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.Clob; 023import java.sql.SQLException; 024import java.util.Set; 025 026import net.sf.hajdbc.Database; 027import net.sf.hajdbc.sql.io.OutputStreamProxyFactoryFactory; 028import net.sf.hajdbc.sql.io.WriterProxyFactoryFactory; 029import net.sf.hajdbc.util.reflect.Methods; 030 031/** 032 * @author paul 033 * 034 */ 035public class ClobInvocationHandler<Z, D extends Database<Z>, P, C extends Clob> extends LocatorInvocationHandler<Z, D, P, C, ClobProxyFactory<Z, D, P, C>> 036{ 037 private static final Method SET_ASCII_STREAM_METHOD = Methods.getMethod(Blob.class, "setAsciiStream", Long.TYPE); 038 private static final Method SET_CHARACTER_STREAM_METHOD = Methods.getMethod(Blob.class, "setCharacterStream", Long.TYPE); 039 private static final Set<Method> READ_METHODS = Methods.findMethods(Clob.class, "getAsciiStream", "getCharacterStream", "getSubString", "length", "position"); 040 private static final Set<Method> WRITE_METHODS = Methods.findMethods(Clob.class, "setAsciiStream", "setCharacterStream", "setString", "truncate"); 041 042 public ClobInvocationHandler(Class<C> proxyClass, ClobProxyFactory<Z, D, P, C> proxyFactory) 043 { 044 super(proxyClass, proxyFactory, READ_METHODS, WRITE_METHODS); 045 } 046 047 @Override 048 protected ProxyFactoryFactory<Z, D, C, SQLException, ?, ? extends Exception> getProxyFactoryFactory(C object, Method method, Object... parameters) throws SQLException 049 { 050 if (method.equals(SET_ASCII_STREAM_METHOD)) 051 { 052 return new OutputStreamProxyFactoryFactory<Z, D, C>(); 053 } 054 if (method.equals(SET_CHARACTER_STREAM_METHOD)) 055 { 056 return new WriterProxyFactoryFactory<Z, D, C>(); 057 } 058 059 return super.getProxyFactoryFactory(object, method, parameters); 060 } 061}