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The system features that contribute to increased program productivity,
enhanced data center operations, and efficient machine usage are
outlined below.
INCREASED PRODUCTIVITY
Programmer time spent on maintenance and development is a necessary
cost in running an OS data center. However, a significant portion
of this time is spent on performing non programming related functions,
thereby increasing costs. Jol provides the following features
which substantially reduce the time and training required to carry out
these functions.
- Ease of Use:
Jol's English-like free form and
procedural format makes it easy for programmers and non-DP personnel to
use.
- Scheduling and Networking
Capability: Jol
automatically submits jobs on particular days. Networks can
easily be created allowing jobs to run in parallel, or
concurrently. Jol's Scheduling and Networking Facility works
equally well with Jol and JCL.
- Dependent Jobs
Facility: Jol enables Users to submit
subsequent jobs at any point within the job currently executing.
This process provides a facility to effectively schedule dependent
jobstreams. The dependent job is not submitted or placed on the
system job queue until the current job has reached a point where it is
desirable or safe to run the dependent job. By using this
technique, a linkage can be created which controls the sequence of
running a number of jobs.
- Allocation, Reading and
Writing Data Sets: Jol has
ALLOCATE, READ, WRITE
and CALL instructions similar
to TSO. A job
can read a data set, examine it, and create Jol code based on the
information in the data set. The CALL
instruction also allows any
program to be executed, and the return code tested during the Jol
Compile. Thus, job streams can be created based on a program
return code.
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- Relational
Capability: Jol's powerful macro facility
is a set of instructions stored in a macro library that creates Jol
instructions tailored to the Users specifications. This facility
provides a transparent error free interface, for the programmer and
User, to existing software products. Additionally, Jol macro
instructions, such as, SORT, COPY,
PRINT, COMPILE and COMPRESS
are
available to reduce the redundant labor efforts normally associated
with these common routines.
- Change Facilities:
Jol's comprehensive command
structures reduce the labor intensive practices associated with OS
jobstreams. With Jol, all program and data set definitions are
defined once. This feature dramatically reduces the time required
to implement changes.
- Registration Capability:
Jol enables Users to record
all attributes of a program once (i.e. name, language type, source
location, function, load library name, file names, compiler options,
link options, autocall libraries, and copy libraries). This
facility provides standard enforcement and swift accessibility to the
attributes of the program.
- Library Facility:
Jol provides an include capability
similar to the COBOL copy verb
which allows common or static code to be
stored in the INCLUDE
library. This library can contain program,
data set, and data card definitions which can optionally be defined in
a single member or as individual members. The current values of
these definitions can be defined with symbolic variables, thus,
allowing temporary changes to the procedures and enabling multiple
Users to share the member containing these definitions.
- Logic Capability:
Jol contains IF, THEN, ELSE, AND/OR
and DO logic which provides
the programmer with a powerful tool to
manipulate programs in jobstreams based on variable conditions,
calendar information or ABEND
situations.
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