Example usage for java.util Optional isPresent

Introduction

In this page you can find the example usage for java.util Optional isPresent.

Prototype

public boolean isPresent()

Source Link

Document

If a value is present, returns true , otherwise false .

Usage

From source file:com.javaeeeee.repositories.UsersRepositoryTest.java

/**
 * A methods tests that empty optional is returned is user is nonexistent.
 *//*  w w w .  j  a  v  a 2  s  .c o m*/
@Test
public void findByUsernameShouldReturnEmpty() {
    final String name = "Phil";
    entityManager.persist(new User(name, "1"));
    Optional<User> optional = usersRepository.findByUsername(name + "mmm");

    Assert.assertFalse(optional.isPresent());
}

From source file:org.obiba.mica.search.aggregations.TaxonomyAggregationMetaDataProvider.java

private Map<String, LocalizedMetaData> getAllLocalizedMetadata(String aggregation) {
    Optional<Vocabulary> vocabulary = getVocabulary(aggregation);

    if (vocabulary.isPresent()) {
        Map<String, LocalizedMetaData> r = Maps.newHashMap();

        for (Term t : vocabulary.get().getTerms()) {
            LocalizedString title = new LocalizedString();
            title.putAll(t.getTitle());/*from w ww .j a va 2 s.  co  m*/
            LocalizedString description = new LocalizedString();
            description.putAll(t.getDescription());
            String className = t.getAttributeValue("className");
            if (Strings.isNullOrEmpty(className)) {
                className = t.getClass().getSimpleName();
            }
            if (!r.containsKey(t.getName())) {
                r.put(t.getName(), new LocalizedMetaData(title, description, className));
            }
        }

        return r;
    }

    return null;
}

From source file:net.sf.jabref.logic.journals.JournalAbbreviationRepository.java

public Optional<String> getNextAbbreviation(String text) {
    Optional<Abbreviation> abbreviation = getAbbreviation(text);

    if (!abbreviation.isPresent()) {
        return Optional.empty();
    }//from  w ww .j  a  v a2 s  .  c  o m

    Abbreviation abbr = abbreviation.get();
    return Optional.of(abbr.getNext(text));
}

From source file:net.sf.jabref.logic.journals.JournalAbbreviationRepository.java

public Optional<String> getMedlineAbbreviation(String text) {
    Optional<Abbreviation> abbreviation = getAbbreviation(text);

    if (!abbreviation.isPresent()) {
        return Optional.empty();
    }/* w  w w.j  av  a 2s  .c  o m*/

    Abbreviation abbr = abbreviation.get();
    return Optional.of(abbr.getMedlineAbbreviation());
}

From source file:net.sf.jabref.logic.journals.JournalAbbreviationRepository.java

public Optional<String> getIsoAbbreviation(String text) {
    Optional<Abbreviation> abbreviation = getAbbreviation(text);

    if (!abbreviation.isPresent()) {
        return Optional.empty();
    }/* ww w.  j a va 2 s  .c  o  m*/

    Abbreviation abbr = abbreviation.get();
    return Optional.of(abbr.getIsoAbbreviation());
}

From source file:cats.twitter.webapp.controller.module.ApiController.java

@Transactional
@RequestMapping(value = "/api-chain", method = RequestMethod.GET)
public void apiChain(@RequestHeader("token") String token, HttpServletResponse response) {
    Optional<Request> req = reqRepository.findOneByToken(token);
    if (!req.isPresent()) {
        throw new IllegalAccessError("Please verify your token!");
    }/*from   w w w .  j  a v a2  s. c om*/
    String result = null;
    if (req.get().isChained() && req.get().getPreviousRequest() != null) {
        result = req.get().getPreviousRequest().getResult(Result.TypeRes.FILE).getResult();
        try {

            File downloadFile = new File(result);
            FileInputStream inputStream = new FileInputStream(downloadFile);

