001    /*
002     * Copyright (c) 2005 Einar Pehrson <einar@pehrson.nu>.
003     *
004     * This file is part of
005     * CleanSheets - a spreadsheet application for the Java platform.
006     *
007     * CleanSheets is free software; you can redistribute it and/or modify
008     * it under the terms of the GNU General Public License as published by
009     * the Free Software Foundation; either version 2 of the License, or
010     * (at your option) any later version.
011     *
012     * CleanSheets is distributed in the hope that it will be useful,
013     * but WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015     * GNU General Public License for more details.
016     *
017     * You should have received a copy of the GNU General Public License
018     * along with CleanSheets; if not, write to the Free Software
019     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
020     */
021    package csheets.core.formula;
022    
023    /**
024     * An operation in a formula.
025     * @author Einar Pehrson
026     */
027    public abstract class Operation<O extends Operator> implements Expression {
028    
029            /** The operator */
030            protected O operator;
031    
032            /**
033             * Creates a new operation.
034             * @param operator the (n-ary) operator
035             */
036            public Operation(O operator) {
037                    this.operator = operator;
038            }
039    
040            /** 
041             * Returns the operator.
042             * @return the operator.
043             */
044            public O getOperator() {
045                    return operator;
046            }
047    }