private void addLocations(HTMLDocument doc, Resource entry) throws ExtractionException {
List<Node> nodes =
doc.findAllByClassName(
Microformats2Prefixes.PROPERTY_PREFIX
+ entryFields[11]
+ Microformats2Prefixes.SPACE_SEPARATOR
+ Microformats2Prefixes.CLASS_PREFIX
+ "geo");
if (nodes.isEmpty()) return;
for (Node node : nodes) {
BNode location = valueFactory.createBNode();
addURIProperty(location, RDF.TYPE, vEntry.location);
HTMLDocument fragment = new HTMLDocument(node);
for (String field : geoFields) {
HTMLDocument.TextField[] values =
fragment.getPluralTextField(Microformats2Prefixes.PROPERTY_PREFIX + field);
for (HTMLDocument.TextField val : values) {
Node attribute = val.source().getAttributes().getNamedItem("title");
if (attribute == null) {
conditionallyAddStringProperty(
val.source(), location, vVCARD.getProperty(field), val.value());
} else {
conditionallyAddStringProperty(
val.source(), location, vVCARD.getProperty(field), attribute.getNodeValue());
}
}
}
}
}
/**
* Extractor for the <a href="http://microformats.org/wiki/h-entry">h-entry</a> microformat.
*
* @author Nisala Nirmana
*/
public class HEntryExtractor extends EntityBasedMicroformatExtractor {
private static final HEntry vEntry = HEntry.getInstance();
private static final VCard vVCARD = VCard.getInstance();
private static final String[] entryFields = {
"name",
"summary",
"content",
"published",
"updated",
"category",
"url",
"uid",
"syndication",
"in-reply-to",
"author",
"location",
};
private static final String[] geoFields = {"latitude", "longitude", "altitude"};
@Override
public ExtractorDescription getDescription() {
return HEntryExtractorFactory.getDescriptionInstance();
}
@Override
protected String getBaseClassName() {
return Microformats2Prefixes.CLASS_PREFIX + "entry";
}
@Override
protected void resetExtractor() {
// Empty.
}
@Override
protected boolean extractEntity(Node node, ExtractionResult out) throws ExtractionException {
final BNode entry = getBlankNodeFor(node);
conditionallyAddResourceProperty(entry, RDF.TYPE, vEntry.Entry);
final HTMLDocument fragment = new HTMLDocument(node);
addName(fragment, entry);
addSummary(fragment, entry);
addContent(fragment, entry);
addPublished(fragment, entry);
addUpdated(fragment, entry);
addCategories(fragment, entry);
addURLs(fragment, entry);
addUID(fragment, entry);
addSyndications(fragment, entry);
addInReplyTo(fragment, entry);
addLocations(fragment, entry);
addAuthors(fragment, entry);
return true;
}
private void addAuthors(HTMLDocument doc, Resource entry) throws ExtractionException {
List<Node> nodes =
doc.findAllByClassName(
Microformats2Prefixes.PROPERTY_PREFIX
+ entryFields[10]
+ Microformats2Prefixes.SPACE_SEPARATOR
+ Microformats2Prefixes.CLASS_PREFIX
+ "card");
if (nodes.isEmpty()) return;
HCardExtractorFactory factory = new HCardExtractorFactory();
HCardExtractor extractor = factory.createExtractor();
for (Node node : nodes) {
BNode author = valueFactory.createBNode();
addURIProperty(author, RDF.TYPE, vEntry.author);
extractor.extractEntityAsEmbeddedProperty(
new HTMLDocument(node), author, getCurrentExtractionResult());
}
}
private void mapFieldWithProperty(
HTMLDocument fragment, BNode entry, String fieldClass, URI property) {
HTMLDocument.TextField title = fragment.getSingularTextField(fieldClass);
conditionallyAddStringProperty(title.source(), entry, property, title.value());
}
private void addName(HTMLDocument fragment, BNode entry) {
mapFieldWithProperty(
fragment, entry, Microformats2Prefixes.PROPERTY_PREFIX + entryFields[0], vEntry.name);
}
private void addSummary(HTMLDocument fragment, BNode entry) {
mapFieldWithProperty(
fragment, entry, Microformats2Prefixes.PROPERTY_PREFIX + entryFields[1], vEntry.summary);
}
private void addContent(HTMLDocument fragment, BNode entry) {
mapFieldWithProperty(
fragment,
entry,
Microformats2Prefixes.EMBEDDED_PROPERTY_PREFIX + entryFields[2],
