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package org.apache.any23.extractor.html; |
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import org.apache.any23.extractor.ExtractionException; |
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import org.apache.any23.extractor.ExtractionResult; |
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import org.apache.any23.extractor.ExtractorDescription; |
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import org.apache.any23.extractor.ExtractorFactory; |
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import org.apache.any23.extractor.SimpleExtractorFactory; |
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import org.apache.any23.extractor.TagSoupExtractionResult; |
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import org.apache.any23.rdf.PopularPrefixes; |
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import org.apache.any23.vocab.FOAF; |
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import org.apache.any23.vocab.HLISTING; |
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import org.openrdf.model.BNode; |
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import org.openrdf.model.Resource; |
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import org.openrdf.model.URI; |
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import org.openrdf.model.vocabulary.RDF; |
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import org.w3c.dom.Node; |
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|
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.HashSet; |
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import java.util.List; |
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import java.util.Set; |
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|
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import static org.apache.any23.extractor.html.HTMLDocument.TextField; |
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|
49 | 0 | public class HListingExtractor extends EntityBasedMicroformatExtractor { |
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|
51 | 0 | private static final HLISTING hLISTING = HLISTING.getInstance(); |
52 | 0 | private static final FOAF foaf = FOAF.getInstance(); |
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|
54 | 0 | private static final Set<String> ActionClasses = new HashSet<String>() { |
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{ |
56 | 0 | add("sell" ); |
57 | 0 | add("rent" ); |
58 | 0 | add("trade" ); |
59 | 0 | add("meet" ); |
60 | 0 | add("announce"); |
61 | 0 | add("offer" ); |
62 | 0 | add("wanted" ); |
63 | 0 | add("event" ); |
64 | 0 | add("service" ); |
65 | 0 | } |
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}; |
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|
68 | 0 | private static final List<String> validClassesForAddress = Arrays.asList( |
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"post-office-box", |
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"extended-address", |
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"street-address", |
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"locality", |
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"region", |
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"postal-code", |
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"country-name" |
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); |
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|
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private HTMLDocument fragment; |
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|
80 | 0 | public final static ExtractorFactory<HListingExtractor> factory = |
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SimpleExtractorFactory.create( |
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"html-mf-hlisting", |
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PopularPrefixes.createSubset("rdf", "hlisting"), |
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Arrays.asList("text/html;q=0.1", "application/xhtml+xml;q=0.1"), |
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"example-mf-hlisting.html", |
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HListingExtractor.class |
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); |
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|
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public ExtractorDescription getDescription() { |
90 | 0 | return factory; |
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} |
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|
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protected String getBaseClassName() { |
94 | 0 | return "hlisting"; |
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} |
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|
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@Override |
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protected void resetExtractor() { |
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|
100 | 0 | } |
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|
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@Override |
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protected boolean extractEntity(Node node, ExtractionResult out) throws ExtractionException { |
104 | 0 | this.fragment = new HTMLDocument(node); |
105 | 0 | BNode listing = getBlankNodeFor(node); |
106 | 0 | out.writeTriple(listing, RDF.TYPE, hLISTING.Listing); |
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|
108 | 0 | for (String action : findActions(fragment)) { |
109 | 0 | out.writeTriple(listing, hLISTING.action, hLISTING.getClass(action)); |
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} |
111 | 0 | out.writeTriple(listing, hLISTING.lister, addLister() ); |
112 | 0 | addItem(listing); |
113 | 0 | addDateTimes(listing); |
114 | 0 | addPrice(listing); |
115 | 0 | addDescription(listing); |
116 | 0 | addSummary(listing); |
117 | 0 | addPermalink(listing); |
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|
119 | 0 | final TagSoupExtractionResult tser = (TagSoupExtractionResult) out; |
