Jtangform System Rapid Development Electronic Forms Research And Realize

Electric forms an electric kind of paper form and receipt is an important part of information system. Electric form system is a software platform to design electric forms.Using simple and effective platform can improve the design, maintenance and application efficiency of forms. The thesis according to major national research projects, and against the design, data access and multi-kind showing of electric forms, develops the JTangFormSystem a user rapid developing platform.Aim for the flexibility of system, the system is divided to form designer and form engines, form engines including data engine, script engine, design engine and form engine. Form designer is the visual design platform, including data view, representation view, show view and the relation of views, to the forms designer. Data engine integrates the data related to forms, packs the data source, filts the data, including data source, data set and the function package managing the data. Script engine provides script lib for form data validation, data operation and control events. Design engine provides the data model of design view. Form engine defines the rules used in forms persistence and intermediate present, designs the translation interface, translates XML format to other format of showing layer. The JTangForm system applies XML to describe forms and XSD to define forms structure.The thesis researched and solved key technologies include form language representation, form data accessing and binding, and multi-kind showing. To the form language, the thesis use regular tree grammar to describe form grammar and analyze validation algorithm, others use XML Schema to define form grammar of xml format. To the form data access problem, the thesis analyzes the access ways, and provides a data access method. Against the grammar, constructions the form language translation frame.The system realized on Eclipse platform, has easily design, WYSIWYG view and convenient extends features, provides rich form controls and styles, simple database connecting and dataset binding way, multi-output format and more effective data access functions, obtains the beautiful practical application effect from the HUNDSUN etc handling business processes, suites to all kind of company and Institutions integrated to the information system or single rapidly developing forms.