public String getDisplayName() {
        Set<String> includesSet = patternSet.getIncludesView();
        String includes = includesSet.isEmpty() ? "" : String.format(" include %s", GUtil.toString(includesSet));
        Set<String> excludesSet = patternSet.getExcludesView();
        String excludes = excludesSet.isEmpty() ? "" : String.format(" exclude %s", GUtil.toString(excludesSet));
        return String.format("directory '%s'%s%s", dir, includes, excludes);

        lock.lock();
        try {
            // Only expand the thread pool if there is work in the queue or we know that work is about to be submitted (i.e. force == true)
            if (force || !queue.isEmpty()) {
                Future<?> ignored = executor.submit(new ExecutionRunner());
                workerCount++;
            }
        } finally {
            lock.unlock();
        }
    }

    }

    @Override
    public List<IvyArtifactName> getArtifacts() {
        return artifacts;
    }

    @Nullable
    public IvyArtifactName getDependencyArtifact() {
        return artifacts.isEmpty() ? null : artifacts.get(0);
    }

    @Override
    public ModuleDependencyMetadata withRequestedVersion(VersionConstraint requestedVersion) {
        if (requestedVersion.equals(selector.getVersionConstraint())) {

    public PatternSetSnapshottingFilter(PatternSet patternSet, Stat stat) {
        this.stat = stat;
        this.patternSet = patternSet;
    }

    @Override
    public boolean isEmpty() {
        return patternSet.isEmpty();
    }

    @Override
    public FileSystemSnapshotPredicate getAsSnapshotPredicate() {
        Spec<FileTreeElement> spec = patternSet.getAsSpec();

        boostExpression = rule.getBoostExpr();
        scriptType = ComponentUtil.getFessConfig().getCrawlerDefaultScript();
    }

    public boolean match(final Map<String, Object> map) {

        if (map == null || map.isEmpty() || matchExpression == null) {
            return false;
        }

        final Object value = ComponentUtil.getScriptEngineFactory().getScriptEngine(scriptType).evaluate(matchExpression, map);

    return delegateList().containsAll(targets);
  }

  public int size() {
    return delegateList().size();
  }

  @Override
  public boolean isEmpty() {
    return delegateList().isEmpty();
  }

  @Override
  public <T extends @Nullable Object> T[] toArray(T[] other) {
    return delegateList().toArray(other);
  }

  @Override
  public String toString() {

        if (!warnings.isEmpty()) {
            warningReporter.recordValidationWarnings(work, warnings);
        }

        if (!errors.isEmpty()) {
            throwValidationException(work, validationContext, errors);
        }

        if (!warnings.isEmpty()) {
            LOGGER.info("Invalidating VFS because {} failed validation", work.getDisplayName());

    MavenArtifact(String repositoryUrl, Resource resource) {
        if (repositoryUrl == null) {
            this.repositoryUrl = "";
        } else if (!repositoryUrl.endsWith("/") && !repositoryUrl.isEmpty()) {
            this.repositoryUrl = repositoryUrl + '/';
        } else {
            this.repositoryUrl = repositoryUrl;
        }
        this.resource = resource;

            throw new AssertionFailedError(String.format("Expected cause '%s' not found in %s", message, causes));
        }
    }

    @Override
    public void assertHasFirstCause(String message) {
        if (causes.isEmpty()) {
            throw new AssertionFailedError(String.format("Expected first cause '%s', got none", message));
        }
        String firstCause = causes.get(0);
        if (!firstCause.equals(message)) {

    @Override
    public String getLocation() {
        return "";
    }

    @Override
    public String getMessage() {
        String msg = null;

        if (message != null && !message.isEmpty()) {
            msg = message;
        } else if (exception != null) {
            msg = exception.getMessage();
        }

        if (msg == null) {
            msg = "";
        }