@SuppressWarnings("unchecked")
private void serializeToFeed(
OutputStream outputStream,
GeolocResultsDto geolocResultsDto,
String feedVersion,
int startPaginationIndex) {
SyndFeed synFeed = new SyndFeedImpl();
Writer oWriter = null;
try {
synFeed.setFeedType(feedVersion);
synFeed.setTitle(Constants.FEED_TITLE);
synFeed.setLink(Constants.FEED_LINK);
synFeed.setDescription(Constants.FEED_DESCRIPTION);
List<SyndEntry> entries = new ArrayList<SyndEntry>();
for (GisFeatureDistance gisFeatureDistance : geolocResultsDto.getResult()) {
SyndEntry entry = new SyndEntryImpl();
GeoRSSModule geoRSSModuleGML = new GMLModuleImpl();
OpenSearchModule openSearchModule = new OpenSearchModuleImpl();
geoRSSModuleGML.setLatitude(gisFeatureDistance.getLat());
geoRSSModuleGML.setLongitude(gisFeatureDistance.getLng());
openSearchModule.setItemsPerPage(Pagination.DEFAULT_MAX_RESULTS);
openSearchModule.setTotalResults(geolocResultsDto.getNumFound());
openSearchModule.setStartIndex(startPaginationIndex);
entry.getModules().add(openSearchModule);
entry.getModules().add(geoRSSModuleGML);
entry.setTitle(gisFeatureDistance.getName());
entry.setAuthor(Constants.MAIL_ADDRESS);
entry.setLink(Constants.GISFEATURE_BASE_URL + +gisFeatureDistance.getFeatureId());
SyndContent description = new SyndContentImpl();
description.setType(OutputFormat.ATOM.getContentType());
description.setValue(gisFeatureDistance.getName());
entry.setDescription(description);
entries.add(entry);
}
synFeed.setEntries(entries);
try {
oWriter = new OutputStreamWriter(outputStream, Constants.CHARSET);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException("unknow encoding " + Constants.CHARSET);
}
// Copy synfeed to output
SyndFeedOutput output = new SyndFeedOutput();
try {
output.output(synFeed, oWriter);
// Flush
oWriter.flush();
} catch (Exception e) {
throw new RuntimeException(e);
}
} finally {
if (oWriter != null)
try {
oWriter.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
if (outputStream != null)
try {
outputStream.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
// @Transactional
// @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
public void importEntry(
final SyndFeed feed,
final SyndEntry entry,
final Set<KiWiUriResource> types,
final Set<ContentItem> tags,
User user,
final Collection<ContentItem> output) {
if (user == null && entry.getAuthor() != null && !"".equals(entry.getAuthor())) {
if (userService.userExists(entry.getAuthor())) {
user = userService.getUserByLogin(entry.getAuthor());
} else {
// user = userService.createUser(entry.getAuthor());
/* In my opinion, it is not ok to create a user entity
* without asking the person if he/she wants to be
* created and persisted in the KiWi dataset.
* Thus I'm changing the user to 'anonymous',
* if he/she is'nt registered with the same nick that
* is given in the rss entry.
*/
user = userService.getUserByLogin("anonymous");
kiwiEntityManager.persist(user);
}
}
log.debug("feed entry: #0 (#1)", entry.getTitle(), entry.getUri());
// create a new content item and copy all data from the feed entry
ContentItem item;
if (entry.getLink() != null) {
item = contentItemService.createExternContentItem(entry.getLink());
} else if (entry.getUri() != null) {
try {
// try parsing URI; if it is not valid,
URI uri = new URI(entry.getUri());
item = contentItemService.createExternContentItem(entry.getUri());
} catch (URISyntaxException e) {
item = contentItemService.createExternContentItem(feed.getLink() + "#" + entry.getUri());
}
} else {
item = contentItemService.createContentItem();
}
contentItemService.updateTitle(item, entry.getTitle());
if (feed.getLanguage() != null) item.setLanguage(new Locale(feed.getLanguage()));
if (entry.getPublishedDate() != null) {
item.setCreated(entry.getPublishedDate());
item.setModified(entry.getPublishedDate());
}
if (entry.getUpdatedDate() != null) {
if (entry.getPublishedDate() == null) {
item.setCreated(entry.getUpdatedDate());
}
item.setModified(entry.getUpdatedDate());
}
item.setAuthor(user);
// read feed content and set it as item's text content
List<SyndContent> contents = entry.getContents();
if (contents.size() == 1) {
log.debug("using RSS content section provided by item");
contentItemService.updateTextContentItem(item, "<p>" + contents.get(0).getValue() + "</p>");
} else if (contents.size() > 1) {
