I've been trying a solution for this, but. I cannot find it.
What I'm trying to do, is work with the "bind by reference" ability, but working with ILE RPG written with embedded sql.
I can use the BNDDIR ctl opt in my source. And everything works correctly.
But that means a "bind by copy" method. Checked deleting the SRVPGM and even the BINDDIR. And the caller program still works.
So, is there any way to use "bind by reference" in an ILERPGSQL program?
After my question, an example:
Program SNILOG is a module, that conains several procedures. Part of them, exported.
In QSRVSRC I set the exported procedures, with a source with the same name: SNILOG. Something like this:
STRPGMEXP PGMLVL(*CURRENT)
/************************************************** ******************/
/* *MODULE SNILOG INIGREDI 04/10/21 15:25:30 */
/************************************************** ******************/
EXPORT SYMBOL("GETDIAG_TOSTRING")
EXPORT SYMBOL("GETDIAGNOSTICS")
EXPORT SYMBOL("GRABAR_LOG")
EXPORT SYMBOL("SNILOG")
ENDPGMEXP
As part of the procedures are programmed with embedded sql, the compilation must be done with CRTSQLRPGI, using the parameter OBJTYPE(*SRVPGM).
So, I finally get a SRVPGM called SNILOG, with those 4 procedures exported.
Once I've got the SRVPGM, I add it to a BNDDIR called SNI_BNDDIR.
Ok, let's go to the caller program: SNI600V.
Defined with
dftactgrp(*no)
, of course!.
And compiled with CRTSQLRPGI and parameter OBJTYPE(*PGM).
Here, if I use the control spec
bnddir('SNI_BNDDIR')
, it works fine.
But not fine enough, as this is a "bind by copy" method (I can delete the SRVPGM or the BNDDIR, and it is still working fine).
When I'm not working with SQL, I can use the CRTPGM command, and I can set the BNDSRVPGM parameter, to set the SRVPGM the program is going to be called. Well, just their procedures...
But I cannot find any similar option in CRTSQLRPGI command.
Nor in opt codes in ctl-opt sentence (We have BNDDIR, but not BNDSRVPGM option).
Any idea?
I'm running V7R3M0 with TR level: 6
Thanks in advance!
the use of
bnddir('SNI_BNDDIR')
Is the way to bind by reference OR bind by copy.
The key is what does your BNDDIR look like?
If you want to bind by reference, then it should include *SRVPGM objects.
If you want to bind by copy, then it should include *MODULE objects.
Generally, you want a *BNDDIR for every *SRVPGM that includes the modules (and maybe a utility *SRVPGM or two) needed for building a specific *SRVPGM.
Then one or more *BNDDIR that includes just *SRVPGM objects that are used to build the programs that use those *SRVPGMs.
Related
In a green screen session, caling a program MYLIB/TESTPRG works when my library list is set to QGPL, QTEMP, VENDRLIB1, VENDRLIB2, VENDRLIB3. I can execute call MYLIB/TESTPRG on a green screen command line.
I want to be able to run this command from my Windows client. I created an external stored procedure MYLIB/TESTPROC with external name MYLIB/TESTPRG as I have seen in various articles. My original question stated that I could execute this procedure successfully in STRSQL in a green screen session with my library list as above, but that is false. It does not work. It simply says 'Trigger program or external routine detected an error.' Sorry for the wrong information.
When MYLIB/TESTPROC is called from the client (CALL MYLIB/TESTPROC), it fails with CPF9810 (Library &1 not found). I connected to the database via i Navigator -> Run SQL Scripts. In Connection -> JDBC Settings I had Default SQL schema = 'Use library list of server job' and set Schema list=QGPL,QTEMP,VENDRLIB1,VENDRLIB2,VENDRLIB3. I then executed CALL MYLIB/TESTPROC and got the message as stated above.
What works is when I run the program, i.e. CALL MYLIB/TESTPRG on a green screen command line.
