001    /**
002     * Copyright 2007 Mike Kroutikov.
003     *
004     * This program is free software; you can redistribute it and/or modify
005     *   it under the terms of the Lesser GNU General Public License as 
006     *   published by the Free Software Foundation; either version 3 of
007     *   the License, or (at your option) any later version.
008     *
009     *   This program is distributed in the hope that it will be useful,
010     *   but WITHOUT ANY WARRANTY; without even the implied warranty of
011     *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012     *   Lesser GNU General Public License for more details.
013     *
014     *   You should have received a copy of the Lesser GNU General Public License
015     *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
016     */
017    
018    package org.otfeed.support;
019    
020    /**
021     * Interface specifying contract for
022     * objects that write quote data out.
023     */
024    public interface IDataWriter {
025    
026            /**
027             * Writes data out, including optional id string.
028             * 
029             * @param id string, identifying the quote source.
030             * @param data quote data.
031             */
032            public void writeData(String id, Object data);
033            
034            /**
035             * Closes stream.
036             * 
037             * If implementation uses internal buffering, its content 
038             * is written out. 
039             *
040             */
041            public void close();
042    }