The bean provider declares all the bean environment entries in the deployment descriptor via the env-entry element. The deployer can set or modify the values of the environment entries.
A bean accesses its environment entries with a code similar to the following:
InitialContext ictx = new InitialContext();
Context myenv = ictx.lookup("java:comp/env");
Integer min = (Integer) myenv.lookup("minvalue");
Integer max = (Integer) myenv.lookup("maxvalue"); |
In the standard deployment descriptor, the declaration of these variables are as follows:
<env-entry> <env-entry-name>minvalue</env-entry-name> <env-entry-type>java.lang.Integer</env-entry-type> <env-entry-value>12</env-entry-value> </env-entry> <env-entry> <env-entry-name>maxvalue</env-entry-name> <env-entry-type>java.lang.Integer</env-entry-type> <env-entry-value>120</env-entry-value> </env-entry> |