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package org.apache.maven.configuration.internal;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.io.File;
import org.apache.maven.configuration.BeanConfigurationException;
import org.apache.maven.configuration.BeanConfigurationPathTranslator;
import org.apache.maven.configuration.BeanConfigurationRequest;
import org.apache.maven.configuration.BeanConfigurationValuePreprocessor;
import org.apache.maven.configuration.BeanConfigurator;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.configurator.ComponentConfigurationException;
import org.codehaus.plexus.component.configurator.converters.composite.ObjectWithFieldsConverter;
import org.codehaus.plexus.component.configurator.converters.lookup.ConverterLookup;
import org.codehaus.plexus.component.configurator.converters.lookup.DefaultConverterLookup;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluationException;
import org.codehaus.plexus.component.configurator.expression.TypeAwareExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;
import org.codehaus.plexus.configuration.xml.XmlPlexusConfiguration;
import org.codehaus.plexus.util.xml.Xpp3Dom;
/**
* <strong>Warning:</strong> This is an internal class that is only public for technical reasons, it is not part of the
* public API. In particular, this class can be changed or deleted without prior notice.
*
* @author Benjamin Bentmann
*/
@Component( role = BeanConfigurator.class )
public class DefaultBeanConfigurator
implements BeanConfigurator
{
private final ConverterLookup converterLookup = new DefaultConverterLookup();
public void configureBean( BeanConfigurationRequest request )
throws BeanConfigurationException
{
if ( request == null )
{
throw new IllegalArgumentException( "bean configuration request not specified" );
}
if ( request.getBean() == null )
{
throw new IllegalArgumentException( "bean to be configured not specified" );
}
Object configuration = request.getConfiguration();
if ( configuration == null )
{
return;
}
PlexusConfiguration plexusConfig;
if ( configuration instanceof PlexusConfiguration )
{
plexusConfig = (PlexusConfiguration) configuration;
}
else if ( configuration instanceof Xpp3Dom )
{
plexusConfig = new XmlPlexusConfiguration( (Xpp3Dom) configuration );
}
else
{
throw new BeanConfigurationException( "unsupported bean configuration source ("
+ configuration.getClass().getName() + ")" );
}
if ( request.getConfigurationElement() != null )
{
plexusConfig = plexusConfig.getChild( request.getConfigurationElement() );
}
ClassLoader classLoader = request.getClassLoader();
if ( classLoader == null )
{
classLoader = request.getBean().getClass().getClassLoader();
}
BeanExpressionEvaluator evaluator = new BeanExpressionEvaluator( request );
ObjectWithFieldsConverter converter = new ObjectWithFieldsConverter();
try
{
converter.processConfiguration( converterLookup, request.getBean(), classLoader, plexusConfig, evaluator );
}
catch ( ComponentConfigurationException e )
{
throw new BeanConfigurationException( e.getMessage(), e );
}
}
static class BeanExpressionEvaluator
implements TypeAwareExpressionEvaluator
{
private final BeanConfigurationValuePreprocessor preprocessor;
private final BeanConfigurationPathTranslator translator;
public BeanExpressionEvaluator( BeanConfigurationRequest request )
{
preprocessor = request.getValuePreprocessor();
translator = request.getPathTranslator();
}
public Object evaluate( String expression, Class<?> type )
throws ExpressionEvaluationException
{
if ( preprocessor != null )
{
try
{
return preprocessor.preprocessValue( expression, type );
}
catch ( BeanConfigurationException e )
{
throw new ExpressionEvaluationException( e.getMessage(), e );
}
}
return expression;
}
public Object evaluate( String expression )
throws ExpressionEvaluationException
{
return evaluate( expression, null );
}
public File alignToBaseDirectory( File file )
{
if ( translator != null )
{
return translator.translatePath( file );
}
return file;
}
}
}
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