U single page nonelastic subfile in this case sub file size sflsiz must be equal to subfile page sflpag. One day a friend asked me is it hard to create a single page subfile just using sql and also with a search option. These terms changes apply only to the v4r2 as400 programming languages and application development tools software covered in this announcement. Redisplaying the first page of a subfile is a major annoyance to users. Also, in a single page subfile both rollup and rolldown keywords must be defined in the dds of the subfile control format. A single page subfile is a screen of displayed data loaded at a one time in one go.
As this is a load all subfile i want my subfile to be 9,999 records. If subfile size equals subfile page, sfldrop is ignored. That is the maximum number of records that the system will display in the. As400 interview questions and answers from realtime interviews. This is because the rollup and rolldown activities are handled by the program. Author of the definitive 2000 work subfiles in rpg iv. Youll set the sflrows variable to be the number of subfile rows you have on a single page. You can understand the logic of it by debugging a existing program.
Depending on your file, this may not be appropriate for your situation. Subsequent pages are added to the subfile as per the user demand. We cant display the 0 records in a subfile by using loadall. Single page subfile dmw, thats still not exactly free. There are ddsspecifications which define certain keywords to. We also want to remove the sflrcdnbr we added for the expanding subfile example, since a page atatime subfile by definition loads only one page. Code400 is an open source experiment in rpgle, sqlrpgle, clle, php, mysql for the ibmi iseries as400.
The displayed data is equal to the maximum number of records which can be displayed at a time. I still use them regularly after 25 years that, plus vast intelligence and the ability to steal good. I know its a silly question but i am very new to rpgle and subfile. While the choice you make for the subfile page is pretty well fixed based upon the size of the screen and visual presentation, the choice for subfile size is more arbitrary. But unlike single page the buffer is not cleared before writing the new data. The site host a forum and tools to upload source samples directly to. A single page subfile is characterized by equal number of subfile and page sizes. Basic coding figure 5 rpg program code indicator usage. Single page subfiles nick litten is ibmi, as400 iseries rpg. This video explains the logic of single page sub file.
D d s1rcdnbr is defined using the dds keyword sflrcdnbr seen on d the subfiles control record. This technique is very simple and in most cases quite a fast way to sort subfile data or any other kind of repeating data. Introduction to single page sub file in ibm i youtube. The programtosystem field must be defined with a length of 5 and data type s. For example, if sflpag and sflsiz are specified, and the subfile record. Subfile command links will go to the ibm site for a more detail definition. Youll need to use two keywords in the subfile control format. A warning message is sent at file creation if the entire record fits on a single display line. I was writing a footer before exfmt of the control record. The following is an rpg subfile example with a selection option. In that case youd have no choice but to process the readc lines with every exfmt, unless the key is a cann key. Rules, examples, techniques, and other cool stuff, this updated and expanded work is brought up to. Note the value for the pfield must be greater than the subfile page value.
How to create basic load all subfile in as400 ibm i youtube. It is used to govern which page is d seen after loads. How to create a subfile program without using any native i. How to code page up and page down in rpg for single page subfile without using rolluprolldown in ds answer krisalli making sflsiz atleast 1 greater than the sflpag. Can you give please me the code for loading a single page subfile and how to handle the page up and page down key in that program. Terms and conditions for prior as400 programming languages and application development tools versions and other as400 software. This book gives you the concepts, styles, and advanced techniques using freeformat rpg that will enable you. Here is the source to a windowed, page at a time, subfile select with multiple columns, in free, submitted for your approval dds for the display file. How to code page up and page down in rpg for single page. The source for the display file and the product file used in the. Refer to rpg subfile that loads subfile one page at a time. These templates are fully functioning programs that include both dds and rpg iv code from basic singlepage display. Because it will be displayed on the screen, this makes sense.
Write complete subfile code in less than 20 seconds. Single page subfiles nick litten is ibmi, as400 iseries. My understanding is that a single page subfile is just that a single page. Example subfile program using modern rpg someone asked me if i could recommend an example simple subfile program written in rpgfree. Toggle navigation as400 tutorial as400 chapters as400 faq as400 ebooks as400 course. In other words in a single page subfile all loaded records are displayed at a time. The only way i can think of doing it os on a single page subfile or a standard display where you define. The dds for the cities file used in this application note. Controlling subfiles there are several areas of programming which make up a successful subfile program. Hi i have had a think about this and a bit of a play. On a singlepage subfile, when the user rolls up or down for the next or previous page, data changed on the current page must be validated and applied to the database first. Best practice for displaying an empty subfile rpg400l. In a pageatatime sfllensflpag subfile, there is no limit, since the.
To help manufacturers choose as400 subfiles right software. Initially the only the first one page of the subfile is loaded. An expandable subfile is one in which ideally one page of records are loaded at a time. Change detection methods are easier to work with on a singlepage subfile, and you are likely to get fewer change clashes anyway and better user satisfaction. This file is a millionplus file of cities of the world it is easily obtained on the internet. The source code of the dds and rpg iv program which processes the subfile are given in the example below. What are the three types of keywords associated with printer file. The as400 defines the subfile as part of the display screen. Hi yusufanyone, i want to write same load all subfile program in cobol400. Basically it is just a code for air waybills xxx xxxx xxxx so the subfile is displayed in four columns with a select field in front of. July complete understanding of any subject begins with a starting point to build upon. Every time the record is written in the buffer, buffer is cleared before writing. The important key words for a single page subfile include.
In single page subfile,if i select the mutiple options in 1 page and without pressing enter,i press rollup key pagedown. And set the previoussflrows to be twice that number, but make it negative. Subfile relative record number, page size and page. What is the maximum number of records you can specify in a display file.
This is a utility to create subfile code for given sql select statement. Single page subfile code needed search400 techtarget. He was though managing page up and page down would be difficult when using sql. Because, in the case of loadall subfile, system take care the pageup and pagedown request for up to 9999. He was though managing page up and page down would be difficult when. Many a times no rollup is defined and the next page is loaded with enter return key only. The first thing you must learn is how to read and understand the manuals.
The sflcsrrrn keyword loads a fivedigit hidden field. In such case how i can handle it in rpg becasue in single. Subfile screen limitatio solutions experts exchange. Single page subfiles ibm i, as400 and iseries rpg waffle. We must modify the screen to make the subfile page equal to the subfile size by replacing the highlighted section of figure 2 with the code in figure 4 page 32.
Single page subfile code400 the support alternative. Mastering subfiles is often the defining moment in an rpg programmers career. The internal value associated with the each subfile record. Allatonce subfiles are loaded in a single pass, and the system handles the pageuppagedown keys for you. As400 interview questions, mainframe as400 interview. Single page subfile rick, try switching to decaf my man. I have a subfile where the user can select one or more records. How to create a subfile program without using any native io operations. In that case youd have no choice but to process the readc lines. This is the full source code for the subfile sort program that appeared in the may 2004 issue of the iseries extra newsletter. There are two main differences in my single page subfile program than many.
The displayed data is equal to the maximum number of records which. Btw my bday is 21 days away, this gives you plenty of time to save up for my gift. Best practice for displaying an empty subfile ahh yes. In this case, pageup and pagedown handling is required.
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