progress 4gl session variables

It's not them. But, when moving into new areas, like OO, there is no need to support historical code because there is no historical code. Purchase orders contain a single delivery date for each line item. How do I use PHP to get the current year? Your observations regarding the ABL documentation, the examples therein, best practices using the ABL, new ABL features vs. older 4GL practices, etc, will definitely be looked at by the relevant PSC people. A Block is a series of 4GL statements grouped together and treated as a single unit. //A 64-bit integer initialized to -200, DEFINE VARIABLE l AS LOGICAL NO-UNDO. What is the difference between Begins and Matches Operator? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Progress recompiles the called procedure, substitutes arguments, and then runs the procedure. Why did US v. Assange skip the court of appeal? Supplier schedules specify dates and even hours of delivery for the near term, and inform MRP and the supplier about long-term plans. When we define temp table with like option index will inherit the index information from the database table. For any given release, there is, substantial work required to update and add new, documentation to cover new features, so it is not, surprising that there isn't a lot of resources, available for going back to material that hasn't. I can go with that a few releases, but sooner or later the docs need to be gone over, updated, and cleaned up. A preprocessor directive is a statement that begins with an ampersand and is meaningful only to the preprocessor. Yes, A READKEY statement does not have to be the first statement after the word EDITING. And so is using include files in lieu of .p's and super procedures, defining multiple static queries as opposed to using dynamic query specifications and the like. Would My Planets Blue Sun Kill Earth-Life? Before the Compiler analyzes your source code and creates r-code, the preprocessor examines your source code and performs text substitutions.You control the preprocessor by placing preprocessor directives throughout your source code. But, this doesn't seem to be making it out in to the examples. There are almost certainly two or three factors involved in things like this persisting in the documentation. Episode about a group who book passage on a space ship controlled by an AI, who turns out to be a human who can't leave his ship? You normalize a database in order to ensure data consistency and stability, to minimize data redundancy, and to ensure consistent update and maintainability of the data, and avoid update and delete anomalies that result in ambiguous data or inconsistent results. A Widget is an object that provides visual and interactive capabilities for a progress application. Procedure can be ab external procedure(.p,.w) but not function. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If the null hypothesis is never really true, is there a point to using a statistical test without a priori power analysis? To learn more, see our tips on writing great answers. If the time does permit, one runs it through ProLint and deals with the report. Ans:- Transaction is a set code which completely done the program or completely undone the program. OO has a place but it isn't the be all and end all. Can-find is used only for data existence. Otherwise, it is the directory specified using the Temporary Directory (-T) parameter. And display. QUERY-OFF-END Function - Returns a logical value indicating whether the specified query is positioned at the end of its result list (either before the first record or after the last record). But the default should be "full nagging". put even more strongly, it's because the book was, trying to strike a balance between material for those, who may be maintaining older applications and those, There are a number of places in the book. Re-fetch record and modify its lock status. Identify blue/translucent jelly-like animal on beach. There are a number of places in the book where I try to describe outdated features, while leaving it to others in the company to make formal definitions of what is "deprecated" and what that really means. */ /* Strings. For First fetch the data from record list and Find first fetch the data from record buffer. Find first fetches the first record that matches the given condition while for each starts an iteration to display all the records that are available in the table matching the condition given with the for each statement. What is the goal that you are trying to achieve? I've looked at the SQL Reference and SQL Development handbooks but didn't see anything like this. Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Let's assume you want to stuff a frequently used object handle somewhere: - you can walk the object chain all the time, trying to find your instantiated class instance, - or you could check the local new global shared variable, Perhaps we should stop and think about whether or, not the OO kool-aid is really all that it's knocked, up to be. 2. Q:- Can you define a variable with same name both inside and outside a procedure? Updated Apr 12, 2017 By default, the OpenEdge installation program tailors all the necessary OpenEdge and Java environment variables to the directories where they are installed. ENABLE Enables input for one or more field-level and child frame widgets within a frame. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. But how are you going to find this singleton object when: - there is no "static" specifier in the OO4GL (there is no "METHOD PUBLIC STATIC " nor a "STATIC CLASS " as far as I know). I find it very difficult to believe that the overhead of the run itself doesn't swamp out the overhead associated with a parameter versus a shared variable. This, to me, is one of the very interesting challenges facing PSC. Oh, you mean like all of the OERA code examples? rev2023.5.1.43405. //A variable with a label. I don't see a problem with adding more and I don't believe that it would break any automated processes. This should always be the default unless transactional control over this variable is a requirement. well, shoot me, but we are doing our best to, move the community forward while at least, acknowledging that newer better programming, mechanisms co-exist (happily, for the most part), with older code that remains successful for what. 2) We would certainly like to encourage honest feedback and robust debate on this forum. You can use this pointer to: Position to and retrieve a record from a