protected Set<Artifact> resolveDependencyArtifacts(final DependencySet dependencySet)
      throws InvalidAssemblerConfigurationException {
    final Set<Artifact> dependencyArtifacts = new LinkedHashSet<Artifact>();
    if (resolvedArtifacts != null) {
      dependencyArtifacts.addAll(resolvedArtifacts);
    }

    if (dependencySet.isUseProjectArtifact()) {
      final Artifact projectArtifact = project.getArtifact();
      if ((projectArtifact != null) && (projectArtifact.getFile() != null)) {
        dependencyArtifacts.add(projectArtifact);
      } else {
        logger.warn(
            "Cannot include project artifact: "
                + projectArtifact
                + "; it doesn't have an associated file or directory.");
      }
    }

    if (dependencySet.isUseProjectAttachments()) {
      @SuppressWarnings("unchecked")
      final List<Artifact> attachments = project.getAttachedArtifacts();
      if (attachments != null) {
        for (final Iterator<Artifact> attachmentIt = attachments.iterator();
            attachmentIt.hasNext(); ) {
          final Artifact attachment = attachmentIt.next();

          if (attachment.getFile() != null) {
            dependencyArtifacts.add(attachment);
          } else {
            logger.warn(
                "Cannot include attached artifact: "
                    + project.getId()
                    + " for project: "
                    + project.getId()
                    + "; it doesn't have an associated file or directory.");
          }
        }
      }
    }

    if (dependencySet.isUseTransitiveFiltering()) {
      logger.debug("Filtering dependency artifacts USING transitive dependency path information.");
    } else {
      logger.debug(
          "Filtering dependency artifacts WITHOUT transitive dependency path information.");
    }

    final ScopeArtifactFilter filter = new ScopeArtifactFilter(dependencySet.getScope());

    FilterUtils.filterArtifacts(
        dependencyArtifacts,
        dependencySet.getIncludes(),
        dependencySet.getExcludes(),
        dependencySet.isUseStrictFiltering(),
        dependencySet.isUseTransitiveFiltering(),
        logger,
        filter);

    return dependencyArtifacts;
  }