Example usage for com.google.common.base Optional of

Introduction

In this page you can find the example usage for com.google.common.base Optional of.

Prototype

public static <T> Optional<T> of(T reference)

Source Link

Document

Returns an Optional instance containing the given non-null reference.

Usage

From source file:org.locationtech.geogig.storage.sqlite.SQLiteConflictsDatabase.java

@Override
public Optional<Conflict> getConflict(String namespace, String path) {
    List<Conflict> conflicts = getConflicts(namespace, path);
    if (conflicts.isEmpty()) {
        return Optional.absent();
    }/*ww  w .j a  v  a  2 s.c  o m*/
    return Optional.of(conflicts.get(0));
}

From source file:com.dangdang.ddframe.rdb.sharding.metrics.MetricsContext.java

public MetricsContext(final boolean enable, final long period, final String packageName) {
    if (enable) {
        metricRegistry = Optional.of(new MetricRegistry());
        Slf4jReporter reporter = Slf4jReporter.forRegistry(metricRegistry.get())
                .outputTo(LoggerFactory.getLogger(packageName)).convertRatesTo(TimeUnit.SECONDS)
                .convertDurationsTo(TimeUnit.MILLISECONDS).withLoggingLevel(LoggingLevel.DEBUG).build();
        reporter.start(period, TimeUnit.SECONDS);
    } else {/*from w  ww .  j av a  2  s. c o m*/
        metricRegistry = Optional.absent();
    }
}

From source file:io.crate.sql.tree.AllColumns.java

public AllColumns(QualifiedName prefix) {
    Preconditions.checkNotNull(prefix, "prefix is null");
    this.prefix = Optional.of(prefix);
}

From source file:org.sonar.server.computation.task.projectanalysis.scm.DbScmInfo.java

static Optional<ScmInfo> create(Component component, Iterable<DbFileSources.Line> lines) {
    LineToChangeset lineToChangeset = new LineToChangeset();
    List<Changeset> lineChangesets = StreamSupport.stream(lines.spliterator(), false).map(lineToChangeset)
            .filter(Objects::nonNull).collect(MoreCollectors.toList());
    if (lineChangesets.isEmpty()) {
        return Optional.absent();
    }/*  w w  w.ja v a  2 s  .c  o m*/
    checkState(!lineToChangeset.isEncounteredLineWithoutScmInfo(),
            "Partial scm information stored in DB for component '%s'. Not all lines have SCM info. Can not proceed",
            component);
    return Optional.of(new DbScmInfo(new ScmInfoImpl(lineChangesets)));
}

From source file:org.apache.gobblin.writer.WatermarkAwareWriterWrapper.java

public final void setWatermarkAwareWriter(WatermarkAwareWriter watermarkAwareWriter) {
    this.watermarkAwareWriter = Optional.of(watermarkAwareWriter);
}

From source file:pl.surreal.finance.transaction.auth.UserDBAuthenticator.java

@Override
public Optional<User> authenticate(BasicCredentials basicCredentials) throws AuthenticationException {
    java.util.Optional<User> user = userDAO.findById(basicCredentials.getUsername());
    if (user.isPresent()) {
        if (user.get().getSecret().compareTo(basicCredentials.getPassword()) == 0) {
            return Optional.of(user.get());
        }/*from   ww w .  jav  a2s. c  o m*/
    }
    return Optional.absent();
}

From source file:extrabiomes.module.amica.thermalexpansion.ThermalExpansionPlugin.java

private void addSawmillRecipes() {
    if (!api.isPresent())
        return;/*from  w w  w . jav  a 2 s. co m*/

    addSawmillRecipe(Element.LOG_ACACIA,
            Optional.of(new ItemStack(Stuff.planks.get(), 1, BlockCustomWood.BlockType.ACACIA.metadata())));

    for (final Element input : new Element[] { Element.LOG_FIR, Element.LOG_HUGE_FIR_NE,
            Element.LOG_HUGE_FIR_NW, Element.LOG_HUGE_FIR_SE, Element.LOG_HUGE_FIR_SW })
        addSawmillRecipe(input,
                Optional.of(new ItemStack(Stuff.planks.get(), 1, BlockCustomWood.BlockType.FIR.metadata())));

    for (final Element input : new Element[] { Element.LOG_HUGE_REDWOOD_NE, Element.LOG_HUGE_REDWOOD_NW,
            Element.LOG_HUGE_REDWOOD_SE, Element.LOG_HUGE_REDWOOD_SW })
        addSawmillRecipe(input, Optional
                .of(new ItemStack(Stuff.planks.get(), 1, BlockCustomWood.BlockType.REDWOOD.metadata())));

    for (final Element input : new Element[] { Element.LOG_HUGE_OAK_NE, Element.LOG_HUGE_OAK_NW,
            Element.LOG_HUGE_OAK_SE, Element.LOG_HUGE_OAK_SW })
        addSawmillRecipe(input, Optional.of(new ItemStack(Block.planks)));
}

From source file:com.google.errorprone.matchers.method.StaticMethodMatcherImpl.java

@Override
protected Optional<MatchState> matchResult(ExpressionTree item, MatchState method, VisitorState state) {
    if (!method.sym().isStatic()) {
        return Optional.absent();
    }//www  .ja  v  a  2s.co  m
    return Optional.of(method);
}

From source file:im.dadoo.cas.server.dao.UserDao.java

public Optional<User> findById(int id) {
    Preconditions.checkArgument(id > 0, "id0");
    MapSqlParameterSource sps = new MapSqlParameterSource();
    sps.addValue("id", id);
    List<User> users = this.jdbcTemplate.query(FIND_BY_ID_SQL, sps, this.baseRowMapper);
    if (users != null && !users.isEmpty()) {
        return Optional.of(users.get(0));
    } else {//from w w  w.j a va  2s .  com
        return Optional.absent();
    }
}

From source file:org.opendaylight.yangtools.yang.data.impl.schema.tree.UnorderedLeafSetModificationStrategy.java

@SuppressWarnings({ "unchecked", "rawtypes" })
UnorderedLeafSetModificationStrategy(final LeafListSchemaNode schema, final DataTreeConfiguration treeConfig) {
    super((Class) LeafSetNode.class, treeConfig);
    entryStrategy = Optional.of(new LeafSetEntryModificationStrategy(schema));
}