This is in some sense the stupid canonical
ProblemFrame, since both the
ProblemFrame and
JacksonStructuredProgramming originated with
MichaelJackson. This frame is a particularly well defined one.
For JSP to be good approach to solving your problem, the problem must be a close fit to this frame.
The frame fits problems where the required system will map an
input stream to an
output stream according to an
input-output condition.
The
principal parts are:
- the input and output streams, they must each:
- be a sequence of elements
- that sequence must be described by some RegularExpression
- the elements must correspond to individuals the input and output domains
- the input-output condition, it must
- relate subexpressions in the description of the input and output streams
- be approximately one-one between subexpressions (the more many-many or asymmetric it becomes, the worse the fit)
The
problem task is to construct a software system to transform the
input stream into the
output stream in accordance with the
input-output condition
--
KeithBraithwaite