Lookup in rpgle

RE: Using %LOOKUP with an Array Data Structure in SQLRPGLE

With the new BIF, it would probably look something like this:. You probably already know that you can control the names of source files used for generation like this:. Yorkshireman AM. I envy you the ability to operate in a rational, controlled set of models where re alignment of such things is both possible and carried out. There is no way you could enforce it in the AD. I get the enthusiasm to find a way. The simplest way is to, as I said originally, deprecate the OPM generators and come kicking and screaming into at least the first decade of the 21st century You could say the same thing about USRSRC too - allow a marker to say exactly what type of code it can be used within. If one or two fundamental changes were made by CA, the devoted developer following could add in open source user source that could give effect to all manner of Good Stuff. First things first, deprecate the OPM generators. Oh wait, CA won't do that, for backwards compatibility. Rock and a hard place. Henky Saputera PM. Yorkshiremanthat's a very great point! By clicking here, you understand that we use cookies to improve your experience on our website. Skip to main content Press Enter. Sign in. Skip auxiliary navigation Press Enter. Skip main navigation Press Enter. Toggle navigation. Date range on this day between these dates. Posted by. Idea Details Back to Ideation Home. Last activity AM. By: Henky Saputera. Plex 2E. Hello Richard, You probably already know that you can control the names of source files used for generation like this: - within a loaded model environment e. This IS looking like a thread hijack isn't it? Again, just my personal opine But even IBM withdraw support for stuff. I can't help thinking that Simon's enthusiasm will be missed by us all. Just my opinion

%SCAN Built-In Functions in rpgle


Login or Sign Up. Posts Latest Activity. Page of 1. Filtered by:. Previous template Next. I would like to search array with my search arg. When I do lookup for the first time and array is empty yet, I get decimal data error. When I write sth to array and then do lookup, it works fine. What could be wrong? Or is there any way to search array? Tags: None. March 26th,AM. A decimal data error only occurs when the value being assigned to a numeric field is not valid for example moving spaces to a packed field. Perhaps your file field has an invalid number? Comment Post Cancel. Last edited by michal ; March 26th,AM. That shouldn't even compile. Did you copy and past this or just retyped it? If INVA is empty contains all blanks then the numeric field will also have blanks and you get data decimal errors. It should be a standalone field - missing the 's' in the d-spec. PGM has compiled correctly. This causes the program to initialize the data structure and its sub fields with their default or Inz values when the program starts. Barbara Morris. March 26th,PM. All rights reserved. Yes No. OK Cancel.

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Act now. Each free-form statement begins with an operation code and ends with a semicolon. Here is a list of the new operation codes:. RPG syntax in free form is similar to other modern languages and can be understood easily. The new syntax also makes programming easier for existing RPG programmers. This section describes the changes for a control specification H spec. Allowed keywords are the same keywords as an H spec. Multiple control statements are allowed and free-form control statements can be intermixed with fixed-form H specs. Each statement must be a complete statement. Example 2 illustrates an empty control statement. Example 3 illustrates additional control statements. This section describes the changes for declaration statements D spec. There are several types of declaration statements: named constants, stand-alone fields, data structures, procedure prototypes, and procedure interfaces. For those who are familiar with fixed-form definitions, there are a few keyword changes related to data types. This section provides additional details about these keywords. One enhancement related to the declaration statements is that file definitions and data definitions might be intermixed. This new rule also applies to fixed-form F and D specifications. A named constant declaration starts with DCL-Cand is then followed by the name, then by the optional keyword CONSTand then by the value and finally ends with a semicolon. Example 5 illustrates several named constant declarations. A stand-alone field declaration starts with DCL-Sand is followed by the name, then by an optional data type keyword, and then by zero or more keywords, and ends with a semicolon. If a data type keyword is specified, it must be the first keyword. Example 6 illustrates several stand-alone field declarations. If the LIKE keyword is used, there is no data type keyword. An optional second parameter can be specified on the LIKE keyword to do a length adjustment. Example 7 illustrates stand-alone declarations with the LIKE keyword. Named constants can be used within free-form keyword declarations. The named constant must be defined before the definition statement. Example 8 illustrates using named constants within declarations. If the data structure can have program-described subfields, an END-DS statement with an optional name must be specified. Example 9 illustrates several data structure declarations. If the data structure does not have a name, the END-DS statement must be specified without an operand.

