Java-based query driven simulation environment

Rajesh S. Nair, John A. Miller, Zhiwei Zhang
<span title="">1996</span> <i title="ACM Press"> Proceedings of the 28th conference on Winter simulation - WSC &#39;96 </i> &nbsp;
The concept of Web-based simulation can be finally realized using Java. We have used Java to create a powerful simulation modeling library \vhich is based on the process interaction paradignl. Java threads make it easy for us to inlplement each process (or active entity) as a thread. Our library, JSIM, supports both silnulation and aninlation thus rendering the model developer's job easier. An important component of our approach is that we integrate our Java Simulator with a Database Management
more &raquo; ... Systenl (DBMS). The conceptual basis for this integration is an environnlent based on Query Driven Simulation, which allows sinlulation analysts to study the perfornlance of systenls simply by querying a database. Simulation inputs and outputs are stored in databases, and siIllulation Ill0dels can be launched as a part of query processing. This integration also resolves a security restriction problenl \vhich Java imposes. Most browsers (e.g., Netscape Navigator) restrict Java applets frOIll writing into a file \vhich nlay be necessary to Illake sinlulation results available to the user. Our approach bypasses this problem by writing into a database. Databases are 11luch less of a security concern since they already have substantial authorization mechanisIlls.
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