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Implementation of Non-Java Based Interfaces to Embed Existing Models in Spatial Decision Support Systems - Case Study: Integration of Ms Excel-Models in Iwegs

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Executive Summary

This paper shows the programming and usage of computer based interfaces to embed models in modern SDSSs. The special focus is on the development and implementation of non-Java based interfaces which couple already existing MicroSoft (MS) Excel-based models to individual designed SDSSs. To access MS Excel files within these developed systems, Java API POI-HSSF (by Jakarta) is used. HSSF provides a way to create, modify, read and write .xls-spreadsheets. Besides that, this library supports cell-functions and -formulas. Based on the state-of-the-art software development and design approach MVC (Model-View-Controller), the interfaces are developed as processors.

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