log.warn("feed entry contained more than one content section");
contentItemService.updateTextContentItem(item, "<p>" + contents.get(0).getValue() + "</p>");
} else if (contents.size() == 0) {
if (entry.getDescription() != null && entry.getDescription().getValue() != null) {
log.debug("using RSS description as no content section was available");
contentItemService.updateTextContentItem(
item, "<p>" + entry.getDescription().getValue() + "</p>");
}
}
// save before tagging
contentItemService.saveContentItem(item);
// read feed categories and use them as tags
for (SyndCategory cat : (List<SyndCategory>) entry.getCategories()) {
ContentItem _cat;
if (!taggingService.hasTag(item, cat.getName())) {
if (cat.getTaxonomyUri() != null) {
_cat = contentItemService.getContentItemByUri(cat.getTaxonomyUri());
if (_cat == null) {
_cat = contentItemService.createExternContentItem(cat.getTaxonomyUri());
contentItemService.updateTitle(_cat, cat.getName());
_cat.setAuthor(user);
contentItemService.saveContentItem(_cat);
}
taggingService.createTagging(cat.getName(), item, _cat, user);
} else {
_cat = contentItemService.getContentItemByTitle(cat.getName());
if (_cat == null) {
_cat = contentItemService.createContentItem();
contentItemService.updateTitle(_cat, cat.getName());
_cat.setAuthor(user);
contentItemService.saveContentItem(_cat);
}
taggingService.createTagging(cat.getName(), item, _cat, user);
}
}
}
// scan for Twitter-style hash tags in title (e.g. #kiwiknows, see KIWI-622)
Matcher m_hashtag = p_hashtag.matcher(entry.getTitle());
while (m_hashtag.find()) {
String tag_label = m_hashtag.group(1);
if (!taggingService.hasTag(item, tag_label)) {
ContentItem tag = contentItemService.getContentItemByTitle(tag_label);
if (tag == null) {
tag = contentItemService.createContentItem();
contentItemService.updateTitle(tag, tag_label);
tag.setAuthor(user);
contentItemService.saveContentItem(tag);
}
taggingService.createTagging(tag_label, item, tag, user);
}
}
// check for geo information
GeoRSSModule geoRSSModule = GeoRSSUtils.getGeoRSS(entry);
if (geoRSSModule != null && geoRSSModule.getPosition() != null) {
POI poi = kiwiEntityManager.createFacade(item, POI.class);
poi.setLatitude(geoRSSModule.getPosition().getLatitude());
poi.setLongitude(geoRSSModule.getPosition().getLongitude());
kiwiEntityManager.persist(poi);
}
// check for media information
MediaEntryModule mediaModule = (MediaEntryModule) entry.getModule(MediaModule.URI);
if (mediaModule != null) {
MediaContent[] media = mediaModule.getMediaContents();
if (media.length > 0) {
MediaContent m = media[0];
if (m.getReference() instanceof UrlReference) {
URL url = ((UrlReference) m.getReference()).getUrl();
String type = m.getType();
String name = url.getFile();
if (name.lastIndexOf("/") > 0) {
name = name.substring(name.lastIndexOf("/") + 1);
}
log.debug("importing media data from URL #0", url.toString());
try {
InputStream is = url.openStream();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
int c;
while ((c = is.read()) != -1) {
bout.write(c);
}
byte[] data = bout.toByteArray();
contentItemService.updateMediaContentItem(item, data, type, name);
is.close();
bout.close();
} catch (IOException ex) {
log.error("error importing media content from RSS stream");
}
} else {
log.info("RSS importer can only import media with URL references");
}
} else {
log.warn("media module found without content");
}
Category[] cats = mediaModule.getMetadata().getCategories();
for (Category cat : cats) {
ContentItem _cat;
String label = cat.getLabel() != null ? cat.getLabel() : cat.getValue();
if (!taggingService.hasTag(item, label)) {
if (cat.getScheme() != null) {
_cat = contentItemService.getContentItemByUri(cat.getScheme() + cat.getValue());
if (_cat == null) {
_cat = contentItemService.createExternContentItem(cat.getScheme() + cat.getValue());
contentItemService.updateTitle(_cat, label);
_cat.setAuthor(user);
contentItemService.saveContentItem(_cat);
}
taggingService.createTagging(label, item, _cat, user);
} else {
_cat = contentItemService.getContentItemByTitle(label);
if (_cat == null) {
_cat = contentItemService.createContentItem();
contentItemService.updateTitle(_cat, label);
_cat.setAuthor(user);
contentItemService.saveContentItem(_cat);
}
taggingService.createTagging(label, item, _cat, user);
}
}
}
}
// add parameter categories as tags
