> Documentation for writing midas history data to SQL (mysql) is now documented in midas doxygen files
> (make dox; firefox doxfiles/html/index.html). The corresponding logger and mhttpd code has been
> committed for some time now and it is used in production environment by the t2k/nd280 slow controls
> daq system at TRIUMF.
> svn rev 4487
An updated version of the SQL history code is now committed to midas svn.
The new code is in history_sql.cxx. It implements a C++ interface to the MIDAS history (history.h),
and improves on the old code history_odbc.cxx by adding:
- an index table for remembering MIDAS names of SQL tables and columns (our midas users like to use funny characters in history
names that are not permitted in SQL table and column names),
- caching of database schema (event names, etc) with a noticeable speedup of mhttpd (there is a new button on the history panel editor
"clear history cache" to make mhttpd reload the database schema.
The updated documentation for using SQL history is committed to midas svn doxfiles/internal.dox (svn up; make dox; firefox
doxfiles/html/index.html), or see my copy on the web at
svn rev 4595