Environment properties

EJB 1.1 allows environment properties to be accessed using JNDI, and the EJBContext.getEnvironment method is now deprecated. Environment properties can also contain values of types other than String.

Environment properties used within a bean must be cataloged in the bean’s deployment descriptor. For EJB 1.1 components installed in EAServer, you configure environment properties on the Environment tab in the Component Properties dialog box. See “Configuring environment properties”

You must call the JNDI Context.lookup method to access environment properties. To locate the naming context, create a javax.naming.InitialContext object for java:comp/env. In this example, the application retrieves the value of the environment property maxExemptions and uses that value to determine an outcome:

Context initContext = new InitialCopntext();
Context myEnv = 
   (Context)initContext.lookup(“java:comp/env”);

// Get the maximum number of tax exemptions
Integer max=(Integer)myEnv.lookup(“maxExemptions”);

// Get the minimum number of tax exemptions 
Integer min = (Integer)myEnv.lookup(“minExemptions”);

// Use these properties to customize the business logic
if (numberOfExemptions > max.intValue() ||
   (numberOfExemptions < min.intValue())
    throw new InvalidNumberOfExemptionsException();