Sun Java Enterprise System 2005Q4 Technical Overview

System Service Components

A number of Java ES components provide the main services that support distributed software solutions. These system services include portal services, communication and collaboration services, identity and security services, web container services, and J2EE application services.

The system service components that provide these distributed services, and the services they provide are briefly described in the following table. Each system service component is a multi-threaded server process capable of supporting a large number of clients. For more details on any component, see System Service Component Descriptions

Table 1–1 Java ES System Service Components


System Services Provided 

Sun Java System Access Manager

Provides access management and digital identity administration services. Access management services include authentication (including single sign-on) and role-based authorization for access to applications and/or services. Administration services include centralized administration of individual user accounts, roles, groups, and policies.

Sun Java System Application Server

Provides J2EE container services for Enterprise JavaBeansTM (EJB) components, such as session beans, entity beans, and message-driven beans. The container provides the infrastructure services needed for tightly coupled distributed components to interact, making the Application Server a platform for the development and execution of e-commerce applications and web services. The Application Server also provides web container services.

Sun Java System Calendar Server

Provides calendar and scheduling services to end users and groups of end users. Calendar Server includes a browser-based client that interacts with the server. 

Sun Java System Directory Server

Provides a central repository for storing and managing intranet and Internet information such as identity profiles (employees, customers, suppliers, and so forth), user credentials (public key certificates, passwords, and pin numbers), access privileges, application resource information, and network resource information. 

Sun Java System Instant Messaging

Provides secure, real-time communication between end users, such as instant messaging (chat), conferencing, alerts, news, polls, and file transfer. The service includes a presence manager that tells users who is currently on line and includes a browser-based client that interacts with the server. 

Sun Java System Message Queue

Provides reliable, asynchronous messaging between loosely coupled distributed components and applications. Message Queue implements the Java Message Service (JMS) API specification and adds enterprise features such as security, scalability, and remote administration.

Sun Java System Messaging Server

Provides secure, reliable, high-capacity store-and-forward messaging that supports email, fax, pager, voice, and video. Messaging Server can concurrently access multiple message stores and provides content filtering to help reject unsolicited email and prevent virus attacks. 

Sun Java System Portal Server

Provides key portal services, such as content aggregation and personalization, to browser-based clients accessing business applications or services. Portal Server also provides a configurable search engine. 

Sun Java System Web Server

Provides J2EETM web container services for Java web components, such as Java Servlet and JavaServer PagesTM (JSPTM) components. Web Server also supports other web application technologies for delivering static and dynamic web content, such as CGI scripts and sun Java System Active Server Pages.

Sun Java System Service Registry 

Provides a registry and repository to support web Service-Oriented Architeture (SOA) applications. Service Registry implements industry standards for registering and discovering web services as well as for managing the associated information and facts, artifacts, such as XMLSchema, business process rules, access control, version control, and so forth.