From a9f2d09c80528f23c5dbe6c22d5dc5e21284523a Mon Sep 17 00:00:00 2001
From: Yonas Habteab <yonas.habteab@netways.de>
Date: Mon, 15 Nov 2021 15:10:58 +0100
Subject: [PATCH] FilterProcessor: Assemble `HasValue` & `HasNotValue` filter
 rules predicate

---
 src/Compat/FilterProcessor.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/Compat/FilterProcessor.php b/src/Compat/FilterProcessor.php
index b6c9bdc..f6c51ac 100644
--- a/src/Compat/FilterProcessor.php
+++ b/src/Compat/FilterProcessor.php
@@ -76,15 +76,17 @@ public static function assemblePredicate(Filter\Condition $filter)
             ($filter instanceof Filter\Equal || $filter instanceof Filter\Unequal)
             && strpos($expression, '*') !== false
         ) {
-            if ($expression === '*') {
-                return ["$column IS " . ($filter instanceof Filter\Equal ? 'NOT ' : '') . 'NULL'];
-            } elseif ($filter instanceof Filter\Unequal) {
+            if ($filter instanceof Filter\Unequal) {
                 return ["($column NOT LIKE ? OR $column IS NULL)" => str_replace('*', '%', $expression)];
             } else {
                 return ["$column LIKE ?" => str_replace('*', '%', $expression)];
             }
         } elseif ($filter instanceof Filter\Unequal) {
             return ["($column != ? OR $column IS NULL)" => $expression];
+        } elseif ($filter instanceof Filter\HasNotValue) {
+            return ["$column IS NULL"];
+        } elseif ($filter instanceof  Filter\HasValue) {
+            return ["$column IS NOT NULL"];
         } else {
             if ($filter instanceof Filter\Equal) {
                 $operator = '=';