for (ContentItem tag : tags) {
if (!taggingService.hasTag(item, tag.getTitle())) {
taggingService.createTagging(tag.getTitle(), item, tag, user);
}
}
// add parameter types as types
for (KiWiUriResource type : types) {
item.addType(type);
}
// add kiwi:FeedPost type
item.addType(tripleStore.createUriResource(Constants.NS_KIWI_CORE + "FeedPost"));
/* the flush is necessary, because CIs or tags will
* otherwise be created multiple times when they
* appear more than once in one RSS feed */
entityManager.flush();
log.debug("imported content item '#0' with URI '#1'", item.getTitle(), item.getResource());
}
private DocumentPojo buildDocument(
SyndEntry entry, SourcePojo source, LinkedList<String> duplicateSources) {
String tmpURL = this.cleanUrlStart(entry.getLink().toString());
// (can't return null because called from code which checks this)
// create the feed pojo
DocumentPojo doc = new DocumentPojo();
doc.setUrl(tmpURL);
doc.setCreated(new Date());
doc.setModified(new Date());
// Strip out html if it is present
if (entry.getTitle() != null) doc.setTitle(entry.getTitle().replaceAll("\\<.*?\\>", "").trim());
if (entry.getDescription() != null)
doc.setDescription(entry.getDescription().getValue().replaceAll("\\<.*?\\>", "").trim());
if (entry.getPublishedDate() != null) {
doc.setPublishedDate(entry.getPublishedDate());
} else {
doc.setPublishedDate(new Date());
}
// Clone from an existing source if we can:
if (!duplicateSources.isEmpty()
&& (null == doc.getUpdateId())) { // (can't duplicate updating document)
doc.setDuplicateFrom(duplicateSources.getFirst());
}
// GeoRSS
GeoRSSModule geoRSSModule =
GeoRSSUtils.getGeoRSS(entry); // currently does not handle <georss:circle>
if (null != geoRSSModule) {
if (null != geoRSSModule.getPosition()) {
double lat = geoRSSModule.getPosition().getLatitude();
double lon = geoRSSModule.getPosition().getLongitude();
GeoPojo gp = new GeoPojo();
gp.lat = lat;
gp.lon = lon;
doc.setDocGeo(gp);
}
if (null != geoRSSModule.getGeometry()) {
AbstractGeometry ag = geoRSSModule.getGeometry();
if (ag.getClass().equals(new LineString().getClass())) { // <georss:line>
LineString ls = ((LineString) geoRSSModule.getGeometry());
double latAvg = 0.0;
double lonAvg = 0.0;
int length = ls.getPositionList().size();
for (int i = 0; i < length; i++) {
latAvg += ls.getPositionList().getLatitude(i);
lonAvg += ls.getPositionList().getLongitude(i);
}
latAvg = latAvg / length;
lonAvg = lonAvg / length;
GeoPojo gp = new GeoPojo();
gp.lat = latAvg;
gp.lon = lonAvg;
doc.setDocGeo(gp);
} else if (ag.getClass().equals(new Polygon().getClass())) // <georss:polygon>
{
Polygon poly = ((Polygon) geoRSSModule.getGeometry());
AbstractRing ar = poly.getExterior();
LinearRing lr = (LinearRing) ar;
double latAvg = 0.0;
double lonAvg = 0.0;
int length = lr.getPositionList().size();
for (int i = 0; i < length; i++) {
latAvg += lr.getPositionList().getLatitude(i);
lonAvg += lr.getPositionList().getLongitude(i);
}
latAvg = latAvg / length;
lonAvg = lonAvg / length;
GeoPojo gp = new GeoPojo();
gp.lat = latAvg;
gp.lon = lonAvg;
doc.setDocGeo(gp);
} else if (ag.getClass().equals(new Envelope().getClass())) { // <georss:box>
Envelope env = ((Envelope) geoRSSModule.getGeometry());
double latAvg = (env.getMaxLatitude() + env.getMinLatitude()) / 2;
double lonAvg = (env.getMaxLongitude() + env.getMinLongitude()) / 2;
GeoPojo gp = new GeoPojo();
gp.lat = latAvg;
gp.lon = lonAvg;
doc.setDocGeo(gp);
}
}
} // end if GeoRSS
// Arbitrary other metadata:
if (null != entry.getForeignMarkup()) {
JSONObject rssMetadata = new JSONObject();
@SuppressWarnings("unchecked")
List<Element> fms = (List<Element>) entry.getForeignMarkup();
for (Element fm : fms) {
try {
JSONObject subObj = XML.toJSONObject(new XMLOutputter().outputString(fm));
if (1 == subObj.length()) {
for (String name : JSONObject.getNames(subObj)) {
rssMetadata.put(name, subObj.get(name));
}
} else { // (this will never happen in practice?)
rssMetadata.put(fm.getName(), subObj);
}
} catch (JSONException e) {
} // (do nothing just carry on)
}
if (!fms.isEmpty()) {
doc.addToMetadata(
"_FEED_METADATA_", XmlToMetadataParser.convertJsonObjectToLinkedHashMap(rssMetadata));
}
} // TESTED (longs converted to string, eg edgar:assistantDirector from
// "http.www.sec.gov.archives.edgar.usgaap.rss.xml")
return doc;
}