/
NTriples.java
697 lines (600 loc) · 18.3 KB
/
NTriples.java
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package benchmark.serializer;
import java.util.Iterator;
import benchmark.model.*;
import benchmark.vocabulary.*;
import benchmark.generator.*;
import java.io.*;
import java.util.*;
public class NTriples implements Serializer {
private FileWriter fileWriter;
private boolean forwardChaining;
private long nrTriples;
public NTriples(String file, boolean forwardChaining)
{
try{
fileWriter = new FileWriter(file);
} catch(IOException e){
System.err.println("Could not open File");
System.exit(-1);
}
this.forwardChaining = forwardChaining;
nrTriples = 0l;
}
@Override
public void gatherData(ObjectBundle bundle) {
Iterator<BSBMResource> it = bundle.iterator();
while(it.hasNext())
{
BSBMResource obj = it.next();
try{
if(obj instanceof ProductType){
fileWriter.append(convertProductType((ProductType)obj));
}
else if(obj instanceof Offer){
fileWriter.append(convertOffer((Offer)obj));
}
else if(obj instanceof Product){
fileWriter.append(convertProduct((Product)obj));
}
else if(obj instanceof Person){
fileWriter.append(convertPerson((Person)obj));
}
else if(obj instanceof Producer){
fileWriter.append(convertProducer((Producer)obj));
}
else if(obj instanceof ProductFeature){
fileWriter.append(convertProductFeature((ProductFeature)obj));
}
else if(obj instanceof Vendor){
fileWriter.append(convertVendor((Vendor)obj));
}
else if(obj instanceof Review){
fileWriter.append(convertReview((Review)obj));
}
}
catch(IOException e){
System.err.println("Could not write into File!");
System.err.println(e.getMessage());
System.exit(-1);
}
}
}
/*
* Converts the ProductType Object into an N-Triples String
* representation.
*/
private String convertProductType(ProductType pType)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = pType.toString();
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(BSBM.ProductType)));
//rdfs:label
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.label),
createLiteral(pType.getLabel())));
//rdfs:comment
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.comment),
createLiteral(pType.getComment())));
//rdfs:subClassOf
if(pType.getParent()!=null)
{
String parentURIREF = createURIref(BSBM.INST_NS, "ProductType"+pType.getParent().getNr());
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.subClassOf),
parentURIREF));
}
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
createURIref(BSBM.getStandardizationInstitution(1))));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(pType.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
/*
* Converts the Offer Object into an N-Triples String
* representation.
*/
private String convertOffer(Offer offer)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = offer.toString();
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(BSBM.Offer)));
//bsbm:product
int productNr = offer.getProduct();
int producerNr = Generator.getProducerOfProduct(productNr);
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.product),
Product.getURIref(productNr, producerNr)));
//bsbm:vendor
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.vendor),
Vendor.getURIref(offer.getVendor())));
//bsbm:price
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.price),
createDataTypeLiteral(offer.getPriceString(),createURIref(BSBM.USD))));
//bsbm:validFrom
GregorianCalendar validFrom = new GregorianCalendar();
validFrom.setTimeInMillis(offer.getValidFrom());
String validFromString = DateGenerator.formatDateTime(validFrom);
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.validFrom),
createDataTypeLiteral(validFromString, createURIref(XSD.DateTime))));
//bsbm:validTo
GregorianCalendar validTo = new GregorianCalendar();
validTo.setTimeInMillis(offer.getValidTo());
String validToString = DateGenerator.formatDateTime(validTo);
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.validTo),
createDataTypeLiteral(validToString, createURIref(XSD.DateTime))));
//bsbm:deliveryDays
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.deliveryDays),
createDataTypeLiteral(offer.getDeliveryDays().toString(), createURIref(XSD.Integer))));
//bsbm:offerWebpage
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.offerWebpage),
createURIref(offer.getOfferWebpage())));
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
Vendor.getURIref(offer.getVendor())));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(offer.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
/*
* Converts the Product Object into an N-Triples String
* representation.