120 | 0 | tser.addResourceRoot( |
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DomUtils.getXPathListForNode(node), |
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listing, |
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this.getClass() |
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); |
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|
126 | 0 | return true; |
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} |
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|
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private void addItem(Resource listing) throws ExtractionException { |
130 | 0 | Node node = fragment.findMicroformattedObjectNode("*", "item"); |
131 | 0 | if (null == node) return; |
132 | 0 | BNode blankItem = valueFactory.createBNode(); |
133 | 0 | addBNodeProperty( |
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node, |
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listing, hLISTING.item, blankItem |
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); |
137 | 0 | addURIProperty(blankItem, RDF.TYPE, hLISTING.Item); |
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|
139 | 0 | HTMLDocument item = new HTMLDocument(node); |
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|
141 | 0 | addItemName(item, blankItem); |
142 | 0 | addItemUrl(item, blankItem); |
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|
144 | 0 | addItemPhoto(fragment, blankItem); |
145 | 0 | addItemAddresses(fragment, blankItem); |
146 | 0 | } |
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|
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private void addItemAddresses(HTMLDocument doc, Resource blankItem) { |
149 | 0 | final String extractorName = getDescription().getExtractorName(); |
150 | 0 | for (Node node : doc.findAll(".//*[contains(@class,'adr')]//*[@class]")) { |
151 | 0 | String[] klasses = node.getAttributes().getNamedItem("class").getNodeValue().split("\\s+"); |
152 | 0 | for (String klass : klasses) |
153 | 0 | if (validClassesForAddress.contains(klass)) { |
154 | 0 | String value = node.getNodeValue(); |
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|
156 | 0 | if (!(null == value || "".equals(value))) { |
157 | 0 | URI property = hLISTING.getPropertyCamelCase(klass); |
158 | 0 | conditionallyAddLiteralProperty( |
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node, |
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blankItem, property, valueFactory.createLiteral(value) |
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); |
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} |
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} |
164 | 0 | } |
165 | 0 | } |
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|
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private void addPermalink(Resource listing) { |
168 | 0 | String link = fragment.find(".//A[contains(@rel,'self') and contains(@rel,'bookmark')]/@href"); |
169 | 0 | conditionallyAddStringProperty( |
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fragment.getDocument(), |
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listing, hLISTING.permalink, link |
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); |
173 | 0 | } |
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|
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private void addPrice(Resource listing) { |
176 | 0 | TextField price = fragment.getSingularTextField("price"); |
177 | 0 | conditionallyAddStringProperty( |
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price.source(), |
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listing, hLISTING.price, price.value() |
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); |
181 | 0 | } |
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|
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private void addDescription(Resource listing) { |
184 | 0 | TextField description = fragment.getSingularTextField("description"); |
185 | 0 | conditionallyAddStringProperty( |
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description.source(), |
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listing, hLISTING.description, description.value() |
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); |
189 | 0 | } |
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|
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private void addSummary(Resource listing) { |
192 | 0 | TextField summary = fragment.getSingularTextField("summary"); |
193 | 0 | conditionallyAddStringProperty( |
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summary.source(), |
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listing, hLISTING.summary, summary.value() |
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); |
197 | 0 | } |
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|
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private void addDateTimes(Resource listing) { |
200 | 0 | TextField listed = fragment.getSingularTextField("dtlisted"); |
201 | 0 | conditionallyAddStringProperty( |
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listed.source(), |
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listing, hLISTING.dtlisted, listed.value() |
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); |
205 | 0 | HTMLDocument.TextField expired = fragment.getSingularTextField("dtexpired"); |
206 | 0 | conditionallyAddStringProperty( |
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expired.source(), |
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listing, hLISTING.dtexpired, expired.value() |
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); |
210 | 0 | } |
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|
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private Resource addLister() throws ExtractionException { |
213 | 0 | Resource blankLister = valueFactory.createBNode(); |
214 | 0 | addURIProperty(blankLister, RDF.TYPE, hLISTING.Lister); |
215 | 0 | Node node = fragment.findMicroformattedObjectNode("*", "lister"); |
216 | 0 | if (null == node) |
217 | 0 | return blankLister; |
