com.mchange.v2.cfg.BasicMultiPropertiesConfig Maven / Gradle / Ivy
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c3p0 is an easy-to-use library for augmenting traditional (DriverManager-based) JDBC drivers with JNDI-bindable DataSources,
including DataSources that implement Connection and Statement Pooling, as described by the jdbc3 spec and jdbc2 std extension.
/*
* Distributed as part of c3p0 v.0.9.1
*
* Copyright (C) 2005 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* 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.cfg;
import java.util.*;
import java.io.*;
import com.mchange.v2.log.*;
public class BasicMultiPropertiesConfig extends MultiPropertiesConfig
{
String[] rps;
Map propsByResourcePaths = new HashMap();
Map propsByPrefixes;
Properties propsByKey;
public BasicMultiPropertiesConfig(String[] resourcePaths)
{ this( resourcePaths, null ); }
public BasicMultiPropertiesConfig(String[] resourcePaths, MLogger logger)
{
List goodPaths = new ArrayList();
for( int i = 0, len = resourcePaths.length; i < len; ++i )
{
String rp = resourcePaths[i];
if ("/".equals(rp))
{
try
{
propsByResourcePaths.put( rp, System.getProperties() );
goodPaths.add( rp );
}
catch (SecurityException e)
{
if (logger != null)
{
if ( logger.isLoggable( MLevel.WARNING ) )
logger.log( MLevel.WARNING,
"Read of system Properties blocked -- " +
"ignoring any configuration via System properties, and using Empty Properties! " +
"(But any configuration via a resource properties files is still okay!)",
e );
}
else
{
System.err.println("Read of system Properties blocked -- " +
"ignoring any configuration via System properties, and using Empty Properties! " +
"(But any configuration via a resource properties files is still okay!)");
e.printStackTrace();
}
}
}
else
{
Properties p = new Properties();
InputStream pis = MultiPropertiesConfig.class.getResourceAsStream( rp );
if ( pis != null )
{
try
{
p.load( pis );
propsByResourcePaths.put( rp, p );
goodPaths.add( rp );
}
catch (IOException e)
{
if (logger != null)
{
if ( logger.isLoggable( MLevel.WARNING ) )
logger.log( MLevel.WARNING,
"An IOException occurred while loading configuration properties from resource path '" + rp + "'.",
e );
}
else
e.printStackTrace();
}
finally
{
try { if ( pis != null ) pis.close(); }
catch (IOException e)
{
if (logger != null)
{
if ( logger.isLoggable( MLevel.WARNING ) )
logger.log( MLevel.WARNING,
"An IOException occurred while closing InputStream from resource path '" + rp + "'.",
e );
}
else
e.printStackTrace();
}
}
}
else
{
if (logger != null)
{
if ( logger.isLoggable( MLevel.FINE ) )
logger.fine( "Configuration properties not found at ResourcePath '" + rp + "'. [logger name: " + logger.getName() + ']' );
}
// else if (Debug.DEBUG && Debug.TRACE == Debug.TRACE_MAX)
// System.err.println("Configuration properties not found at ResourcePath '" + rp + "'." );
}
}
}
this.rps = (String[]) goodPaths.toArray( new String[ goodPaths.size() ] );
this.propsByPrefixes = Collections.unmodifiableMap( extractPrefixMapFromRsrcPathMap(rps, propsByResourcePaths) );
this.propsByResourcePaths = Collections.unmodifiableMap( propsByResourcePaths );
this.propsByKey = extractPropsByKey(rps, propsByResourcePaths);
}
private static String extractPrefix( String s )
{
int lastdot = s.lastIndexOf('.');
if ( lastdot < 0 )
return null;
else
return s.substring(0, lastdot);
}
private static Properties findProps(String rp, Map pbrp)
{
//System.err.println("findProps( " + rp + ", ... )");
Properties p;
// MOVED THIS LOGIC INTO CONSTRUCTOR ABOVE, TO TREAT SYSTEM PROPS UNIFORMLY
// WITH THE REST, AND TO AVOID UNINTENTIONAL ATTEMPTS TO READ RESOURCE "/"
// AS STREAM -- swaldman, 2006-01-19