*/
private String convertProduct(Product product)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = product.toString();
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(BSBM.Product)));
//rdfs:label
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.label),
createLiteral(product.getLabel())));
//rdfs:comment
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.comment),
createLiteral(product.getComment())));
//bsbm:productType
if(forwardChaining) {
ProductType pt = product.getProductType();
while(pt!=null) {
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
pt.toString()));
pt = pt.getParent();
}
}
else {
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
product.getProductType().toString()));
}
//bsbm:producer
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.producer),
Producer.getURIref(product.getProducer())));
//bsbm:productPropertyNumeric
Integer[] ppn = product.getProductPropertyNumeric();
for(int i=0,j=1;i<ppn.length;i++,j++)
{
Integer value = ppn[i];
if(value!=null)
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.getProductPropertyNumeric(j)),
createDataTypeLiteral(value.toString(), createURIref(XSD.Integer))));
}
//bsbm:productPropertyTextual
String[] ppt = product.getProductPropertyTextual();
for(int i=0,j=1;i<ppt.length;i++,j++)
{
String value = ppt[i];
if(value!=null)
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.getProductPropertyTextual(j)),
createDataTypeLiteral(value, createURIref(XSD.String))));
}
//bsbm:productFeature
Iterator<Integer> pf = product.getFeatures().iterator();
while(pf.hasNext())
{
Integer value = pf.next();
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.productFeature),
ProductFeature.getURIref(value)));
}
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
Producer.getURIref(product.getProducer())));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(product.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
/*
* Converts the Person Object into an N-Triples String
* representation.
*/
private String convertPerson(Person person)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = person.toString();
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(FOAF.Person)));
//foaf:name
result.append(createTriple(
subjectURIREF,
createURIref(FOAF.name),
createLiteral(person.getName())));
//foaf:mbox_sha1sum
result.append(createTriple(
subjectURIREF,
createURIref(FOAF.mbox_sha1sum),
createLiteral(person.getMbox_sha1sum())));
//bsbm:country
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.country),
createURIref(ISO3166.find(person.getCountryCode()))));
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
RatingSite.getURIref(person.getPublisher())));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(person.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
/*
* Converts the Producer Object into an N-Triples String
* representation.
*/
private String convertProducer(Producer producer)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = producer.toString();
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(BSBM.Producer)));
//rdfs:label
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.label),
createLiteral(producer.getLabel())));
//rdfs:comment
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.comment),
createLiteral(producer.getComment())));
//foaf:homepage
result.append(createTriple(
subjectURIREF,
createURIref(FOAF.homepage),
createURIref(producer.getHomepage())));
//bsbm:country
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.country),
createURIref(ISO3166.find(producer.getCountryCode()))));
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
producer.toString()));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(producer.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
/*
* Converts the ProductFeature Object into an N-Triples String
* representation.
*/
private String convertProductFeature(ProductFeature pf)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = createURIref(BSBM.INST_NS, "ProductFeature"+pf.getNr());
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(BSBM.ProductFeature)));
//rdfs:label
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.label),
createLiteral(pf.getLabel())));
//rdfs:comment
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.comment),
createLiteral(pf.getComment())));
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
createURIref(BSBM.getStandardizationInstitution(pf.getPublisher()))));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(pf.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
/*
* Converts the Vendor Object into an N-Triples String
* representation.
*/
private String convertVendor(Vendor vendor)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = vendor.toString();
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(BSBM.Vendor)));
//rdfs:label
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.label),
createLiteral(vendor.getLabel())));
//rdfs:comment
result.append(createTriple(
subjectURIREF,
createURIref(RDFS.comment),
createLiteral(vendor.getComment())));
//foaf:homepage
result.append(createTriple(
subjectURIREF,
createURIref(FOAF.homepage),
createURIref(vendor.getHomepage())));
//bsbm:country
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.country),
createURIref(ISO3166.find(vendor.getCountryCode()))));
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
vendor.toString()));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(vendor.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
/*
* Converts the Review Object into an N-Triples String
* representation.
