| 摘要 |
<p>A system is provided for allowing access to a library of spatial algorithms and access to other common resources for supporting the development and implementation of multiple location based services applications. In one embodiment, a multilayered architecture (800) is employed. The architecture (800) includes an applications layer (802), a middle ware layer (804) and a core class libraries layer (806). The application in the applications layer (802) can call or access the components in the middleware layer (804) to implement specific functions, and the middleware components can access libraries of the core class layer (806) to implement such functions. Common resources can thus be used to support multiple applications, even though those applications may have different objectives and different requirements regarding location data.</p> |
