Java Reference
In-Depth Information
The assembler or deployer can edit the deployment descriptor directly or can use tools that
correctly add XML tags according to interactive selections.
A software developer performs the following tasks to deliver an EAR file containing the
Java EE application:
• Assembles EJB JAR and WAR files created in the previous phases into a Java EE
application (EAR) file
• Specifies the deployment descriptor for the Java EE application (optional)
• Verifies that the contents of the EAR file are well formed and comply with the Java
EE specification
Application Deployer and Administrator
The application deployer and administrator is the company or person who configures and
deploys application clients, web applications, Enterprise JavaBeans components, and Java
EE applications, administers the computing and networking infrastructure where Java EE
components and applications run, and oversees the runtime environment. Duties include
setting transaction controls and security attributes and specifying connections to data-
bases.
During configuration, the deployer follows instructions supplied by the application com-
ponent provider to resolve external dependencies, specify security settings, and assign
transaction attributes. During installation, the deployer moves the application components
to the server and generates the container-specific classes and interfaces.
A deployer or system administrator performs the following tasks to install and configure
a Java EE application or components:
• Configures the Java EE application or components for the operational environment
• Verifies that the contents of the EAR, JAR, and/or WAR files are well formed and
comply with the Java EE specification
• Deploys (installs) the Java EE application or components into the Java EE server
Java EE 6 APIs
Figure 1-7
shows the relationships among the Java EE containers.
