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package org.apache.maven.model.superpom;
/*
* 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.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import org.apache.maven.model.Model;
import org.apache.maven.model.building.ModelProcessor;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.annotations.Requirement;
/**
* Provides the super POM that all models implicitly inherit from.
*
* @author Benjamin Bentmann
*/
@Component( role = SuperPomProvider.class )
public class DefaultSuperPomProvider
implements SuperPomProvider
{
/**
* The cached super POM, lazily created.
*/
private Model superModel;
@Requirement
private ModelProcessor modelProcessor;
public DefaultSuperPomProvider setModelProcessor( ModelProcessor modelProcessor )
{
this.modelProcessor = modelProcessor;
return this;
}
@Override
public Model getSuperModel( String version )
{
if ( superModel == null )
{
String resource = "/org/apache/maven/model/pom-" + version + ".xml";
InputStream is = getClass().getResourceAsStream( resource );
if ( is == null )
{
throw new IllegalStateException( "The super POM " + resource + " was not found"
+ ", please verify the integrity of your Maven installation" );
}
try
{
Map<String, String> options = new HashMap<String, String>();
options.put( "xml:4.0.0", "xml:4.0.0" );
superModel = modelProcessor.read( is, options );
}
catch ( IOException e )
{
throw new IllegalStateException( "The super POM " + resource + " is damaged"
+ ", please verify the integrity of your Maven installation", e );
}
}
return superModel;
}
}
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