EE5 Web Appli Environment
Java EE defines a naming environment that allows applications to easily access resources and external information without explicit knowledge of how the external information is named or organized. As servlets are an integral component type of Java EE technology, provision has been made in the Web application deployment descriptor for specifying information allowing a servlet to obtain references to resources and enterprise beans. The deployment elements that contain this information are:
The developer uses these elements to describe certain objects that the Web application requires to be registered in the JNDI namespace in the Web container at runtime. The requirements of the Java EE environment with regard to setting up the environment are described in Chapter 5 of the Java EE Specification. Servlet containers that are part of a Java EE technology-compliant implementation are required to support this syntax. Consult the Java EE 5 Specification for more details. This type of servlet container must support lookups of such objects and calls made to those objects when performed on a thread managed by the servlet container. This type of servlet container should support this behavior when performed on threads created by the developer, but are not currently required to do so. Such a requirement will be added in the next version of this specification. Developers are cautioned that depending on this capability for application-created threads is not recommended, as it is non-portable.
