https://github.com/cstamas/maven-indexer-examples устарел. И сборка не проходит (тесты не проходят).
Nexus Indexer продвинулся вперед и включил также примеры:
https://github.com/apache/maven-indexer/tree/master/indexer-examples
Это строит, и код работает.
Вот упрощенная версия, если вы хотите свернуть свою собственную:
Maven:
<dependencies>
<dependency>
<groupId>org.apache.maven.indexer</groupId>
<artifactId>indexer-core</artifactId>
<version>6.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
<!-- For ResourceFetcher implementation, if used -->
<dependency>
<groupId>org.apache.maven.wagon</groupId>
<artifactId>wagon-http-lightweight</artifactId>
<version>2.3</version>
<scope>compile</scope>
</dependency>
<!-- Runtime: DI, but using Plexus Shim as we use Wagon -->
<dependency>
<groupId>org.eclipse.sisu</groupId>
<artifactId>org.eclipse.sisu.plexus</artifactId>
<version>0.2.1</version>
</dependency>
<dependency>
<groupId>org.sonatype.sisu</groupId>
<artifactId>sisu-guice</artifactId>
<version>3.2.4</version>
</dependency>
Java:
public IndexToGavMappingConverter(File dataDir, String id, String url)
throws PlexusContainerException, ComponentLookupException, IOException
{
this.dataDir = dataDir;
// Create Plexus container, the Maven default IoC container.
final DefaultContainerConfiguration config = new DefaultContainerConfiguration();
config.setClassPathScanning( PlexusConstants.SCANNING_INDEX );
this.plexusContainer = new DefaultPlexusContainer(config);
// Lookup the indexer components from plexus.
this.indexer = plexusContainer.lookup( Indexer.class );
this.indexUpdater = plexusContainer.lookup( IndexUpdater.class );
// Lookup wagon used to remotely fetch index.
this.httpWagon = plexusContainer.lookup( Wagon.class, "http" );
// Files where local cache is (if any) and Lucene Index should be located
this.centralLocalCache = new File( this.dataDir, id + "-cache" );
this.centralIndexDir = new File( this.dataDir, id + "-index" );
// Creators we want to use (search for fields it defines).
// See https://maven.apache.org/maven-indexer/indexer-core/apidocs/index.html?constant-values.html
List<IndexCreator> indexers = new ArrayList();
// https://maven.apache.org/maven-indexer/apidocs/org/apache/maven/index/creator/MinimalArtifactInfoIndexCreator.html
indexers.add( plexusContainer.lookup( IndexCreator.class, "min" ) );
// https://maven.apache.org/maven-indexer/apidocs/org/apache/maven/index/creator/JarFileContentsIndexCreator.html
//indexers.add( plexusContainer.lookup( IndexCreator.class, "jarContent" ) );
// https://maven.apache.org/maven-indexer/apidocs/org/apache/maven/index/creator/MavenPluginArtifactInfoIndexCreator.html
//indexers.add( plexusContainer.lookup( IndexCreator.class, "maven-plugin" ) );
// Create context for central repository index.
this.centralContext = this.indexer.createIndexingContext(
id + "Context", id, this.centralLocalCache, this.centralIndexDir,
url, null, true, true, indexers );
}
final IndexSearcher searcher = this.centralContext.acquireIndexSearcher();
try
{
final IndexReader ir = searcher.getIndexReader();
Bits liveDocs = MultiFields.getLiveDocs(ir);
for ( int i = 0; i < ir.maxDoc(); i++ )
{
if ( liveDocs == null || liveDocs.get( i ) )
{
final Document doc = ir.document( i );
final ArtifactInfo ai = IndexUtils.constructArtifactInfo( doc, this.centralContext );
if (ai == null)
continue;
if (ai.getSha1() == null)
continue;
if (ai.getSha1().length() != 40)
continue;
if ("javadoc".equals(ai.getClassifier()))
continue;
if ("sources".equals(ai.getClassifier()))
continue;
out.append(StringUtils.lowerCase(ai.getSha1())).append(' ');
out.append(ai.getGroupId()).append(":");
out.append(ai.getArtifactId()).append(":");
out.append(ai.getVersion()).append(":");
out.append(StringUtils.defaultString(ai.getClassifier()));
out.append('\n');
}
}
}
finally
{
this.centralContext.releaseIndexSearcher( searcher );
}
Мы используем это в проекте Windup - инструмент миграции JBoss .