/* * 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.v2.c3p0.cfg;import java.io.*;import java.util.HashMap;import java.util.Properties;import com.mchange.v2.cfg.MultiPropertiesConfig;public class DefaultC3P0ConfigFinder implements C3P0ConfigFinder{    final static String XML_CFG_FILE_KEY = "com.mchange.v2.c3p0.cfg.xml";    public C3P0Config findConfig() throws Exception    {	C3P0Config out;	HashMap flatDefaults = C3P0ConfigUtils.extractHardcodedC3P0Defaults();	// this includes System properties, but we have to check for System properties	// again, since we want system properties to override unspecified user, default-config	// properties in the XML	flatDefaults.putAll( C3P0ConfigUtils.extractC3P0PropertiesResources() );	String cfgFile = MultiPropertiesConfig.readVmConfig().getProperty( XML_CFG_FILE_KEY );	if (cfgFile == null)	    {		C3P0Config xmlConfig = C3P0ConfigUtils.extractXmlConfigFromDefaultResource();		if (xmlConfig != null)		    {			insertDefaultsUnderNascentConfig( flatDefaults, xmlConfig );			out = xmlConfig;		    }		else		    out = C3P0ConfigUtils.configFromFlatDefaults( flatDefaults );	    }	else	    {		InputStream is = new BufferedInputStream( new FileInputStream( cfgFile ) );		try		    {			C3P0Config xmlConfig = C3P0ConfigUtils.extractXmlConfigFromInputStream( is );			insertDefaultsUnderNascentConfig( flatDefaults, xmlConfig );			out = xmlConfig;		    }		finally		    {			try {is.close();}			catch (Exception e)			    { e.printStackTrace(); }		    }	    }	// overwrite default, unspecified user config with System properties	// defined values	Properties sysPropConfig = C3P0ConfigUtils.findAllC3P0SystemProperties();	out.defaultConfig.props.putAll( sysPropConfig );	return out;    }    private void insertDefaultsUnderNascentConfig(HashMap flatDefaults, C3P0Config config)    {	flatDefaults.putAll( config.defaultConfig.props );	config.defaultConfig.props = flatDefaults;    }}