*/
private String convertReview(Review review)
{
StringBuffer result = new StringBuffer();
//First the uriref for the subject
String subjectURIREF = review.toString();
//rdf:type
result.append(createTriple(
subjectURIREF,
createURIref(RDF.type),
createURIref(REV.Review)));
//bsbm:reviewFor
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.reviewFor),
Product.getURIref(review.getProduct(), review.getProducerOfProduct())));
//rev:reviewer
result.append(createTriple(
subjectURIREF,
createURIref(REV.reviewer),
Person.getURIref(review.getPerson(), review.getPublisher())));
//bsbm:reviewDate
GregorianCalendar reviewDate = new GregorianCalendar();
reviewDate.setTimeInMillis(review.getReviewDate());
String reviewDateString = DateGenerator.formatDateTime(reviewDate);
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.reviewDate),
createDataTypeLiteral(reviewDateString, createURIref(XSD.DateTime))));
//dc:title
result.append(createTriple(
subjectURIREF,
createURIref(DC.title),
createLiteral(review.getTitle())));
//rev:text
result.append(createTriple(
subjectURIREF,
createURIref(REV.text),
createLanguageLiteral(review.getText(),ISO3166.language[review.getLanguage()])));
//bsbm:ratingX
Integer[] ratings = review.getRatings();
for(int i=0,j=1;i<ratings.length;i++,j++)
{
Integer value = ratings[i];
if(value!=null)
result.append(createTriple(
subjectURIREF,
createURIref(BSBM.getRating(j)),
createDataTypeLiteral(value.toString(), createURIref(XSD.Integer))));
}
//dc:publisher
result.append(createTriple(
subjectURIREF,
createURIref(DC.publisher),
RatingSite.getURIref(review.getPublisher())));
//dc:date
GregorianCalendar date = new GregorianCalendar();
date.setTimeInMillis(review.getPublishDate());
String dateString = DateGenerator.formatDate(date);
result.append(createTriple(
subjectURIREF,
createURIref(DC.date),
createDataTypeLiteral(dateString, createURIref(XSD.Date))));
return result.toString();
}
//Create Literal
private String createLiteral(String value)
{
StringBuffer result = new StringBuffer();
result.append("\"");
result.append(value);
result.append("\"");
return result.toString();
}
//Create typed literal
private String createDataTypeLiteral(String value, String datatypeURI)
{
StringBuffer result = new StringBuffer();
result.append("\"");
result.append(value);
result.append("\"^^");
result.append(datatypeURI);
return result.toString();
}
//Create language tagged literal
private String createLanguageLiteral(String text, String languageCode)
{
StringBuffer result = new StringBuffer();
result.append("\"");
result.append(text);
result.append("\"@");
result.append(languageCode);
return result.toString();
}
//Creates a triple
private String createTriple(String subject, String predicate, String object)
{
StringBuffer result = new StringBuffer();
result.append(subject);
result.append(" ");
result.append(predicate);
result.append(" ");
result.append(object);
result.append(" .\n");
nrTriples++;
return result.toString();
}
//Create URIREF from namespace and element
private String createURIref(String namespace, String element)
{
StringBuffer result = new StringBuffer();
result.append("<");
result.append(namespace);
result.append(element);
result.append(">");
return result.toString();
}
//Create URIREF from URI
private String createURIref(String uri)
{
StringBuffer result = new StringBuffer();
result.append("<");
result.append(uri);
result.append(">");
return result.toString();
}
@Override
public void serialize() {
//Close File
try {
fileWriter.flush();
fileWriter.close();
} catch(IOException e) {
System.err.println(e.getMessage());
System.exit(-1);
}
}
@Override
public Long triplesGenerated() {
return nrTriples;
}
}