results list. where there were no parameters, which is a silly example? Is it possible to give different formats to the variables while defining using shared and new shared statements? OUTPUT PARAMETER - Defines a parameter that returns a value to one of the following destinations: If the calling procedure runs the current (called) procedure synchronously, the value is returned to the corresponding OUTPUT parameter of the RUN statement in the calling procedure. VARIABLE variable-name Defines and identifies a variable whose value you can access only within the current procedure, method of a class (including constructors, destructors, and property accessors), or as a PRIVATE data member of a class. How To Pass Parameters From The Command Line ( -param ) - Progress.com What is one circumstance where a shared variable, is superior to a parameter other than in a version of Progress. There is plenty of room for both solutions. However - something as outdated as shared variables should be termed "obsolete", "legacy" or something to convey that it's an old way of doing thins. In contrast to the INDEX function, R-INDEX performs the search from right to left and when it found the target then it count from left to target position. Perhaps there should even be a section in the docs on "practices to be avoided", BTW -- I do agree that the documentation should be, done differently. Specifying NO-UNDO for a variable is useful if you want to indicate an error condition as the value of the variable, perform an UNDO, and later take some action based on that error condition. This will create two cross referencing text files that will look like this: "NEW-SHR-VARIABLE bool" in proc1xref.txt tells you that a shared variable named bool has been created and "ACCESS SHARED bool" tells you that it has been used. And in a lot of cases it should be generally possible to largely automate many common code conversion issues. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I'm not sure why such an prolific proponent of best practices as yourself would want to coddle miscreants but I suppose that it would be reasonable for PSC to include an option to shut off such warnings. Widget types are starting with windows. Shared lock is the default lock used in progress. Used for processing specific even which always has to be performed. By the time parameter passing was introduced to the product there was a significant amount of code written throughout the 4GL community that used shared variables. That policy has its cost, of course, and I'm not sure that it has entirely fulfilled its purpose, as witness the large number of sites (vast majority?) //An character array with length = 5, DEFINE VARIABLE j AS INTEGER EXTENT NO-UNDO. If no locks are specified then it will be specified as shared lock. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. See Trademarks for appropriate markings. This behavior supports recursive procedures and bill-of-materials applications. The default buffers in progress are Data Buffer, Record buffer, Screen Buffer, Edit Buffer which are mainly used for input output operation. Normalization theory is based on the concepts of normal forms. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, How to make an existing frame responsive in Openedge,progress 4gl, How a top-ranked engineering school reimagined CS curriculum (Ep. Shared variables need to be relegated to the "for historical information only" pile and left there. What are the types of Indexes? Reactions:trmrahim Good practice should be emphasized and less good practice relegated to the "notes" section or at least given less prominent billing. So the scope of the record is the portion of the procedure where that record buffer is active. disadvantages weren't sufficiently emphasized. chand = STRING(whand). If you need more than one record at a time from a table, you can use the DEFINE BUFFER statement to define additional buffers for that table. How to find all the defined variables in Progress-4gl? Learn progress-4gl - Progress ABL is statically typed. Just joking, but it is something we've considered. A transaction is a set of changes to the database, which the system either completes or discards, leaving no modification to the database. I've an old desktop application developed in progress 4gl.There is a frame contained in a progress window now my task is to make the frame responsive ie based on the size of its container window the frame should resize dynamically.Is it possible in Progress any workaround will be appreciated.Thanks openedge progress-4gl Share Improve this question Otherwise the table will be released only after the end of the block. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? "Traditional" ways of doing things need to be replaced when better ways of doing things come along. There should be a number of different examples showing different ways to, accomplish a given goal, with a description of each one's strengths and. Shared Variable - Defines a variable that was created by another procedure that used the DEFINE NEW SHARED VARIABLE or DEFINE NEW GLOBAL SHARED VARIABLE statement. To you and I and a bunch of other people, shared, variables are anathema, but there are still a lot of. DEFINE VARIABLE dt AS DATE INTIAL TODAY NO-UNDO. e.g. 1. And so is using include files in lieu of .p's and super procedures. Why this "war against shared variables"? In above example if u doesnt mention the NO-WAIT clause and mean while if user1 has gone for some other work/tea, then user2 will hit the database every time to update the record, means progress will not move the next line of code until it will not get the release of exclusive-lock. That this evil may be useful is a separate issue. There are a few areas where OO might be worth giving consideration to if the Progress implementation goes in good directions (such as the excellent decision to implement simple accessor syntax). Which was the first Sci-Fi story to predict obnoxious "robo calls"? Connect and share knowledge within a single location that is structured and easy to search. Date any common dates Initial value - ? DEFINE VARIABLE a AS CHARACTER EXTENT 5 NO-UNDO. I wrote a Progress 4GL procedure which is actually a script saved in OS (not in database). If the current procedure is the event procedure specified to handle the PROCEDURE-COMPLETE event for an asynchronous remote procedure, the value comes from the corresponding OUTPUT or INPUT-OUTPUT parameter of the remote procedure.

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