?? connectionutils.java
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/* * Distributed as part of c3p0 v.0.9.1-pre6 * * Copyright (C) 2005 Machinery For Change, Inc. * * Author: Steve Waldman <swaldman@mchange.com> * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License version 2.1, as * published by the Free Software Foundation. * * This software 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this software; see the file LICENSE. If not, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. */package com.mchange.v1.db.sql;import java.sql.*;import com.mchange.v2.log.*;public final class ConnectionUtils{ private final static MLogger logger = MLog.getLogger( ConnectionUtils.class ); /** * @return false iff and Exception occurred while * trying to close this object. */ public static boolean attemptClose(Connection con) { try { if (con != null) con.close(); //System.err.println("Connection [ " + con + " ] closed."); return true; } catch (SQLException e) { //e.printStackTrace(); //System.err.println("Connection close FAILED."); if ( logger.isLoggable( MLevel.WARNING ) ) logger.log( MLevel.WARNING, "Connection close FAILED.", e ); return false; } } public static boolean attemptRollback(Connection con) { try { if (con != null) con.rollback(); return true; } catch (SQLException e) { //e.printStackTrace(); if ( logger.isLoggable( MLevel.WARNING ) ) logger.log( MLevel.WARNING, "Rollback FAILED.", e ); return false; } } private ConnectionUtils() {}}
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