better sql error handling and new request data get function

DataStorage/Database/DataMapperAbstract.php

@@ -601,7 +601,7 @@ class DataMapperAbstract implements DataMapperInterface
             }
         } catch (\Throwable $t) {
             \var_dump($t->getMessage());
-            \var_dump($query->toSql());
+            \var_dump($a = $query->toSql());
             return -1;
         }
 
@@ -2271,7 +2271,10 @@ class DataMapperAbstract implements DataMapperInterface
                     static::$ownsOne[$def['internal']]['mapper']::fillRelations($value, self::$relations, $depth - 1);
                 }
 
+                if (!empty($value)) {
+                    // todo: find better solution. this was because of a bug with the sales billing list query depth = 4. The address was set (from the client, referral or creator) but then somehow there was a second address element which was all null and null cannot be asigned to a string variable (e.g. country). The problem with this solution is that if the model expects an initialization (e.g. at lest set the elements to null, '', 0 etc.) this is now not done.
                     $refProp->setValue($obj, $value);
+                }
             } elseif (isset(static::$belongsTo[$def['internal']])) {
                 $default = null;
                 if ($depth - 1 < 1 && $refProp->isInitialized($obj)) {
@@ -2556,7 +2559,7 @@ class DataMapperAbstract implements DataMapperInterface
         int $depth = 3
     ) : array
     {
-        $query = self::getQuery();
+        $query = self::getQuery(depth: $depth);
         $query->where(static::$table . '_' . $depth . '.' . ($column !== null ? self::getColumnByMember($column) : static::$primaryField), '>', $pivot)
             ->orderBy(static::$table . '_' . $depth . '.' . ($column !== null ? self::getColumnByMember($column) : static::$primaryField), $order)
             ->limit($limit);

DataStorage/Database/Query/Builder.php

@@ -1401,6 +1401,7 @@ class Builder extends BuilderAbstract
      */
     public function execute() : mixed
     {
+        try {
             $sth = $this->connection->con->prepare($this->toSql());
 
             foreach ($this->binds as $key => $bind) {
@@ -1410,6 +1411,9 @@ class Builder extends BuilderAbstract
             }
 
             $sth->execute();
+        } catch (\Throwable $t) {
+            var_dump($this->toSql());
+        }
 
         return $sth;
     }

Message/RequestAbstract.php

@@ -78,12 +78,13 @@ abstract class RequestAbstract implements MessageInterface
      * Get data.
      *
      * @param string $key  Data key
+     * @param string $type Return type
      *
      * @return mixed
      *
      * @since 1.0.0
      */
-    public function getData(string $key = null) : mixed
+    public function getData(string $key = null, string $type = null) : mixed
     {
         if ($key === null) {
             return $this->data;
@@ -91,9 +92,26 @@ abstract class RequestAbstract implements MessageInterface
 
         $key = \mb_strtolower($key);
 
+        if ($type === null) {
             return $this->data[$key] ?? null;
         }
 
+        if (!isset($this->data[$key])) {
+            return null;
+        }
+
+        switch ($type) {
+            case 'int':
+                return (int) $this->data[$key];
+            case 'string':
+                return (string) $this->data[$key];
+            case 'float':
+                return (float) $this->data[$key];
+            default:
+                return $this->data[$key];
+        }
+    }
+
     /**
      * Get data.
      *