91 lines
2.4 KiB
PHP
91 lines
2.4 KiB
PHP
<?php namespace Laravel;
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class DB {
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/**
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* The established database connections.
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*
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* @var array
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*/
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public static $connections = array();
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/**
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* Get a database connection. If no database name is specified, the default
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* connection will be returned as defined in the db configuration file.
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*
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* Note: Database connections are managed as singletons.
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*
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* <code>
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* // Get the default database connection
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* $connection = DB::connection();
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*
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* // Get a specific database connection
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* $connection = DB::connection('mysql');
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* </code>
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*
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* @param string $connection
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* @return DB\Connection
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*/
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public static function connection($connection = null)
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{
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if (is_null($connection)) $connection = Config::get('db.default');
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if ( ! array_key_exists($connection, static::$connections))
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{
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if (is_null($config = Config::get('db.connections.'.$connection)))
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{
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throw new \Exception("Database connection [$connection] is not defined.");
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}
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$connector = DB\Connector\Factory::make($config);
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static::$connections[$connection] = new DB\Connection($connection, $config, $connector);
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}
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return static::$connections[$connection];
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}
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/**
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* Begin a fluent query against a table.
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*
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* This method primarily serves as a short-cut to the $connection->table() method.
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*
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* <code>
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* // Begin a fluent query against the "users" table
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* $query = DB::table('users');
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*
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* // Equivalent call using the connection table method.
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* $query = DB::connection()->table('users');
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*
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* // Begin a fluent query against the "users" table for a specific connection
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* $query = DB::table('users', 'mysql');
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* </code>
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*
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* @param string $table
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* @param string $connection
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* @return DB\Query
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*/
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public static function table($table, $connection = null)
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{
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return static::connection($connection)->table($table);
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}
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/**
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* Magic Method for calling methods on the default database connection.
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*
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* This provides a convenient API for querying or examining the default database connection.
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*
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* <code>
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* // Run a query against the default database connection
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* $results = DB::query('select * from users');
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*
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* // Equivalent call using the connection instance
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* $results = DB::connection()->query('select * from users');
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* </code>
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*/
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public static function __callStatic($method, $parameters)
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{
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return call_user_func_array(array(static::connection(), $method), $parameters);
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}
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} |