vEntry.content);
}
private void addPublished(HTMLDocument fragment, BNode entry) {
final HTMLDocument.TextField[] durations =
fragment.getPluralTextField(Microformats2Prefixes.TIME_PROPERTY_PREFIX + entryFields[3]);
for (HTMLDocument.TextField duration : durations) {
Node attribute = duration.source().getAttributes().getNamedItem("datetime");
if (attribute == null) {
conditionallyAddStringProperty(
duration.source(), entry, vEntry.published, duration.value());
} else {
conditionallyAddStringProperty(
duration.source(), entry, vEntry.published, attribute.getNodeValue());
}
}
}
private void addUpdated(HTMLDocument fragment, BNode entry) {
final HTMLDocument.TextField[] durations =
fragment.getPluralTextField(Microformats2Prefixes.TIME_PROPERTY_PREFIX + entryFields[4]);
for (HTMLDocument.TextField duration : durations) {
Node attribute = duration.source().getAttributes().getNamedItem("datetime");
if (attribute == null) {
conditionallyAddStringProperty(duration.source(), entry, vEntry.updated, duration.value());
} else {
conditionallyAddStringProperty(
duration.source(), entry, vEntry.updated, attribute.getNodeValue());
}
}
}
private void addCategories(HTMLDocument fragment, BNode entry) {
final HTMLDocument.TextField[] categories =
fragment.getPluralTextField(Microformats2Prefixes.PROPERTY_PREFIX + entryFields[5]);
for (HTMLDocument.TextField category : categories) {
conditionallyAddStringProperty(category.source(), entry, vEntry.category, category.value());
}
}
private void addURLs(HTMLDocument fragment, BNode entry) throws ExtractionException {
final HTMLDocument.TextField[] urls =
fragment.getPluralUrlField(Microformats2Prefixes.URL_PROPERTY_PREFIX + entryFields[6]);
for (HTMLDocument.TextField url : urls) {
addURIProperty(entry, vEntry.url, fragment.resolveURI(url.value()));
}
}
private void addUID(HTMLDocument fragment, BNode entry) throws ExtractionException {
final HTMLDocument.TextField uid =
fragment.getSingularTextField(Microformats2Prefixes.URL_PROPERTY_PREFIX + entryFields[7]);
if (uid.source() == null) return;
addURIProperty(entry, vEntry.uid, fragment.resolveURI(uid.value()));
}
private void addSyndications(HTMLDocument fragment, BNode entry) throws ExtractionException {
final HTMLDocument.TextField[] syndications =
fragment.getPluralUrlField(Microformats2Prefixes.URL_PROPERTY_PREFIX + entryFields[8]);
for (HTMLDocument.TextField syndication : syndications) {
addURIProperty(entry, vEntry.syndication, fragment.resolveURI(syndication.value()));
}
}
private void addInReplyTo(HTMLDocument fragment, BNode entry) throws ExtractionException {
final HTMLDocument.TextField inReplyTo =
fragment.getSingularTextField(Microformats2Prefixes.URL_PROPERTY_PREFIX + entryFields[9]);
if (inReplyTo.source() == null) return;
addURIProperty(entry, vEntry.in_reply_to, fragment.resolveURI(inReplyTo.value()));
}
private void addLocations(HTMLDocument doc, Resource entry) throws ExtractionException {
List<Node> nodes =
doc.findAllByClassName(
Microformats2Prefixes.PROPERTY_PREFIX
+ entryFields[11]
+ Microformats2Prefixes.SPACE_SEPARATOR
+ Microformats2Prefixes.CLASS_PREFIX
+ "geo");
if (nodes.isEmpty()) return;
for (Node node : nodes) {
BNode location = valueFactory.createBNode();
addURIProperty(location, RDF.TYPE, vEntry.location);
HTMLDocument fragment = new HTMLDocument(node);
for (String field : geoFields) {
HTMLDocument.TextField[] values =
fragment.getPluralTextField(Microformats2Prefixes.PROPERTY_PREFIX + field);
for (HTMLDocument.TextField val : values) {
Node attribute = val.source().getAttributes().getNamedItem("title");
if (attribute == null) {
conditionallyAddStringProperty(
val.source(), location, vVCARD.getProperty(field), val.value());
} else {
conditionallyAddStringProperty(
val.source(), location, vVCARD.getProperty(field), attribute.getNodeValue());
}
}
}
}
}
}