TESTPRG is a C program that takes no arguments. The stored procedure was defined like this:
CREATE PROCEDURE MYLIB/TESTPROC
LANGUAGE C
SPECIFIC MYLIB/TESTPROC
NOT DETERMINISTIC
NO SQL
CALLED ON NULL INPUT
EXTERNAL NAME 'MYLIB/TESTPRG'
PARAMETER STYLE GENERAL ;
CPF9810 - Library &1 not found means that something is trying to access Library &1 (whatever that is, you didn't tell us) and the library as typed is not on the system anywhere. &1 is not the name of the library, it is a substitution variable which will display the library name in the job log. Look at the real library spelling in the job log. Check your spelling. Check the connection to make sure all the libraries are specified correctly. The message will tell you exactly which library is causing the problem.
If indeed the program works in green screen when the library list is set properly, then I would expect the problem to be in your connection where it is trying to set a library list. You cannot add a non-existent library to the library list. That is why it works in green screen, your library is necessarily typed correctly there, or it wouldn't be in the library list. You would get a similar error (same text, different error code) if you tried to add library with a spelling error to the library list in green screen.
Figure out the full text of the message (look in the job log), and you will see just what is throwing the error, and what the library is. Hint, it is not likely SQL throwing the error as those errors all look like SQL#### or SQ#####. More likely a CL command or it's processing program being called by an IBM server that is sending a CPF message.
As you have discovered, you can directly call simple programs without defining an external SQL procedure based on this documentation from IBM:
https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/db2/rbafzcallsta.htm
I believe the recommendation to create your own external procedure definition for simple programs is primarily to reduce ambiguity. If you have programs and procedures that happen to have matching names, you need to know the rules list to figure out which one is being called for instance.
Also, the rules for external functions are different than external stored procedures and those get confused as well.
Per my comment, I usually make my procedure calls with the library within the call command.
In a terminal session using CALL PGM(MYLIB/TESTPROC). Or in a SQL session using CALL MYLIB.TESTPROC.
This can prevent someone from inadvertently putting your procedure in a personal library or the like. I usually do not specify a session library list on my SQL clients, accepting the system library list.
I had promised to accept Douglas Korinke's comment as an answer. However, I was experimenting a lot and I am no longer sure of what I knew and when I knew it. My problem had something to do with parameter passing to the C program. If I can reproduce it with a simple case I will ask another question.
In a Java program it is possible to set the libraries by using the following method :
ds.setLibraries("list of libraries");
Example :
ds.setServerName("server1");
ds.setPortNumber(1780);
ds.setDatabaseName("DBTEST");
ds.setLibraries("*LIBL,DAT452BS,DAT452BP");
I want to compile my app using matlab-compiler it does so, but with issues...
It says there are some functions that are not licensed for compilation.
The problem is that I haven't used those functions (one of them is fimath.m) in my app.
I think these functions are used inside some of my functions which I don't know.
My question is how to find out which one of my functions are using those functions in order to remove them or replace them with other functions.
There are more than 50 functions in my app and it's not possible to check them one by one.
For every returned "unlicensed" function you can execute the following command,
dbstop in <function name> % without the <>
and afterwards run your code normally for several typical inputs/cases. If it stops at one of these breakpoints, look at the call stack (using either dbstack or the Editor tab of the MATLAB GUI), and identify the entry point from your own code.
If none of the breakpoints is ever hit, it could mean that these functions are referred-to inside the code, but some logic is preventing their execution (turning them, practically, to "unreachable code"). In this case, you will likely need to remove these references manually. To know where from, using information from the link posted by VTodorov you can list the dependencies of each file using
[fList,pList] = matlab.codetools.requiredFilesAndProducts('myFun.m');
which can be called on the output of dir (after some minor conversion). It could be useful to use the toponly flag.
I'm having this problem for a while now and google have its limits.
I'm writing a powershell file that contain several generic function.
I use the function in vary scripts and now I want to let other personal in my work to use them as well.
the problem is, do to sensitive operation, I want to lock and protect the script (compile to a dll, exe etc').
how do I create powershell library like C# DLL?
one option I try but did not find out how to continue is to compile the script using powerGUI to executable file ( .exe) but then I canot access the function in it let alone pass on parameters to that function.
hope you understood me :)
thank you.
