?? filterplugin.java
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/* * This file is part of "The Java Telnet Application". * * This 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. * * "The Java Telnet Application" 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 this software; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */package de.mud.jta;import java.io.IOException;/** * The filter plugin is the base interface for plugins that want to intercept * the communication between front end and back end plugins. Filters and * protocol handlers are a good example. * <P> * <B>Maintainer:</B> Matthias L. Jugel * * @version $Id: FilterPlugin.java,v 2.0 1999/09/08 17:01:45 leo Exp $ * @author Matthias L. Jugel, Marcus Mei遪er */public interface FilterPlugin { /** * Set the source plugin where we get our data from and where the data * sink (write) is. The actual data handling should be done in the * read() and write() methods. * @param source the data source */ public void setFilterSource(FilterPlugin source) throws IllegalArgumentException; /** * Read a block of data from the back end. * @param b the buffer to read the data into * @return the amount of bytes actually read */ public int read(byte[] b) throws IOException; /** * Write a block of data to the back end. * @param b the buffer to be sent */ public void write(byte[] b) throws IOException;}
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