package org.codehaus.plexus.component.configurator.converters.composite;
/*
* The MIT License
*
* Copyright (c) 2004, The Codehaus
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import org.codehaus.plexus.component.configurator.ComponentConfigurationException;
import org.codehaus.plexus.component.configurator.ConfigurationListener;
import org.codehaus.plexus.component.configurator.converters.AbstractConfigurationConverter;
import org.codehaus.plexus.component.configurator.converters.ConfigurationConverter;
import org.codehaus.plexus.component.configurator.converters.lookup.ConverterLookup;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;
import org.codehaus.plexus.util.StringUtils;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;
/**
* @author <a href="mailto:kenney@codehaus.org">Kenney Westerhof</a>
* @version $Id: ArrayConverter.java 8005 2009-01-04 19:41:09Z bentmann $
*/
public class ArrayConverter
extends AbstractConfigurationConverter
{
public boolean canConvert( Class type )
{
return type.isArray();
}
public Object fromConfiguration( ConverterLookup converterLookup, PlexusConfiguration configuration, Class type,
Class baseType, ClassLoader classLoader, ExpressionEvaluator expressionEvaluator,
ConfigurationListener listener )
throws ComponentConfigurationException
{
Object retValue = fromExpression( configuration, expressionEvaluator, type );
if ( retValue != null )
{
return retValue;
}
List values = new ArrayList();
for ( int i = 0; i < configuration.getChildCount(); i++ )
{
PlexusConfiguration childConfiguration = configuration.getChild( i );
String configEntry = childConfiguration.getName();
String name = fromXML( configEntry );
Class childType = getClassForImplementationHint( null, childConfiguration, classLoader );
// check if the name is a fully qualified classname
if ( childType == null && name.indexOf( '.' ) > 0 )
{
try
{
childType = classLoader.loadClass( name );
}
catch ( ClassNotFoundException e )
{
// doesn't exist - continue processing
}
}
if ( childType == null )
{
// try to find the class in the package of the baseType
// (which is the component being configured)
String baseTypeName = baseType.getName();
int lastDot = baseTypeName.lastIndexOf( '.' );
String className;
if ( lastDot == -1 )
{
className = name;
}
else
{
String basePackage = baseTypeName.substring( 0, lastDot );
className = basePackage + "." + StringUtils.capitalizeFirstLetter( name );
}
try
{
childType = classLoader.loadClass( className );
}
catch ( ClassNotFoundException e )
{
// doesn't exist, continue processing
}
}
// finally just try the component type of the array
if ( childType == null )
{
childType = type.getComponentType();
}
ConfigurationConverter converter = converterLookup.lookupConverterForType( childType );
Object object = converter.fromConfiguration( converterLookup,
childConfiguration,
childType,
baseType,
classLoader,
expressionEvaluator,
listener );
values.add( object );
}
try
{
return values.toArray( (Object[]) Array.newInstance( type.getComponentType(), 0 ) );
}
catch ( ArrayStoreException e )
{
throw new ComponentConfigurationException( "Cannot assign configuration values to array of type "
+ type.getComponentType().getName() + ": " + values );
}
}
}