🐛 Throw if we cannot lazy load

src/TDBMCannotLazyLoadInheritanceException.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace TheCodingMachine\TDBM;
+
+/**
+ * Exception thrown when TDBM cannot lazy load a bean because this bean is used in inheritance.
+ */
+class TDBMCannotLazyLoadInheritanceException extends TDBMException
+{
+    /**
+     * @param string[] $tables
+     */
+    public static function create(array $tables): TDBMCannotLazyLoadInheritanceException
+    {
+        return new self(sprintf('Failed to lazy load the tables (%s) as they are part of inheritance.', implode(', ', $tables)));
+    }
+}

src/TDBMService.php

@@ -1253,6 +1253,8 @@ public function findObjectByPk(string $table, array $primaryKeys, array $additio
 
                 return $bean;
             }
+
+            throw TDBMCannotLazyLoadInheritanceException::create($tables);
         }
 
         // Did not find the object in cache? Let's query it!

tests/TDBMDaoGeneratorTest.php

@@ -2464,6 +2464,14 @@ public function testHydrateGetByIdAfterLazyLoad(): void
         $this->assertSame(TDBMObjectStateEnum::STATE_LOADED, $country->_getStatus()); // This is failing
     }
 
+    public function testGetByIdLazyLoadFailsOnInheritance(): void
+    {
+        $this->expectException(TDBMCannotLazyLoadInheritanceException::class);
+        $this->expectExceptionMessage('Failed to lazy load the tables (person, contact, users) as they are part of inheritance.');
+        $userDao = new UserDao($this->tdbmService);
+        $userDao->getById(1, true);
+    }
+
     private function skipOracle(): void
     {
         if (self::getConnection()->getDatabasePlatform() instanceof OraclePlatform) {