218 | 0 | HTMLDocument listerNode = new HTMLDocument(node); |
219 | 0 | addListerFn(listerNode, blankLister); |
220 | 0 | addListerOrg(listerNode, blankLister); |
221 | 0 | addListerEmail(listerNode, blankLister); |
222 | 0 | addListerUrl(listerNode, blankLister); |
223 | 0 | addListerTel(listerNode, blankLister); |
224 | 0 | addListerLogo(listerNode, blankLister); |
225 | 0 | return blankLister; |
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} |
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|
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private void addListerTel(HTMLDocument doc, Resource blankLister) { |
229 | 0 | HTMLDocument.TextField tel = doc.getSingularTextField("tel"); |
230 | 0 | conditionallyAddStringProperty( |
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tel.source(), |
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blankLister, hLISTING.tel, tel.value() |
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); |
234 | 0 | } |
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|
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private void addListerUrl(HTMLDocument doc, Resource blankLister) throws ExtractionException { |
237 | 0 | TextField url = doc.getSingularUrlField("url"); |
238 | 0 | conditionallyAddResourceProperty(blankLister, hLISTING.listerUrl, getHTMLDocument().resolveURI(url.value())); |
239 | 0 | } |
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|
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private void addListerEmail(HTMLDocument doc, Resource blankLister) { |
242 | 0 | TextField email = doc.getSingularUrlField("email"); |
243 | 0 | conditionallyAddResourceProperty(blankLister, foaf.mbox, fixLink(email.value(), "mailto")); |
244 | 0 | } |
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|
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private void addListerFn(HTMLDocument doc, Resource blankLister) { |
247 | 0 | TextField fn = doc.getSingularTextField("fn"); |
248 | 0 | conditionallyAddStringProperty( |
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fn.source(), |
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blankLister, hLISTING.listerName, fn.value() |
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); |
252 | 0 | } |
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|
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private void addListerLogo(HTMLDocument doc, Resource blankLister) throws ExtractionException { |
255 | 0 | TextField logo = doc.getSingularUrlField("logo"); |
256 | 0 | conditionallyAddResourceProperty(blankLister, hLISTING.listerLogo, getHTMLDocument().resolveURI(logo.value())); |
257 | 0 | } |
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|
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private void addListerOrg(HTMLDocument doc, Resource blankLister) { |
260 | 0 | TextField org = doc.getSingularTextField("org"); |
261 | 0 | conditionallyAddStringProperty( |
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org.source(), |
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blankLister, hLISTING.listerOrg, org.value() |
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); |
265 | 0 | } |
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|
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private void addItemName(HTMLDocument item, Resource blankItem) { |
268 | 0 | HTMLDocument.TextField fn = item.getSingularTextField("fn"); |
269 | 0 | conditionallyAddStringProperty( |
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fn.source(), |
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blankItem, hLISTING.itemName, fn.value() |
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); |
273 | 0 | } |
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|
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private void addItemUrl(HTMLDocument item, Resource blankItem) throws ExtractionException { |
276 | 0 | TextField url = item.getSingularUrlField("url"); |
277 | 0 | conditionallyAddResourceProperty(blankItem, hLISTING.itemUrl, getHTMLDocument().resolveURI(url.value())); |
278 | 0 | } |
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|
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private void addItemPhoto(HTMLDocument doc, Resource blankLister) throws ExtractionException { |
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|
282 | 0 | String url = doc.findMicroformattedValue("*", "item", "A", "photo", "@href"); |
283 | 0 | conditionallyAddResourceProperty(blankLister, hLISTING.itemPhoto, getHTMLDocument().resolveURI(url)); |
284 | 0 | url = doc.findMicroformattedValue("*", "item", "IMG", "photo", "@src"); |
285 | 0 | conditionallyAddResourceProperty(blankLister, hLISTING.itemPhoto, getHTMLDocument().resolveURI(url)); |
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|
287 | 0 | url = doc.findMicroformattedValue("*", "photo", "IMG", "", "@src"); |
288 | 0 | conditionallyAddResourceProperty(blankLister, hLISTING.itemPhoto, getHTMLDocument().resolveURI(url)); |
289 | 0 | } |
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|
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private List<String> findActions(HTMLDocument doc) { |
292 | 0 | List<String> actions = new ArrayList<String>(0); |
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|
294 | 0 | String[] classes = doc.readAttribute("class").split("\\s+"); |
295 | 0 | for (String klass : classes) { |
296 | 0 | if (ActionClasses.contains(klass)) |
297 | 0 | actions.add(klass); |
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} |
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|
300 | 0 | for (Node action : doc.findAll("./*[@class]/@class")) { |
301 | 0 | for (String substring : action.getNodeValue().split("\\s+")) { |
302 | 0 | if (ActionClasses.contains(substring)) |
303 | 0 | actions.add(substring); |
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} |
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} |
306 | 0 | return actions; |
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} |
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|
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} |