If the array element number in the last of the subfiles records is the same as the number of rows fetched from the cursor turn of the end of subfile indicator. Notice that the s1csrrrn field is set to zero when the subfile is cleared and reloaded. If the cursor is not located on a subfile record, this field is zero. How can i display two subfiles on same pages in rpg programming with sample program to display the screens at the same jn create a display file subfiles in as400 has the subfile dds built into it. This newsletter normally covers cuttingedge technology, but every once in a while, either by request or by choice, i decide to write a back to basics article.
In this case, pageup and pagedown handling is required. There are the two mandatory key words for subfile program design. You use this recordlevel keyword on the subfile control record format to specify that the subfile is to be displayed as a horizontal subfile. With subfiles in freeformat rpg, you will learn how to.
This view explains the basic steps to create your first load all sub file in as400 ibm i. Now, this popular manual has been updated from beginning to end to teach subfile concepts and programming techniques using freeformat rpg. This forces a value of 1 into s1rcdnbr when the subfile is first displayed. Pfields can be used for the size of the subfile when using sflend with the scrbar parameter. Twenty years ago these are the kind of things you had to know to work on the old as400 systems. Intermediate rpg iv programming workshop interactive. I found these on an old dusty corner of my homeserver. I do this because not all of you readers are seasoned veterans. A subfile is a group of records that is read from or written to a displaydevice file. With subfiles you can create a display file with lists of items. The numberofrecordsinsubfile parameter can be specified in 2 ways. This class is intended for the rpg iv programmer who needs a better understanding of interactive. For example, a program reads records from a database file and creates a subfile. Everything about the look and feel of mc press online is nice and fresh and bright now.
As400 subfiles indicators allow us to as400 subfiles the status of the subfile from the rpg code. After clearing the subfile buffer, records equal to the size of sflpag is. All objects are stored on as400 in a single level storage. After clearing the subfile buffer, records equal to the size of sflpag is written. Cobol iseries as400 code examples iseries as400 sample cobol programs several sample iseries as400 cobol programs. The dds for the cities file used in this application note. In other words in a single page subfile all loaded records are displayed at. Advanced topics like subfiles, windows and advanced message handling are presented in this workshop. If the last subfile record written to the subfile fits exactly into the subfile, a status message cpf5003 is returned to your program.
The following is an rpg subfile example with a selection option. Consequently, you can add the following rpg code to process the click. Example subfile program using modern rpg someone asked me if i could recommend an example simple subfile program written in rpgfree. A subfile can be specified in the dds for a display file to allow a program to handle multiple records of the same type on a screen. It takes less than 20 seconds to write complete subfile code. How to create basic load all subfile in as400 ibm i. Best practice for displaying an empty subfile rpg400l. Subfile command links will go to the ibm site for a more detail definition. Once i added the overlay to the footer it worked fine. Students will create, debug and maintain numerous interactive rpg iv programs of increasing complexity. After a few minutes of googling most of the examples i found were in rpgiii, a few were in fixed format rpgle, and a couple had free format calculations.
Back to basics introduction to subfiles back to basics. This chapter, subfiles and data queues a perfect combination, looks at how to incorporate all the features in the program development manager pdm into a subfile. May 09, 2016 example subfile program using modern rpg someone asked me if i could recommend an example simple subfile program written in rpgfree. Kevin vandevers subfiles in rpg iv mc press, 2000 offered easytounderstand explanations of subfile concepts plus a bounty of practical examples, advanced techniques, and other cool stuff never before seen in subfile books.
In this chapter well create a subfile which will show all the cards from a client given its id. As a registered member of, youre entitled to a complimentary copy of chapter 7 of subfiles in rpg iv. Sep 10, 2017 this view explains the basic steps to create your first load all sub file in as400 ibm i. Youll need to use two keywords in the subfile control format. How do i call an as400 program from command prompt of windows. It will move several contiguous array elements to a variable, a variable to several contiguous array elements, and contiguous elements between two arrays.
