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Category:MAPPER: Difference between revisions
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MAPPER (also more recently known as BIS) was originally a product of the Sperry Corporation and was a mainframe product implemented on the Sperry 1100 systems. It was designed by Louis Schlueter in 1968. It was the first spread sheet with 150 user functions to process data. The run script language was created in the early 70's as the first Macros. In the 80's it was called a 4GL and was also the first major programming language that was easy to learn. Many of the manual function users became Run Designers and developed their own applications. This eliminates the need for the Data Processing (Programmers) Department.
After the merger of Sperry and Burroughs to create the Unisys Corporation, MAPPER was implemented on additional platforms, and is today available on
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A report is a column-oriented grid of fixed-length fields, similar in some ways to a spreadsheet, in that there are columns and rows and a set of headers.
Many operations on reports create a result, which is a non-permanent report with the same structure as a report. In manual functions, there is only one result possible, but runs (scripts) can support up to 17 results, which are referenced the same way as reports but with a negative report-ID. The result created by an operation is "-0", but these can be saved to -1 to -16 inclusive by the "rename" (@rnm) function. This allows runs to perform powerful match, blend and reformat instructions.
While an interpreted language, MAPPER is reasonably quick as the atoms themselves are quite powerful- sort, search, match, count etc are all atoms of the language (which are written in C++ or MASM, depending on platform).
As an alternative, MAPPER may be scripted using Javascript, and the environment contains its own embedded javascript interpreter, with some extensions to reference reports etc as recordset objects, and methods which map onto the atoms of the native scripting language.▼
The typing in MAPPER script is very simple: the types are primitive (integer, real, string) and no constructs or similar complex classes are supported. One-dimensional arrays are supported, arrays of higher dimension would have to simulated in code.
Complex data structures would need to be held in reports or results.
▲As an alternative, MAPPER may be scripted using
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