JarCastingEMB - Extensible, Modular Builds
EMB is a build tool that wraps and extends Apache Maven. Its goal is to provide a mechanism for changing the core functionality of Maven using sets of add-on libraries.
Getting Started
The simplest way to use EMB is via the emb-booter. To do this, first add a dependency in your POM to emb-booter:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.commonjava.emb.example</groupId>
<artifactId>example</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<mavenVersion>3.0-beta-2</mavenVersion>
<embVersion>0.3-SNAPSHOT</embVersion>
</properties>
<dependencies>
<dependency>
<groupId>org.commonjava.emb</groupId>
<artifactId>emb-booter</artifactId>
<version>${embVersion}</version>
</dependency>
</dependencies>
</project>
Then, create a new EMBEmbedder instance, and use it to build a project:
List<String> goals = new ArrayList<String>();
goals.add( "clean" );
goals.add( "install" );
new EMBEmbedderBuilder().build().execute( new EMBExecutionRequest().setGoals( goals ) );
Using Services
You can use allowed Maven components via the ServiceManager. For instance, to resolve an artifact:
EMBEmbeder emb = new EMBEmbedderBuilder().build();
emb.serviceManager().repositorySystem().resolve( artifact );
Or, to build a set of MavenProject instances from POM files:
EMBEmbeder emb = new EMBEmbedderBuilder().build();
ProjectBuildingRequest req = new DefaultProjectBuildingRequest()
.setSystemProperties( System.getProperties() )
.setValidationLevel( ModelBuildingRequest.VALIDATION_LEVEL_MINIMAL )
.setForceUpdate( true )
.setProcessPlugins( false )
.setRepositoryCache( new InternalRepositoryCache() )
.setLocalRepository( emb.serviceManager()
.repositorySystem()
.createLocalRepository( new File( workDir, "local-repository" ) ) );
List<ProjectBuildingResult> results = emb.serviceManager().projectBuilder().build( pomFiles, useReactor, req );
List<MavenProject> projects = new ArrayList<MavenProject>( pomFiles.size() );
for ( final ProjectBuildingResult result : results )
{
projects.add( result.getProject() );
}