Exemplo n.º 1
0
  @Override
  public void afterCreateVersion(NodeRef versionableNode, Version version) {
    VersionHistory versionHistory = versionService.getVersionHistory(versionableNode);

    if (maxVersions == 0) {
      logger.debug("alvexMaxVersionPolicy is disabled");
      return;
    }

    if (versionHistory == null) {
      logger.debug("versionHistory does not exist");
    }

    logger.debug("Current number of versions: " + versionHistory.getAllVersions().size());

    // If the current number of versions in the VersionHistory is greater
    // than the maxVersions limit, remove the least recent versions
    while (versionHistory.getAllVersions().size() > maxVersions) {
      logger.debug("Removing Version: " + versionHistory.getRootVersion().getVersionLabel());
      versionService.deleteVersion(versionableNode, versionHistory.getRootVersion());
      versionHistory = versionService.getVersionHistory(versionableNode);
    }
  }
  @Override
  protected Map<String, Object> executeImpl(
      SiteInfo site,
      String pageTitle,
      WebScriptRequest req,
      JSONObject json,
      Status status,
      Cache cache) {
    Map<String, Object> model = new HashMap<>();

    // Grab the version string
    Map<String, String> templateVars = req.getServiceMatch().getTemplateVars();
    String versionId = templateVars.get("versionId");
    if (versionId == null) {
      String error = "No versionId supplied";
      throw new WebScriptException(Status.STATUS_BAD_REQUEST, error);
    }

    // Try to find the page
    WikiPageInfo page = wikiService.getWikiPage(site.getShortName(), pageTitle);
    if (page == null) {
      String message = "The Wiki Page could not be found";
      status.setCode(Status.STATUS_NOT_FOUND);
      status.setMessage(message);

      // Return an empty string though
      model.put(PARAM_CONTENT, "");
      return model;
    }

    // Fetch the version history for the node
    VersionHistory versionHistory = null;
    Version version = null;
    try {
      versionHistory = versionService.getVersionHistory(page.getNodeRef());
    } catch (AspectMissingException e) {
    }

    if (versionHistory == null) {
      // Not been versioned, return an empty string
      model.put(PARAM_CONTENT, "");
      return model;
    }

    // Fetch the version by either ID or Label
    Matcher m = LABEL_PATTERN.matcher(versionId);
    if (m.matches()) {
      // It's a version label like 2.3
      try {
        version = versionHistory.getVersion(versionId);
      } catch (VersionDoesNotExistException e) {
      }
    } else {
      // It's a version ID like ed00bac1-f0da-4042-8598-45a0d39cb74d
      // (The ID is usually part of the NodeRef of the frozen node, but we
      //  don't assume to be able to just generate the full NodeRef)
      for (Version v : versionHistory.getAllVersions()) {
        if (v.getFrozenStateNodeRef().getId().equals(versionId)) {
          version = v;
        }
      }
    }

    // Did we find the right version in the end?
    String contents;
    if (version != null) {
      ContentReader reader =
          contentService.getReader(version.getFrozenStateNodeRef(), ContentModel.PROP_CONTENT);
      if (reader != null) {
        contents = reader.getContentString();
      } else {
        // No content was stored in the version history
        contents = "";
      }
    } else {
      // No warning of the missing version, just return an empty string
      contents = "";
    }

    // All done
    model.put(PARAM_CONTENT, contents);
    model.put("page", page);
    model.put("site", site);
    model.put("siteId", site.getShortName());
    return model;
  }