Optimalization: changed entity retrieval

src/Models/AbstractModel.php

@@ -72,8 +72,37 @@ abstract class AbstractModel extends RedBean_SimpleModel
 
 	public static function getEntitiesWithCount($query, $perPage = null, $page = 1)
 	{
-		$entities = self::getEntities($query, $perPage, $page, true);
-		$count = self::getEntityCount($query);
+		$table = static::getTableName();
+		$tempTable = $table . '_temp';
+
+		R::begin();
+		R::exec('CREATE TEMPORARY TABLE ' . $tempTable . '(id INTEGER)');
+		R::exec('CREATE INDEX idx_fk_' . $tempTable . '_id ON ' . $tempTable . '(id)');
+
+		$dbQuery = R::$f->getNew()->begin();
+		$dbQuery->insertInto($tempTable . '(id)');
+		$dbQuery->select($table . '.id');
+		$builder = static::getQueryBuilder();
+		if ($builder)
+			$builder::build($dbQuery, $query);
+		else
+			$dbQuery->from($table);
+		$dbQuery->get();
+
+		$count = intval(R::getCell('SELECT COUNT(*) FROM ' . $tempTable));
+		$rows = R::$f->getNew()
+			->begin()
+			->select($table . '.*')
+			->from($tempTable)
+			->innerJoin($table)
+			->on($table . '.id = ' . $tempTable . '.id')
+			->limit('?')->put($perPage)
+			->offset('?')->put(($page - 1) * $perPage)
+			->get();
+
+		R::rollback();
+
+		$entities = self::convertRows($rows, $table, true);
 		return [$entities, $count];
 	}