Change components to joined inheritance type

Author: silverbackdan

src/Resources/config/doctrine-orm/Core.AbstractComponent.orm.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping https://www.doctrine-project.org/schemas/orm/doctrine-mapping.xsd">
-    <entity name="Silverback\ApiComponentsBundle\Entity\Core\AbstractComponent" table="abstract_component" inheritance-type="SINGLE_TABLE">
+    <entity name="Silverback\ApiComponentsBundle\Entity\Core\AbstractComponent" table="abstract_component" inheritance-type="JOINED">
         <discriminator-column name="dtype" type="string" length="255"/>
         <id name="id" column="id" type="uuid">
             <generator strategy="CUSTOM"/>