gistfile1.java

public void setSessionMode(String sessionMode) {
    String mode = sessionMode;
    if (mode == null) {
        throw new IllegalArgumentException("sessionMode argument cannot be null.");
    }
    mode = sessionMode.toLowerCase();
    if (!HTTP_SESSION_MODE.equals(mode) && !NATIVE_SESSION_MODE.equals(mode)) {
        String msg = "Invalid sessionMode [" + sessionMode + "].  Allowed values are " +
                "public static final String constants in the " + getClass().getName() + " class: '"
                + HTTP_SESSION_MODE + "' or '" + NATIVE_SESSION_MODE + "', with '" +
                HTTP_SESSION_MODE + "' being the default.";
        throw new IllegalArgumentException(msg);
    }
    boolean recreate = this.sessionMode == null || !this.sessionMode.equals(mode);
    this.sessionMode = mode;
    if (recreate) {
        LifecycleUtils.destroy(getSessionManager());
        SessionManager sessionManager = createSessionManager(mode);
        setSessionManager(sessionManager);
    }
}

/**
 * @since 1.0
 */
public boolean isHttpSessionMode() {
    return this.sessionMode == null || this.sessionMode.equals(HTTP_SESSION_MODE);
}

protected SessionManager createSessionManager(String sessionMode) {
    if (sessionMode == null || sessionMode.equalsIgnoreCase(HTTP_SESSION_MODE)) {
        if (log.isInfoEnabled()) {
            log.info(HTTP_SESSION_MODE + " mode - enabling ServletContainerSessionManager (HTTP-only Sessions)");
        }
        return new ServletContainerSessionManager();
    } else {
        if (log.isInfoEnabled()) {
            log.info(NATIVE_SESSION_MODE + " mode - enabling DefaultWebSessionManager (HTTP + heterogeneous-client sessions)");
        }
        return new DefaultWebSessionManager();
    }
}