package org.dvcama.lodview.builder;
import java.io.ByteArrayOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import org.apache.jena.riot.Lang;
import org.dvcama.lodview.bean.OntologyBean;
import org.dvcama.lodview.bean.ResultBean;
import org.dvcama.lodview.bean.TripleBean;
import org.dvcama.lodview.conf.ConfigurationBean;
import org.dvcama.lodview.endpoint.SPARQLEndPoint;
import org.dvcama.lodview.utils.Misc;
import org.springframework.context.MessageSource;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.rdf.model.RDFWriter;
public class ResourceBuilder {
private MessageSource messageSource;
public ResourceBuilder() {
}
public ResourceBuilder(MessageSource messageSource) {
this.messageSource = messageSource;
}
public ResultBean buildHtmlResource(String IRI, Locale locale, ConfigurationBean conf, OntologyBean ontoBean) throws Exception {
return buildHtmlResource(IRI, locale, conf, ontoBean, false);
}
public ResultBean buildHtmlResource(String IRI, Locale locale, ConfigurationBean conf, OntologyBean ontoBean, boolean localMode) throws Exception {
ResultBean result = new ResultBean();
List<String> videos = new ArrayList<String>();
List<String> audios = new ArrayList<String>();
List<String> images = new ArrayList<String>();
List<String> linking = new ArrayList<String>();
SPARQLEndPoint se = new SPARQLEndPoint(conf, ontoBean, locale.getLanguage());
result.setMainIRI(IRI);
String preferredLanguage = conf.getPreferredLanguage();
if (preferredLanguage.equals("auto")) {
preferredLanguage = locale.getLanguage();
}
List<TripleBean> triples = new ArrayList<TripleBean>();
if (conf.getEndPointUrl() != null && conf.getEndPointUrl().equals("<>")) {
localMode = true;
}
if (localMode) {
/* looking for data via content negotiation */
Model m = ModelFactory.createDefaultModel();
try {
m.read(IRI);
} catch (Exception e) {
throw new Exception(messageSource.getMessage("error.noContentNegotiation", null, "sorry but content negotiation is not supported by the IRI", locale));
}
triples = se.doLocalQuery(m, IRI, conf.getDefaultQueries());
} else {
triples = se.doQuery(IRI, conf.getDefaultQueries(), null);
}
boolean betterTitleMatch = false, betterDescrMatch = false;
for (TripleBean tripleBean : triples) {
if (tripleBean.getIRI() == null) {
tripleBean.setIRI(IRI);
tripleBean.setNsIRI(Misc.toNsResource(tripleBean.getIRI(), conf));
}
if (conf.getTitleProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getTitleProperties().contains(tripleBean.getProperty().getProperty())) {
if (tripleBean.getIRI().equals(IRI) && !betterTitleMatch && (result.getTitle() == null || result.getTitle().trim().equals("") || (tripleBean.getLang() != null && (preferredLanguage.equals(tripleBean.getLang()) || tripleBean.getLang().equals("en"))))) {
result.setTitle(Misc.stripHTML(tripleBean.getValue()));
if (preferredLanguage.equals(tripleBean.getLang())) {
betterTitleMatch = true;
}
}
} else if (conf.getDescriptionProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getDescriptionProperties().contains(tripleBean.getProperty().getProperty())) {
if (tripleBean.getIRI().equals(IRI) && !betterDescrMatch && (result.getDescriptionProperty() == null || (tripleBean.getLang() != null && (preferredLanguage.equals(tripleBean.getLang()) || tripleBean.getLang().equals("en"))))) {
result.setDescriptionProperty(tripleBean.getProperty());
if (preferredLanguage.equals(tripleBean.getLang())) {
betterDescrMatch = true;
}
}
} else if (conf.getLatitudeProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getLatitudeProperties().contains(tripleBean.getProperty().getProperty())) {
result.setLatitude(tripleBean.getValue());
} else if (conf.getLongitudeProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getLongitudeProperties().contains(tripleBean.getProperty().getProperty())) {
result.setLongitude(tripleBean.getValue());
} else if (conf.getImageProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getImageProperties().contains(tripleBean.getProperty().getProperty())) {
images.add(tripleBean.getValue());
} else if (conf.getAudioProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getAudioProperties().contains(tripleBean.getProperty().getProperty())) {
