wro4j-core/src/main/java/ro/isdc/wro/model/transformer/WildcardExpanderModelTransformer.java
private void processResource(final Group group, final Resource resource) {
    final UriLocator uriLocator = locatorFactory.getInstance(resource.getUri());

    if (uriLocator instanceof WildcardUriLocatorSupport) {
      final WildcardStreamLocator wildcardStreamLocator = ((WildcardUriLocatorSupport) uriLocator).getWildcardStreamLocator();

      // TODO should we probably handle the situation when wildcard is present, but the implementation is not
      // expandedHandledAware?
      if (wildcardStreamLocator.hasWildcard(resource.getUri())
          && wildcardStreamLocator instanceof WildcardExpanderHandlerAware) {

        final WildcardExpanderHandlerAware expandedHandler = (WildcardExpanderHandlerAware) wildcardStreamLocator;
        LOG.debug("Expanding resource: {}", resource.getUri());

        final String baseNameFolder = computeBaseNameFolder(resource, uriLocator, expandedHandler);
        LOG.debug("baseNameFolder: {}", baseNameFolder);

        expandedHandler.setWildcardExpanderHandler(createExpanderHandler(group, resource, baseNameFolder));
        try {
          // trigger the wildcard replacement
          uriLocator.locate(resource.getUri());
        } catch (final IOException e) {
          // log only
          LOG.debug("[FAIL] problem while trying to expand wildcard for the following resource uri: {}",
              resource.getUri());
        } finally {
          // remove the handler, it is not needed anymore
          expandedHandler.setWildcardExpanderHandler(null);
        }
      }
    }
  }
private void processResource(final Group group, final Resource resource) {
    final UriLocator uriLocator = locatorFactory.getInstance(resource.getUri());

    if (uriLocator instanceof WildcardUriLocatorSupport) {
      final WildcardStreamLocator wildcardStreamLocator = ((WildcardUriLocatorSupport) uriLocator).getWildcardStreamLocator();

      // TODO should we probably handle the situation when wildcard is present, but the implementation is not
      // expandedHandledAware?
      if (wildcardStreamLocator.hasWildcard(resource.getUri())
          && wildcardStreamLocator instanceof WildcardExpanderHandlerAware) {

        final WildcardExpanderHandlerAware expandedHandler = (WildcardExpanderHandlerAware) wildcardStreamLocator;
        LOG.debug("Expanding resource: {}", resource.getUri());

        final String baseNameFolder = computeBaseNameFolder(resource, uriLocator, expandedHandler);
        LOG.debug("baseNameFolder: {}", baseNameFolder);

        expandedHandler.setWildcardExpanderHandler(createExpanderHandler(group, resource, baseNameFolder));
        try {
          // trigger the wildcard replacement
          uriLocator.locate(resource.getUri());
        } catch (final IOException e) {
          // log only
          LOG.debug("[FAIL] problem while trying to expand wildcard for the following resource uri: {}",
              resource.getUri());
        } finally {
          // remove the handler, it is not needed anymore
          expandedHandler.setWildcardExpanderHandler(null);
        }
      }
    }
  }
Process each resource and replace it with a collection of resources if it contains wildcard.