109 lines
5.8 KiB
HTML
109 lines
5.8 KiB
HTML
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<meta name="DC.Title" content="DDM example 2: Description of ORDERENT program" />
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<meta name="abstract" content="Initially, the ORDERENT program exists only in library PGMLIB on the central server (in Philadelphia)." />
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<title>DDM example 2: Description of ORDERENT program</title>
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<body id="rbae5apaex2b"><a name="rbae5apaex2b"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">DDM example 2: Description of ORDERENT program</h1>
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<div><p>Initially, the ORDERENT program exists only in library PGMLIB on
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the central server (in Philadelphia).</p>
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<div class="section"><p>This program does the following items:</p>
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<ul><li>When an order entry operator enters a customer number, ORDERENT reads
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the customer number, then reads the first member of file CUSTMST2 in the PGMLIB
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library to find the customer name, address, and other information. The retrieved
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information is displayed to the operator, and the program asks for an item
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number and quantity desired.</li>
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<li>When the operator enters an item number and quantity desired and presses
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the Enter key, the program changes the corresponding primary item in the first
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member of the INVEN file, and it adds a record to the DETAIL file for each
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item and quantity entered. The program continues asking for another item number
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and quantity until the operator ends the program.</li>
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<li>When the operator ends the program, the file CUSTMAST is changed with
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the information for the entire order. (See the pseudocode of ORDERENT for
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details.)</li>
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</ul>
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</div>
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<div class="section"><p>For the following examples, it is assumed that all users on the
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remote servers who need to access CUSTMAST in Philadelphia already have authority
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to do so, and that those who do not need authority do not have it. In these
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examples, the <span class="keyword">iSeries™ server</span> in Chicago
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does not have a compiler.</p>
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</div>
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<div class="section"><p>If we want this program to be used at all the remote locations
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that also stock a physical inventory, the program needs to be sent to each
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of the remote servers. We can assume that each of the remote servers has its
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own inventory and primary files INVEN, DETAIL, and CUSTMST2 (which is a copy
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of CUSTMAST). How the program can be sent to a remote server is described
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in <a href="rbae5tsk1.htm#rbae5tsk1">DDM example 2: Transfer a program to a target server</a>.</p>
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</div>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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</div>
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<div class="example"> <pre id="rbae5apaex2b__pseudo"><a name="rbae5apaex2b__pseudo"><!-- --></a><strong> Pseudocode for ORDERENT Program</strong>
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•
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•
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•
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DECLARE CUSTMAST CHANGE
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* Declare file CUSTMAST and allow changing.
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DECLARE CUSTMST2 READ
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* Declare file CUSTMST2 as read only.
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DECLARE INVEN CHANGE
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* Declare inventory file INVEN and allow changing.
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DECLARE DETAIL OUTPUT
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* Declare file DETAIL as output only.
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•
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•
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•
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Open CUSTMAST, CUSTMST2, INVEN, and DETAIL files
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* Begin program.
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Show order entry display asking for CUSTNO.
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* Order entry operator enters CUSTNO.
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If function key, go to End.
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Read CUSTNO from display.
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For CUSTNO, return NAME, ADDR, and other
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information from CUSTMST2 file.
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Show NAME, ADDR, and other information on display.
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LOOP: Display 'Item Number ___ Quantity Desired ____'.
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* Order entry operator enters item number and quantity.
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Read ITEMNO and Quantity Desired from display.
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If ITEMNO = 0 then go to LOOPEND.
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Change INVEN with ITEMNO and Quantity Desired.
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Write an item record to the DETAIL file.
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Go to LOOP.
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LOOPEND: For CUSTNO, change CUSTMAST using
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information in file INVEN.
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End
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* Program has ended.
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Close CUSTMAST, CUSTMST2, INVEN, and DETAIL files.
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RETURN</pre>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbae5apaex2.htm" title="This second example shows how multiple locations in a customer's business can process the same order entry application using DDM.">DDM example 2: ORDERENT application</a></div>
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</div>
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</div>
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</body>
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