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Array Operations. The basic array operations are:. Specifying an Array in Calculations. An entire array or individual elements in an array can be specified in calculation specifications. You can process individual elements like fields. Remember, if an array element is to be used as a result field, the array name with the comma and index cannot exceed 6 characters. To specify an entire array, use only the array name, which can be used as factor 1, factor 2, or the result field. Several other operations can be used with an array element only but not with the array name alone. When specified with an array name without an index, certain operations are repeated for each element in the array. The following rules apply to these operations when an array name without an index is specified:. When factors 1 and 2 and the result field are arrays with the same number of elements, the operation uses the first element from every array, then the second element from every array until all elements in the arrays are processed. If the arrays do not have the same number of entries, the operation ends when the last element of the array with the fewest elements has been processed. When one of the factors is a field, a literal, or a figurative constant and the other factor and the result field are arrays, the operation is done once for every element in the shorter array. The same field, literal, or figurative constant is used in all of the operations. The result field must always be an array. The same field or constant is used in all of the operations. Resulting indicators positions 54 through 59 cannot be used because of the number of operations being processed. Let us see the explanation for each of these basic operations. Search Argument. Array Name, Array Index. ARY, X. The search argument and array element or table element must have the same length and the same format. Resulting indicators can be assigned to equal and low, or equal and high. If only an equal indicator positions is used, the LOKUP operation will search the entire array or table. If your array or table is in ascending sequence and you want only an equal comparison, you can avoid searching the entire array or table by specifying a high indicator. Source field ArrayIndex. Target field ArrayIndex. ARY, Y. In this example, the MOVEA operation is performed on different length arrays having same element length. Both factor 2 and the result field must be defined as character. On a character MOVEA operation, movement of data ends when the number of characters moved equals the shorter length of the fields specified by factor 2 and the result field; therefore, the character MOVEA operation could end in the middle of an array element. Moves are only valid between fields and array elements with the same numeric length defined. Factor 2 and the result field entries can specify numeric fields, numeric array elements, or numeric arrays; at least one must be an array or array element. The numeric types can be binary, packed decimal, or zoned decimal but need not be the same between factor 2 and the result field. Factor 2 can contain a numeric literal if the result field entry specifies a numeric array or numeric array-element:.

Free-form RPG support on IBM i

The program passed testing and was deployed on to the production IBM i server. When being used in the production environment the program stopped being able to determine where the first unused element was. Before I describe what the problem was let me give a sample program I can use to illustrate this issue:. The array, called Array and defined on line 2, contains 30 elements and is in ascending sequence. I load the array in lines 5 — 20, filling 16 of the 30 elements. The rest are left at their default value, blank. The first test I performed, lines 21 — 26, was to check for the first array element that is blank, which should return If there is no element that is equal to blank I would expect it to return zero in the variable i. On line 25 the indicator 99 is in the equal position to indicate that this is a lookup equal. I have to admit this freaked me out. If I increased the array to 99 elements, see below, the having only 16 elements filled did not cause the problem as less than half the elements are filled. Just in case this was an error caused by using the latest RPG, all freeI created a program with fixed definitions and compiled it for release V5R4M0. I cannot compile for an earlier release as I only have access to IBM i with version 7. I found the same with that program too. Code for this program is here. One interesting passage on this page states:. When the array is out of order, the result of a binary search is unpredictable. How did I fix this problem? I initialized the array with the largest hexadecimal value, x'FF'and as the next unused element would contain x'FF' I would check for that rather than blank. Your basic problem Simon was that you lied to the compiler and when you do that all bets are off. Simply put, you told it the array was in sequence when it wasn't. Another reason for doing this is that if there are duplicates in the array as you effectively have with blanks in this example even if you sort the array after adding a new value you will not necessarily get the same result. I actually haven't tried this can't VPN into my system at my current location but I'm pretty darn certain your X'FF' solution will not always work. When a binary search is executed you cannot guarantee which of a series of duplicates will be returned - you lucked out and got the first one, but normally you have to walk backwards through the array from the returned index to determine the first one. I admit the example I gave in this post was very simple. I was loading a subfile from the array. What I found became the basis for this post.

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