Add objectSchema method to Realm Object (#1055)

* Add objectSchema property to Realm Object

* fix

lib/browser/objects.js

@@ -30,6 +30,7 @@ export default class RealmObject {
 // Non-mutating methods:
 createMethods(RealmObject.prototype, objectTypes.OBJECT, [
     'isValid',
+    'objectSchema'
 ]);
 
 export function clearRegisteredConstructors() {

src/js_realm_object.hpp

@@ -18,12 +18,13 @@
 
 #pragma once
 
+#include "object_accessor.hpp"
+#include "object_store.hpp"
+
 #include "js_class.hpp"
 #include "js_types.hpp"
 #include "js_util.hpp"
-
-#include "object_accessor.hpp"
-#include "object_store.hpp"
+#include "js_schema.hpp"
 
 namespace realm {
 namespace js {
@@ -49,6 +50,7 @@ struct RealmObjectClass : ClassDefinition<T, realm::Object> {
     static std::vector<String> get_property_names(ContextType, ObjectType);
     
     static void is_valid(ContextType, FunctionType, ObjectType, size_t, const ValueType [], ReturnValue &);
+    static void get_object_schema(ContextType, FunctionType, ObjectType, size_t, const ValueType [], ReturnValue &);
 
     const std::string name = "RealmObject";
 
@@ -60,6 +62,7 @@ struct RealmObjectClass : ClassDefinition<T, realm::Object> {
 
     MethodMap<T> const methods = {
         {"isValid", wrap<is_valid>},
+        {"objectSchema", wrap<get_object_schema>},
     };
 };
 
@@ -68,6 +71,12 @@ void RealmObjectClass<T>::is_valid(ContextType ctx, FunctionType, ObjectType thi
     return_value.set(get_internal<T, RealmObjectClass<T>>(this_object)->is_valid());
 }
     
+template<typename T>
+void RealmObjectClass<T>::get_object_schema(ContextType ctx, FunctionType, ObjectType this_object, size_t argc, const ValueType arguments[], ReturnValue &return_value) {
+    auto object = get_internal<T, RealmObjectClass<T>>(this_object);
+    return_value.set(Schema<T>::object_for_object_schema(ctx, object->get_object_schema()));
+}
+    
 template<typename T>
 typename T::Object RealmObjectClass<T>::create_instance(ContextType ctx, realm::Object realm_object) {
     static String prototype_string = "prototype";

tests/js/object-tests.js

@@ -470,6 +470,19 @@ module.exports = {
             obj.doubleCol;
         });
     },
+    
+    testObjectSchema: function() {
+        var realm = new Realm({schema: [schemas.TestObject]});
+        var obj;
+        realm.write(function() {
+            obj = realm.create('TestObject', {doubleCol: 1});
+        });
+
+        const schema = obj.objectSchema();
+        TestCase.assertEqual(schema.name, schemas.TestObject.name);
+        TestCase.assertArraysEqual(Object.keys(schema.properties), Object.keys(schemas.TestObject.properties));
+        TestCase.assertEqual(schema.properties.doubleCol.type, 'double');
+    },
 
     testIgnoredProperties: function() {
         var realm = new Realm({schema: [schemas.TestObject]});