- Added caching mechanism as an event listener

src/QueryBuilder/SqlQueryBuilder.php

@@ -7,6 +7,9 @@ use Ulmus\Query\QueryFragmentInterface;
 # TODO -> Extract from MysqlQueryBuilder to build an ISO/IEC 9075:2023 compatible layer for a basic SQL QueryBuilder
 class SqlQueryBuilder implements QueryBuilderInterface
 {
+    protected string $rendered;
+
+    protected string $hash;
 
     public function push(QueryFragmentInterface $queryFragment): QueryBuilderInterface
     {
@@ -18,7 +21,7 @@ class SqlQueryBuilder implements QueryBuilderInterface
         // TODO: Implement pull() method.
     }
 
-    public function render(bool $skipToken = false)
+    public function render(bool $skipToken = false) : mixed
     {
         // TODO: Implement render() method.
     }
@@ -37,4 +40,9 @@ class SqlQueryBuilder implements QueryBuilderInterface
     {
         // TODO: Implement removeFragment() method.
     }
+
+    public function hashSerializedQuery(): string
+    {
+        return $this->hash ??= md5(sprintf("%s:%s", $this->render(), serialize($this->parameters)));
+    }
 }