Mercurial > hg > release > thermostat-1.2
view storage/core/src/main/java/com/redhat/thermostat/storage/query/UnaryExpression.java @ 1660:c6ae78b6f3ac
[Thermostat 1.2] Update copyright year to 2015
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2015-March/013127.html
PR2273
author | Severin Gehwolf <sgehwolf@redhat.com> |
---|---|
date | Wed, 11 Mar 2015 15:07:27 +0100 |
parents | 0f2fbbea20bf |
children |
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/* * Copyright 2012-2015 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat 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 2, or (at your * option) any later version. * * Thermostat 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 Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.storage.query; /** * An {@link Expression} that has an operator and one operand. * @param <S> - type of {@link Expression} used for the operand * @param <T> - type of {@link UnaryOperator} used for the operator */ abstract class UnaryExpression<S extends Expression, T extends UnaryOperator> implements Expression { private S operand; private T operator; /** * Constructs a {@link UnaryExpression} given an operand and an operator. * <p> * This constructor exists mainly for JSON serialization, use methods in * {@link ExpressionFactory} instead of this constructor. * @param operand - operand for this expression * @param operator - operator for this expression */ UnaryExpression(S operand, T operator) { this.operand = operand; this.operator = operator; } /** * @return the operand for this expression */ public S getOperand() { return operand; } /** * @return the operator for this expression */ public T getOperator() { return operator; } @Override public boolean equals(Object obj) { boolean result = false; if (obj != null && obj instanceof UnaryExpression) { UnaryExpression<?, ?> otherExpr = (UnaryExpression<?, ?>) obj; result = operand.equals(otherExpr.operand) && operator.equals(otherExpr.operator); } return result; } @Override public int hashCode() { return operand.hashCode() + operator.hashCode(); } @Override public String toString() { StringBuffer buf = new StringBuffer(); buf.append("( "); buf.append(operator.toString()); buf.append(" "); buf.append(operand.toString()); buf.append(" )"); return buf.toString(); } }