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/* Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved. The MySQL Connector/J is licensed under the terms of the GPLv2 <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors. There are special exceptions to the terms and conditions of the GPLv2 as it is applied to this software, see the FOSS License Exception <http://www.mysql.com/about/legal/licensing/foss-exception.html>. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ package com.mysql.jdbc.log; import java.lang.reflect.Constructor; import java.lang.reflect.InvocationTargetException; import java.sql.SQLException; import com.mysql.jdbc.ExceptionInterceptor; import com.mysql.jdbc.SQLError; /** * Creates instances of loggers for the driver to use. */ public class LogFactory { /** * Returns a logger instance of the given class, with the given instance * name. * * @param className * the class to instantiate * @param instanceName * the instance name * @return a logger instance * @throws SQLException * if unable to create a logger instance */ public static Log getLogger(String className, String instanceName, ExceptionInterceptor exceptionInterceptor) throws SQLException { if (className == null) { throw SQLError.createSQLException("Logger class can not be NULL", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); } if (instanceName == null) { throw SQLError.createSQLException("Logger instance name can not be NULL", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); } try { Class<?> loggerClass = null; try { loggerClass = Class.forName(className); } catch (ClassNotFoundException nfe) { loggerClass = Class.forName(Log.class.getPackage().getName() + "." + className); } Constructor<?> constructor = loggerClass.getConstructor(new Class[] { String.class }); return (Log) constructor.newInstance(new Object[] { instanceName }); } catch (ClassNotFoundException cnfe) { SQLException sqlEx = SQLError.createSQLException("Unable to load class for logger '" + className + "'", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); sqlEx.initCause(cnfe); throw sqlEx; } catch (NoSuchMethodException nsme) { SQLException sqlEx = SQLError.createSQLException("Logger class does not have a single-arg constructor that takes an instance name", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); sqlEx.initCause(nsme); throw sqlEx; } catch (InstantiationException inse) { SQLException sqlEx = SQLError.createSQLException("Unable to instantiate logger class '" + className + "', exception in constructor?", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); sqlEx.initCause(inse); throw sqlEx; } catch (InvocationTargetException ite) { SQLException sqlEx = SQLError.createSQLException("Unable to instantiate logger class '" + className + "', exception in constructor?", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); sqlEx.initCause(ite); throw sqlEx; } catch (IllegalAccessException iae) { SQLException sqlEx = SQLError.createSQLException("Unable to instantiate logger class '" + className + "', constructor not public", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); sqlEx.initCause(iae); throw sqlEx; } catch (ClassCastException cce) { SQLException sqlEx = SQLError.createSQLException("Logger class '" + className + "' does not implement the '" + Log.class.getName() + "' interface", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, exceptionInterceptor); sqlEx.initCause(cce); throw sqlEx; } } }