By the end of the course you will have coded a loadall, expanding, single page and data entry subfile program and be able to identify and choose the right subfile for an application. A subfile is a display file where you can place a listing of values and process changes on the list. You can make subfile records available in a called program by defining the same display file in both the calling and called programs and sharing the open data path odp. U single page nonelastic subfile in this case sub file size sflsiz must be equal to subfile page sflpag. Overlapping conditioned subfile fields can this be done. Subfile is a group of records of same record format and can be read from or write to the display in a single operation. Description this utility can write subfile code for any given sql select statement with little or no user interaction. Interview question and answer as400 subfiles nick litten. If we are writing more records in the subfile buffer than the sflsiz declared and sflsiz sflsiz is extended to accommodate all records till the size of 9999. This is a musthave book for any as400 programmer, and is a great resource for anyone that needs to learn as400 subfile. For example, you can only sort on one subfield at a time. Window subfile you have to include the message subfile in the window. Modern rpg for the modern programmer rich diedrich jim diephuis susan gantner jeff minette.
This file is a millionplus file of cities of the world it is easily obtained on the internet. For example, in the product subfile, you may wish to add a new hyperlink for viewing product details, and then bind the hyperlinks response property to an rpg variable named viewlink. Sflctl subfile control sflsiz subfile size sflpag subfile page size sfldsp subfile display activation. Also as subfile as400 subfiles basically determines the amount of data that can be stored in subfile. For example, suppose pgma, which uses display file dspa, calls pgmb. Ile concepts in ibm i rpg programming in single video for. A subfile is nothing but just displaying records in tabular format on a display device. Mastering subfiles is often the defining moment in an rpg programmers career. Aug 09, 2019 as400 subfile pdf posted on august 9, 2019 by admin you use this fieldlevel keyword on the subfile control record format to specify that the page of the subfile to be displayed is the page that contains the record. A subfile with paging by ibm i and highlevel language program.
Aug 21, 2003 as a registered member of, youre entitled to a complimentary copy of chapter 7 of subfiles in rpg iv. Latest ibm as400 interview questions and answers for freshers and experienced pdf free download ibm as400 interview questions and answers list 1. A subfile is a collection or subset of records from a data file that is processed as a unit using a list screen. Basic coding figure 5 rpg program code indicator usage. This utility can write subfile code for any given sql select statement with little or no user interaction. Subfiles in as400 for programmers free download as pdf file. The sflcsrrrn keyword loads a fivedigit hidden field with the relative record number of the subfile record upon which the cursor is located. Foundation figure 5 rpg program xrd001rg indicators used.
The amount of time you want to put into the code should vary based upon the importance of a particular program to the subfles. On their own, each feature is simple to code in an rpg subfile program. Pdf using cpysplf and create zip file in as400 youtube. In display routine, afer writing the subfile ctl part, when it comes to read there it will not at all display the screen, just it will go to next statement.
The last subprocedure is executed when the position to field on the display file is changed. The statement says set z1rrn to one, then increment it by one each time the forloop cycles for the number of times held in the constant maxsfl. Redbooks front cover who knew you could do that with rpg iv. The programs first task is to load the subfile with one page of records in this case, nine. Z1rrn is the key field for the subfile, in every subfile record z1rrn must contain a unique sequential number. If the user presses page down roll up, control returns to your program and you load the next page, adding to the data already in the subfile. You use this recordlevel keyword on the subfile control record format to assign a command attention ca key or a command function cf key that the workstation user can press to fold or truncate subfile records that require more than one display line. Below downloadable pdf from scott explains the concept even further and it is worth reading it.
Application development toolset plus for as400 offers the easiest, most productive, and most costeffective tools for. System i as400, iseries, i5 introduction to subfile. Best practice for displaying an empty subfile ahh yes. The subfile first of all loads the data in subfile buffer. The subfiles in as400 can then branch to an inquiry program for customer details by selecting a customer from the list. Cobol400 subfiles the screen will come but only the footer will display and it will be in a it will end up abnormally. While sfl is used to define subfile record format while sflctl is used to define subfile control record format. I was writing a footer before exfmt of the control record. Sep 24, 2017 this video explains the basic ile concepts in rpg programming in ibm i. Aug 05, 2012 the dds for the screen listed here are the dds specifications used to define a typical subfile.
