This can be either a string representing a SQL statement, * @param mixed $query the DB query to be executed. This can be either a string representing a SQL statement,
* or an array representing different fragments of a SQL statement. Please refer to {@link CDbCommand::__construct} * or an array representing different fragments of a SQL statement. Please refer to [[Command::__construct]]
* for more details about how to pass an array as the query. If this parameter is not given, * for more details about how to pass an array as the query. If this parameter is not given,
* you will have to call query builder methods of {@link CDbCommand} to build the DB query. * you will have to call query builder methods in [[Command]] to build the DB query.
* @return CDbCommand the DB command * @return Command the DB command
*/ */
public function createCommand($query = null) public function createCommand($query = null)
{ {
$this->setActive(true); $this->open();
return new CDbCommand($this, $query); return new Command($this, $query);
} }
/** /**
* Returns the currently active transaction. * Returns the currently active transaction.
* @return CDbTransaction the currently active transaction. Null if no active transaction. * @return Transaction the currently active transaction. Null if no active transaction.
*/ */
public function getCurrentTransaction() public function getCurrentTransaction()
{ {
if ($this->_transaction !== null) if ($this->_transaction !== null && $this->_transaction->getActive()) {
{ return $this->_transaction;
if ($this->_transaction->getActive())
return $this->_transaction;
} }
return null;
} }
/** /**
@ -472,10 +434,10 @@ class Connection extends \yii\base\ApplicationComponent
*/ */
public function beginTransaction() public function beginTransaction()
{ {
Yii::trace('Starting transaction', 'system.db.Connection'); \Yii::trace('Starting transaction', __CLASS__);
$this->setActive(true); $this->open();
$this->_pdo->beginTransaction(); $this->pdo->beginTransaction();
return $this->_transaction = new CDbTransaction($this); return $this->_transaction = new Transaction($this);
} }
/** /**
@ -484,13 +446,13 @@ class Connection extends \yii\base\ApplicationComponent
*/ */
public function getSchema() public function getSchema()
{ {
if ($this->_schema !== null) if ($this->_schema !== null) {
return $this->_schema; return $this->_schema;
else }
{ else {
$driver = $this->getDriverName(); $driver = $this->getDriverName();
if (isset($this->driverMap[$driver])) if (isset($this->schemaMap[$driver]))
return $this->_schema = Yii::createComponent($this->driverMap[$driver], $this); return $this->_schema = Yii::createComponent($this->schemaMap[$driver], $this);
else else
throw new CDbException(Yii::t('yii', 'Connection does not support reading schema for {driver} database.', throw new CDbException(Yii::t('yii', 'Connection does not support reading schema for {driver} database.',
array('{driver}' => $driver))); array('{driver}' => $driver)));
@ -498,16 +460,6 @@ class Connection extends \yii\base\ApplicationComponent
} }
/** /**
* Returns the SQL command builder for the current DB connection.
* @return CDbCommandBuilder the command builder
* @since 1.0.4
*/
public function getCommandBuilder()
{
return $this->getSchema()->getCommandBuilder();
}
/**
* Returns the ID of the last inserted row or sequence value. * Returns the ID of the last inserted row or sequence value.
* @param string $sequenceName name of the sequence object (required by some DBMS) * @param string $sequenceName name of the sequence object (required by some DBMS)
* @return string the row ID of the last row inserted, or the last value retrieved from the sequence object * @return string the row ID of the last row inserted, or the last value retrieved from the sequence object
@ -515,8 +467,8 @@ class Connection extends \yii\base\ApplicationComponent
*/ */
public function getLastInsertID($sequenceName = '') public function getLastInsertID($sequenceName = '')
{ {
$this->setActive(true); $this->open();
return $this->_pdo->lastInsertId($sequenceName); return $this->pdo->lastInsertId($sequenceName);
} }
/** /**
@ -527,14 +479,17 @@ class Connection extends \yii\base\ApplicationComponent
*/ */
public function quoteValue($str) public function quoteValue($str)
{ {
if (is_int($str) || is_float($str)) if (is_int($str) || is_float($str) || is_bool($str)) {
return $str; return $str;
}
$this->setActive(true); $this->open();
if (($value = $this->_pdo->quote($str)) !== false) if (($value = $this->pdo->quote($str)) !== false) {
return $value; return $value;
else // the driver doesn't support quote (e.g. oci) }
else { // the driver doesn't support quote (e.g. oci)
return "'" . addcslashes(str_replace("'", "''", $str), "\000\n\r\\\032") . "'"; return "'" . addcslashes(str_replace("'", "''", $str), "\000\n\r\\\032") . "'";
}
} }
/** /**
@ -560,166 +515,34 @@ class Connection extends \yii\base\ApplicationComponent
} }
/** /**
* Determines the PDO type for the specified PHP type. * Determines the PDO type for the give PHP data type.
