001/* 002 * HA-JDBC: High-Availability JDBC 003 * Copyright (C) 2012 Paul Ferraro 004 * 005 * This program is free software: you can redistribute it and/or modify 006 * it under the terms of the GNU Lesser General Public License as published by 007 * the Free Software Foundation, either version 3 of the License, or 008 * (at your option) any later version. 009 * 010 * This program is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 013 * GNU Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public License 016 * along with this program. If not, see <http://www.gnu.org/licenses/>. 017 */ 018package net.sf.hajdbc.sql; 019 020import java.lang.reflect.Method; 021import java.sql.Blob; 022import java.sql.SQLException; 023import java.util.Set; 024 025import net.sf.hajdbc.Database; 026import net.sf.hajdbc.sql.io.OutputStreamProxyFactoryFactory; 027import net.sf.hajdbc.util.reflect.Methods; 028 029/** 030 * @author Paul Ferraro 031 * @param <D> 032 * @param <P> 033 */ 034@SuppressWarnings("nls") 035public class BlobInvocationHandler<Z, D extends Database<Z>, P> extends LocatorInvocationHandler<Z, D, P, Blob, BlobProxyFactory<Z, D, P>> 036{ 037 private static final Method SET_BINARY_STREAM_METHOD = Methods.getMethod(Blob.class, "setBinaryStream", Long.TYPE); 038 private static final Set<Method> READ_METHODS = Methods.findMethods(Blob.class, "getBinaryStream", "getBytes", "length", "position"); 039 private static final Set<Method> WRITE_METHODS = Methods.findMethods(Blob.class, "setBinaryStream", "setBytes", "truncate"); 040 041 public BlobInvocationHandler(BlobProxyFactory<Z, D, P> proxyFactory) 042 { 043 super(Blob.class, proxyFactory, READ_METHODS, WRITE_METHODS); 044 } 045 046 @Override 047 protected ProxyFactoryFactory<Z, D, Blob, SQLException, ?, ? extends Exception> getProxyFactoryFactory(Blob object, Method method, Object... parameters) throws SQLException 048 { 049 if (method.equals(SET_BINARY_STREAM_METHOD)) 050 { 051 return new OutputStreamProxyFactoryFactory<Z, D, Blob>(); 052 } 053 054 return super.getProxyFactoryFactory(object, method, parameters); 055 } 056}