001/* SQLData.java -- Custom mapping for a user defined datatype 002 Copyright (C) 1999, 2000, 2006 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package java.sql; 040 041/** 042 * This interface is used for mapping SQL data to user defined datatypes. 043 * 044 * @author Aaron M. Renn (arenn@urbanophile.com) 045 */ 046public interface SQLData 047{ 048 /** 049 * This method returns the user defined datatype name for this object. 050 * 051 * @return The user defined data type name for this object. 052 * @exception SQLException If an error occurs. 053 */ 054 String getSQLTypeName() throws SQLException; 055 056 /** 057 * This method populates the data in the object from the specified stream. 058 * 059 * @param stream The stream to read the data from. 060 * @param typeName The data type name of the data on the stream. 061 * @exception SQLException If an error occurs. 062 */ 063 void readSQL(SQLInput stream, String typeName) throws SQLException; 064 065 /** 066 * This method writes the data in this object to the specified stream. 067 * 068 * @param stream The stream to write the data to. 069 * @exception SQLException If an error occurs. 070 */ 071 void writeSQL(SQLOutput stream) throws SQLException; 072}