database refactoring.

system/db.php

@@ -1,127 +0,0 @@
-<?php namespace System;
-
-class DB {
-
-	/**
-	 * The established database connections.
-	 *
-	 * @var array
-	 */
-	public static $connections = array();
-
-	/**
-	 * Get a database connection. If no database name is specified, the default
-	 * connection will be returned as defined in the db configuration file.
-	 *
-	 * Note: Database connections are managed as singletons.
-	 *
-	 * @param  string  $connection
-	 * @return PDO
-	 */
-	public static function connection($connection = null)
-	{
-		if (is_null($connection))
-		{
-			$connection = Config::get('db.default');
-		}
-
-		if ( ! array_key_exists($connection, static::$connections))
-		{
-			static::$connections[$connection] = DB\Connector::connect($connection);
-		}
-
-		return static::$connections[$connection];
-	}
-
-	/**
-	 * Execute a SQL query against the connection and return the first result.
-	 *
-	 * @param  string  $sql
-	 * @param  array   $bindings
-	 * @param  string  $connection
-	 * @return object
-	 */
-	public static function first($sql, $bindings = array(), $connection = null)
-	{
-		return (count($results = static::query($sql, $bindings, $connection)) > 0) ? $results[0] : null;
-	}
-
-	/**
-	 * Execute a SQL query against the connection.
-	 *
-	 * The method returns the following based on query type:
-	 *
-	 *     SELECT -> Array of stdClasses
-	 *     UPDATE -> Number of rows affected.
-	 *     DELETE -> Number of Rows affected.
-	 *     ELSE   -> Boolean true / false depending on success.
-	 *
-	 * @param  string  $sql
-	 * @param  array   $bindings
-	 * @param  string  $connection
-	 * @return array
-	 */
-	public static function query($sql, $bindings = array(), $connection = null)
-	{
-		$query = static::connection($connection)->prepare($sql);
-
-		$result = $query->execute($bindings);
-
-		if (strpos(strtoupper($sql), 'SELECT') === 0)
-		{
-			return $query->fetchAll(\PDO::FETCH_CLASS, 'stdClass');
-		}
-		elseif (strpos(strtoupper($sql), 'UPDATE') === 0 or strpos(strtoupper($sql), 'DELETE') === 0)
-		{
-			return $query->rowCount();
-		}
-		else
-		{
-			return $result;
-		}
-	}
-
-	/**
-	 * Begin a fluent query against a table.
-	 *
-	 * This method is simply a convenient shortcut into Query::table.
-	 *
-	 * @param  string  $table
-	 * @param  string  $connection
-	 * @return Query
-	 */
-	public static function table($table, $connection = null)
-	{
-		return new DB\Query($table, $connection);
-	}
-
-	/**
-	 * Get the driver name for a database connection.
-	 *
-	 * @param  string  $connection
-	 * @return string
-	 */
-	public static function driver($connection = null)
-	{
-		return static::connection($connection)->getAttribute(\PDO::ATTR_DRIVER_NAME);
-	}
-
-	/**
-	 * Get the table prefix for a database connection.
-	 *
-	 * @param  string  $connection
-	 * @return string
-	 */
-	public static function prefix($connection = null)
-	{
-		$connections = Config::get('db.connections');
-
-		if (is_null($connection))
-		{
-			$connection = Config::get('db.default');
-		}
-
-		return (array_key_exists('prefix', $connections[$connection])) ? $connections[$connection]['prefix'] : '';
-	}
-
-}