public void setExamples(List<String> posExamples, List<String> negExamples) {
try {
exampleFinder.setExamples(posExamples, negExamples);
} catch (Exception e) {
logger.error("Error while setting positive and negative examples.", e);
}
}
public Example getSimilarExample(List<String> posExamples, List<String> negExamples)
throws AutoSPARQLException {
if (negExamples.isEmpty()) {
// negExamples = getIntermediateNegativeExamples(posExamples);
}
Example example;
try {
example = exampleFinder.findSimilarExample(posExamples, negExamples);
examplesCache.put(example.getURI(), example);
return example;
} catch (EmptyLGGException e) {
logger.error(e);
throw new AutoSPARQLException(
"You selected some positive examples, which seem to have nothing in "
+ "common with respect to the target concept.");
} catch (NegativeTreeCoverageExecption e) {
logger.error(e);
throw new AutoSPARQLException(
"The query of the currently selected positive examples covers the negative example \""
+ e.getCoveredNegativeExample()
+ "\".");
} catch (TimeOutException e) {
logger.error(e);
throw new AutoSPARQLException(
"The computation of a new suggestion needs too much time. Please add manually more positive examples.");
} catch (Exception e) {
logger.error("Error while computing similar example.", e);
throw new AutoSPARQLException("An error occured while generating a new suggestion.");
}
}
public void saveSPARQLQuery(Store store) throws AutoSPARQLException {
List<Example> posExamples = new ArrayList<Example>();
for (String uri : exampleFinder.getPositiveExamples()) {
posExamples.add(examplesCache.get(uri));
}
List<Example> negExamples = new ArrayList<Example>();
for (String uri : exampleFinder.getNegativeExamples()) {
negExamples.add(examplesCache.get(uri));
}
store.saveSPARQLQuery(
question,
exampleFinder.getCurrentQuery(),
endpoint.getLabel(),
posExamples,
negExamples,
exampleFinder.getLastSuggestedExample());
}
public String getCurrentQuery() throws AutoSPARQLException {
try {
// return exampleFinder.getCurrentQueryHTML();
return exampleFinder.getCurrentQuery();
} catch (Exception e) {
logger.error("Error while getting current query.", e);
throw new AutoSPARQLException(e);
}
}
public PagingLoadResult<Example> getCurrentQueryResult(PagingLoadConfig config)
throws SPARQLQueryException {
logger.debug("Retrieving results for current query.");
List<Example> queryResult = new ArrayList<Example>();
String currentQuery = exampleFinder.getCurrentQuery();
logger.debug("Current query:\n");
logger.debug(currentQuery);
int limit = config.getLimit();
int offset = config.getOffset();
int totalLength = 10;
try {
ResultSetRewindable rs =
SparqlQuery.convertJSONtoResultSet(
selectCache.executeSelectQuery(endpoint, getCountQuery(currentQuery)));
totalLength = rs.next().getLiteral(rs.getResultVars().get(0)).getInt();
} catch (Exception e) {
e.printStackTrace();
}
try {
ResultSetRewindable rs =
SparqlQuery.convertJSONtoResultSet(
selectCache.executeSelectQuery(
endpoint, modifyQuery(currentQuery + " LIMIT " + limit + " OFFSET " + offset)));
String uri;
String label = "";
String imageURL = "";
String comment = "";
QuerySolution qs;
while (rs.hasNext()) {
qs = rs.next();
uri = qs.getResource("x0").getURI();
label = qs.getLiteral("label").getLexicalForm();
queryResult.add(new Example(uri, label, imageURL, comment));
}
} catch (Exception e) {
logger.error("Error while getting result for query \n" + currentQuery, e);
}
PagingLoadResult<Example> result = new BasePagingLoadResult<Example>(queryResult);
result.setOffset(offset);
result.setTotalLength(totalLength);
return result;
}
public void setQuestion(String question) {
this.question = question;
exampleFinder.setQuestion(question);
}