Add ProvideDbalConnection interface

src/Store/Dbal/ProvideDbalConnection.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Patchlevel\EventSourcing\Store\Dbal;
+
+use Doctrine\DBAL\Connection;
+
+interface ProvideDbalConnection
+{
+    public function connection(): Connection;
+}

src/Store/StreamDoctrineDbalStore.php

@@ -38,6 +38,7 @@
 use Patchlevel\EventSourcing\Store\Criteria\StreamCriterion;
 use Patchlevel\EventSourcing\Store\Criteria\ToIndexCriterion;
 use Patchlevel\EventSourcing\Store\Criteria\ToPlayheadCriterion;
+use Patchlevel\EventSourcing\Store\Dbal\ProvideDbalConnection;
 use Patchlevel\EventSourcing\Store\Header\EventIdHeader;
 use Patchlevel\EventSourcing\Store\Header\IndexHeader;
 use Patchlevel\EventSourcing\Store\Header\PlayheadHeader;
@@ -66,7 +67,7 @@
 
 use const PHP_VERSION_ID;
 
-final class StreamDoctrineDbalStore implements Store, SubscriptionStore, DoctrineSchemaConfigurator
+final class StreamDoctrineDbalStore implements Store, SubscriptionStore, DoctrineSchemaConfigurator, ProvideDbalConnection
 {
     /**
      * PostgreSQL has a limit of 65535 parameters in a single query.

src/Store/TaggableDoctrineDbalStore.php

@@ -41,6 +41,7 @@
 use Patchlevel\EventSourcing\Store\Criteria\TagCriterion;
 use Patchlevel\EventSourcing\Store\Criteria\ToIndexCriterion;
 use Patchlevel\EventSourcing\Store\Criteria\ToPlayheadCriterion;
+use Patchlevel\EventSourcing\Store\Dbal\ProvideDbalConnection;
 use Patchlevel\EventSourcing\Store\Header\EventIdHeader;
 use Patchlevel\EventSourcing\Store\Header\IndexHeader;
 use Patchlevel\EventSourcing\Store\Header\PlayheadHeader;
@@ -76,7 +77,7 @@
 use const PHP_VERSION_ID;
 
 /** @experimental */
-final class TaggableDoctrineDbalStore implements Store, AppendStore, SubscriptionStore, DoctrineSchemaConfigurator
+final class TaggableDoctrineDbalStore implements Store, AppendStore, SubscriptionStore, DoctrineSchemaConfigurator, ProvideDbalConnection
 {
     /**
      * PostgreSQL has a limit of 65535 parameters in a single query.