Namespace and ClassPath rewrites

Core/Driver/SQL/RowIterator.class.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Core\Driver\SQL;
+
+abstract class RowIterator implements \Iterator {
+
+  protected $resultSet;
+  protected int $rowIndex;
+  protected array $fetchedRows;
+  protected int $numRows;
+  protected bool $useCache;
+
+  public function __construct($resultSet, bool $useCache = false) {
+    $this->resultSet = $resultSet;
+    $this->fetchedRows = [];
+    $this->rowIndex = 0;
+    $this->numRows = $this->getNumRows();
+    $this->useCache = $useCache;
+  }
+
+  protected abstract function getNumRows(): int;
+  protected abstract function fetchRow(int $index): array;
+
+  public function current() {
+    return $this->fetchRow($this->rowIndex);
+  }
+
+  public function next() {
+    $this->rowIndex++;
+  }
+
+  public function key() {
+    return $this->rowIndex;
+  }
+
+  public function valid(): bool {
+    return $this->rowIndex < $this->numRows;
+  }
+}