            // set content attributes for the response
            response.setContentType("text/plain");
            response.setContentLength((int) downloadFile.length());

            // get output stream of the response
            OutputStream outStream = response.getOutputStream();

            byte[] buffer = new byte[BUFFER_SIZE];
            int bytesRead = -1;

            // write bytes read from the input stream into the output stream
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outStream.write(buffer, 0, bytesRead);
            }

            inputStream.close();
            outStream.close();
        } catch (Exception e) {
            Result res = new Result();
            res.setDate(new Date());
            res.setResult(e.getMessage());
            res.setType(Result.TypeRes.ERROR);
            req.get().addResult(res);
            e.printStackTrace();
        }
    }
}

From source file:net.sf.jabref.logic.fulltext.ScienceDirect.java

@Override
public Optional<URL> findFullText(BibEntry entry) throws IOException {
    Objects.requireNonNull(entry);
    Optional<URL> pdfLink = Optional.empty();

    // Try unique DOI first
    Optional<DOI> doi = entry.getFieldOptional(FieldName.DOI).flatMap(DOI::build);

    if (doi.isPresent()) {
        // Available in catalog?
        try {/*from   w w  w  .  j ava2 s  .c  om*/
            String sciLink = getUrlByDoi(doi.get().getDOI());

            if (!sciLink.isEmpty()) {
                // Retrieve PDF link
                Document html = Jsoup.connect(sciLink).ignoreHttpErrors(true).get();
                Element link = html.getElementById("pdfLink");

                if (link != null) {
                    LOGGER.info("Fulltext PDF found @ ScienceDirect.");
                    pdfLink = Optional.of(new URL(link.attr("pdfurl")));
                }
            }
        } catch (UnirestException e) {
            LOGGER.warn("ScienceDirect API request failed", e);
        }
    }
    return pdfLink;
}

From source file:org.ulyssis.ipp.snapshot.TagSeenEvent.java

protected Snapshot doApply(Snapshot snapshot) {
    if (snapshot.getStartTime().isBefore(getTime()) && snapshot.getEndTime().isAfter(getTime())) {
        Optional<Integer> teamNb = snapshot.getTeamTagMap().tagToTeam(tag);
        if (teamNb.isPresent()) {
            Optional<TeamState> teamState = snapshot.getTeamStates().getStateForTeam(teamNb.get());
            TeamState newTeamState;/*from w  w w.ja  v a 2  s .  c om*/
            if (teamState.isPresent()) {
                newTeamState = teamState.get().addTagSeenEvent(snapshot, this);
            } else {
                newTeamState = (new TeamState()).addTagSeenEvent(snapshot, this);
            }
            TeamStates newTeamStates = snapshot.getTeamStates().setStateForTeam(teamNb.get(), newTeamState);
            Snapshot.Builder builder = Snapshot.builder(getTime(), snapshot).withTeamStates(newTeamStates);
            if (snapshot.getStatus().isPublic()) {
                builder.withPublicTeamStates(newTeamStates);
            }
            return builder.build();
        } else {
            return snapshot;
        }
    } else {
        return snapshot;
    }
}

From source file:com.haulmont.cuba.web.gui.icons.IconResolverImpl.java

protected Resource getResource(String iconPath) {
    Optional<IconProvider> provider = iconProviders.stream().filter(p -> p.canProvide(iconPath)).findAny();

    if (provider.isPresent()) {
        return provider.get().getIconResource(iconPath);
    }/*from www .j  a va  2 s. com*/

    log.warn("There is no IconProvider for the given icon: {}", iconPath);
    return null;
}

From source file:fi.helsinki.opintoni.service.UserServiceTest.java

@Test
public void thatUserIsFoundByEduPersonPrincipalName() {
    Optional<User> user = userService.findFirstByEduPersonPrincipalName(EDU_PERSON_PRINCIPAL_NAME);
    assertThat(user.isPresent()).isTrue();
}