Using IBM Application Development Tools for z/OS and OS/390

464 Using IBM Application Development Tools for z/OS and OS/390

25.1 Getting started

This section tells you what must be running on the system to allow the applications to

execute.

Before you can start the applications, the subsystems must be started. On our system, we

issue the following chain of commands to display a list of all active jobs, and to sort them

alphabetically:

=a;sd;da;prefix *;sort jobname

Each of the processes listed in Table 25-1 are found to be active.

Table 25-1 Subsystems required for Trader application

25.2 Trader application in CICS

We present here the CICS/VSAM application. The panels and process are also valid for DB2

and IMS data.

25.2.1 Log on to the application

The following steps will start the Trader application:

1. Verify that you have installed this application correctly.

2. Logon to your demonstration CICS region; in our case, it is C001.

3. Enter the transaction MYTD.

4. Enter the user name RB_DEMO and the password xxxx as shown in Figure 25-1.

Jobname Purpose

CICSC001 The CICS demonstration region, in which the CICS, COBOL (and DB2 and IMS)

demo application programs (MYTRADxx) are installed and configured

DBA1MSTR DB2 process

IMS61CR1 IMS

Note: Substitute the appropriate job names for your environment’s CICS, DB2, and IMS

processes, and then verify that they are started and active.

Chapter 25. Guided tour of the Trader application 465

Figure 25-1 CICS Trader Logon panel

25.2.2 Running the Trader application

After the logon, the Company Selection panel is displayed, as shown in Figure 25-2. Select a

company you want to trade.

Figure 25-2 CICS Trader list of companies

Note: In the Trader application, navigation keys are displayed at the bottom of each

screen. PF3 is used to go back to the previous screen (except on the Logon screen) and

PF12 is used to terminate the application.

466 Using IBM Application Development Tools for z/OS and OS/390

The Options panel is displayed, as shown in Figure 25-3.

Figure 25-3 CICS Trader actions available for this company

On this panel, you select the trading option you want to perform:

򐂰 Obtain real-time quotes for a company.

򐂰 Buy additional shares of the company.

򐂰 Sell existing shares of the company.

You continue by selecting each option.

Chapter 25. Guided tour of the Trader application 467

25.2.3 Obtain real-time quotes

The following steps will obtain real-time quotes:

1. Request a list of real-time quotes for the selected company by selecting option 1.

2. Share prices from the prior week are displayed including net present value as shown in

Figure 25-4.

Figure 25-4 CICS Trader quotes

Figure 25-4 displays the price of the company’s share over the past seven days, the number

of shares held, and the value of those shares based on the current day’s price.Data is

retrieved from:

򐂰 The company’s share price is read from the VSAM file DEMOS.PDPAK.COMPFILE

(COMPFILE).

򐂰 The details of the user’s portfolio, (such as the number of shares held), are read from the

VSAM file DEMOS.PDPAK.CUSTFILE (CUSTFILE).

Press PF3 to return to the Options panel.

468 Using IBM Application Development Tools for z/OS and OS/390

25.2.4 Buy shares

The following steps will buy shares:

1. Request to buy shares of the selected company by selecting option 2.

2. Enter the number of shares to purchase, as shown in Figure 25-5.

Figure 25-5 CICS Trader buy shares

3. A confirmation message is issued.

The Options panel is re-displayed with a message in the bottom, left-hand corner

indicating the status of the transaction.

Request Completed OK

If the process is successful, the value of the number of shares held is updated in the

CUSTFILE.