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Provides a maven plugin that supports creating an OSGi bundle from the contents of the compilation classpath along with its resources and dependencies. Plus a zillion other features. The plugin uses the Bnd tool (http://www.aqute.biz/Code/Bnd)

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/*
 * 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.
 */
package org.apache.felix.bundleplugin;


import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import org.apache.maven.artifact.Artifact;


/**
 * Information result of the bundling process
 *
 * @author Carlos Sanchez
 * @version $Id: BundleInfo.java 1786059 2017-03-08 19:30:10Z sseifert $
 */
public class BundleInfo
{
    /**
     * {@link Map} < {@link String}, {@link Set} < {@link Artifact} > >
     * Used to check for duplicated exports. Key is package name and value list of artifacts where it's exported.
     */
    private Map> m_exportedPackages = new HashMap>();


    public void addExportedPackage( String packageName, Artifact artifact )
    {
        Set artifacts = getExportedPackages().get( packageName );
        if ( artifacts == null )
        {
            artifacts = new HashSet();
            m_exportedPackages.put( packageName, artifacts );
        }
        artifacts.add( artifact );
    }


    protected Map> getExportedPackages()
    {
        return m_exportedPackages;
    }


    /**
     * Get a list of packages that are exported in more than one bundle.
     * Key is package name and value list of artifacts where it's exported.
     * @return {@link Map} < {@link String}, {@link Set} < {@link Artifact} > >
     */
    public Map> getDuplicatedExports()
    {
        Map> duplicatedExports = new HashMap>();

        for ( Iterator>> it = getExportedPackages().entrySet().iterator(); it.hasNext(); )
        {
            Map.Entry> entry = it.next();
            Set artifacts = entry.getValue();
            if ( artifacts.size() > 1 )
            {
                /* remove warnings caused by different versions of same artifact */
                Set artifactKeys = new HashSet();

                String packageName = entry.getKey();
                for ( Iterator it2 = artifacts.iterator(); it2.hasNext(); )
                {
                    Artifact artifact = it2.next();
                    artifactKeys.add( artifact.getGroupId() + "." + artifact.getArtifactId() );
                }

                if ( artifactKeys.size() > 1 )
                {
                    duplicatedExports.put( packageName, artifacts );
                }
            }
        }

        return duplicatedExports;
    }


    public void merge( BundleInfo bundleInfo )
    {
        for ( Iterator>> it = bundleInfo.getExportedPackages().entrySet().iterator(); it.hasNext(); )
        {
            Map.Entry> entry = it.next();
            String packageName = entry.getKey();
            Set artifacts = entry.getValue();

            Set artifactsWithPackage = getExportedPackages().get( packageName );
            if ( artifactsWithPackage == null )
            {
                artifactsWithPackage = new HashSet();
                getExportedPackages().put( packageName, artifactsWithPackage );
            }
            artifactsWithPackage.addAll( artifacts );
        }
    }
}