- First draft of current WIP

src/Ulmus.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Ulmus;
+
+use Generator;
+
+abstract class Ulmus
+{
+    public static string $repositoryClass = "\\Ulmus\\Repository";
+
+    public static string $queryBuilderClass = "\\Ulmus\\QueryBuilder";
+
+    public static ConnectionAdapter $defaultAdapter;
+
+    public static array $resolved = [];
+
+    protected static function fetchQueryBuilder(QueryBuilder $queryBuilder, ?ConnectionAdapter $adapter = null) : array
+    {
+        $sql = $queryBuilder->render();
+        return ( $adapter ?: static::$defaultAdapter )->pdo->select($sql, $queryBuilder->parameters ?? [])->fetchAll();
+    }
+
+    public static function iterateQueryBuilder(QueryBuilder $queryBuilder, ?ConnectionAdapter $adapter = null) : Generator
+    {
+        $sql = $queryBuilder->render();
+        $statement = ( $adapter ?: static::$defaultAdapter )->pdo->select($sql, $queryBuilder->parameters ?? []);
+
+        while ( $row = $statement->fetch() ) {
+            yield $row;
+        }
+
+        $statement->closeCursor();
+
+        return [
+            'count' => $statement->rowCount(),
+        ];
+    }
+
+    public static function resolveEntity(string $entityClass) : Common\EntityResolver
+    {
+        return static::$resolved[$entityClass] ?? static::$resolved[$entityClass] = new Common\EntityResolver($entityClass);
+    }
+
+    public static function repository(...$arguments) : Repository
+    {
+        return new static::$repositoryClass(...$arguments);
+    }
+
+    public static function queryBuilder(...$arguments) : QueryBuilder
+    {
+        return new static::$queryBuilderClass(...$arguments);
+    }
+}