/** * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library 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 Lesser General Public License for more * details. */ package com.liferay.dynamic.data.mapping.expression.model; /** * @author Marcellus Tavares */ public abstract class ExpressionVisitor<T> { public T visit(AndExpression andExpression) { return null; } public T visit(ArithmeticExpression arithmeticExpression) { return null; } public T visit(ComparisonExpression comparisonExpression) { return null; } public T visit(FunctionCallExpression functionCallExpression) { return null; } public T visit(MinusExpression minusExpression) { return null; } public T visit(NotExpression notExpression) { return null; } public T visit(OrExpression orExpression) { return null; } public T visit(Parenthesis parenthesis) { return null; } public T visit(Term term) { return null; } }