Adapt to doctrine/orm 3

- use QueryBuilder::resetDQLPart insead of add( , null)
- adapt composer.json
- did composer update

composer.json

@@ -15,7 +15,7 @@
         "php": ">=7.2.5",
         "symfony/http-kernel": "^4.4 || ^5.1 || ^6.0 || ^7.0",
         "api-platform/core": "^2.7 || ^3.0",
-        "doctrine/orm": "^2.7"
+        "doctrine/orm": "^2.14 || ^3.0"
     },
     "require-dev": {
     },

src/Filter/DateFilter.php

@@ -52,12 +52,16 @@ protected function filterProperty(string $property, $values, QueryBuilder $query
         }
 
         $oldWhere = $queryBuilder->getDQLPart('where');
-        $queryBuilder->add('where', null);
+        $queryBuilder->resetDQLPart('where');
 
         $this->inner->apply($queryBuilder, $queryNameGenerator, $resourceClass, $operation, $contextCopy);
 
         $expressions = $queryBuilder->getDQLPart('where')->getParts();
-        $queryBuilder->add('where', $oldWhere);
+        if ($oldWhere === null) {
+            $queryBuilder->resetDQLPart('where');
+        } else {
+            $queryBuilder->add('where', $oldWhere); //restores old where
+        }
 
         $isNotNull = array_shift($expressions);
         foreach ($expressions as $expr) {

src/Filter/FilterLogic.php

@@ -142,7 +142,11 @@ protected function doGenerate($queryBuilder, $queryNameGenerator, $resourceClass
         $this->applyFilters($queryBuilder, $queryNameGenerator, $resourceClass, $operation, $subcontext);
 
         $newWhere = $queryBuilder->getDQLPart('where');
-        $queryBuilder->add('where', $oldWhere); //restores old where
+        if ($oldWhere === null) {
+            $queryBuilder->resetDQLPart('where');
+        } else {
+            $queryBuilder->add('where', $oldWhere); //restores old where
+        }
 
         // force $operator logic upon $newWhere
         $expressions = $this->getAppliedExpressions($newWhere, $marker);