Introduce Repository, Factory, Collection, Model base classes

src/BaseCollection.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Friendica;
+
+use Friendica\Database\Database;
+use Friendica\Database\DBA;
+use Psr\Log\LoggerInterface;
+
+/**
+ * The Collection classes inheriting from this abstract class are meant to represent a list of database record.
+ * The associated model class has to be provided in the child classes.
+ *
+ * Collections can be used with foreach(), accessed like an array and counted.
+ */
+abstract class BaseCollection extends \ArrayIterator
+{
+	/**
+	 * This property is used with paginated results to hold the total number of items satisfying the paginated request.
+	 * @var int
+	 */
+	protected $totalCount = 0;
+
+	/**
+	 * @param BaseModel[] $models
+	 * @param int|null    $totalCount
+	 */
+	public function __construct(array $models = [], int $totalCount = null)
+	{
+		parent::__construct($models);
+
+		$this->models = $models;
+		$this->totalCount = $totalCount ?? count($models);
+	}
+
+	/**
+	 * @return int
+	 */
+	public function getTotalCount()
+	{
+		return $this->totalCount;
+	}
+}