Performance modeling of the SPECjAppServer business case using LQN templates

Enterprise Java Beans (EJB) are one such tool that developers can choose to help them simplify the technical aspects, allowing them to focus more on the business requirements. However, as the enterprise solution is developed and constrained, there are several factors that need to be determined but are unknown at this early stage of development. Modeling these systems to predict the unknown is a possible solution that can save both time and money. However. as hardware and architectural aspects change over time, the model may need to change as well, which may be a very difficult task in the case of large systems. This paper presents the use of EJB templates of Layered Queueing Networks to handle the change for both the software and architecture of the SPECjAppServer Business Case. In this work, two LQN models have been developed and their results have been discussed.

Performance modeling of the SPECjAppServer business case using LQN templates

Enterprise Java Beans (EJB) are one such tool that developers can choose to help them simplify the technical aspects, allowing them to focus more on the business requirements. However, as the enterprise solution is developed and constrained, there are several factors that need to be determined but are unknown at this early stage of development. Modeling these systems to predict the unknown is a possible solution that can save both time and money. However. as hardware and architectural aspects change over time, the model may need to change as well, which may be a very difficult task in the case of large systems. This paper presents the use of EJB templates of Layered Queueing Networks to handle the change for both the software and architecture of the SPECjAppServer Business Case. In this work, two LQN models have been developed and their results have been discussed.

Enterprise Java Beans with ReactiveX.

This publication is on the automation of persistence, with the example of a Legacy solution, in the form of Enterprise Java Beans. While Java EE and EJB’s are depreciated. They are bridged to the present models of SaaS and serverless computing, through the introduction of two new stateful beans, StreamBean and EventBean, for functional, reactive and Cloud based automated persistence with the ability to implement any design pattern template with the Bean.This paper is on the transition from imperative programming in SQL to a NoSQL based serverless design with automation of the persistence layer in the cloud.

Technologies of Cross-Program Interfaces

Основное внимание в исследовании уделяется межпрограммным интерфейсам. Концепция управления бизнес-процессами (УБП) сильно продвинулась вперед. Это промежуточное программное обеспечение автоматизации работы бизнес-аналитиков и формализации процесса интеграции гетерогенных приложений в информационную инфраструктуру предприятия. Он акцентирован на основных задачах и не должен зависеть от используемой технологии - можно использовать CORBA, COM / DCOM, XML или Enterprise Java Beans для построения базы данных. Главные цели исследования - добиться уменьшения постоянной модернизации межпрограммных интерфейсов и уменьшения доли общего бюджета информационной системы. Наша качественная методология включает, во-первых, анализ научных статей, во-вторых, создание математической модели и, наконец, проведение экспериментов. Мы пришли к выводу, что развитая технология (межпрограммные интерфейсы) необходима для интеграции гетерогенных приложений на уровне бизнес-логики, что обеспечивает простой и гибкий способ интеграции приложений в единую программную среду.

Analysis of ANSI RBAC Support in EJB

This paper analyzes access control mechanisms of the Enterprise Java Beans (EJB) architecture and defines a configuration of the EJB protection system in a more precise and less ambiguous language than the EJB 3.0 standard. Using this configuration, the authors suggest an algorithm that formally specifies the semantics of authorization decisions in EJB. The level of support is analyzed for the American National Standard Institute’s (ANSI) specification of Role-Based Access Control (RBAC) components and functional specification in EJB. The results indicate that the EJB specification falls short of supporting even Core ANSI RBAC. EJB extensions dependent on the operational environment are required in order to support ANSI RBAC required components. Other vendor-specific extensions are necessary to support ANSI RBAC optional components. Fundamental limitations exist, however, due to the impracticality of some aspects of the ANSI RBAC standard itself. This paper sets up a framework for assessing implementations of ANSI RBAC for EJB systems.