Merge pull request #1 from krasun/master

Add in and not in comparison operators

src/Solution/MongoAggregation/Pipeline/Operators/Comparison/In.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Solution\MongoAggregation\Pipeline\Operators\Comparison;
+
+use Solution\MongoAggregation\Pipeline\Operators\Operator;
+
+class In extends Operator
+{
+    function getName()
+    {
+        return 'in';
+    }
+} 

src/Solution/MongoAggregation/Pipeline/Operators/Comparison/Nin.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Solution\MongoAggregation\Pipeline\Operators\Comparison;
+
+use Solution\MongoAggregation\Pipeline\Operators\Operator;
+
+class Nin extends Operator
+{
+    function getName()
+    {
+        return 'nin';
+    }
+} 

src/Solution/MongoAggregation/Pipeline/Operators/Expr.php

@@ -172,6 +172,23 @@ public function ne($arg)
         return new Operators\Comparison\Ne($arg);
     }
 
+    /**
+     * @param $arg
+     * @return Comparison\In
+     */
+    public function in($arg)
+    {
+        return new Operators\Comparison\In($arg);
+    }
+
+    /**
+     * @param $arg
+     * @return Comparison\Nin
+     */
+    public function nin($arg)
+    {
+        return new Operators\Comparison\Nin($arg);
+    }
 
     /**
      * @param $arg

tests/Tests/Operators/OperatorTest.php

@@ -38,6 +38,8 @@ static public function operators()
             ['lt', 'lt'],
             ['lte', 'lte'],
             ['ne', 'ne'],
+            ['in', 'in'],
+            ['nin', 'nin'],
             //conditional
             ['cond', 'cond'],
             ['ifNull', 'ifNull'],