Caching the home interface

Add the cacheHomes="true" parameter to the <utilobject/> task to have the utility objects cache the homes (you no longer need an EJBHomeFactory!):

<utilobject cacheHomes="true"/>

Examples how to lookup the home interface using the utility object (it will narrow if needed, and uses the COMP name or JNDI name):

EmployeeManager employeeManager = EmployeeManagerUtil.getHome().create();
Properties jndiEnvProps = ... ;
CompanyHome companyHome = CompanyUtil.getLocalHome(jndiEnvProps);

GUID Generator

Need an extremely reliable key generator? Add the includeGUID="true" parameter to the <utilobject/> task to have a key generator that features:

• unique to the millisecond
• unique to the server IP address
• unique to the object hashcode
• unique to a SecureRandom
• String, 32 chars
• very performant
• EJB 2.0 spec compliant

<utilobject includeGUID="true"/>

To generate a unique key:

String id = SomeBeanUtil.generateGUID(this);

Use a dot to seperate namespace and element

To avoid getting Sun JavaDoc (JDK 1.4) warnings about unknown tags ("warning - @ejb:interface-method is an unknown tag"), replace the : with a . (JavaDoc will ignore these tags).

Entity Beans Best Practices

• Try to avoid compound primary keys.
• Always set the Value Object in ejbPostCreate(..), so that CMR fields are assigned correctly.

Session Beans Best Practices

• Use the Session Facade pattern for safer data management.