The Research Of Device-Independent Web Sevices Based On XML/XSL

The popularity of computing devices such as Personal Digital Asistants (PDAs) and mobile phones have been increasingly and these devices have been geting more powerful every day. it is still important to adapt the content for these devices in order to provide a satisfactory surfing experience for users. Web services in the near future will not only have to support mobile access,but will also have to deal with other forms of Web access such as voice interfaces.hence,web services will often need to be device-independenct and will have to support different XML Web formats.Although much work has been done on providing mobile access of Web content,the focus has mainly been the adaptation of HTML content to make it viewable on mobile devices that might have memory and scrren-size limitation.Only a few attempts have been made to date to integrate device-independence into the design,implementation and maintenance phases of Web services.This dissertation provides solutions to the problem of designing and implementing interactive,maintainable,device independent Web services.It introduces a novel XML/XSL based design and implementation technique and a development tool suite to support the Web developer.The constructed services can be accessed by a wide range of Web devices such as mobile phones,PDAS with micro HTML browsers,speech-based Web interfaces and traditional HTML browsers.My general thesis is that Web services can effectively be made device-independent if device-independence support is integrated into the Web service design,implementation and maintenance phases. I present an extended model of the traditional Web service life cycle that takes device-independence support into account and describe the Device-Independent Web Engineering (DIWE) framework for engineering device-independent Web services. I introduce the novel concepts of pagespliting; process partitioning.