/**
* Shows articles related with a tag with the specified context.
*
* @param context the specified context
* @throws IOException io exception
*/
@RequestProcessing(value = "/tags/**", method = HTTPRequestMethod.GET)
public void showTagArticles(final HTTPRequestContext context) throws IOException {
final AbstractFreeMarkerRenderer renderer = new FreeMarkerRenderer();
context.setRenderer(renderer);
renderer.setTemplateName("tag-articles.ftl");
final Map<String, Object> dataModel = renderer.getDataModel();
final HttpServletRequest request = context.getRequest();
final HttpServletResponse response = context.getResponse();
try {
String requestURI = request.getRequestURI();
if (!requestURI.endsWith("/")) {
requestURI += "/";
}
String tagTitle = getTagTitle(requestURI);
final int currentPageNum = getCurrentPageNum(requestURI, tagTitle);
if (-1 == currentPageNum) {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
LOGGER.log(
Level.DEBUG,
"Tag[title={0}, currentPageNum={1}]",
new Object[] {tagTitle, currentPageNum});
tagTitle = URLDecoder.decode(tagTitle, "UTF-8");
final JSONObject result = tagQueryService.getTagByTitle(tagTitle);
if (null == result) {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
final JSONObject tag = result.getJSONObject(Tag.TAG);
final String tagId = tag.getString(Keys.OBJECT_ID);
final JSONObject preference = preferenceQueryService.getPreference();
Skins.fillLangs(
preference.optString(Option.ID_C_LOCALE_STRING),
(String) request.getAttribute(Keys.TEMAPLTE_DIR_NAME),
dataModel);
final int pageSize = preference.getInt(Option.ID_C_ARTICLE_LIST_DISPLAY_COUNT);
final int windowSize = preference.getInt(Option.ID_C_ARTICLE_LIST_PAGINATION_WINDOW_SIZE);
final List<JSONObject> articles =
articleQueryService.getArticlesByTag(tagId, currentPageNum, pageSize);
if (articles.isEmpty()) {
try {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
} catch (final IOException ex) {
LOGGER.error(ex.getMessage());
}
}
final boolean hasMultipleUsers = userQueryService.hasMultipleUsers();
if (hasMultipleUsers) {
filler.setArticlesExProperties(request, articles, preference);
} else {
// All articles composed by the same author
final JSONObject author = articleQueryService.getAuthor(articles.get(0));
filler.setArticlesExProperties(request, articles, author, preference);
}
final int tagArticleCount = tag.getInt(Tag.TAG_PUBLISHED_REFERENCE_COUNT);
final int pageCount = (int) Math.ceil((double) tagArticleCount / (double) pageSize);
LOGGER.log(
Level.TRACE,
"Paginate tag-articles[currentPageNum={0}, pageSize={1}, pageCount={2}, windowSize={3}]",
new Object[] {currentPageNum, pageSize, pageCount, windowSize});
final List<Integer> pageNums =
Paginator.paginate(currentPageNum, pageSize, pageCount, windowSize);
LOGGER.log(Level.TRACE, "tag-articles[pageNums={0}]", pageNums);
Collections.sort(articles, Comparators.ARTICLE_CREATE_DATE_COMPARATOR);
fillPagination(dataModel, pageCount, currentPageNum, articles, pageNums);
dataModel.put(Common.PATH, "/tags/" + URLEncoder.encode(tagTitle, "UTF-8"));
dataModel.put(Keys.OBJECT_ID, tagId);
dataModel.put(Tag.TAG, tag);
filler.fillSide(request, dataModel, preference);
filler.fillBlogHeader(request, response, dataModel, preference);
filler.fillBlogFooter(request, dataModel, preference);
statisticMgmtService.incBlogViewCount(request, response);
} catch (final ServiceException e) {
LOGGER.log(Level.ERROR, e.getMessage(), e);
try {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
} catch (final IOException ex) {
LOGGER.error(ex.getMessage());
}
} catch (final JSONException e) {
LOGGER.log(Level.ERROR, e.getMessage(), e);
try {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
} catch (final IOException ex) {
LOGGER.error(ex.getMessage());
}
}
}
