{"id":154636,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/resolving-packaging-mismatch-2\/"},"modified":"2018-10-16T20:22:04","modified_gmt":"2018-10-17T03:22:04","slug":"resolving-packaging-mismatch-2","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/resolving-packaging-mismatch-2\/","title":{"rendered":"Resolving packaging mismatch"},"content":{"rendered":"<div class=\"asset-content\">\n<p>To integrate a software component into a system, the component must interact properly with the system&#8217;s other components. Unfortunately, the decisions about how a component is to interact with other components are typically committed long before the moment of integration and are difficult to change. As a result, system integrators often face mismatches between their system&#8217;s interaction commitments and those of a component to be integrated. How a component interacts with other components is called its packaging; hence these mismatches are called packaging mismatches. Packaging mismatches are typically resolved by introducing so-called glue code, which is costly to produce and maintain. In this dissertation, I introduce a software development method, called Flexible Packaging, which allows a component developer to defer many decisions about component interaction until system integration. Using this method, a system integrator first selects a component, called a ware, with few interaction commitments and then writes a packaging description, which captures how the ware is to interact with other components. Given a ware and a packaging description, the Flexible Packaging system automatically produces the source code, non-code artifacts, and construction and installation steps needed for the component to exhibit the described form of interaction. By writing a packaging description, the system integrator tailors the component&#8217;s interaction to the system at hand, and the component can be readily integrated. I have validated the feasibility of the Flexible Packaging method and its tools with several case studies, which involve a wide range of interaction: COM servers (ActiveX controls); COM clients; Netscape plug-ins; Windows applications with GUIs; ODBC-based database accessors; filters; CGI scripts; and TCP socket clients.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>To integrate a software component into a system, the component must interact properly with the system&#8217;s other components. Unfortunately, the decisions about how a component is to interact with other components are typically committed long before the moment of integration and are difficult to change. As a result, system integrators often face mismatches between their 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