Examples of oracle.toplink.essentials.internal.sessions.AbstractSession

oracle.toplink.essentials.internal.sessions.AbstractSession

Implementation of oracle.toplink.essentials.sessions.Session The public interface should be used by public API and testing, the implementation should be used internally. @see oracle.toplink.essentials.sessions.Session

Purpose: Define the interface and common protocol of a TopLink compliant session.

Description: The session is the primary interface into TopLink, the application should do all of its reading and writing of objects through the session. The session also manages transactions and units of work. Normally the session is passed and used by the application controler objects. Controler objects normally sit behind the GUI and perform the buiness processes required for the application, they should perform all explict database access and database access should be avoided from the domain object model. Do not use a globally accessable session instance, doing so does not allow for multiple sessions. Multiple sessions may required when performing things like data migration or multiple database access, as well the unit of work feature requires the usage of multiple session instances. Although session is abstract, any users of its subclasses should only cast the variables to Session to allow usage of any of its subclasses.

Responsibilities:

Connecting/disconnecting.
Reading and writing objects.
Transaction and unit of work support.
Identity maps and caching.

@see DatabaseSession

    }


    public static String getSessionPropertyValueLogDebug(String name, AbstractSession session) {
        String value = null;
        while(value == null && session != null) {
            AbstractSession parent = session.getParent();
            // Don't use System properties as default unless session has no parent.
            // Motivation: look in all the recursive parents' properties before looking in System properties.
            value = Prop.getPropertyValueToApply(name, session.getProperties(), session, parent == null);
            session = parent;
        }

Examples of oracle.toplink.essentials.internal.sessions.AbstractSession

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