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

Introduction

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

Prototype

public abstract boolean isPresent();

Source Link

Document

Returns true if this holder contains a (non-null) instance.

Usage

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

/**
 * Returns the .geogig directory for the platform object.
 *//*from   w w  w .ja  v  a 2 s.  c o m*/
public static File geogigDir(Platform platform) {
    Optional<URL> url = new ResolveGeogigDir(platform).call();
    if (!url.isPresent()) {
        throw new RuntimeException("Unable to resolve .geogig directory");
    }
    try {
        return new File(url.get().toURI());
    } catch (URISyntaxException e) {
        throw new RuntimeException("Error resolving .geogig directory", e);
    }
}

From source file:be.nbb.demetra.dfm.output.news.NewsWeightsViewFactory.java

private static ItemUI<IProcDocumentView<VersionedDfmDocument>, Optional<DfmNews>> newItemUI() {
    return new DefaultItemUI<IProcDocumentView<VersionedDfmDocument>, Optional<DfmNews>>() {
        @Override// w  w w . j av a 2s  .c o m
        public JComponent getView(IProcDocumentView<VersionedDfmDocument> host, Optional<DfmNews> information) {
            if (information.isPresent()) {
                NewsWeightsView v = new NewsWeightsView();
                v.setResults(host.getDocument().getCurrent().getDfmResults(), information.get());
                return v;
            } else {
                JLabel label = new JLabel("No results found", JLabel.CENTER);
                label.setFont(label.getFont().deriveFont(18f));
                return label;
            }
        }
    };
}

From source file:io.mesosphere.mesos.frameworks.cassandra.scheduler.util.Env.java

@NotNull
public static String get(@NotNull final String key) {
    final Optional<String> opt = option(key);
    if (opt.isPresent()) {
        return opt.get();
    } else {/*  w w w . j a v  a2  s.  co m*/
        throw new IllegalStateException(String.format("Environment variable %s is not defined", key));
    }
}

From source file:be.nbb.demetra.dfm.output.news.NewsImpactsViewFactory.java

private static ItemUI<IProcDocumentView<VersionedDfmDocument>, Optional<DfmNews>> newItemUI() {
    return new DefaultItemUI<IProcDocumentView<VersionedDfmDocument>, Optional<DfmNews>>() {
        @Override//from   ww  w. j a  v a 2  s  . com
        public JComponent getView(IProcDocumentView<VersionedDfmDocument> host, Optional<DfmNews> information) {
            if (information.isPresent()) {
                NewsImpactsView v = new NewsImpactsView();
                v.setResults(host.getDocument().getCurrent().getDfmResults(), information.get());
                return v;
            } else {
                JLabel label = new JLabel("No results found", JLabel.CENTER);
                label.setFont(label.getFont().deriveFont(18f));
                return label;
            }
        }
    };
}

From source file:net.caseif.flint.steel.util.helper.ChatHelper.java

private static boolean checkRoundBarrier(Optional<Challenger> ch) {
    return ch.isPresent() && ch.get().getRound().getConfigValue(ConfigNode.SEPARATE_ROUND_CHATS);
}

From source file:org.fabrician.enabler.util.BuildCmdOptions.java

public static String buildAll(RuntimeContext rtc) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < rtc.getVariableCount(); i++) {
        RuntimeContextVariable var = rtc.getVariable(i);
        Optional<String> option = build(var);
        if (option.isPresent()) {
            sb.append(option.get());//from   w ww .j  a  v  a2 s . c  om
        }
    }
    return sb.toString();
}

From source file:org.dswarm.graph.delta.match.model.util.CSEntityUtil.java

public static Optional<? extends Collection<ValueEntity>> getValueEntities(
        final Optional<? extends Collection<CSEntity>> csEntities) {

    if (!csEntities.isPresent() || csEntities.get().isEmpty()) {

        return Optional.absent();
    }/*from   ww w  .j a va  2  s .co  m*/

    final Set<ValueEntity> valueEntities = new HashSet<>();

    for (final CSEntity csEntity : csEntities.get()) {

        valueEntities.addAll(csEntity.getValueEntities());
    }

    return Optional.of(valueEntities);
}

From source file:com.shufudong.GuavaExample.collect.OptionalExample.java

/**
 * @return/* w  w w  . j  ava 2 s  .  c om*/
 * @category <p></p>
 * <ol>
 * <li> boolean isPresent()Optional?T?nulltrueTnullfalse</li>
 * <li>T get()Optional?TT???nullOptionalget()IllegalStateException</li>
 * <li>T or(T)Optional?T?Optional?T?T</li>
 * <li>T orNull()Optional??TOptional?null?fromNullable()</li>
 * <li>Set<T> asSet()??SetSet?Optional??TSet?T??Optional?T??Set</li>
 * </ol>
 * @throw
 */
public static void testMethodReturn() {
    Optional<Long> value = method();
    if (value.isPresent() == true) {
        System.out.println(": " + value.get());
    } else {

        System.out.println(": " + value.or(-12L));
    }

    System.out.println(" orNull: " + value.orNull());

    Optional<Long> valueNoNull = methodNoNull();
    if (valueNoNull.isPresent() == true) {
        Set<Long> set = valueNoNull.asSet();
        System.out.println(" set  size : " + set.size());
        System.out.println(": " + valueNoNull.get());
    } else {
        System.out.println(": " + valueNoNull.or(-12L));
    }

    System.out.println(" orNull: " + valueNoNull.orNull());
}

From source file:org.apache.aurora.scheduler.http.api.security.FieldGetters.java

public static <P extends TBase<P, ?>, C extends TBase<C, ?>, G extends TBase<G, ?>> FieldGetter<P, G> compose(
        final FieldGetter<P, C> parent, final FieldGetter<C, G> child) {

    return new FieldGetter<P, G>() {
        @Override// w w w .j  ava2 s  . com
        public Class<P> getStructClass() {
            return parent.getStructClass();
        }

        @Override
        public Class<G> getValueClass() {
            return child.getValueClass();
        }

        @Override
        public Optional<G> apply(P input) {
            Optional<C> parentValue = parent.apply(input);
            if (parentValue.isPresent()) {
                return child.apply(parentValue.get());
            } else {
                return Optional.absent();
            }
        }
    };
}

From source file:org.spongepowered.api.util.text.OptBool.java

/**
 * Coerces the given {@code Optional&lt;Boolean&gt;} into one of the three stored states.
 *
 * @param bool The boolean/*w  w w  .j  av a 2s. c o m*/
 * @return The constructed Optional, or {@link Optional#absent()}
 */
public static Optional<Boolean> of(Optional<Boolean> bool) {
    if (bool.isPresent()) {
        return of(bool.get().booleanValue());
    } else {
        return ABSENT;
    }
}