* @param string $type The PHP type (obtained by gettype() call). * @param string $type The PHP type (obtained by `gettype()` call).
* @return integer the corresponding PDO type * @return integer the corresponding PDO type
* @see http://www.php.net/manual/en/pdo.constants.php
*/ */
public function getPdoType($type) public function getPdoType($type)
{ {
static $map = array static $map = array(
( 'boolean' => \PDO::PARAM_BOOL,
'boolean' => PDO::PARAM_BOOL, 'integer' => \PDO::PARAM_INT,
'integer' => PDO::PARAM_INT, 'string' => \PDO::PARAM_STR,
'string' => PDO::PARAM_STR, 'NULL' => \PDO::PARAM_NULL,
'NULL' => PDO::PARAM_NULL,
); );
return isset($map[$type]) ? $map[$type] : PDO::PARAM_STR; return isset($map[$type]) ? $map[$type] : PDO::PARAM_STR;
} }
/** /**
* Returns the case of the column names * Returns the name of the DB driver for the current [[dsn]].
* @return mixed the case of the column names
* @see http://www.php.net/manual/en/pdo.setattribute.php
*/
public function getColumnCase()
{
return $this->getAttribute(PDO::ATTR_CASE);
}
/**
* Sets the case of the column names.
* @param mixed $value the case of the column names
* @see http://www.php.net/manual/en/pdo.setattribute.php
*/
public function setColumnCase($value)
{
$this->setAttribute(PDO::ATTR_CASE, $value);
}
/**
* Returns how the null and empty strings are converted.
* @return mixed how the null and empty strings are converted
* @see http://www.php.net/manual/en/pdo.setattribute.php
*/
public function getNullConversion()
{
return $this->getAttribute(PDO::ATTR_ORACLE_NULLS);
}
/**
* Sets how the null and empty strings are converted.
* @param mixed $value how the null and empty strings are converted
* @see http://www.php.net/manual/en/pdo.setattribute.php
*/
public function setNullConversion($value)
{
$this->setAttribute(PDO::ATTR_ORACLE_NULLS, $value);
}
/**
* Returns whether creating or updating a DB record will be automatically committed.
* Some DBMS (such as sqlite) may not support this feature.
* @return boolean whether creating or updating a DB record will be automatically committed.
*/
public function getAutoCommit()
{
return $this->getAttribute(PDO::ATTR_AUTOCOMMIT);
}
/**
* Sets whether creating or updating a DB record will be automatically committed.
* Some DBMS (such as sqlite) may not support this feature.
* @param boolean $value whether creating or updating a DB record will be automatically committed.
*/
public function setAutoCommit($value)
{
$this->setAttribute(PDO::ATTR_AUTOCOMMIT, $value);
}
/**
* Returns whether the connection is persistent or not.
* Some DBMS (such as sqlite) may not support this feature.
* @return boolean whether the connection is persistent or not
*/
public function getPersistent()
{
return $this->getAttribute(PDO::ATTR_PERSISTENT);
}
/**
* Sets whether the connection is persistent or not.
* Some DBMS (such as sqlite) may not support this feature.
* @param boolean $value whether the connection is persistent or not
*/
public function setPersistent($value)
{
return $this->setAttribute(PDO::ATTR_PERSISTENT, $value);
}
/**
* Returns the name of the DB driver
* @return string name of the DB driver * @return string name of the DB driver
*/ */
public function getDriverName() public function getDriverName()
{ {
if (($pos = strpos($this->connectionString, ':')) !== false) if (($pos = strpos($this->dsn, ':')) !== false) {
return strtolower(substr($this->connectionString, 0, $pos)); return strtolower(substr($this->dsn, 0, $pos));
// return $this->getAttribute(PDO::ATTR_DRIVER_NAME); }
} else {
return $this->getAttribute(\PDO::ATTR_DRIVER_NAME);
/** }
* Returns the version information of the DB driver.
