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package org.codehaus.plexus.component.configurator.converters.basic;
/*
* 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.lookup.ConverterLookup;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;
/**
* @author Benjamin Bentmann
*/
public class EnumConverter
extends AbstractConfigurationConverter
{
public boolean canConvert( Class type )
{
return type.isEnum();
}
public Object fromConfiguration( ConverterLookup converterLookup, PlexusConfiguration configuration, Class type,
Class baseType, ClassLoader classLoader, ExpressionEvaluator expressionEvaluator,
ConfigurationListener listener )
throws ComponentConfigurationException
{
if ( configuration.getChildCount() > 0 )
{
throw new ComponentConfigurationException( "When configuring a basic element the configuration cannot "
+ "contain any child elements. " + "Configuration element '" + configuration.getName() + "'." );
}
Object retValue = fromExpression( configuration, expressionEvaluator );
if ( retValue instanceof String )
{
try
{
retValue = Enum.valueOf( type, (String) retValue );
}
catch ( RuntimeException e )
{
throw new ComponentConfigurationException( "Cannot assign value " + retValue + " to property "
+ configuration.getName() + " of " + baseType.getName() + ": " + e.getMessage(), e );
}
}
return retValue;
}
}