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application/Espo/ORM/Query/Part/OrderList.php

@@ -0,0 +1,96 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\ORM\Query\Part;
+
+use InvalidArgumentException;
+use Iterator;
+
+/**
+ * A list of order items.
+ *
+ * Immutable.
+ *
+ * @implements Iterator<Order>
+ */
+class OrderList implements Iterator
+{
+    private int $position = 0;
+    /** @var Order[] */
+    private array $list;
+
+    /**
+     * @param Order[] $list
+     */
+    private function __construct(array $list)
+    {
+        foreach ($list as $item) {
+            if (!$item instanceof Order) {
+                throw new InvalidArgumentException();
+            }
+        }
+
+        $this->list = $list;
+    }
+
+    /**
+     * Create an instance.
+     *
+     * @param Order[] $list
+     */
+    public static function create(array $list): self
+    {
+        return new self($list);
+    }
+
+    public function rewind(): void
+    {
+        $this->position = 0;
+    }
+
+    public function current(): Order
+    {
+        return $this->list[$this->position];
+    }
+
+    public function key(): int
+    {
+        return $this->position;
+    }
+
+    public function next(): void
+    {
+        ++$this->position;
+    }
+
+    public function valid(): bool
+    {
+        return isset($this->list[$this->position]);
+    }
+}