property (with attributes)

zero or more 

Specifies a property, which has a name and a value. 

directory

domain-dir/generated/jsp/j2ee-apps/app-name/app-name_war

Specifies the absolute or relative pathname of the directory into which individual session files are written. A relative path is relative to the temporary work directory for this web module. 

Applicable only if the persistence-type attribute of the parent session-manager element is file.

persistenceScope

session

Specifies how much of the session state is stored. Allowed values are as follows: 

• session - The entire session state is stored every time. This mode provides the best guarantee that your session data is correctly stored for any distributable web or SIP module.

• modified-session - The entire session state is stored if it has been modified. A session is considered to have been modified if HttpSession.setAttribute() or HttpSession.removeAttribute() was called. You must guarantee that setAttribute() is called every time an attribute is changed. This is not a Java EE specification requirement, but it is required for this mode to work properly. For web applications only.

• modified-attribute - Only modified session attributes are stored. For this mode to work properly, you must follow some guidelines, which are explained immediately following this table. For web applications only.

Applicable only if the persistence-type attribute of the parent session-manager element is replicated.