You don't. Rather than trying to obscure this information (if you compile them, they can be decompiled and your "protected" resources will no longer be), remove them entirely and make those parameters for your functions. This both protects your "sensitive" data and makes the code much more reusable.
You can then package your functions into a module
Given this command:
MSBuild.exe build.xml /p:Configuration=Live /p:UseMerge=true /p:EnableUpdateable=false
how can I form a string like this in my build script:
UseMerge=true;EnableUpdateable=true
where I might not know which properties were used at the command line.
What are you going to do with the list?
There's no built in "properties that came via the commandline" thing a la splatting in PowerShell 2.0
Remember properties can come from environment variables and/or other scripts.
Also, you stripped on of the params out in your example.
In general, if one is trying to chain to another command, one uses defaulting (Conditions on elements in PropertyGroups) and validation (Messages Conditional on presence of options) and then either create a new property or embed the params you want to pass into a string.
Here's hoping someone has a nice neat example of a more general way to do this but I doubt it.
As covered in http://www.simple-talk.com/dotnet/.net-tools/extending-msbuild/ one can dump out the parameters passed by doing /v:diag on the commandline (but that's obviously not what you're after).
Have a look in the Common.targets files - you'll find lots of cases of chaininign involving manaully building up lists to pass onto subservient tasks.
This is a little convoluted, but lets try:
I'm integrating LUA scripting into my game engine, and I've done this in the past on win32 in an elegant way. On win32 all I did was to mark all of the functions I wanted to expose to LUA as export functions. Then, to integrate them into LUA, I'd parse the PE header of the executable, unmangle the names, parse the parameters and such, then register them with my LUA runtime. This allowed me to avoid manually registering every function individually just to expose them to LUA.
Now, flash forward to today where I'm working on the iPhone. I've looked through some Unix stuff and I've gotten very close to taking a similar approach, however I'm not sure it will actually work.
I'm not entirely familiar with Unix, but here is what I have so far on iPhone:
Step 1: Query for the executable path through objective-C and get the path of my app
Step 2: Use dlopen to get a handle to my app using: `dlopen(path, RTLD_NOW)`
Step 3: Use `dlsym( libraryHandle, objectName )` to attempt to get the address of a known symbol.
The above steps won't actually get me to where I want to be, but even that doesn't work. Does anyone have any experience doing this type of thing on Unix? Are there any headers or functions I can google to put me on the right track?
Thanks;)
iPhone does not support dynamic linking after the initital application launch. While what you want to do does not actually require linking in any new application TEXT, it would not shock me to find out that some of the dl* functions do not behave as expected.
You may be able to write some platform specific code, but I recommend using a technique developed by the various BSDs called linker sets. Bascially you annotate the functions you want to do something with (just like you currently mark them for export). Through some preprocessor magic they store the annotations, sometimes in an extra segment in the binary image, then have code that grabs that data and enumerates its. So you simply add all the functions you want into the linker set, then walk through the linker set and register all the functions in it with lua.
I know people have gotten this stuff up and running on Windows and Linux, I have used it on Mac OS X and various *BSDs. I am linking the FreeBSD linker_set implementation, but I have not personally seen the Windows implementation.
You need to pass --export-dynamic to the linker (via -Wl,--export-dynamic).
Note: This is for Linux, but could be a starting point for your search.
References:
http://sourceware.org/binutils/docs/ld/Options.html
If static linking is an option, integrate that into the linker script. Before linking, do "nm" on all object files, extract the global symbols, and generate a C file containing a (preferably sorted/hashed) mapping of all symbol names to symbol values:
struct symbol{ char* name; void * value } symbols = [
{"foo", foo},
{"bar", bar},
...
{0,0}};
If you want to be selective in what you expose, it might be easiest to implement a naming schema, e.g. prefixing all functions/methods with Lua_.
Alternatively, you can create a trivial macro,
#define ForLua(X) X
and then grep the sources for ForLua, to select the symbols that you want to incorporate.
You could just generate a mapfile and use that instead, no?