support multiple invoice repositories (#1084)

src/Invoice/InvoiceItemInterface.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Invoice;
+
+use App\Entity\Activity;
+use App\Entity\MetaTableTypeInterface;
+use App\Entity\Project;
+use App\Entity\User;
+
+interface InvoiceItemInterface
+{
+    public function getActivity(): ?Activity;
+
+    public function getProject(): ?Project;
+
+    public function getFixedRate(): ?float;
+
+    public function getHourlyRate(): ?float;
+
+    public function getRate(): float;
+
+    public function getUser(): ?User;
+
+    public function getBegin(): ?\DateTime;
+
+    public function getEnd(): ?\DateTime;
+
+    public function getDuration(): int;
+
+    public function getDescription(): ?string;
+
+    /**
+     * @return MetaTableTypeInterface[]
+     */
+    public function getVisibleMetaFields(): array;
+}