DefinePK

Abstract

The description of the cross-platform web application providing users with the flexible tool for storage of an object model of arbitrary data domain for the purpose of operational formation of controls loading of multiserver systems on the basis of scalable Markov processes is provided. The three-level client-server architecture is the cornerstone of system. In it loading is distributed between the service provider called by the server and the customers of services called by clients. In operation ORM a framework of Eclipse Link which is reference implementation of the Java Persistence API (JPA) specifications which were included in Java EE is used. Traditional approach with creation of classes’ entities for each specific type of objects isn't suitable for creation of a data model which would allow keeping objects of arbitrary data domain as neither object types, nor their parameters are in advance unknown. The meta model which describes each object the set of attributes inherent in specific object type, and values for these attributes is developed for the solution of this task. Such approach to the description of objects allows storing arbitrary object model, using a limited set of classes’ entities. The layer of business logic of application is realized by means of JSF Managed Beans or bins - Java of classes which are under control of a container framework (Java EE application server). JSF components of the presentation layer can get directly access to fields and methods. The layer of representation is realized by means of Java Server Faces (JSF) - a platform for creation of the user interface of the web applications written in the Java language and library the Prime Faces 5.2 JSF component.