// if ( "/".equals( rp ) )
// {
// try { p = System.getProperties(); }
// catch ( SecurityException e )
// {
// System.err.println(BasicMultiPropertiesConfig.class.getName() +
// " Read of system Properties blocked -- ignoring any configuration via System properties, and using Empty Properties! " +
// "(But any configuration via a resource properties files is still okay!)");
// p = new Properties();
// }
// }
// else
p = (Properties) pbrp.get( rp );
// System.err.println( p );
return p;
}
private static Properties extractPropsByKey( String[] resourcePaths, Map pbrp )
{
Properties out = new Properties();
for (int i = 0, len = resourcePaths.length; i < len; ++i)
{
String rp = resourcePaths[i];
Properties p = findProps( rp, pbrp );
if (p == null)
{
System.err.println("Could not find loaded properties for resource path: " + rp);
continue;
}
for (Iterator ii = p.keySet().iterator(); ii.hasNext(); )
{
Object kObj = ii.next();
if (!(kObj instanceof String))
{
// note that we can not use the MLog library here, because initialization
// of that library depends on this function.
System.err.println( BasicMultiPropertiesConfig.class.getName() + ": " +
"Properties object found at resource path " +
("/".equals(rp) ? "[system properties]" : "'" + rp + "'") +
"' contains a key that is not a String: " +
kObj);
System.err.println("Skipping...");
continue;
}
Object vObj = p.get( kObj );
if (vObj != null && !(vObj instanceof String))
{
// note that we can not use the MLog library here, because initialization
// of that library depends on this function.
System.err.println( BasicMultiPropertiesConfig.class.getName() + ": " +
"Properties object found at resource path " +
("/".equals(rp) ? "[system properties]" : "'" + rp + "'") +
" contains a value that is not a String: " +
vObj);
System.err.println("Skipping...");
continue;
}
String key = (String) kObj;
String val = (String) vObj;
out.put( key, val );
}
}
return out;
}
private static Map extractPrefixMapFromRsrcPathMap(String[] resourcePaths, Map pbrp)
{
Map out = new HashMap();
//for( Iterator ii = pbrp.values().iterator(); ii.hasNext(); )
for (int i = 0, len = resourcePaths.length; i < len; ++i)
{
String rp = resourcePaths[i];
Properties p = findProps( rp, pbrp );
if (p == null)
{
System.err.println(BasicMultiPropertiesConfig.class.getName() + " -- Could not find loaded properties for resource path: " + rp);
continue;
}
for (Iterator jj = p.keySet().iterator(); jj.hasNext(); )
{
Object kObj = jj.next();
if (! (kObj instanceof String))
{
// note that we can not use the MLog library here, because initialization
// of that library depends on this function.
System.err.println( BasicMultiPropertiesConfig.class.getName() + ": " +
"Properties object found at resource path " +
("/".equals(rp) ? "[system properties]" : "'" + rp + "'") +
"' contains a key that is not a String: " +
kObj);
System.err.println("Skipping...");
continue;
}
String key = (String) kObj;
String prefix = extractPrefix( key );
while (prefix != null)
{
Properties byPfx = (Properties) out.get( prefix );
if (byPfx == null)
{
byPfx = new Properties();
out.put( prefix, byPfx );
}
byPfx.put( key, p.get( key ) );
prefix=extractPrefix( prefix );
}
}
}
return out;
}
public String[] getPropertiesResourcePaths()
{ return (String[]) rps.clone(); }
public Properties getPropertiesByResourcePath(String path)
{
Properties out = ((Properties) propsByResourcePaths.get( path ));
return (out == null ? new Properties() : out);
}
public Properties getPropertiesByPrefix(String pfx)
{
Properties out = ((Properties) propsByPrefixes.get( pfx ));
return (out == null ? new Properties() : out);
}
public String getProperty( String key )
{ return propsByKey.getProperty( key ); }
}