audios.add(tripleBean.getValue());
} else if (conf.getVideoProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getVideoProperties().contains(tripleBean.getProperty().getProperty())) {
videos.add(tripleBean.getValue());
} else if (conf.getLinkingProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getLinkingProperties().contains(tripleBean.getProperty().getProperty())) {
linking.add(tripleBean.getValue());
} else if (conf.getTypeProperties().contains(tripleBean.getProperty().getNsProperty()) || conf.getTypeProperties().contains(tripleBean.getProperty().getProperty())) {
result.setTypeProperty(tripleBean.getProperty());
}
if (tripleBean.getType().equals("iri")) {
tripleBean.setUrl(Misc.toBrowsableUrl(tripleBean.getValue(), conf));
tripleBean.setNsValue(Misc.toNsResource(tripleBean.getValue(), conf));
if (!tripleBean.getUrl().equals(tripleBean.getValue()) || tripleBean.getValue().startsWith(conf.getPublicUrlPrefix())) {
tripleBean.setLocal(true);
}
result.addResource(tripleBean, tripleBean.getIRI());
} else if (tripleBean.getType().equals("literal")) {
result.addLiteral(tripleBean, tripleBean.getIRI());
} else if (tripleBean.getType().equals("bnode")) {
result.addBnode(tripleBean, tripleBean.getIRI());
}
}
result.setImages(images);
result.setLinking(linking);
result.setVideos(videos);
result.setAudios(audios);
return result;
}
public String buildRDFResource(String IRI, String sparql, Lang lang, ConfigurationBean conf) throws Exception {
String result = "empty content";
Model model = ModelFactory.createDefaultModel();
model.setNsPrefixes(conf.getPrefixes());
SPARQLEndPoint se = new SPARQLEndPoint(conf, null, null);
model = se.extractData(model, IRI, sparql, conf.getDefaultRawDataQueries());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
RDFWriter rdfWriter = model.getWriter(lang.getName());
rdfWriter.setProperty("showXMLDeclaration","true");
rdfWriter.setProperty("relativeURIs","");
rdfWriter.write(model, baos, conf.getIRInamespace());
byte[] resultByteArray = baos.toByteArray();
result = new String(resultByteArray);
return result;
}
public String buildRDFResource(String IRI, Model m, Lang lang, ConfigurationBean conf) throws Exception {
String result = "empty content";
Model model = ModelFactory.createDefaultModel();
model.setNsPrefixes(conf.getPrefixes());
SPARQLEndPoint se = new SPARQLEndPoint(conf, null, null);
model = se.extractLocalData(model, IRI, m, conf.getDefaultRawDataQueries());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
RDFWriter rdfWriter = model.getWriter(lang.getName());
rdfWriter.setProperty("showXMLDeclaration","true");
rdfWriter.setProperty("relativeURIs","");
rdfWriter.write(model, baos, conf.getIRInamespace());
rdfWriter.setProperty("showXMLDeclaration","true");
rdfWriter.setProperty("relativeURIs","");
byte[] resultByteArray = baos.toByteArray();
result = new String(resultByteArray);
return result;
}
public ResultBean buildPartialHtmlResource(String IRI, String[] abouts, Locale locale, ConfigurationBean conf, OntologyBean ontoBean, List<String> filterProperties) throws Exception {
SPARQLEndPoint se = new SPARQLEndPoint(conf, ontoBean, locale.getLanguage());
ResultBean result = new ResultBean();
List<TripleBean> literals = new ArrayList<TripleBean>();
String preferredLanguage = conf.getPreferredLanguage();
if (preferredLanguage.equals("auto")) {
preferredLanguage = locale.getLanguage();
}
List<TripleBean> triples = new ArrayList<TripleBean>();
/*
* FIXME: make more distinct queries to avoid length limits, eg
* http://dati.camera.it/ocd/assemblea.rdf/a16
*/
StringBuilder filter = new StringBuilder();
for (String titleProperty : filterProperties) {
if (titleProperty.toLowerCase().startsWith("http:")) {
filter.append("(?filterProperty = <" + titleProperty + ">)");
} else {
filter.append("(?filterProperty = " + titleProperty + ")");
}
filter.append(" || ");
}
for (String about : abouts) {
StringBuilder sparqlQuery = new StringBuilder("select distinct ?o ");
sparqlQuery.append("{ <" + about + "> ?filterProperty ?o. FILTER (" + filter + "))} ");
