public void setJoint(boolean isJoint) {
		if (this.isJoint == isJoint)
			return;
		if (isJoint)
		{
			this.isJoint = true;
		} else
		{
			try
			{
				this.isJoint = false;
				this.deleteArray("aWaitingId");
				this.deleteArray("aAcceptedId");
				this.deleteArray("aRejectedId");
			} catch (SQLException e)
			{
				e.printStackTrace();
			}

		}
	}