/* This file is part of VoltDB. * Copyright (C) 2008-2010 VoltDB L.L.C. * * VoltDB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * VoltDB is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with VoltDB. If not, see <http://www.gnu.org/licenses/>. */ package org.voltdb.expressions; import org.voltdb.types.ExpressionType; /** * Base class for Expression types that represent a value. * This does nothing, but makes examining expression trees easier in some ways. * */ public abstract class AbstractValueExpression extends AbstractExpression { public AbstractValueExpression() { // This is needed for serialization } public AbstractValueExpression(ExpressionType type) { super(type); } public AbstractValueExpression(ExpressionType type, AbstractExpression left, AbstractExpression right) { super(type, right, left); } }