merged skunkworks into develop.

laravel/cache/drivers/database.php

@@ -0,0 +1,113 @@
+<?php namespace Laravel\Cache\Drivers;
+
+use Laravel\Config;
+use Laravel\Database as DB;
+use Laravel\Database\Connection;
+
+class Database extends Driver {
+
+	/**
+	 * The cache key from the cache configuration file.
+	 *
+	 * @var string
+	 */
+	protected $key;
+
+	/**
+	 * Create a new database cache driver instance.
+	 *
+	 * @param  string  $key
+	 * @return void
+	 */
+	public function __construct($key)
+	{
+		$this->key = $key;
+	}
+
+	/**
+	 * Determine if an item exists in the cache.
+	 *
+	 * @param  string  $key
+	 * @return bool
+	 */
+	public function has($key)
+	{
+		return ( ! is_null($this->get($key)));
+	}
+
+	/**
+	 * Retrieve an item from the cache driver.
+	 *
+	 * @param  string  $key
+	 * @return mixed
+	 */
+	protected function retrieve($key)
+	{
+		$cache = $this->table()->where('key', '=', $this->key.$key)->first();
+
+		if ( ! is_null($cache))
+		{
+			if (time() >= $cache->expiration) return $this->forget($key);
+
+			return unserialize($cache->value);
+		}
+	}
+
+	/**
+	 * Write an item to the cache for a given number of minutes.
+	 *
+	 * <code>
+	 *		// Put an item in the cache for 15 minutes
+	 *		Cache::put('name', 'Taylor', 15);
+	 * </code>
+	 *
+	 * @param  string  $key
+	 * @param  mixed   $value
+	 * @param  int     $minutes
+	 * @return void
+	 */
+	public function put($key, $value, $minutes)
+	{
+		$key = $this->key.$key;
+
+		$value = serialize($value);
+
+		$expiration = $this->expiration($minutes);
+
+		// To update the value, we'll first attempt an insert against the
+		// database and if we catch an exception, we'll assume that the
+		// primary key already exists in the table and update.
+		try
+		{
+			$this->table()->insert(compact('key', 'value', 'expiration'));
+		}
+		catch (\Exception $e)
+		{
+			$this->table()->where('key', '=', $key)->update(compact('value', 'expiration'));
+		}
+	}
+
+	/**
+	 * Delete an item from the cache.
+	 *
+	 * @param  string  $key
+	 * @return void
+	 */
+	public function forget($key)
+	{
+		$this->table()->where('key', '=', $this->key.$key)->delete();
+	}
+
+	/**
+	 * Get a query builder for the database table.
+	 *
+	 * @return Query
+	 */
+	protected function table()
+	{
+		$connection = DB::connection(Config::get('cache.database.connection'));
+
+		return $connection->table(Config::get('cache.database.table'));
+	}
+
+}

laravel/cache/drivers/driver.php

@@ -28,9 +28,7 @@ abstract class Driver {
 	 */
 	public function get($key, $default = null)
 	{
-		if ( ! is_null($item = $this->retrieve($key))) return $item;
-
-		return ($default instanceof Closure) ? call_user_func($default) : $default;
+		return ( ! is_null($item = $this->retrieve($key))) ? $item : value($default);
 	}
 
 	/**
@@ -57,8 +55,7 @@ abstract class Driver {
 	abstract public function put($key, $value, $minutes);
 
 	/**
-	 * Get an item from the cache. If the item doesn't exist in the
-	 * cache, store the default value in the cache and return it.
+	 * Get an item from the cache, or cache and return the default value.
 	 *
 	 * <code>
 	 *		// Get an item from the cache, or cache a value for 15 minutes
@@ -77,9 +74,7 @@ abstract class Driver {
 	{
 		if ( ! is_null($item = $this->get($key, null))) return $item;
 
-		$default = ($default instanceof Closure) ? call_user_func($default) : $default;
-
-		$this->put($key, $default, $minutes);
+		$this->put($key, value($default), $minutes);
 
 		return $default;
 	}
@@ -92,4 +87,15 @@ abstract class Driver {
 	 */
 	abstract public function forget($key);
 
+	/**
+	 * Get the expiration time as a UNIX timestamp.
+	 *
+	 * @param  int  $minutes
+	 * @return int
+	 */
+	protected function expiration($minutes)
+	{
+		return time() + ($minutes * 60);
+	}
+
 }

laravel/cache/drivers/file.php

@@ -68,7 +68,7 @@ class File extends Driver {
 	 */
 	public function put($key, $value, $minutes)
 	{
-		$value = (time() + ($minutes * 60)).serialize($value);
+		$value = $this->expiration($minutes).serialize($value);
 
 		file_put_contents($this->path.$key, $value, LOCK_EX);
 	}
@@ -81,10 +81,7 @@ class File extends Driver {
 	 */
 	public function forget($key)
 	{
-		if (file_exists($this->path.$key))
-		{
-			@unlink($this->path.$key);
-		}
+		if (file_exists($this->path.$key)) @unlink($this->path.$key);
 	}
 
 }