The Material Ration Management System In The PHOSPHORPDM System

PDM system is the short name of Enterprise Product Data Management system. It provides static way to storage management for product data and dynamic way to process management. PHOSPHORPDM system accept the applied idea of coordinate product definition management and it is the third generation of PDM.PHOSPHORPDM product is a software product based on J2EE as its development framework, using EJB(Enterprise Java Bean) technique as its kernel and chiefly using JSP/SERVLET technique.Manufacturing Enterprise Project Data Management System supervises the basic-data that project-planning department produces when they run project-planning business and the data concerns with project-planning. Project-planning is a vital item when we prepare the technical work before manufacturing. It is a bond between the blueprints and the actual production. It is a strongly experiential decision-making process and it is variable as manufacturing circumstance changes. Manufacturing Enterprise Project Data Management Sub-System should consist of project-resource data management, product structure management, process management, project collective statistics, project-planning expert system, material ration management and so on. Project Data Management Sub-System is used as a bridge to set up a manufacturing-company-project-data framework. Consumed material ration refers to the quality standard that measures the quantity of the material that is necessary to produce unit product (or parts, unit workload, unit time) under certain technical circumstances. More precisely, it consists two parts. One is the parts' net weight (the weight of the processing turnoff entity) , another is technical wastage that in the manufacturing course we cannot avoid . Generally speaking, consumed material ration equals technical wastage ration. Material ration management system is a product based on PHOSPHORPDM system and J2EE( the Java? 2 Platform Enterprise Edition) in MVC(Model-View-Controller) designing mode. Our main research aim lies in its design agility, excellent extensibility.Based on the current managerial idea on material ration management, we give chief and deep analysis on the process management, summarizing and anatomizing the problem among them. And further more, we raise macroscopic strategy to solve these problems. In order to implement resolution, we work out extensible material ration structure, establishing a whole set of expanding strategies contraposing to the different kinds of material ration. We also establish blueprints interfacing with current applied modules in PDM and blueprints based on basic service in PDM to implement material ration management. Our ultimate motive is to develop a material-ration-management system based on the idea in the blueprints. Material ration management system is integrated in the PHOSPHORPDM system to supervise material ration. By designing and implementing material ration management system, we validate the feasibility and practicability of developing material-ration-management module based on the primary applied-function modules in PHOSPHORPDM. Project ration stuff will frequently use expressions to compute when they do everyday consumed material ration work. So we design a set of flexible expression-management-sub-system as a part of material ration management system. Expression management-sub-system mainly deals with various expressions and properties of operation object that every parameter in the expressions corresponds. In the practical process of computation, we run ration compute after expressions and some parameters( other parameters can be find out automatically by system within the database) are named for project ration stuff to compute .The writing of entity bean and the corresponding configuration files has 70 percentage workload of the whole coding. In order to speed up the coding efficiency, we exploit the auto-coding tool based on introspection service in PHOSPHORPDM. Auto-coding tool can complete the creation of all the entity beans, configuration files, S...