Example usage for java.util Optional get

Introduction

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

Prototype

public T get()

Source Link

Document

If a value is present, returns the value, otherwise throws NoSuchElementException .

Usage

From source file:net.sf.jabref.logic.exporter.CustomExportList.java

private void readPrefs(JabRefPreferences prefs) {
    formats.clear();/*from  ww  w .  j  ava2  s.c o  m*/
    list.clear();
    int i = 0;
    List<String> s;
    while (!((s = prefs.getStringList(JabRefPreferences.CUSTOM_EXPORT_FORMAT + i)).isEmpty())) {
        Optional<ExportFormat> format = createFormat(s);
        if (format.isPresent()) {
            formats.put(format.get().getConsoleName(), format.get());
            list.add(s);
        } else {
            String customExportFormat = prefs.get(JabRefPreferences.CUSTOM_EXPORT_FORMAT + i);
            LOGGER.error("Error initializing custom export format from string " + customExportFormat);
        }
        i++;
    }
}

From source file:com.devicehive.application.security.WebSecurityConfig.java

@Bean
public AuthenticationEntryPoint unauthorizedEntryPoint() {
    return (request, response, authException) -> {
        Optional<String> authHeader = Optional.ofNullable(request.getHeader(HttpHeaders.AUTHORIZATION));
        if (authHeader.isPresent() && authHeader.get().startsWith(Constants.TOKEN_SCHEME)) {
            response.addHeader(HttpHeaders.WWW_AUTHENTICATE, Messages.OAUTH_REALM);
        } else {//  ww w  .  ja v  a 2s .c  o m
            response.addHeader(HttpHeaders.WWW_AUTHENTICATE, Messages.BASIC_REALM);
        }
        response.setContentType(MediaType.APPLICATION_JSON_VALUE);
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        response.getOutputStream().println(gson
                .toJson(new ErrorResponse(HttpServletResponse.SC_UNAUTHORIZED, authException.getMessage())));
    };
}

From source file:com.ikanow.aleph2.security.db.AbstractDb.java

public Object loadBySpec(QueryComponent<JsonNode> spec) {
    Session s = null;/*from  ww  w.j  a  va2  s.  com*/
    try {
        Optional<JsonNode> ojs = getStore().getObjectBySpec(spec).get();
        if (ojs.isPresent()) {
            s = (Session) deserialize(ojs.get());
        }
    } catch (Exception e) {
        logger.error("Caught Exception loading from db:", e);
    }
    return s;
}

From source file:net.sf.jabref.exporter.CustomExportList.java

private void readPrefs() {
    formats.clear();//  ww  w. j  a  va  2  s .  c  o  m
    list.clear();
    int i = 0;
    List<String> s;
    while (!((s = Globals.prefs.getStringList(JabRefPreferences.CUSTOM_EXPORT_FORMAT + i)).isEmpty())) {
        Optional<ExportFormat> format = createFormat(s);
        if (format.isPresent()) {
            formats.put(format.get().getConsoleName(), format.get());
            list.add(s);
        } else {
            String customExportFormat = Globals.prefs.get(JabRefPreferences.CUSTOM_EXPORT_FORMAT + i);
            LOGGER.error("Error initializing custom export format from string " + customExportFormat);
        }
        i++;
    }
}

From source file:ch.zweivelo.renderer.simple.shapes.PlaneTest.java

@Test
public void testCalculateIntersectionDistance() throws Exception {

    Optional<Double> doubleOptional = plane.calculateIntersectionDistance(ray);

    assertNotNull(doubleOptional);//w  w  w .  j a va2 s  .c  o m
    assertTrue(doubleOptional.isPresent());
    assertEquals(1d, doubleOptional.get(), EPSILON);
}

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 w  w w.jav  a2  s  .  com

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

From source file:org.trustedanalytics.servicebroker.yarn.config.HadoopConfig.java

@Bean
public Configuration getHadoopConfiguration() throws LoginException, IOException {
    Configuration hadoopConf = new Configuration(false);
    Optional<Map<String, String>> hadoopParams = HadoopConfigurationHelper
            .getHadoopConfFromJson(configuration.getYarnProvidedParams());
    HadoopConfigurationHelper.mergeConfiguration(hadoopConf, hadoopParams.get());
    return hadoopConf;
}

From source file:com.uber.hoodie.common.util.ParquetUtils.java

/**
 * Read the rowKey list matching the given filter, from the given parquet file. If the filter is empty,
 * then this will return all the rowkeys.
 *
 * @param filePath              The parquet file path.
 * @param configuration         configuration to build fs object
 * @param filter                record keys filter
 * @return Set                  Set of row keys matching candidateRecordKeys
 *///from   w  w w .j  a v a  2s  . com
public static Set<String> filterParquetRowKeys(Configuration configuration, Path filePath, Set<String> filter) {
    Optional<RecordKeysFilterFunction> filterFunction = Optional.empty();
    if (CollectionUtils.isNotEmpty(filter)) {
        filterFunction = Optional.of(new RecordKeysFilterFunction(filter));
    }
    Configuration conf = new Configuration(configuration);
    conf.addResource(getFs(filePath.toString(), conf).getConf());
    Schema readSchema = HoodieAvroUtils.getRecordKeySchema();
    AvroReadSupport.setAvroReadSchema(conf, readSchema);
    AvroReadSupport.setRequestedProjection(conf, readSchema);
    ParquetReader reader = null;
    Set<String> rowKeys = new HashSet<>();
    try {
        reader = AvroParquetReader.builder(filePath).withConf(conf).build();
        Object obj = reader.read();
        while (obj != null) {
            if (obj instanceof GenericRecord) {
                String recordKey = ((GenericRecord) obj).get(HoodieRecord.RECORD_KEY_METADATA_FIELD).toString();
                if (!filterFunction.isPresent() || filterFunction.get().apply(recordKey)) {
                    rowKeys.add(recordKey);
                }
            }
            obj = reader.read();
        }
    } catch (IOException e) {
        throw new HoodieIOException("Failed to read row keys from Parquet " + filePath, e);

    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException e) {
                // ignore
            }
        }
    }
    return rowKeys;
}

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

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

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

    if (doi.isPresent()) {
        String sciLink = doi.get().getURIAsASCIIString();

        // follow all redirects and scan for a single pdf link
        if (!sciLink.isEmpty()) {
            try {
                Connection connection = Jsoup.connect(sciLink);
                connection.followRedirects(true);
                connection.ignoreHttpErrors(true);
                // some publishers are quite slow (default is 3s)
                connection.timeout(5000);

                Document html = connection.get();
                // scan for PDF
                Elements elements = html.body().select("[href]");
                List<Optional<URL>> links = new ArrayList<>();

                for (Element element : elements) {
                    String href = element.attr("abs:href");
                    // Only check if pdf is included in the link
                    // See https://github.com/lehner/LocalCopy for scrape ideas
                    if (href.contains("pdf") && MimeTypeDetector.isPdfContentType(href)) {
                        links.add(Optional.of(new URL(href)));
                    }//www  .  j a v  a 2  s .  c  o  m
                }
                // return if only one link was found (high accuracy)
                if (links.size() == 1) {
                    LOGGER.info("Fulltext PDF found @ " + sciLink);
                    pdfLink = links.get(0);
                }
            } catch (IOException e) {
                LOGGER.warn("DoiResolution fetcher failed: ", e);
            }
        }
    }
    return pdfLink;
}