001/* 002 * HA-JDBC: High-Availability JDBC 003 * Copyright (c) 2004-2007 Paul Ferraro 004 * 005 * This library is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as published by the 007 * Free Software Foundation; either version 2.1 of the License, or (at your 008 * option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, but WITHOUT 011 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 012 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 013 * for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public License 016 * along with this library; if not, write to the Free Software Foundation, 017 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018 * 019 * Contact: ferraro@users.sourceforge.net 020 */ 021package net.sf.hajdbc.sql; 022 023import java.sql.ResultSet; 024import java.sql.Statement; 025 026import net.sf.hajdbc.util.reflect.ProxyFactory; 027 028/** 029 * @author Paul Ferraro 030 * @param <D> 031 * @param <S> 032 */ 033public class LazyResultSetInvocationStrategy<D, S extends Statement> extends DatabaseReadInvocationStrategy<D, S, ResultSet> 034{ 035 private S statement; 036 private TransactionContext<D> transactionContext; 037 private FileSupport fileSupport; 038 039 /** 040 * @param statement the statement from which to create result sets 041 * @param transactionContext 042 * @param fileSupport 043 */ 044 public LazyResultSetInvocationStrategy(S statement, TransactionContext<D> transactionContext, FileSupport fileSupport) 045 { 046 super(); 047 048 this.statement = statement; 049 this.transactionContext = transactionContext; 050 this.fileSupport = fileSupport; 051 } 052 053 /** 054 * @see net.sf.hajdbc.sql.DatabaseReadInvocationStrategy#invoke(net.sf.hajdbc.sql.SQLProxy, net.sf.hajdbc.sql.Invoker) 055 */ 056 @Override 057 public ResultSet invoke(SQLProxy<D, S> proxy, Invoker<D, S, ResultSet> invoker) throws Exception 058 { 059 return ProxyFactory.createProxy(ResultSet.class, new ResultSetInvocationHandler<D, S>(this.statement, proxy, invoker, this.invokeAll(proxy, invoker), this.transactionContext, this.fileSupport)); 060 } 061}