File:	libdata_changelog.txt
Title:	LibData Change Log
Author:	Paul F. Bramscher brams006@umn.edu
Date:	July 20, 2004


==============================================================================
CHANGELOG
==============================================================================

To download available versions (and utilize bug tracking and discussion
forum facilities) please refer to the LibData project page on SourceForge:
http://sourceforge.net/projects/libdata/

LibData2.10 / July 20, 2004
===========================
		LibData 2.1 fixes a couple of small bugs discovered in page.phtml
		and page_print.phtml.  The page_id is now explicitly typecast to
		the integer type to guard against possible errors.
		
		A major enhancement, with code alterations cascading into many files,
		is the ability to add CourseLib/PageScribe pages as elements on other
		CLPS pages.  This required numerous modifications in scribe forms,
		application and transaction files -- as well as some new
		administrative search functionality and statistics tracking.  The
		code alterations are too numerous to detail line-by-line here, but
		major affected routines include the copy/paste, page cloning, and
		page rendering logic.  They were modified to accomodate the new field.
		
		This also required modifying the libdata.element, libdata.pastebuffer
		and libstats.elementstats tables with the introduction of a new
		database field: element_page_id mediumint(9).  This element refers
		to any elements which are CLPS page id's.  This is not to be
		confused with element.page_id, which is the page on which the
		element occurs (whether or not the destination is another CLPS page).


LibData2.0 / March 16, 2004
===========================
		LibData 2.0 represents a significant break from 1.x, so
		a new major release number (2.0) was chosen.

		This version introduces some database changes, namely the
		introduction of the vendor table, and utilization of the
		resource.vendor_id field.  This allows resources to be associated
		with a vendor.  Either at the vendor level (affecting all
		associated resources) or at the individual resource level, a
		status flag can be configured as up (default), down, or alert.
		On any RQS, or CL/PS page on which the resource appears, the down
		or alert message is prominently displayed.
		
		Another sweeping set of changes involved the passing around of
		the $con (mySQL resource link/connection identifier) variable.
		This was not needed, and has been removed from all function
		calls.  In addition to this change, most or all mysql_query()
		functions have been replaced with a thin wrapper around it
		(located in db_connect.php) called mysql_tryquery().  This function
		allows centralized error trapping and reporting for any SQL string
		passed into the function.
		
		Standardization of the drawing of many forms in the administrative
		portion of LibData.  Forms which involve the adding, editing, and
		deleting of setup tables are now generally routed through a pair of
		new (and simple) functions in app_controls.php: msgTableOpen() and
		msgTableClose().  The purpose of this function pair is to open an
		HTML box utilizing LibData CSS definitions, and create a header row.
		All subsequent text is then output within the box, until the corresponding
		msgTableClose() is called to close up the table.
		
		Several security enhancements.

	
LibData1.04 / January 27, 2004
==============================
		This release fixes a bug (refer to bug tracker for details) in the
		public rqs.phtml file. It also introduces a couple minor enhancements
		(administrative search for resources by call number and feature) as
		well as a new database field for PageScribe pages: pageheader. This field
		is available for edit only on PageScribe (not CourseLib), and allows for 
		the inclusion of descriptive text or HTML between the page title and
		Table of Contents. (Note that CourseLib already has descriptive-type
		fields pertinent to courses).


LibData1.03 / January 14, 2004
==============================
		Fixed a minor bug in app_controls.php recordCount() which causes strings
		with single-quotes to fail during SELECT.
		
		Also introduces new functionality to PageScribe/CourseLib: the wrapping
		of the Table of Contents at the calculated midsection into two-column
		format. This can be useful for pages which have many root-level elements,
		a long ToC, and wasted horizontal screen real estate.


LibData1.02 / December 04, 2003
===============================
		Fixed a minor bug discovered in accessClass.php. Please refer to the bug
		tracker (browse the closed ticket items) for details.


LibData1.01 / November 30, 2003
===============================
		The first open source GPL release of LibData.
	


July 20, 2004
Paul F. Bramscher
brams006@umn.edu
University of Minnesota Libraries