- Some overdue modification made to allow more flexibility

src/Adapter/SqlAdapterTrait.php

@@ -0,0 +1,151 @@
+<?php
+
+namespace Ulmus\Adapter;
+
+use Ulmus\{Common\Sql,
+    ConnectionAdapter,
+    Entity\InformationSchema\Table,
+    Migration\FieldDefinition,
+    Repository,
+    QueryBuilder,
+    Ulmus};
+
+trait SqlAdapterTrait
+{
+    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(ConnectionAdapter $adapter, $databaseName, string $tableName) : null|object
+    {
+        return Table::repository(Repository::DEFAULT_ALIAS, $adapter)
+            ->select(\Ulmus\Common\Sql::raw('this.*'))
+            ->where($this->escapeIdentifier('table_schema', AdapterInterface::IDENTIFIER_FIELD), $databaseName)
+            ->loadOneFromField($this->escapeIdentifier('table_name', AdapterInterface::IDENTIFIER_FIELD), $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 : $type . ( isset($length) ? "($length" . ( ! empty($precision) ? ",$precision" : "" ) . ")" : "" );
+    }
+
+    public function whitelistAttributes(array &$parameters) : void
+    {
+        $parameters = array_intersect_key($parameters, array_flip(static::ALLOWED_ATTRIBUTES));
+    }
+
+    public function generateAlterColumn(FieldDefinition $definition, array $field) : string|\Stringable
+    {
+        if (! empty($field['previous']) ) {
+            $position = sprintf('AFTER %s', $this->escapeIdentifier($field['previous']->field, AdapterInterface::IDENTIFIER_FIELD));
+        }
+        else {
+            $position = "FIRST";
+        }
+
+        return implode(" ", [
+            strtoupper($field['action']),
+            $this->escapeIdentifier($definition->getSqlName(), AdapterInterface::IDENTIFIER_FIELD),
+            $definition->getSqlType(),
+            $definition->getSqlParams(),
+            $position,
+        ]);
+    }
+
+    public function writableValue(mixed  $value) : mixed
+    {
+        switch (true) {
+            case $value instanceof \UnitEnum:
+                return Ulmus::convertEnum($value);
+
+            case is_object($value):
+                return Ulmus::convertObject($value);
+
+                case is_array($value):
+                return json_encode($value);
+
+            case is_bool($value):
+                return (int) $value;
+        }
+
+        return $value;
+    }
+    
+    public function splitAlterQuery() : bool
+    {
+        return false;
+    }
+}