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Knowledge Partner
Knowledge Partner

Calling Acucobol program from Java


We need from java to call a cobol program with the following linkage on Acu 9.1 on Unix:

  01 lnk-proc-block.       
        02 tbl-exams-lnk.
         03 tea-exam-lnk         occurs 500.
          04 tea-exam              pic 9(5).
          04 tea-analisis          occurs 500.
           05 tea-anal             pic 9(8).
           05 tea-resu             pic x(45).        
           05 tea-uni              pic x(15).
           05 tea-ran              pic x(12).
           05 tea-ens              pic x(2).
           05 tea-est              pic x(1).
           05 tea-estmuc           pic x(1).
           05 tea-orden            pic 9(3).
          04 tea-cantAnal          pic 9(4).
          04 tea-socio             pic 9(8).
          04 tea-tubo              pic 9(12).
          04 tea-check.
             05 tea-chalf          pic x(5).
             05 tea-chnum          pic 9(4).
          04 tea-impreso           pic x.
          04 tea-repetido          pic x.
          04 tea-bloque-fallido    pic x.
        02 totalRegistros          pic 9(4).
        02 nombreArchivoLogLnk     pic x(20).
        02 nombreArchivoModulabLnk pic x(80).
        02 graboArchivoTmpLnk      pic x.
        02 varIntentosLnk          pic 9(2) value 1.
        02 retorno-lnk             pic 9.

The samples that come with Extend do not include how to deal with an array of string.

Any ideas or samples to use?


Juan Urraburu

Juan Manuel Urraburu
Director of Technology @ ProRM & Axtrio
Micro Focus Knowledge Partner

1 Reply
Micro Focus Expert
Micro Focus Expert

RE: Calling Acucobol program from Java

I believe you need to consider this as one large string .. when using the CVM for Java calling COBOL, there is a CALL_OPTIONS which allows you to specify the amount of bytes the COBOL will receive. A Guide to Interoperating with ACUCOBOL-GT  Chapter 2: Working with Java Technology > 2.2 Calling COBOL from Java > 2.2.3 Using the Java API, "CVM.jar"  > CALL_OPTIONS class

The CALL_OPTIONS class contains a linkage_signature property that describes the data in the linkage section. For example, a linkage_signature of "X45X20SSIJ" describes two PIC X items of 45 and 20 bytes respectively, two shorts, an integer, and a long.

The linkage_signature ensures that there is enough memory for Java strings to get passed in, even when the Java string has a shorter length than the PIC X data item in the linkage section. For example, a Java string of length 10 can be passed into a PIX X(45) data item. In this case, 45 bytes are allocated to memory, not 10 bytes.

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