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:net.sf.jabref.logic.xmp.XMPUtil.java

/**
 * Command-line tool for working with XMP-data.
 *
 * Read or write XMP-metadata from or to pdf file.
 *
 * Usage:/*from www  . jav a2  s .c o m*/
 * <dl>
 * <dd>Read from PDF and print as bibtex:</dd>
 * <dt>xmpUtil PDF</dt>
 * <dd>Read from PDF and print raw XMP:</dd>
 * <dt>xmpUtil -x PDF</dt>
 * <dd>Write the entry in BIB given by KEY to the PDF:</dd>
 * <dt>xmpUtil KEY BIB PDF</dt>
 * <dd>Write all entries in BIB to the PDF:</dd>
 * <dt>xmpUtil BIB PDF</dt>
 * </dl>
 *
 * @param args
 *            Command line strings passed to utility.
 * @throws IOException
 *             If any of the given files could not be read or written.
 * @throws TransformerException
 *             If the given BibEntry is malformed.
 */
public static void main(String[] args) throws IOException, TransformerException {

    // Don't forget to initialize the preferences
    if (Globals.prefs == null) {
        Globals.prefs = JabRefPreferences.getInstance();
    }

    switch (args.length) {
    case 0:
        XMPUtil.usage();
        break;
    case 1:

        if (args[0].endsWith(".pdf")) {
            // Read from pdf and write as BibTex
            List<BibEntry> l = XMPUtil.readXMP(new File(args[0]), Globals.prefs);

            BibEntryWriter bibtexEntryWriter = new BibEntryWriter(
                    new LatexFieldFormatter(LatexFieldFormatterPreferences.fromPreferences(Globals.prefs)),
                    false);

            for (BibEntry entry : l) {
                StringWriter sw = new StringWriter();
                bibtexEntryWriter.write(entry, sw, BibDatabaseMode.BIBTEX);
                System.out.println(sw.getBuffer());
            }

        } else if (args[0].endsWith(".bib")) {
            // Read from bib and write as XMP
            try (FileReader fr = new FileReader(args[0])) {
                ParserResult result = BibtexParser.parse(fr);
                Collection<BibEntry> entries = result.getDatabase().getEntries();

                if (entries.isEmpty()) {
                    System.err.println("Could not find BibEntry in " + args[0]);
                } else {
                    System.out.println(XMPUtil.toXMP(entries, result.getDatabase()));
                }
            }
        } else {
            XMPUtil.usage();
        }
        break;
    case 2:
        if ("-x".equals(args[0]) && args[1].endsWith(".pdf")) {
            // Read from pdf and write as BibTex
            Optional<XMPMetadata> meta = XMPUtil.readRawXMP(new File(args[1]));

            if (meta.isPresent()) {
                XMLUtil.save(meta.get().getXMPDocument(), System.out, StandardCharsets.UTF_8.name());
            } else {
                System.err.println("The given pdf does not contain any XMP-metadata.");
            }
            break;
        }

        if (args[0].endsWith(".bib") && args[1].endsWith(".pdf")) {
            ParserResult result = BibtexParser.parse(new FileReader(args[0]));

            Collection<BibEntry> entries = result.getDatabase().getEntries();

            if (entries.isEmpty()) {
                System.err.println("Could not find BibEntry in " + args[0]);
            } else {
                XMPUtil.writeXMP(new File(args[1]), entries, result.getDatabase(), false);
                System.out.println("XMP written.");
            }
            break;
        }

        XMPUtil.usage();
        break;
    case 3:
        if (!args[1].endsWith(".bib") && !args[2].endsWith(".pdf")) {
            XMPUtil.usage();
            break;
        }

        ParserResult result = BibtexParser.parse(new FileReader(args[1]));

        Optional<BibEntry> bibEntry = result.getDatabase().getEntryByKey(args[0]);

        if (bibEntry.isPresent()) {
            XMPUtil.writeXMP(new File(args[2]), bibEntry.get(), result.getDatabase());

            System.out.println("XMP written.");
        } else {
            System.err.println("Could not find BibEntry " + args[0] + " in " + args[0]);
        }
        break;

    default:
        XMPUtil.usage();
    }
}

---

From source file:Main.java

public static <T> Stream<T> toStream(Optional<T> optional) {
    if (optional.isPresent()) {
        return Stream.of(optional.get());
    }/*w  ww.ja v a  2 s. co m*/
    return Stream.empty();
}

