From 481282708c645d31d847e3001fc8a01105cbe08b Mon Sep 17 00:00:00 2001
From: Mariusz Nowak <mariusz@medikoo.com>
Date: Wed, 22 Jan 2014 10:48:06 +0100
Subject: [PATCH] `isDbjsObject` and `validDbjsObject`

---
 is-dbjs-nested-object.js  |  6 +++---
 is-dbjs-object.js         |  8 ++++++++
 test/is-dbjs-object.js    | 19 +++++++++++++++++++
 test/valid-dbjs-object.js | 23 +++++++++++++++++++++++
 valid-dbjs-object.js      |  8 ++++++++
 5 files changed, 61 insertions(+), 3 deletions(-)
 create mode 100644 is-dbjs-object.js
 create mode 100644 test/is-dbjs-object.js
 create mode 100644 test/valid-dbjs-object.js
 create mode 100644 valid-dbjs-object.js

diff --git a/is-dbjs-nested-object.js b/is-dbjs-nested-object.js
index 2311a7c..964f6e7 100644
--- a/is-dbjs-nested-object.js
+++ b/is-dbjs-nested-object.js
@@ -1,11 +1,11 @@
 'use strict';
 
-var startsWith = require('es5-ext/string/#/starts-with')
-  , isDbjsKind = require('./is-dbjs-kind');
+var startsWith   = require('es5-ext/string/#/starts-with')
+  , isDbjsObject = require('./is-dbjs-object');
 
 module.exports = function (value/*, owner*/) {
 	var owner = arguments[1];
-	if (!isDbjsKind(value)) return false;
+	if (!isDbjsObject(value)) return false;
 	if (!value.owner || !value.owner.__id__) return false;
 	if (!startsWith.call(value.__id__, value.owner.__id__ + '/')) return false;
 	if (owner == null) return true;
diff --git a/is-dbjs-object.js b/is-dbjs-object.js
new file mode 100644
index 0000000..b75e87f
--- /dev/null
+++ b/is-dbjs-object.js
@@ -0,0 +1,8 @@
+'use strict';
+
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+
+module.exports = function (value) {
+	return (value && hasOwnProperty.call(value, '__id__') &&
+		(value._kind_ === 'object')) || false;
+};
diff --git a/test/is-dbjs-object.js b/test/is-dbjs-object.js
new file mode 100644
index 0000000..99baf67
--- /dev/null
+++ b/test/is-dbjs-object.js
@@ -0,0 +1,19 @@
+'use strict';
+
+var Database = require('../');
+
+module.exports = function (t, a) {
+	var db = new Database(), obj = new db.Object();
+
+	a(t(), false, "Undefined");
+	a(t(null), false, "Null");
+	a(t('raz'), false, "String");
+	a(t(2342), false, "Number");
+	a(t(new Date()), false, "Date");
+	a(t(new db.DateTime()), false, "Date out of database");
+	a(t({}), false, "Plain object");
+	a(t(obj), true, "Db object");
+	a(t(obj.$getOwn('test')), false, "Db descriptor");
+	a(t(obj.$getOwn('test').$getOwn('raz')), false, "Db descriptor's descriptor");
+	a(t(obj._getMultiple_('test').$getOwn('raz')), false, "Db item");
+};
diff --git a/test/valid-dbjs-object.js b/test/valid-dbjs-object.js
new file mode 100644
index 0000000..9ed5b40
--- /dev/null
+++ b/test/valid-dbjs-object.js
@@ -0,0 +1,23 @@
+'use strict';
+
+var Database = require('../');
+
+module.exports = function (t, a) {
+	var db = new Database(), obj = new db.Object(), desc, item;
+
+	a.throws(function () { t(); }, TypeError, "Undefined");
+	a.throws(function () { t(null); }, TypeError, "Null");
+	a.throws(function () { t('raz'); }, TypeError, "String");
+	a.throws(function () { t(2342); }, TypeError, "Number");
+	a.throws(function () { t(new Date()); }, TypeError, "Date");
+	a.throws(function () { t(new db.DateTime()); }, TypeError,
+		"Date out of database");
+	a.throws(function () { t({}); }, TypeError, "Plain object");
+	a(t(obj), obj, "Db object");
+	desc = obj.$getOwn('test');
+	a.throws(function () { t(desc); }, TypeError, "Db descriptor");
+	desc = desc.$getOwn('raz');
+	a.throws(function () { t(desc); }, TypeError, "Db descriptor's descriptor");
+	item = obj._getMultiple_('test').$getOwn('raz');
+	a.throws(function () { t(item); }, TypeError, "Db item");
+};
diff --git a/valid-dbjs-object.js b/valid-dbjs-object.js
new file mode 100644
index 0000000..71f7de6
--- /dev/null
+++ b/valid-dbjs-object.js
@@ -0,0 +1,8 @@
+'use strict';
+
+var isDbjsObject = require('./is-dbjs-object');
+
+module.exports = function (value) {
+	if (isDbjsObject(value)) return value;
+	throw new TypeError(value + " is not dbjs object");
+};