From 7ec67517162cd3ca70381e194f91191d2eb329ce Mon Sep 17 00:00:00 2001
From: hyung-hwan <hyunghwan.chung@gmail.com>
Date: Sun, 5 Sep 2021 15:42:11 +0000
Subject: [PATCH] refactored the sqlite databse hack for foreign keys support

---
 codepot/src/system/database/DB_driver.php         | 15 ++++++++++++++-
 .../system/database/drivers/oci8/oci8_driver.php  |  7 +++++++
 .../system/database/drivers/pdo/pdo_driver.php    | 11 +++++++++++
 .../database/drivers/sqlite/sqlite_driver.php     |  9 ++++++++-
 4 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/codepot/src/system/database/DB_driver.php b/codepot/src/system/database/DB_driver.php
index a9b0a643..96907786 100644
--- a/codepot/src/system/database/DB_driver.php
+++ b/codepot/src/system/database/DB_driver.php
@@ -150,7 +150,9 @@ class CI_DB_driver {
 					return FALSE;
 				}
 
-				return TRUE;
+				// HYUNG-HWAN
+				//return TRUE;
+				// END HYUNG-HWAN
 			}
 		}
 
@@ -161,9 +163,20 @@ class CI_DB_driver {
 			$this->_execute('PRAGMA foreign_keys=ON');
 		}
 
+		// HYUNG-HWAN
+		$this->db_post_initialize ();
+		// END HYUNG-HWAN
+
 		return TRUE;
 	}
 
+	// HYUNG-HWAN
+	function db_post_initialize ()
+	{
+		return TRUE;
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**
diff --git a/codepot/src/system/database/drivers/oci8/oci8_driver.php b/codepot/src/system/database/drivers/oci8/oci8_driver.php
index 0728a779..73bcce0f 100644
--- a/codepot/src/system/database/drivers/oci8/oci8_driver.php
+++ b/codepot/src/system/database/drivers/oci8/oci8_driver.php
@@ -141,6 +141,13 @@ class CI_DB_oci8_driver extends CI_DB {
 		return TRUE;
 	}
 
+	// HYUNG-HWAN
+	function db_post_initialize ()
+	{
+		$this->query ("ALTER SESSION SET NLS_TIMESTAMP_FORMAT='YYYY-MM-DD HH24:MI:SS.FF'");
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**
diff --git a/codepot/src/system/database/drivers/pdo/pdo_driver.php b/codepot/src/system/database/drivers/pdo/pdo_driver.php
index cebea198..29b2cd01 100644
--- a/codepot/src/system/database/drivers/pdo/pdo_driver.php
+++ b/codepot/src/system/database/drivers/pdo/pdo_driver.php
@@ -237,6 +237,17 @@ class CI_DB_pdo_driver extends CI_DB {
 		return TRUE;
 	}
 
+
+	// HYUNG-HWAN - hack to enable foreign keys support in sqlite
+	function db_post_initialize ()
+	{
+		if (preg_match("/^sqlite/", $this->hostname))
+		{
+			$this->_execute('PRAGMA foreign_keys=ON');
+		}
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**
diff --git a/codepot/src/system/database/drivers/sqlite/sqlite_driver.php b/codepot/src/system/database/drivers/sqlite/sqlite_driver.php
index 26230138..bc259dfa 100644
--- a/codepot/src/system/database/drivers/sqlite/sqlite_driver.php
+++ b/codepot/src/system/database/drivers/sqlite/sqlite_driver.php
@@ -143,6 +143,13 @@ class CI_DB_sqlite_driver extends CI_DB {
 		return TRUE;
 	}
 
+	// HYUNG-HWAN - hack to enable foreign keys support in sqlite
+	function db_post_initialize ()
+	{
+		$this->_execute('PRAGMA foreign_keys=ON');
+	}
+	// END HYUNG-HWAN
+
 	// --------------------------------------------------------------------
 
 	/**
@@ -656,4 +663,4 @@ class CI_DB_sqlite_driver extends CI_DB {
 
 
 /* End of file sqlite_driver.php */
-/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */