Summary of AIDA Data Providers

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This page summarises the existing AIDA data providers: where they are and what they're used for.

Summary of AIDA Data Providers

The following is a table of the source directories for active data providers in the Aida network, and associated data provider related code. See New Labout Cheatsheet for instructions on how to run the servers and test them.

Name	O/S	Lang	Source Directory	Purpose
Test	Unix AFS	Java	$AIDA/edu/stanford/slac/aida/dp/dpTest	The basic template data provider in java. It demonstrates returning structure aggregate data through AIDA's DaValue.
SlcDb	VMS	Java	On VMS in REF_AIDASHR. Started by warmslcx aida_dpslc /restart CORBA client side on AFS in $AIDA/edu/stanford/slac/aida/dp/dpSlc	Acquires SLC DB Data. On VMS CMS_AIDASHR contains the server side implementation files. AIDA.JAR conatins the client side and corba support files (identical on Unix and VMS).
SlcHist	VMS	Java	On VMS in REF_AIDASHR Started by warmslcx aida_dpslchist /restart CORBA client side on AFS in $AIDA/edu/stanford/slac/aida/dp/dpSlcHist	Acquires SLC History Data. On VMS CMS_AIDASHR contains the server side implementation files. AIDA.JAR conatins the client side and corba support files (identical on Unix and VMS).
SlcModel	VMS	Java	On VMS in REF_AIDASHR Started by warmslcx aida_dpslcmodel /restart CORBA client side on AFS in $AIDA/edu/stanford/slac/aida/dp/dpSlcModel	Acquires SLC Model Data: Twiss params, and R-matrices. On VMS CMS_AIDASHR contains the server side implementation files. AIDA.JAR conatins the client side and corba support files (identical on Unix and VMS).
Ca	Unix AFS	Java	$AIDA/edu/stanford/slac/aida/dp/dpCa	Acquires EPICS Channel Access Data.
CHADS	Unix AFS	C++	$AIDA/src/epics/extensions/src/dp/dpChads	Acquires EPICS Archiver Data. It also illustrates a c++ data provider returning aggregate data using an ad-hoc IDL structure (histData) through a CORBA Any, as opposed to using AIDA's DaValue. See `$AIDA/edu/stanford/slac/aida/dp/dpTestHist` below for the equivalent problem solved in java.

Additionally

The following are provided for programmers convenience, such as CORBA client side code and useful reference code.

Unix AFS	Java	$AIDA/edu/stanford/slac/aida/dp/dpChads	The Java client side of the dpChads data provider (see above). That is, this contains the Java package a client implemened in Java needs to use in order to get data from the C++ implemented server $AIDA/src/epics/extensions/src/dp/dpChads. Note that the CVS for this is no more than the `Makefile.sun4` and `idl/histData.idl` files, since CORBA idl compile generates the client side.
Unix AFS	Java	$AIDA/edu/stanford/slac/aida/dp/dpTestHist	Illustrates a Java data provider constructing and returning structured aggregate data (see get method) using an ad-hoc IDL defined structure, as opposed to using Aida's DaValue mechanism. Symmetrical to `$AIDA/src/epics/extensions/src/dp/dpChads` which demonstrates the same data provider problem in c++. This server is maintained in addition to dpChads as a speed reference.

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Author: Aida Team 23-Jan-2003
Modified by: 18-Nov-2004 Added SlcHist and SlcModel. 03-Feb-2005 Greg White, add Rmat to SlcModel