http://docs.openlinksw.com/virtuoso/runtimehosting.html Runtime Hosting OpenLink Virtuoso Universal Server: Documentation virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com 2009-11-16T14:26:59Z OpenLink Software Documentation Team http://docs.openlinksw.com/virtuoso/../images/misc/logo.jpg http://docs.openlinksw.com/virtuoso/rthactivation.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Runtime Environments 2009-11-16T14:26:59Z Runtime Environments The Virtuoso server in its standard build is a single executable. To allow for external customizations based on VSEs the Virtuoso server engine becomes a callable library, the main function is re-written to incorporate other libraries and a new executable is created. For example, a Virtuoso server that contains PHP support under Windows consists of: which replaces the usual 7M virtuoso-odbc-t.exe. virtuoso.odbc-php-t.exe is then executed in the usual way. The Linux counterpart would be an 8M virtuoso-odbc-php-t binary. http://docs.openlinksw.com/virtuoso/rthclr.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com CLR, .Net & ASPX Host 2009-11-16T14:26:59Z CLR, .Net & ASPX Host The Common Language Runtime (CLR) is the foundation upon which the Microsoft® .NET strategy is built. The CLR provides an execution environment that manages running code and provides services that make software development easier. These services include automatic memory management, cross-language integration, interoperability with existing code and systems, simplified deployment, and a fine grained security system. The .NET platform also brings with it a new programming language called C#. It is very similar to Java and allows developers to make full use of all features available on the .NET runtime. The CLR can run a variety of different types of applications, such as: console applications, Web server scripts, traditional Win32-based applications, and more. The CLR provides a language specification for compilers to generate classes and code that can interoperate with other programming languages (The Common Language Specification: CLS) . Any API that is written using a CLS provider language can be used by any language that is a CLS consumer. Compilers generate code in a format called Common Intermediate Language (CIL) which is an intermediate representation of a compiled program and is easy to compile to native code or be compiled using Just-in-Time (JIT) engines. The restrictions placed by the runtime on the CIL byte codes ensures good potential for code optimization by the JIT compiler. The runtime environment provides garbage collection, threading and a comprehensive class library. All these things make code development easier and more appealing by allowing a mixture of languages to be collaborating to produce results, all contained within a managed sandbox to prevent bugs from breaking other running programs. http://docs.openlinksw.com/virtuoso/rthclrmono.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com CLR & Mono 2009-11-16T14:26:59Z CLR & Mono The Mono Project is an open development initiative sponsored by Ximian that is working to develop an open source, Unix version of the Microsoft .NET development and run time platform. Its objective is to enable Unix developers to build and deploy cross-platform .NET Applications. Likewise, this expands the capabilities of Windows programmers, this project opens .NET to non Windows platforms. Mono will implement various Microsoft technologies that have now been submitted to the ECMA for standardization. The Goal is similar to that of Java, implementing a common virtual machine on multiple operating systems, however you are not restricted to one language. Like .NET, Mono contains a Common Language Infrastructure (CLI) virtual, machine that contains a class loader, Just-in-time compiler, and a garbage collecting runtime; a class library that can work with any language which works on the CLR; a compiler for the C# language. http://docs.openlinksw.com/virtuoso/javaextvm.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Embedded Java VM API 2009-11-16T14:26:59Z Embedded Java VM API The Java VM is an embedded system within Virtuoso that allows the calling of class Java methods and getting class properties. It uses the JAVA JNI API to interact with the JAVA VM. http://docs.openlinksw.com/virtuoso/cinterface.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Virtuoso Server Extension Interface (VSEI) (C Interface) 2009-11-16T14:26:59Z Virtuoso Server Extension Interface (VSEI) (C Interface) http://docs.openlinksw.com/virtuoso/vseplugins.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com VSEI Plugins 2009-11-16T14:26:59Z VSEI Plugins Virtuoso functionality can be enhanced through external libraries by loading shared objects or DLLs. The new functions are written in a language of the developer's choice and compiled to produce a shared library appropriate to the operating system. The path to the shared library must be declared in the Virtuoso INI file and the server restarted before it can be used. The Virtuoso INI file uses a [Plugins] configuration section for listing shared libraries for the server to load upon startup. The layout is as follows: Virtuoso reads the Load1, Load2, ... LoadN lines from the [Plugins] section and attaches them according to their type.