init

2026-05-12 21:10:38 +02:00
commit ab96d82fcf
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+<?php
+declare(strict_types=1);
+
+/**
+ * CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
+ * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
+ *
+ * Licensed under The MIT License
+ * For full copyright and license information, please see the LICENSE.txt
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @copyright     Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
+ * @link          https://cakephp.org CakePHP(tm) Project
+ * @since         3.9.0
+ * @license       https://www.opensource.org/licenses/mit-license.php MIT License
+ */
+namespace Cake\Datasource\Paging;
+
+use Cake\Datasource\QueryInterface;
+use Cake\Datasource\ResultSetInterface;
+
+/**
+ * Simplified paginator which avoids potentially expensive queries
+ * to get the total count of records.
+ *
+ * When using a simple paginator you will not be able to generate page numbers.
+ * Instead use only the prev/next pagination controls.
+ */
+class SimplePaginator extends NumericPaginator
+{
+    /**
+     * Get paginated items.
+     *
+     * Get one additional record than the limit. This helps deduce if next page exits.
+     *
+     * @param \Cake\Datasource\QueryInterface $query Query to fetch items.
+     * @param array $data Paging data.
+     * @return \Cake\Datasource\ResultSetInterface
+     */
+    protected function getItems(QueryInterface $query, array $data): ResultSetInterface
+    {
+        return $query->limit($data['options']['limit'] + 1)->all();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function buildParams(array $data): array
+    {
+        $hasNextPage = false;
+        if ($this->pagingParams['count'] > $data['options']['limit']) {
+            $hasNextPage = true;
+            $this->pagingParams['count'] -= 1;
+        }
+
+        parent::buildParams($data);
+
+        $this->pagingParams['hasNextPage'] = $hasNextPage;
+
+        return $this->pagingParams;
+    }
+
+    /**
+     * Build paginated result set.
+     *
+     * Since the query fetches an extra record, drop the last record if records
+     * fetched exceeds the limit/per page.
+     *
+     * @param \Cake\Datasource\ResultSetInterface $items
+     * @param array $pagingParams
+     * @return \Cake\Datasource\Paging\PaginatedInterface
+     */
+    protected function buildPaginated(ResultSetInterface $items, array $pagingParams): PaginatedInterface
+    {
+        if (count($items) > $this->pagingParams['perPage']) {
+            $items = $items->take($this->pagingParams['perPage']);
+        }
+
+        return new PaginatedResultSet($items, $pagingParams);
+    }
+
+    /**
+     * Simple pagination does not perform any count query, so this method returns `null`.
+     *
+     * @param \Cake\Datasource\QueryInterface $query Query instance.
+     * @param array $data Pagination data.
+     * @return int|null
+     */
+    protected function getCount(QueryInterface $query, array $data): ?int
+    {
+        return null;
+    }
+}