From a8b3ebe8f62c3888b216d827c1c5dcba8a47d4e1 Mon Sep 17 00:00:00 2001
From: wei <>
Date: Sun, 26 Nov 2006 22:15:58 +0000
Subject: Adding active record implementation.

---
 .../ActiveRecord/Vendor/TDbMetaDataInspector.php   | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 framework/Data/ActiveRecord/Vendor/TDbMetaDataInspector.php

(limited to 'framework/Data/ActiveRecord/Vendor/TDbMetaDataInspector.php')

diff --git a/framework/Data/ActiveRecord/Vendor/TDbMetaDataInspector.php b/framework/Data/ActiveRecord/Vendor/TDbMetaDataInspector.php
new file mode 100644
index 00000000..ee7f339e
--- /dev/null
+++ b/framework/Data/ActiveRecord/Vendor/TDbMetaDataInspector.php
@@ -0,0 +1,79 @@
+<?php
+/**
+ * TDbMetaDataInspector class file.
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @version $Id$
+ * @package System.Data.ActiveRecord.Vendor
+ */
+
+/**
+ * Base class for database meta data inspectors.
+ *
+ * @author Wei Zhuo <weizho[at]gmail[dot]com>
+ * @version $Id$
+ * @package System.Data.ActiveRecord.Vendor
+ * @since 3.1
+ */
+abstract class TDbMetaDataInspector
+{
+	private $_connection;
+
+	public function __construct($conn)
+	{
+		$this->setDbConnection($conn);
+	}
+
+	/**
+	 * @param TDbConnection database connection.
+	 */
+	public function setDbConnection($conn)
+	{
+		$this->_connection=$conn;
+	}
+
+	/**
+	 * @return TDbConnection database connection.
+	 */
+	public function getDbConnection()
+	{
+		return $this->_connection;
+	}
+
+	/**
+	 * @param string table name
+	 * @return TDbMetaData table meta data.
+	 */
+	public function getTableMetaData($table)
+	{
+		$keys = $this->getConstraintKeys($table);
+		$columns = $this->getColumnDefinitions($table);
+		return $this->createMetaData($table,$columns,$keys['primary'], $keys['foreign']);
+	}
+
+	/**
+	 * Get the column definitions for given table.
+	 * @param string table name.
+	 * @return array column name value pairs of column meta data.
+	 */
+	abstract protected function getColumnDefinitions($table);
+
+	/**
+	 * Gets the primary and foreign key details for the given table.
+	 * @param string table name.
+	 * @return array key value pairs with keys 'primary' and 'foreign'.
+	 */
+	abstract protected function getConstraintKeys($table);
+
+	/**
+	 * Create a new instance of meta data.
+	 * @param string table name
+	 * @param array column meta data
+	 * @param array primary key meta data
+	 * @param array foreign key meta data.
+	 * @return TDbMetaData table meta data.
+	 */
+	abstract protected function createMetaData($table, $columns, $primary, $foreign);
+}
+
+?>
\ No newline at end of file
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