NGIS WebServerWEB-Server architectureThe cartographical web-server is created in the form of the servlet with usage of language Java. Technologies Java are multiplatform, it means, that the web-server will work on all popular operating systems (Windows, Linux, Solaris, Macintosh, etc.). Following web-server support technology JAVA:Apache+Tomcat + JRunMicrosoft IIS+Tomcat+JRunIBM WebSphereLotus Domino ServerSun J2EE etc.Specific feature of the servlet is that it does not demand creation of new processes at each new query. Queries are run in a parallel way within the limits of one process on a server and on the productivity surpass CGI, and FAST-CGI applications. For processing each query new process starts in traditional CGI - programs. Using servlets virtual machine Java starts each process in light process. For traditional CGI programs at simultaneous receiving N queries in memory loads N copies of programs. For servlets in this case to be organized N threads, but all of them use one copy of a servlet class with the loaded cartographical data and parameters. In case CGI after the termination processing of query process is completed. In case of the servlet after the termination processing of query, servlet remains in memory, therefore can store any data in periods when clients request and provides an instant answer.The given unique architecture differs by big speed operation of cartographical web-server, saving memory of a server and small memory necessary for each session of the client that allows to manipulate a plenty of sessions.Main features" Written with usage Java(JDK 1.3)" Support MultiLayer map" Multiplatform (Windows, Linux, MacOS, Solaris)" Fast draw map." Support of all *.tab, *.map, *.dat formats." Support map R-Tree index." ZoomIn/ZoomOut/Pan map tools." Drawing main objects of MapInfo." Support of different style lines." Save map WorkSpace parameters." Drawing the map labels. " Small size and compa
JDirectoryChooser Java Bean 1.0.0
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