List<String> sparqlQueries = new ArrayList<String>();
sparqlQueries.add(sparqlQuery.toString().replaceAll("\\|\\| \\)", ""));
try {
if (conf.getEndPointUrl().equals("<>")) {
/* looking for data via content negotiation */
Model m = ModelFactory.createDefaultModel();
try {
m.read(about);
} catch (Exception e) {
throw new Exception(messageSource.getMessage("error.noContentNegotiation", null, "sorry but content negotiation is not supported by the IRI", locale));
}
triples.addAll(se.doLocalQuery(m, about, sparqlQueries, about));
} else {
triples.addAll(se.doQuery(null, sparqlQueries, about));
}
} catch (Exception e) {
}
}
Map<String, List<TripleBean>> l = new HashMap<String, List<TripleBean>>();
for (TripleBean tripleBean : triples) {
if (tripleBean.getType().equals("literal")) {
List<TripleBean> al = l.get(tripleBean.getProperty().getProperty());
if (al == null) {
al = new ArrayList<TripleBean>();
}
al.add(tripleBean);
l.put(tripleBean.getProperty().getProperty(), al);
}
}
for (String about : l.keySet()) {
List<TripleBean> al = l.get(about);
boolean betterTitleMatch = false;
TripleBean title = null;
for (TripleBean tripleBean : al) {
if (!betterTitleMatch && (title == null || title.getValue() == null || title.getValue().trim().equals("") || preferredLanguage.equals(tripleBean.getLang()) || tripleBean.getLang().equals("en"))) {
title = tripleBean;
if (preferredLanguage.equals(tripleBean.getLang())) {
betterTitleMatch = true;
}
}
}
if (title != null) {
literals.add(title);
}
}
result.setLiterals(IRI, literals);
return result;
}
public ResultBean buildHtmlInverseResource(String IRI, String property, int start, Locale locale, ConfigurationBean conf, OntologyBean ontoBean) throws Exception {
ResultBean result = new ResultBean();
SPARQLEndPoint se = new SPARQLEndPoint(conf, ontoBean, locale.getLanguage());
String preferredLanguage = conf.getPreferredLanguage();
if (preferredLanguage.equals("auto")) {
preferredLanguage = locale.getLanguage();
}
if (property == null) {
/* counting */
List<TripleBean> resources = new ArrayList<TripleBean>();
List<TripleBean> triples = new ArrayList<TripleBean>();
if (conf.getEndPointUrl().equals("<>")) {
/* looking for data via content negotiation */
Model m = ModelFactory.createDefaultModel();
try {
m.read(IRI);
} catch (Exception e) {
throw new Exception(messageSource.getMessage("error.noContentNegotiation", null, "sorry but content negotiation is not supported by the IRI", locale));
}
triples = se.doLocalQuery(m, IRI, conf.getDefaultInversesCountQueries());
} else {
triples = se.doQuery(IRI, conf.getDefaultInversesCountQueries(), null);
}
for (TripleBean tripleBean : triples) {
if (tripleBean.getType().equals("literal")) {
resources.add(tripleBean);
}
}
result.setResources(IRI, resources);
} else {
/* listing */
List<TripleBean> resources = new ArrayList<TripleBean>();
List<TripleBean> triples = new ArrayList<TripleBean>();
if (conf.getEndPointUrl().equals("<>")) {
/* looking for data via content negotiation */
Model m = ModelFactory.createDefaultModel();
try {
m.read(IRI);
} catch (Exception e) {
throw new Exception(messageSource.getMessage("error.noContentNegotiation", null, "sorry but content negotiation is not supported by the IRI", locale));
}
triples = se.doLocalQuery(m, IRI, property, start, conf.getDefaultInversesQueries(), null);
} else {
triples = se.doQuery(IRI, property, start, conf.getDefaultInversesQueries(), null, null);
}
Map<String, TripleBean> controlList = new HashMap<String, TripleBean>();
for (TripleBean tripleBean : triples) {
if (tripleBean.getType().equals("literal")) {
if (controlList.get(tripleBean.getProperty().getProperty()) == null || preferredLanguage.equals(tripleBean.getLang())) {
controlList.put(tripleBean.getProperty().getProperty(), tripleBean);
}
}
}
for (String at : controlList.keySet()) {
resources.add(controlList.get(at));
}
result.setResources(IRI, resources);
}
return result;
}
public ResultBean buildHtmlInverseResource(String IRI, Locale locale, ConfigurationBean conf, OntologyBean ontoBean) throws Exception {
return buildHtmlInverseResource(IRI, null, -1, locale, conf, ontoBean);
}
}
