MySQL Connector was not available at runtime

pom.xml

@@ -64,6 +64,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
+            <scope>runtime</scope>
         </dependency>
         <dependency>
             <groupId>com.h2database</groupId>

src/main/java/de/nclazz/service/mailrelay/domain/Account.java

@@ -17,7 +17,6 @@ import javax.persistence.FetchType;
 import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 import javax.persistence.Index;
-import javax.persistence.JoinColumn;
 import javax.persistence.OneToMany;
 import javax.persistence.Table;
 import java.util.ArrayList;
@@ -51,7 +50,6 @@ public class Account {
 
     @JsonIgnore
     @OneToMany
-    @JoinColumn(name = "message_guid", referencedColumnName = "guid")
     private final List<Message> sentMessages = new ArrayList<>();
 
     public static Account of(@NonNull String name, @NonNull List<String> receivers) {

src/main/resources/db/changelogs/01-create-initial-schema.xml

@@ -2,7 +2,7 @@
 <databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
                    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                    xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.1.xsd">
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-1">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-1">
         <createTable tableName="accounts">
             <column name="guid" type="CHAR(36)">
                 <constraints nullable="false" primaryKey="true" primaryKeyName="accountsPK"/>
@@ -11,7 +11,7 @@
             <column name="token" type="VARCHAR(16)"/>
         </createTable>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-2">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-2">
         <createTable tableName="accounts_receivers">
             <column name="account_guid" type="CHAR(36)">
                 <constraints nullable="false"/>
@@ -19,20 +19,29 @@
             <column name="receivers" type="VARCHAR(255)"/>
         </createTable>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-3">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-3">
+        <createTable tableName="accounts_sent_messages">
+            <column name="account_guid" type="CHAR(36)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="sent_messages_guid" type="CHAR(36)">
+                <constraints nullable="false"/>
+            </column>
+        </createTable>
+    </changeSet>
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-4">
         <createTable tableName="messages">
             <column name="guid" type="CHAR(36)">
                 <constraints nullable="false" primaryKey="true" primaryKeyName="messagesPK"/>
             </column>
+            <column name="account_guid" type="CHAR(36)"/>
+            <column name="subject" type="VARCHAR(255)"/>
             <column name="content" type="CLOB"/>
             <column name="from_address" type="VARCHAR(255)"/>
-            <column name="subject" type="VARCHAR(255)"/>
             <column name="created_at" type="TIMESTAMP"/>
-            <column name="account_guid" type="CHAR(36)"/>
-            <column name="message_guid" type="CHAR(36)"/>
         </createTable>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-4">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-5">
         <createTable tableName="messages_receivers">
             <column name="message_guid" type="CHAR(36)">
                 <constraints nullable="false"/>
@@ -40,21 +49,27 @@
             <column name="receivers" type="VARCHAR(255)"/>
         </createTable>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-5">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-6">
+        <addUniqueConstraint columnNames="sent_messages_guid" constraintName="UK_p8yctc0geuhssv7ghdsq6rhmu" tableName="accounts_sent_messages"/>
+    </changeSet>
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-7">
         <createIndex indexName="IDX8yxeow0t327h4pp39wl7lnali" tableName="accounts">
             <column name="token"/>
         </createIndex>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-6">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-8">
         <addForeignKeyConstraint baseColumnNames="message_guid" baseTableName="messages_receivers" constraintName="FK9vooi7dir04p8we6gides1jdy" deferrable="false" initiallyDeferred="false" referencedColumnNames="guid" referencedTableName="messages" validate="true"/>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-7">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-9">
         <addForeignKeyConstraint baseColumnNames="account_guid" baseTableName="accounts_receivers" constraintName="FKamxf2r0aqd1xkuumikjpeostp" deferrable="false" initiallyDeferred="false" referencedColumnNames="guid" referencedTableName="accounts" validate="true"/>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-8">
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-10">
         <addForeignKeyConstraint baseColumnNames="account_guid" baseTableName="messages" constraintName="FKasa6p4yvkebuk2u1nrwfm0lv2" deferrable="false" initiallyDeferred="false" referencedColumnNames="guid" referencedTableName="accounts" validate="true"/>
     </changeSet>
-    <changeSet author="Niclas Thobaben (generated)" id="1644943728247-9">
-        <addForeignKeyConstraint baseColumnNames="message_guid" baseTableName="messages" constraintName="FKih9hqr479lv79cxjf1r5heo6l" deferrable="false" initiallyDeferred="false" referencedColumnNames="guid" referencedTableName="accounts" validate="true"/>
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-11">
+        <addForeignKeyConstraint baseColumnNames="sent_messages_guid" baseTableName="accounts_sent_messages" constraintName="FKnd7gj59ljxgt338iijbdu3p22" deferrable="false" initiallyDeferred="false" referencedColumnNames="guid" referencedTableName="messages" validate="true"/>
+    </changeSet>
+    <changeSet author="NiclasThobabenDev (generated)" id="1644944964284-12">
+        <addForeignKeyConstraint baseColumnNames="account_guid" baseTableName="accounts_sent_messages" constraintName="FKoxyn335xryw98elniqfjyqko5" deferrable="false" initiallyDeferred="false" referencedColumnNames="guid" referencedTableName="accounts" validate="true"/>
     </changeSet>
 </databaseChangeLog>