Namespace and ClassPath rewrites

Core/Driver/SQL/Constraint/Constraint.class.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Core\Driver\SQL\Constraint;
+
+abstract class Constraint {
+
+  private array $columnNames;
+  private ?string $name;
+
+  public function __construct($columnNames, ?string $constraintName = NULL) {
+    $this->columnNames = (!is_array($columnNames) ? array($columnNames) : $columnNames);
+    $this->name = $constraintName;
+  }
+
+  public function getColumnNames(): array { return $this->columnNames; }
+  public function getName(): ?string { return $this->name; }
+  public function setName(string $name) { $this->name = $name; }
+}

Core/Driver/SQL/Constraint/ForeignKey.class.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Core\Driver\SQL\Constraint;
+
+use Core\Driver\SQL\Strategy\Strategy;
+
+class ForeignKey extends Constraint {
+
+  private string $referencedTable;
+  private string $referencedColumn;
+  private ?Strategy $strategy;
+
+  public function __construct(string $columnName, string $refTable, string $refColumn, ?Strategy $strategy = NULL) {
+    parent::__construct($columnName);
+    $this->referencedTable = $refTable;
+    $this->referencedColumn = $refColumn;
+    $this->strategy = $strategy;
+  }
+
+  public function getReferencedTable(): string { return $this->referencedTable; }
+  public function getReferencedColumn(): string { return $this->referencedColumn; }
+  public function onDelete(): ?Strategy { return $this->strategy; }
+}

Core/Driver/SQL/Constraint/PrimaryKey.class.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Core\Driver\SQL\Constraint;
+
+class PrimaryKey extends Constraint {
+
+  public function __construct(...$names) {
+    parent::__construct((!empty($names) && is_array($names[0])) ? $names[0] : $names);
+  }
+
+}

Core/Driver/SQL/Constraint/Unique.class.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Core\Driver\SQL\Constraint;
+
+class Unique extends Constraint {
+
+  public function __construct(...$names) {
+    parent::__construct((!empty($names) && is_array($names[0])) ? $names[0] : $names);
+  }
+
+}