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NAME:
       Data Access SOM Stock Sample

FEATURES/CONCEPTS:
       This sample illustrates how to use the Data Access Builder Class Library
       and the code generated by the Data Access Builder Tool to access an ODBC
       database table in a SOM C++ program. It shows how to connect to a
       database, manipulate data, make transactions, and disconnect from a
       database.  It also shows how users can build their own customized classes
       derived from the Data Access Builder Classes.  This sample also
       illustrates the use of multiple connections to a datastore.

TASK:
       A simple SOM C++ program that updates stock inventory and received-order
       information that are kept in two ODBC database tables and generates a
       price list from the data.

DESCRIPTION:
       This sample program generates a price list from the initial data. It
       then adds more rows to the inventory and receivedorder tables,
       calculates the new values and updates the tables. It then generates an
       updated price list.

SOURCE FILE LOCATION:

       X:\ibmcppw\samples\database\stocksom

       where 'X:' is the drive you installed the samples and document component
       of VisualAge for C++.


NOTE:  By default, this examples works with a supplied DBASE ODBC database.
       The following description applies on how to rebuild the sample using the
       supplied DBASE database.

       You may also use this sample against local or remote database such as
       DB2 using embedded SQL, CLI or ODBC or you may also use this sample with
       other ODBC Databases such as SYBASE or ORACLE.

HOW TO BUILD THE SAMPLE:


  1) Change to the X:\ibmcppw\samples\database\stocksom directory--where
     'X:' is the drive you installed the samples component of
     VisualAge for C++.

     - If you are using Workframe  Invoke the workframe project by typing

         iwf stocksom

     NOTE: If you are using embedded SQL, you must either first run RESETTBE
           from the command line before invoking workframe, or you must set the
           environment variable ISESQL=TRUE as follows

           - first choose the view menu item, then choose setting-environment
             variables.
           - set the ISESQL environment variable.


  2) If you wish to regenerate the Data Access Builders code you may do so
     using the supplied .DAX file. If you use the supplied .DAX file then from
     the command line type

       IDATA Stocksom.DAX

     then proceed to step 3.

     If you are not using the supplied .DAX file from the command line type

       IDATA

     If you are using workframe :

       If you wish to use the existing .DAX file, click the right mouse button
       and select Database.

       If you wish not to use the supplied .DAX file, select the Project menu
       item and select Database.
       You may then proceed to step 3.

     Create the table mappings by doing the following:

       a. Click on Create Classes from the Data Access Builder's startup window
          or select Create Classes from the File menu.
       b. Select ODBC DataSources for the Database Type field.
          - NOTE: if you are retargeting the sample to use CLI or Embedded SQL,
                  choose the DB2 Version.
       b. Select DAXSAMP database and click on Connect. Two tables INVENTO and
          RECEIVE are now shown in the table list box.
       c. Click on INVENTO and RECEIVE and then Create classes.
       d. From the Generate Options window select IDL, then select ODBC as the
          access method and click on OK.  The table class mappings are now
          shown.
          - NOTE: if you are retargeting the sample to use CLI or Embedded SQL,
                  choose the appropriate access method with IDL.
       e. Click Mouse Button two on the Invento table icon and select Create
          class.  From the Generate Options panel make the same selections as
          in the previous step and click on OK.
       f. Double click on the Invento1 class icon (blue sphere). The class
          notebook is shown.  On the Names page:
            - change the class name "Invento1" to "Prclist" and hit enter
            - change the file stem to "Prclist" and hit enter
            - deselect the Generate Makefile and the automatic link to
              application checkboxed then double click on the close box.
       g. Double click on the Invento class icon. The class notebook is
          shown.  On the Names page:
            - deselect the Generate Makefile and the automatic link to
              application checkboxes then double click on the close box.
       h. Double click on the Receive class icon. The class notebook is
          shown.  On the Names page:
            - deselect the Generate Makefile and the automatic link to
              application checkboxes then double click on the close box.
       i. The mapping is done. You can save this mapping by selecting Save from
          the File menu.

  3) Click Mouse Button 2 on each of the class icons (blue spheres) in turn,
     select GENERATE for each from the pop-up menu.  Close the Data Access
     Builder session by selecting Exit from the File menu.


  4) To build the executable for ODBC or CLI from the command line type:

       nmake -f bindings.mak
       nmake

     NOTE : If you are rebuilding for Embedded SQL, type

       nmake -f bindings.mak
       nmake -f esql.mak

     from Workframe:

      Select the bindings.mak file, right mouse click and select make.

      Select Build Normal from the Project menu item.

      NOTE: If you are rebuilding the sample to use Embedded SQL, you must first
            select the build normal option via the option pull-down and you must
            choose the DB2 Precompile option.


HOW TO RUN THE SAMPLE:

  After following the steps above to build the sample:

  From the command line.

  - from the X:\ibmcppw\samples\database\stocksom directory (where 'X:' is
    the drive you installed the samples component of VisualAge for C++ BETA)
    enter:

       RESETTBO - to reset the database tables to their intial state.

       CLIENT   - execute the generated program.

  From Workframe:

    Double click on the RESETTBO.BAT file.

    Right Mouse click on the Client.exe file and Choose the
    run monitoried option.

  The application will print the original price list followed by an updated
  price list reflecting the logged transactions.

  NOTE: If you are accessing a remote server, you may be required to supply
        a userid and password. They may be passed to RESETTBO and CLIENT.
        If you are using CLI use RESETTBC and if you are using Embedded SQL
        use RESETTBE.



FILE NAME(S)     DESCRIPTION
============     ===========
RESETTBO.BAT     This file resets the Car table to its intial state.
                 Use this file when using ODBC.
RESETTBC.BAT     This file resets the Car table to its inital state.
                 Use this file when using CLI.
RESETTBE.BAT     This file resets the Car table to its intial state.
                 Use this file when using Embedded SQL.
MAKEFILE         This is the makefile used to build the sample application from
                 the command line.
CLIENT.CPP       This is the client application that gives an example of how
                 the store class can be used.
CLIENT.EXE       This is the executable.
CRTDB.BAT        This file creates a local DB2 database called DAXSAMP.
                 You must run RESETTBE or RESETTBC after creating the local DB2
                 database to create and populate the database tables.
                 NOTE: If you are accessing a remote DB2 server, the database
                       must be created on the remote server and cataloged on the
                       local client.
ESQL.MAK         Use this Make file is you are recreating the application from
                 the command line and are using Embedded SQL.
STOCKSOM.DAX     This file is used to regenerate the Data Access Builder files
                 if you want to rebuild the sample.
STOCKSOM.IWO     This file is used to store the options associated with the
                 workframe project.
STOCKSOM.IWP     This file is used to invoke the workframe project associated
                 with this sample.
BINDINGS.MAK     This file must be run before nmake on MAKEFILE or nmake on
                 ESQL.MAK or before a workframe Build.
README.TXT       This file.


