jodd-db/src/main/java/jodd/db/DbQueryBase.java
protected void initSession(final DbSession session) {
		if (session != null) {
			this.session = session;
			return;
		}

		final DbSessionProvider dbSessionProvider = dbOom.sessionProvider();

		this.session = dbSessionProvider.getDbSession();
	}
protected void initSession(final DbSession session) {
		if (session != null) {
			this.session = session;
			return;
		}

		final DbSessionProvider dbSessionProvider = dbOom.sessionProvider();

		this.session = dbSessionProvider.getDbSession();
	}
Initializes session. When not specified (i.e. is <code>null</code>),
session is fetched from session provider.