Examples of org.eclipse.persistence.internal.sessions.DatabaseSessionImpl

Package org.eclipse.persistence.internal.sessions

Examples of org.eclipse.persistence.internal.sessions.DatabaseSessionImpl

org.eclipse.persistence.internal.sessions.DatabaseSessionImpl
Implementation of org.eclipse.persistence.sessions.DatabaseSession The public interface should be used. @see org.eclipse.persistence.sessions.DatabaseSession
Purpose: Define the implementation for a single user/single connection EclipseLink session.
Description: The session is the primary interface into EclipseLink, the application should do all of its reading and writing of objects through the session. The session also manages transactions and units of work. The database session is intended for usage in two-tier client-server applications. Although it could be used in a server situation, it is limited to only having a single database connection and only allows a single open database transaction.
Responsibilities:
- Connecting/disconnecting.
- Reading and writing objects.
- Transaction and unit of work support.
- Identity maps and caching.

        } else {
            primaryProject = new Project();// Build a session from an empty project
        }


        prepareProjectLogin(primaryProject, login);
        DatabaseSessionImpl sessionToReturn = getSession(sessionConfig, primaryProject);


        // Append descriptors from all subsequent project.xml and project classes 
        // to the mainProject  
        if (sessionConfig.getAdditionalProjects() != null) {
            Enumeration additionalProjects = sessionConfig.getAdditionalProjects().elements();

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     * Wrapped by the getSession() call, therefore, config can't be null at this
     * point.
     */
    protected AbstractSession buildDatabaseSessionConfig(DatabaseSessionConfig databaseSessionConfig) {
        // Create a new database session (null means use login from deployment xml if there is one)
        DatabaseSessionImpl databaseSession = createSession(databaseSessionConfig, null);


        // Login - may overwrite the previous login (expected behavior)
        Login login = buildLogin(databaseSessionConfig.getLoginConfig());
        if (login != null) {
            databaseSession.setLogin(login);
        }


        // Common processing since ServerSessions inherit from DatabaseSession
        processDatabaseSessionConfig(databaseSessionConfig, databaseSession);

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        } else {
            primaryProject = new Project();// Build a session from an empty project
        }


        prepareProjectLogin(primaryProject, login);
        DatabaseSessionImpl sessionToReturn = getSession(sessionConfig, primaryProject);


        // Append descriptors from all subsequent project.xml and project classes 
        // to the mainProject  
        if (sessionConfig.getAdditionalProjects() != null) {
            Enumeration additionalProjects = sessionConfig.getAdditionalProjects().elements();

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     * This returns an implementor of the DatabaseSession interface, which can be used to login
     * and add descriptors from other projects.  The Session interface however should be used for
     * reading and writing once connected for complete portability.
     */
    public DatabaseSession createDatabaseSession() {
        return new DatabaseSessionImpl(this);
    }

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                    // keep only non server session properties - the rest will
                    // be either cached in the server session or ignored
                    properties = splitProperties[0];
                    Map serverSessionProperties = splitProperties[1];
                    // the call to setupImpl.deploy() finishes the session creation
                    DatabaseSessionImpl tempSession = setupImpl.deploy(realLoader, serverSessionProperties);
                    // discard all but non server session properties from server
                    // session properties.
                    Map tempProperties = EntityManagerFactoryProvider.keepSpecifiedProperties(tempSession.getProperties(), supportedNonServerSessionProperties);
                    // properties override server session properties
                    Map propertiesToProcess = EntityManagerFactoryProvider.mergeMaps(properties, tempProperties);
                    processProperties(propertiesToProcess);
                    this.session = tempSession;
                }

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        return createEntityManagerImpl(properties);
    }


    protected EntityManagerImpl createEntityManagerImpl(Map properties) {
        verifyOpen();
        DatabaseSessionImpl session = getDatabaseSession();
        if (!session.isLoggedIn()) {
            // PERF: Avoid synchronization.
            synchronized (session) {
                // DCL ok as isLoggedIn is volatile boolean, set after login is
                // complete.
                if (!session.isLoggedIn()) {
                    session.login();
                }
            }
        }
        return new EntityManagerImpl(this, properties);
    }

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     * This returns an implementor of the DatabaseSession interface, which can be used to login
     * and add descriptors from other projects.  The Session interface however should be used for
     * reading and writing once connected for complete portability.
     */
    public DatabaseSession createDatabaseSession() {
        return new DatabaseSessionImpl(this);
    }

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     * This returns an implementor of the DatabaseSession interface, which can be used to login
     * and add descriptors from other projects.  The Session interface however should be used for
     * reading and writing once connected for complete portability.
     */
    public DatabaseSession createDatabaseSession() {
        return new DatabaseSessionImpl(this);
    }

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     * This returns an implementor of the DatabaseSession interface, which can be used to login
     * and add descriptors from other projects.  The Session interface however should be used for
     * reading and writing once connected for complete portability.
     */
    public DatabaseSession createDatabaseSession() {
        return new DatabaseSessionImpl(this);
    }

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     * Wrapped by the getSession() call, therefore, config can't be null at this
     * point.
     */
    protected AbstractSession buildDatabaseSessionConfig(DatabaseSessionConfig databaseSessionConfig) {
        // Create a new database session (null means use login from deployment xml if there is one)
        DatabaseSessionImpl databaseSession = createSession(databaseSessionConfig, null);


        // Login - may overwrite the previous login (expected behavior)
        Login login = buildLogin(databaseSessionConfig.getLoginConfig());
        if (login != null) {
            databaseSession.setLogin(login);
        }


        // Common processing since ServerSessions inherit from DatabaseSession
        processDatabaseSessionConfig(databaseSessionConfig, databaseSession);

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