Enhanced repository interface

src/Composer/Repository/RepositoryInterface.php

@@ -12,10 +12,34 @@
 
 namespace Composer\Repository;
 
+use Composer\Package\PackageInterface;
+
 /**
+ * Repository interface.
+ *
  * @author Nils Adermann <naderman@naderman.de>
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
  */
 interface RepositoryInterface extends \Countable
 {
+    /**
+     * Initializes repository (reads file, opens connection).
+     */
+    function initialize();
+
+    /**
+     * Checks if specified package registered (installed).
+     *
+     * @param   PackageInterface    $package    package instance
+     *
+     * @return  Boolean
+     */
+    function hasPackage(PackageInterface $package);
+
+    /**
+     * Returns list of registered packages.
+     *
+     * @return  array
+     */
     function getPackages();
 }