def resolve(dep_hashes, repos)
      logger.info 'resolving dependencies'
      
      session = MavenRepositorySystemSession.new
      local_repo = LocalRepository.new(local_repository_path)
      local_manager = @system.newLocalRepositoryManager(local_repo)
      session.setLocalRepositoryManager(local_manager)

      collect_req = CollectRequest.new

      dep_hashes.each do |hash|
        dep = Dependency.new new_artifact(hash), 'compile'
        collect_req.addDependency dep
        logger.debug 'requested {}', dep
      end

      repos.each do |uri|
        repo = RemoteRepository.new(uri.object_id.to_s, 'default', uri)
        collect_req.addRepository repo
        logger.info 'added repository {}', repo.getUrl
        enabled = []
        enabled << 'releases' if repo.getPolicy(false).isEnabled
        enabled << 'snapshots' if repo.getPolicy(true).isEnabled
        logger.debug '{}', enabled.join('+')
      end

      node = @system.collectDependencies(session, collect_req).getRoot
        
      dependency_req = DependencyRequest.new(node, nil)
      @system.resolveDependencies(session, dependency_req)
      
      nlg = PreorderNodeListGenerator.new
      node.accept nlg

      if logger.isDebugEnabled
        total_size = 0
        nlg.getArtifacts(false).each do |artifact|
          file = artifact.file
          size = File.stat(artifact.file.absolute_path).size
          total_size += size
          
          logger.debug("Using %0.2f %s" % [size/MiB_PER_BYTE, artifact])
        end
        logger.debug('      -----')
        logger.debug("      %0.2f MiB total" % [total_size/MiB_PER_BYTE])
      else
        nlg.getArtifacts(false).each do |artifact|
          logger.info 'Using {}', artifact
        end
      end

      nlg.getFiles.map{|e| e.to_s }
    end
def resolve(dep_hashes, repos)
      logger.info 'resolving dependencies'
      
      session = MavenRepositorySystemSession.new
      local_repo = LocalRepository.new(local_repository_path)
      local_manager = @system.newLocalRepositoryManager(local_repo)
      session.setLocalRepositoryManager(local_manager)

      collect_req = CollectRequest.new

      dep_hashes.each do |hash|
        dep = Dependency.new new_artifact(hash), 'compile'
        collect_req.addDependency dep
        logger.debug 'requested {}', dep
      end

      repos.each do |uri|
        repo = RemoteRepository.new(uri.object_id.to_s, 'default', uri)
        collect_req.addRepository repo
        logger.info 'added repository {}', repo.getUrl
        enabled = []
        enabled << 'releases' if repo.getPolicy(false).isEnabled
        enabled << 'snapshots' if repo.getPolicy(true).isEnabled
        logger.debug '{}', enabled.join('+')
      end

      node = @system.collectDependencies(session, collect_req).getRoot
        
      dependency_req = DependencyRequest.new(node, nil)
      @system.resolveDependencies(session, dependency_req)
      
      nlg = PreorderNodeListGenerator.new
      node.accept nlg

      if logger.isDebugEnabled
        total_size = 0
        nlg.getArtifacts(false).each do |artifact|
          file = artifact.file
          size = File.stat(artifact.file.absolute_path).size
          total_size += size
          
          logger.debug("Using %0.2f %s" % [size/MiB_PER_BYTE, artifact])
        end
        logger.debug('      -----')
        logger.debug("      %0.2f MiB total" % [total_size/MiB_PER_BYTE])
      else
        nlg.getArtifacts(false).each do |artifact|
          logger.info 'Using {}', artifact
        end
      end

      nlg.getFiles.map{|e| e.to_s }
    end
Resolve a set of dependencies +dep_hashes+ from repositories
 +repos+.

 @param [Array<Hash>] dep_hashes

 @option dep_hash [String] :group_id the groupId of the artifact
 @option dep_hash [String] :artifact_id the artifactId of the artifact
 @option dep_hash [String] :version the version (or range of versions) of the artifact
 @option dep_hash [String] :extension default to 'jar'

 @param [Array<String>] repos urls to maven2 repositories

 @return [Array<String>] list of files