In this type of subfile, you load a single page and display it. Apis introduction the number of apis supplied with a system increases from release to release. When the subfile has been load the subfile display indicator is turned on if the subfile contains at least one record. To view or download the pdf version of this document, select dds concepts about 1170 kb. Enjoy the trip down memory lane or to use old rpg lingo as400nerd cabeq 1 start subfiles what is a subfile. Subfile record format, subfile control record format, relative record number, subfile record number, associated subfile keywords.
The displayed data is equal to the maximum number of records which can be displayed at a time. In this method all objects are referenced by one virtual address which is translated in to. Every time the record is written in the buffer, buffer is cleared before writing. This technique is very simple and in most cases quite a fast way to sort subfile data or any other kind of repeating data. It is always a subset of records from physical file hence the name subfile. But the real fun begins when you combine the features. Subfiles in as400 for programmers ibm system i search engine. Introduction to subfiles by kevin vandever the code for this article is available for download. When you read the subfile record, the system change the rrn to t.
Buy the digital pdf edition at the mc press ebookstore. After belonging to the realm of the advanced programmer, apis are playing an everincreasing part in our daytoday applications, for example, you might want an application program to be. In this case pageup and pagedown is taken care by system. As long as the user keeps the cursor on a subfile record, the system will redisplay the same page when the enter key is pressed. Single page subfiles nick litten is ibmi, as400 iseries. For example, a program reads records from a database file and creates a subfile of output records. Rules, examples, techniques, and other cool stuff, this updated and expanded work is brought up to the present with freeformat rpg examples and other new material.
Screen for sample application work with customers date 61692 time 21. It stores only the records currently shown on the screen in the subfile. The programtosystem field must be defined with a length of 5 and data type s. Therefore, the scroll bar can show a better picture of the subfile. Subfile programming chapter objectives upon completion of this chapter, you should be able to describe what a subfile is.
Basic coding figure 1 screen for sample application figure 1. You use this fieldlevel keyword on the subfile control record format to specify that the page of the subfile to be displayed is the page that contains the record. This book gives you the concepts, styles, and advanced techniques using freeformat rpg that will enable you to become a subfile master in your own right. The essential guide to freeformat rpg moving arrays in free format the movea move array operation performs some specialized assignment functions related to arrays. The subfile has more than one column of records displayed. On the flip side, if the initially defined subfile is too small, it may have to be expanded several times. How to combine more than 1 file into single zip file 3. This video explains the basic ile concepts in rpg programming in ibm i. Adams in the dds for a display file to allow you to handle multiple records of the same type on the display. Oct 11, 2019 as400 subfile pdf posted on october 11, 2019 by admin you use this fieldlevel keyword on the subfile control record format to specify that the page of the subfile to be displayed is the page that contains the record. Thanks bryce martin programmeranalyst i 5705464777 jerry c. This blog talks about the expandable subfile in rpg as400.
The course covers the definition of a subfile and all subfile dds keywords. You use this recordlevel keyword on the subfilecontrol record format to assign a command attention ca key or a command function cf key that the workstation user can press to fold or truncate subfile records that require more than one display line. Author of the definitive 2000 work subfiles in rpg iv. A basic understanding of rpg programming as covered in the rpg programming course isr4p. Feb 15, 2002 hth, peter dow dow software services, inc. The list of members that you can see in the pdm is an example of a subfile. If youve ever looked at pdm on the as400, you may have marveled at what a cool subfile application it. A single page subfile is a screen of displayed data loaded at a one time in one go. This article examines the coding required to write effective subfiles and present them onscreen without clearing the lines behind the subfile. Rules, examples, techniques, and other cool stuff written by kevin vandever and published by mc press. Redisplaying the first page of a subfile is a major annoyance to users. The number of records that actually fit in the subfile depends on the fields selected for each record written to the subfile. Of course, you could group two subfields together if they happen to be adjacent in the subfile record.
Application development toolset plus for as400 offers the easiest, most productive, and most costeffective tools for creating client and server applications. After a few minutes of googling most of the examples i found were in rpgiii, a few were in fixed format. Its up to the developer to define the column headers and the fields used for each row of the subfile. May 03, 2011 if the first time you do a readc to the subfile to calculate the value, you should update the subfile record with the sflnextchg indicator on. What are the two record formats that a subfile contains. System i as400, iseries, i5 cobol subfile programming. We call this subfile nonelastic also which means, the buffer size will be equal to the page size always.
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