Metadata driving based method for realizing dynamic form

Abstract

The invention relates to a metadata driving based design method for realizing a dynamic form, comprising the following steps of firstly, classifying unit grids in a form, and establishing a form function set corresponding to each type of unit grid; secondly, describing a rule through the metadata, describing a unit grid structure, and forming a metadata database; thirdly, acquiring form metadata information from the metadata database through a metadata engine, and dynamically loading the metadata to the form; and fourthly, selecting the form function set, and dynamically producing a user form. The invention packages relatively fixed function operation in the user form by adopting an behavior control flow of a program; while the form structure, each data entry mode in the form and the like which have different correlative relationships with different function operations are described by adopting the metadata. Therefore, relatively stable parts and variable parts in a form function module are definitely separated, and the variable parts such as the form structure and the like are described by adopting the metadata, thereby enhancing the controllability of the form structure.

Description

technical field [0001] The invention relates to a method for realizing a dynamic form driven by metadata, and belongs to the technical field of database system applications. Background technique [0002] With the deepening of informatization construction, the requirements of informatization systems are becoming more and more complex. The use and display of user data must be able to meet the changes in requirements and be customized by users. The existing form technologies include the following two types: [0003] 1. Form development based on crystal report [0004] The main principle is that the visualization tools provided by Crystal Reports first define the form structure, and then users can customize some operation functions of the form based on this structure. Its disadvantages are: the structure of the form is fixed, and the change of the structure needs to be redeveloped; the function of the form is fixed, and the change of the function will also bring new developmen...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the structure of the form is fixed, and the change of the structure needs to be redeveloped; the function of the form is fixed, and the change of the function will also bring new development work; it cannot provide the expansion of complex functions, such as completing the drawing of the trend graph in the form, adding Multiple attachments, etc.; unable to provide diverse data display functions

Its disadvantages are: the developed components need to be embedded in all Excel, and it is very troublesome to modify and deploy; users must have a good understanding of the database structure; data modification in Excel needs to be synchronized with the database

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