Use type map for database and collection enumeration

This obviates the need to handle stdClass instances within the results.

composer.json

@@ -10,7 +10,7 @@
         { "name": "Derick Rethans", "email": "github@derickrethans.nl" }
     ],
     "require": {
-        "ext-mongodb": "*"
+        "ext-mongodb": ">=0.5.0"
     },
     "require-dev": {
         "fzaninotto/faker": "~1.0"

src/Client.php

@@ -63,24 +63,20 @@ class Client
         $command = new Command(array('listDatabases' => 1));
 
         $cursor = $this->manager->executeCommand('admin', $command);
+        $cursor->setTypeMap(array('document' => 'array'));
         $result = current($cursor->toArray());
 
         if ( ! isset($result['databases']) || ! is_array($result['databases'])) {
             throw new UnexpectedValueException('listDatabases command did not return a "databases" array');
         }
 
-        $databases = array_map(
-            function(stdClass $database) { return (array) $database; },
-            $result['databases']
-        );
-
         /* Return an Iterator instead of an array in case listDatabases is
          * eventually changed to return a command cursor, like the collection
          * and index enumeration commands. This makes the "totalSize" command
          * field inaccessible, but users can manually invoke the command if they
          * need that value.
          */
-        return new DatabaseInfoLegacyIterator($databases);
+        return new DatabaseInfoLegacyIterator($result['databases']);
     }
 
     /**

src/Database.php

@@ -141,6 +141,7 @@ class Database
     {
         $command = new Command(array('listCollections' => 1) + $options);
         $cursor = $server->executeCommand($this->databaseName, $command);
+        $cursor->setTypeMap(array('document' => 'array'));
 
         return new CollectionInfoCommandIterator($cursor);
     }
@@ -177,6 +178,7 @@ class Database
         $namespace = $this->databaseName . '.system.namespaces';
         $query = new Query($filter);
         $cursor = $server->executeQuery($namespace, $query);
+        $cursor->setTypeMap(array('document' => 'array'));
 
         return new CollectionInfoLegacyIterator($cursor);
     }