* @return string the version information of the DB driver
*/
public function getClientVersion()
{
return $this->getAttribute(PDO::ATTR_CLIENT_VERSION);
}
/**
* Returns the status of the connection.
* Some DBMS (such as sqlite) may not support this feature.
* @return string the status of the connection
*/
public function getConnectionStatus()
{
return $this->getAttribute(PDO::ATTR_CONNECTION_STATUS);
}
/**
* Returns whether the connection performs data prefetching.
* @return boolean whether the connection performs data prefetching
*/
public function getPrefetch()
{
return $this->getAttribute(PDO::ATTR_PREFETCH);
}
/**
* Returns the information of DBMS server.
* @return string the information of DBMS server
*/
public function getServerInfo()
{
return $this->getAttribute(PDO::ATTR_SERVER_INFO);
}
/**
* Returns the version information of DBMS server.
* @return string the version information of DBMS server
*/
public function getServerVersion()
{
return $this->getAttribute(PDO::ATTR_SERVER_VERSION);
}
/**
* Returns the timeout settings for the connection.
* @return integer timeout settings for the connection
*/
public function getTimeout()
{
return $this->getAttribute(PDO::ATTR_TIMEOUT);
} }
/** /**
@ -730,8 +553,8 @@ class Connection extends \yii\base\ApplicationComponent
*/ */
public function getAttribute($name) public function getAttribute($name)
{ {
$this->setActive(true); $this->open();
return $this->_pdo->getAttribute($name); return $this->pdo->getAttribute($name);
} }
/** /**
@ -742,51 +565,25 @@ class Connection extends \yii\base\ApplicationComponent
*/ */
public function setAttribute($name, $value) public function setAttribute($name, $value)
{ {
if ($this->_pdo instanceof PDO) $this->open();
$this->_pdo->setAttribute($name, $value); $this->pdo->setAttribute($name, $value);
else
$this->_attributes[$name] = $value;
}
/**
* Returns the attributes that are previously explicitly set for the DB connection.
* @return array attributes (name=>value) that are previously explicitly set for the DB connection.
* @see setAttributes
* @since 1.1.7
*/
public function getAttributes()
{
return $this->_attributes;
}
/**
* Sets a set of attributes on the database connection.
* @param array $values attributes (name=>value) to be set.
* @see setAttribute
* @since 1.1.7
*/
public function setAttributes($values)
{
foreach ($values as $name => $value)
$this->_attributes[$name] = $value;
} }
/** /**
* Returns the statistical results of SQL executions. * Returns the statistical results of SQL executions.
* The results returned include the number of SQL statements executed and * The results returned include the number of SQL statements executed and
* the total time spent. * the total time spent.
* In order to use this method, {@link enableProfiling} has to be set true. * In order to use this method, [[enableProfiling]] has to be set true.
* @return array the first element indicates the number of SQL statements executed, * @return array the first element indicates the number of SQL statements executed,
* and the second element the total time spent in SQL execution. * and the second element the total time spent in SQL execution.
* @since 1.0.6
*/ */
public function getStats() public function getStats()
{ {
$logger = Yii::getLogger(); $logger = \Yii::getLogger();
$timings = $logger->getProfilingResults(null, 'system.db.CDbCommand.query'); $timings = $logger->getProfilingResults(null, 'yii\db\dao\Command::query');
$count = count($timings); $count = count($timings);
$time = array_sum($timings); $time = array_sum($timings);
$timings = $logger->getProfilingResults(null, 'system.db.CDbCommand.execute'); $timings = $logger->getProfilingResults(null, 'yii\db\dao\Command::execute');
$count += count($timings); $count += count($timings);
$time += array_sum($timings); $time += array_sum($timings);
return array($count, $time); return array($count, $time);

Write Preview
Loading…
Cancel
Save