Database abstraction

core/Driver/SQL/Constraint/Constraint.class.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Driver\SQL\Constraint;
+
+abstract class Constraint {
+
+  private $columnName;
+
+  public function __construct($columnName) {
+    $this->columnName = $columnName;
+  }
+
+  public function getColumnName() { return $this->columnName; }
+};
+
+?>

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

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+<?php
+
+namespace Driver\SQL\Constraint;
+
+class ForeignKey extends Constraint {
+
+  private $referencedTable;
+  private $referencedColumn;
+  private $strategy;
+
+  public function __construct($name, $refTable, $refColumn, $strategy = NULL) {
+    parent::__construct($name);
+    $this->referencedTable = $refTable;
+    $this->referencedColumn = $refColumn;
+    $this->strategy = $strategy;
+  }
+
+  public function getReferencedTable() { return $this->referencedTable; }
+  public function getReferencedColumn() { return $this->referencedColumn; }
+  public function onDelete() { return $this->strategy; }
+};
+
+?>

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

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+<?php
+
+namespace 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

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