zendframework#186 Add SERIAL column type to support autoincrement -st…

…yle columns in PostgreSQL

src/Sql/Ddl/Column/Serial.php

@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * Zend Framework (http://framework.zend.com/).
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ *
+ * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Db\Sql\Ddl\Column;
+
+/**
+ * Column for PostgreSQL to automatically increment column.
+ *
+ * Similar to MySQL's autoincrement, but without performance issues.
+ * Used in conjunction with SequenceFeature.
+ */
+class Serial extends Column
+{
+    protected $type = 'SERIAL';
+}

test/Sql/Ddl/Column/SerialTest.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * Zend Framework (http://framework.zend.com/).
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ *
+ * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace ZendTest\Db\Sql\Ddl\Column;
+
+use Zend\Db\Sql\Ddl\Column\Serial;
+use Zend\Db\Sql\Ddl\Constraint\PrimaryKey;
+
+class SerialTest extends \PHPUnit_Framework_TestCase
+{
+    public function testGetExpressionData()
+    {
+        $column = new Serial('id');
+        $this->assertEquals(
+            [['%s %s NOT NULL', ['id', 'SERIAL'], [$column::TYPE_IDENTIFIER, $column::TYPE_LITERAL]]],
+            $column->getExpressionData()
+        );
+
+        $column = new Serial('id');
+        $column->addConstraint(new PrimaryKey());
+        $this->assertEquals(
+            [
+                ['%s %s NOT NULL', ['id', 'SERIAL'], [$column::TYPE_IDENTIFIER, $column::TYPE_LITERAL]],
+                ' ',
+                ['PRIMARY KEY', [], []],
+            ],
+            $column->getExpressionData()
+        );
+    }
+}