---

From source file:Main.java

public static <T> List<T> subListOn(List<T> list, Predicate<T> predicate) {
    Optional<T> first = list.stream().filter(predicate).findFirst();
    if (!first.isPresent())
        return list;
    return list.subList(0, list.indexOf(first.get()));
}

---

From source file:me.ferrybig.javacoding.webmapper.test.session.DefaultDataStorageTest.java

private static <T> T extr(Optional<T> in) {
    if (in.isPresent()) {
        return in.get();
    }/*from   w ww. j a  v  a  2  s . com*/
    return null;
}

---

From source file:Main.java

public static Optional<String> getTextOfElement(List<XMLEvent> events, String elementName) {
    Optional<Characters> characters = getCharacterEventOfElement(events, elementName);

    if (characters.isPresent())
        return Optional.of(characters.get().getData());

    return Optional.empty();
}

---

From source file:com.thoughtworks.go.apiv4.agents.representers.UpdateRequestRepresenter.java

static List<String> extractToList(Optional<JsonArray> arrayOptional) {
    final List<String> treeSet = new ArrayList<>();
    if (arrayOptional.isPresent()) {
        for (JsonElement jsonElement : arrayOptional.get()) {
            treeSet.add(jsonElement.getAsString());
        }// w w w .j  a  va 2s  . c om
    }

    return treeSet;
}

---

From source file:com.schnobosoft.semeval.cortical.PrintCorrelations.java

private static double getPearson(List<Optional> gold, List<Optional> scores) {
    assert gold.size() == scores.size();

    List<Double> gsList = new ArrayList<>(gold.size());
    List<Double> sList = new ArrayList<>(scores.size());

    for (int i = 0; i < gold.size(); i++) {
        Optional goldOpt = gold.get(i);
        Optional scoreOpt = scores.get(i);
        if (goldOpt.isPresent() && scoreOpt.isPresent()) {
            gsList.add((Double) goldOpt.get());
            sList.add((Double) scoreOpt.get());
        } else {/*  ww  w .j  a v a  2 s  .  c o m*/
            LOG.warn("No score found in line " + i + ".");
        }
    }
    return new PearsonsCorrelation().correlation(listToArray(gsList), listToArray(sList));
}

---

From source file:org.trustedanalytics.hadoop.admin.tools.HadoopClientParamsImporter.java

static void performAction(CLIParameters params) throws IOException, XPathExpressionException {
    Optional<InputStream> inputStreamOptional = getSourceInputStream(params);
    if (inputStreamOptional.isPresent()) {
        try (InputStream sourceStream = inputStreamOptional.get()) {
            LOGGER.info(returnJSON(scanConfigZipArchive(sourceStream).get()));
        }//from  w w w .  j  a v a  2  s. c o m
    }
}

---

From source file:com.github.horrorho.inflatabledonkey.cloud.clients.BackupAccountClient.java

public static Optional<BackupAccount> backupAccount(HttpClient httpClient, CloudKitty kitty,
        ProtectionZone zone) throws IOException {

    List<CloudKit.RecordRetrieveResponse> responses = kitty.recordRetrieveRequest(httpClient, "mbksync",
            "BackupAccount");
    logger.debug("-- backupAccount() - responses: {}", responses);

    if (responses.size() != 1) {
        logger.warn("-- backupAccount() - bad response list size: {}", responses);
        return Optional.empty();
    }/*w  ww.j  ava  2  s. co m*/

    CloudKit.ProtectionInfo protectionInfo = responses.get(0).getRecord().getProtectionInfo();

    Optional<ProtectionZone> optionalNewZone = zone.newProtectionZone(protectionInfo);
    if (!optionalNewZone.isPresent()) {
        logger.warn("-- backupAccount() - failed to retrieve protection info");
        return Optional.empty();
    }
    ProtectionZone newZone = optionalNewZone.get();

    BackupAccount backupAccount = BackupAccountFactory.from(responses.get(0).getRecord(),
            (bs, id) -> newZone.decrypt(bs, id).get()); // TODO rework BackupAccount
    logger.debug("-- backupAccount() - backup account: {}", backupAccount);

    return Optional.of(backupAccount);
}

---

From source file:com.ejisto.core.classloading.javassist.ObjectEditor.java

private static boolean hasAlreadyBeenProcessed(FieldAccess f, String fieldName) {
    Optional<String> fieldMarker = getFieldMarker(fieldName);
    return !fieldMarker.isPresent() || Arrays.stream(f.getEnclosingClass().getDeclaredFields())
            .anyMatch(field -> field.getName().equals(fieldMarker.get()));
}

---

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