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Status Delivered
Categories EGL Language
Created by Guest
Created on Oct 20, 2010

Circumvent 64K limit in Java

It is possible to generate large EGL functions and records to Java without any errors.
No validation errors (red x'es) will be displayed for large parts.
But the Java compilation will fail if the byte code for a Java class exceeds 64Kbytes.
As it is fully legal to write large functions and records in EGL, the Java generator must automatically split the code into more classes if they exceed the limit.

Idea priority High
  • Guest
    Reply
    |
    Sep 14, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Programming Languages
    Product - Business Developer

    For recording keeping, the previous attributes were:
    Brand - Rational
    Product family - Design & development
    Product - Business Developer

  • Guest
    Reply
    |
    Apr 1, 2011

    In fix pack 8.0.1.1 we have made many changes in Java generation to significantly reduce the amount of code being generated. Some of these changes will also improve runtime performance by shortening code paths.

  • Guest
    Reply
    |
    Jan 11, 2011

    In an upcoming fix pack for version 8, we plan to implement the following changes, to avoid hitting the 64K limit:
    * Generate SQL statements into separate methods
    * Optimize away if/while/for statements when their conditions are true/false
    * Don't generate unreachable statements
    * Don't generate unused variables
    * Don't create a CallOptions object for local calls
    * Generate the ++ or -- operators when incrementing or decrementing a primitive int
    * Remove assignments where the source and target are the same
    * Simplify math expressions, e.g. x * 1 --> x and x + 0 --> x

    * Use primitives for IN parameters when possible

    We will continue to evaluate our generated code to see if we can find other places where we can reduce the amount of code that is generated.

  • Guest
    Reply
    |
    Nov 22, 2010

    Thank you for this suggestion. We agree that the Java generator could do more to avoid hitting the 64K limit. We will investigate the possibilities, but we do not have a time frame for implementation.