Importing modules
Use the IMPORT ... instruction to import BDL,
C or Java external modules in the current module.
The IMPORT {JAVA|FGL} instruction can be used to declare
the usage of an external module. All (public) symbols of the external module can be referenced
in the current module.
The IMPORT {JAVA|FGL} instruction must be the first
instruction in the current module. If you specify this instruction after
DEFINE, CONSTANT or GLOBALS,
fglcomp will report a syntax error.
The IMPORT {JAVA|FGL} instruction can import a compiled
Genero module, a Java class or a C extension
library:
IMPORT FGL modulename: Imports a Genero module implementing functions, reports, types and variables.IMPORT JAVA classname: Imports a Java class or class element.IMPORT libname: Imports a C extension implementing functions and variables.
Note: The name specified after the
IMPORT FGL or IMPORT JAVA
instruction is case-sensitive; program module (.4gl) or Java class must exactly
match the file name. However, for backward compatibility, C extension library names are converted to
lowercase by the compiler (therefore, we recommend you to use lowercase file names for C
extensions). A character case mismatch will be detected on UNIX™ platforms, but not on Windows® where the file
system is not case-sensitive. Regarding the usage of imported symbols in the rest of the code (not
in the IMPORT instruction): C extensions and Genero symbols are case-insensitive,
while Java symbols are case-sensitive.