return nothing on e.g. where({id:[]})

lib/stores/sql/helper.js

@@ -46,6 +46,12 @@ exports.applyConditions = function(conditions, table_map, query, having){
         if(table_map[name_tree.join('.')]) table = table_map[name_tree.join('.')];
       }
 
+      if(value instanceof Array && value.length === 0){
+        value = null;
+        operator = 'is';
+      }
+
+
       if(value instanceof Array){
         var condition;
 

package.json

@@ -1,6 +1,6 @@
 {
     "name": "openrecord",
-    "version": "0.16.3",
+    "version": "0.16.5",
     "description": "Active record like ORM for nodejs",
     "keywords": ["orm", "record", "sql", "sqlite3", "postgres", "pg", "mysql", "database", "activerecord", "promise", "rest", "restify", "nested set"],
     "author": "Philipp Waldmann <philipp.waldmann@s-team.at>",

test/sql/__shared/conditions-test.js

@@ -287,6 +287,17 @@ module.exports = function(title, beforeFn, afterFn, store_conf){
         });      
       });
 
+
+      it('finds nothing with empty array in condition (IS NULL))', function(next){
+        store.ready(function(){
+          var User = store.Model('User');
+          User.where({login: []}).exec(function(result){
+            result.length.should.be.equal(0);
+            next();
+          });
+        });      
+      });
+
 
     });