- A lot of work done on bug fixing. Added a new SQLite adapter

src/Adapter/DefaultAdapterTrait.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace Ulmus\Adapter;
+
+use Ulmus\{Entity\InformationSchema\Table, Migration\FieldDefinition, Repository, QueryBuilder};
+
+trait DefaultAdapterTrait
+{
+    public function repositoryClass() : string
+    {
+        return Repository::class;
+    }
+
+    public function queryBuilderClass() : string
+    {
+        return QueryBuilder::class;
+    }
+
+    public function tableSyntax() : array
+    {
+        return [
+            'ai' => "AUTO_INCREMENT",
+            'pk' => "PRIMARY KEY",
+            'unsigned' => "UNSIGNED",
+        ];
+    }
+
+    public function databaseName() : string
+    {
+        return $this->database;
+    }
+
+    public function schemaTable(string $databaseName, string $tableName) /* : ? object */
+    {
+        return Table::repository()->where(Table::field('schema'), $databaseName)->loadOneFromField(Table::field('name'), $tableName);
+    }
+
+    public function mapFieldType(FieldDefinition $field, bool $typeOnly = false) : string
+    {
+        $type = $field->type;
+
+        $length = $field->length;
+
+        if ( is_a($type, Entity\Field\Date::class, true) ) {
+            $type = "DATE";
+        }
+        elseif ( is_a($type, Entity\Field\Time::class, true) ) {
+            $type = "TIME";
+        }
+        elseif ( is_a($type, \DateTime::class, true) ) {
+            $type = "DATETIME";
+        }
+
+        switch($type) {
+            case "bool":
+                $type = "TINYINT";
+                $length = 1;
+                break;
+
+            case "array":
+            case "string":
+                if ($length && $length <= 255) {
+                    $type = "VARCHAR";
+                    break;
+                }
+                elseif (! $length || ( $length <= 65535 ) ) {
+                    $type = "TEXT";
+                }
+                elseif ( $length <= 16777215 ) {
+                    $type = "MEDIUMTEXT";
+                }
+                elseif ($length <= 4294967295) {
+                    $type = "LONGTEXT";
+                }
+                else {
+                    throw new \Exception("A column with size bigger than 4GB cannot be created.");
+                }
+
+                # Length is unnecessary on TEXT fields
+                unset($length);
+
+                break;
+
+            case "float":
+                $type = "DOUBLE";
+                break;
+
+            default:
+                $type = strtoupper($type);
+                break;
+        }
+
+        return $typeOnly ? $type : $type . ( $length ? "($length" . ( $precision ? ",$precision" : "" ) . ")" : "" );
+    }
+}