Merge remote-tracking branch 'origin/master' into maintenance

Author: JanHolger

src/main/java/org/javawebstack/orm/query/Query.java

@@ -187,6 +187,16 @@ public Query<T> notNull(Object left) {
         where.notNull(left);
         return this;
     }
+    
+    public Query<T> whereNull(Object left) {
+        where.isNull(left);
+        return this;
+    }
+    
+    public Query<T> whereNotNull(Object left) {
+        where.notNull(left);
+        return this;
+    }
 
     public Query<T> lessThan(Object left, Object right) {
         where.lessThan(left, right);

src/main/java/org/javawebstack/orm/query/QueryGroup.java

@@ -80,6 +80,14 @@ public QueryGroup<T> isNull(Object left) {
     public QueryGroup<T> notNull(Object left) {
         return where(left, "IS NOT NULL", null);
     }
+    
+    public QueryGroup<T> whereNull(Object left) {
+        return where(left, "IS NULL", null);
+    }
+    
+    public QueryGroup<T> whereNotNull(Object left) {
+        return where(left, "IS NOT NULL", null);
+    }
 
     public QueryGroup<T> lessThan(Object left, Object right) {
         return where(left, "<", right);