Determine latest version of Web Content in Liferay

Most of the time when using Liferay’s Web Content (i.e. JournalArticle) you will want to determine the latest version to be displayed to your users. The following code snippet shows a simple solution to do so:

List<JournalArticle> articles = JournalArticleLocalServiceUtil.getStructureArticles(GROUPID, STRUCTUREID);
ListIterator<JournalArticle> it = articles.listIterator();
List<String> checkedArticleIds = new ArrayList<String>();

while (it.hasNext()) {
  JournalArticle article = it.next();

  if (checkedArticleIds.contains(article.getArticleId())) {
    continue; // previous article version already checked
  }

  JournalArticle articleLastVersion = JournalArticleLocalServiceUtil.getLatestArticle(GROUPID, article.getArticleId());

  checkedArticleIds.add(article.getArticleId());

  System.out.println("Added articleId " + article.getArticleId() + " with version " + article.getVersion());
}