Update README.md

README.md

@@ -1,9 +1,87 @@
 # deepr-php
 
-### WIP
-
-PHP API library following Deepr specification 
+PHP API library following Deepr specification
 
 https://github.com/deeprjs/deepr
 
-https://refactoring.guru/design-patterns/composite
+
+### Example
+
+```php
+
+function applyColumns(IComponent $object, array $row)
+{
+    foreach ($row as $column => $value) {
+        if (property_exists($object, $column))
+            $object->$column = $value;
+    }
+}
+
+class Movies extends Collection implements ILoadable
+{
+    public $count;
+
+    public function __construct()
+    {
+        $this->count = DB::getMoviesCount();
+    }
+
+    public function load(): array
+    {
+        $items = [];
+        foreach (DB::getMovies() as $row) {
+            $movie = new Movie();
+            applyColumns($movie, $row);
+            $items[] = $movie;
+        }
+        return $items;
+    }
+
+    public function getByTitle(string $title): Collection
+    {
+        $collection = new self();
+
+        $movie = new Movie();
+        $row = DB::getMovieByTitle($title);
+        applyColumns($movie, $row);
+        $collection->add($movie);
+
+        return $collection;
+    }
+}
+
+class Movie extends Collection
+{
+    public $_id;
+    public $title;
+    public $released;
+    public $tagline;
+}
+
+class Root extends Collection
+{
+    public $movies = Movies::class;
+}
+
+$deepr = new Deepr();
+$json = '{"movies": {"count": true, "[]": [0, 2],"title": true, "released": true}}';
+$collection = new Root();
+$deepr->invokeQuery($collection, json_decode($j, true));
+echo '<pre>' . json_encode($collection->execute(), JSON_PRETTY_PRINT) . '</pre>' . PHP_EOL;
+
+/*
+{
+    "movies": {
+        "count": 38,
+        "0": {
+            "title": "The Matrix",
+            "released": 1999
+        },
+        "1": {
+            "title": "The Matrix Reloaded",
+            "released": 2003
+        }
+    }
+}
+*/
+```