From baf1e5edca626368154ec9e6e9b1ff9e39276f07 Mon Sep 17 00:00:00 2001
From: "godzilla80@gmx.net" <>
Date: Mon, 8 Feb 2010 08:44:21 +0000
Subject: ENH: Modify TDbTableInfo::getColumnNames() to store result in private
 class member

---
 HISTORY                                |  1 +
 framework/Data/Common/TDbTableInfo.php | 24 ++++++++++++++++--------
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/HISTORY b/HISTORY
index 8754d41b..95db4e0a 100644
--- a/HISTORY
+++ b/HISTORY
@@ -24,6 +24,7 @@ ENH: Add property ClientScriptManagerClass to TPageService and releated changes
 ENH: Always render clientside counterparts of validation control even if not enabled, but pass-through Enabled property, to allow Enabled/Disable of validator on callback. (Yves)
 EHN: Add property TValidationSummary.ScrollToSummary to server-side control since property exists on client-side. (Yves)
 EHN: Add property TransactionClass (defaults to System.Data.TDbTransaction) to TDbConnection and modify beginTransaction() (Yves)
+ENH: Modify TDbTableInfo::getColumnNames() to store result in private class member (Yves)
 ENH: Issue#215 - Add ClientSide property to TDropContainer (googlenew at pcforum.hu, Christophe)
 CHG: Issue#218 - Change URL of Javascript Logger (Christophe)
 
diff --git a/framework/Data/Common/TDbTableInfo.php b/framework/Data/Common/TDbTableInfo.php
index e2aae3d0..455dbc33 100644
--- a/framework/Data/Common/TDbTableInfo.php
+++ b/framework/Data/Common/TDbTableInfo.php
@@ -27,7 +27,13 @@ class TDbTableInfo extends TComponent
 
 	private $_columns;
 
-	private $_lowercase;
+	private $_lowercase;
+
+	/**
+	 * @var null|array
+	 * @since 3.1.7
+	 */
+	private $_names = null;
 
 	/**
 	 * Sets the database table meta data information.
@@ -118,11 +124,14 @@ class TDbTableInfo extends TComponent
 	 * @return array table column names (identifier quoted)
 	 */
 	public function getColumnNames()
-	{
-		$names=array();
-		foreach($this->getColumns() as $column)
-			$names[] = $column->getColumnName();
-		return $names;
+	{
+		if($this->_names===null)
+		{
+			$this->_names=array();
+			foreach($this->getColumns() as $column)
+				$this->_names[] = $column->getColumnName();
+		}
+		return $this->_names;
 	}
 
 	/**
@@ -154,5 +163,4 @@ class TDbTableInfo extends TComponent
 		}
 		return $this->_lowercase;
 	}
-}
-
+}
\ No newline at end of file
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