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

Introduction

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

Prototype

public static <T> Optional<T> fromNullable(@Nullable T nullableReference)

Source Link

Document

If nullableReference is non-null, returns an Optional instance containing that reference; otherwise returns Optional#absent .

Usage

From source file:com.kegare.caveworld.util.Version.java

private static void initialize() {
    CURRENT = Optional.of(Strings.nullToEmpty(Caveworld.metadata.version));
    LATEST = Optional.fromNullable(CURRENT.orNull());

    ModContainer mod = CaveUtils.getModContainer();
    File file = mod == null ? null : mod.getSource();

    if (file != null && file.exists()) {
        if (file.isFile()) {
            String name = FilenameUtils.getBaseName(file.getName());

            if (StringUtils.endsWithIgnoreCase(name, "dev")) {
                DEV_DEBUG = true;//from  w  ww  .  jav a2 s.  c  o  m
            }
        } else if (file.isDirectory()) {
            DEV_DEBUG = true;
        }
    } else if (!FMLForgePlugin.RUNTIME_DEOBF) {
        DEV_DEBUG = true;
    }

    if (Caveworld.metadata.version.endsWith("dev")) {
        DEV_DEBUG = true;
    } else if (DEV_DEBUG) {
        Caveworld.metadata.version += "-dev";
    }
}

From source file:io.urmia.util.ArgumentParseUtil.java

static Optional<String> getArgument(String[] args, String shortName, String longName) {
    int i = 0;/*from w  w w.ja  v  a  2 s  .  c  o m*/

    while (i < args.length && args[i].startsWith("-")) {
        String arg = args[i++];

        if (arg.equals(shortName) || arg.equals(longName))
            if (i < args.length)
                return Optional.fromNullable(args[i]);
    }

    return Optional.absent();
}

From source file:org.ctoolkit.services.endpoints.TransformerHelper.java

/**
 * Converts to <code>Boolean</code> value if presented.
 *
 * @param map the map of properties taken from input JSON
 * @param key the JSON property as a key
 * @return the optional <code>Boolean</code> value
 *//* w  ww .  j  a v  a 2  s  .com*/
public static Optional<Boolean> toBoolean(Map<String, Object> map, String key) {
    checkNotNull(key);
    return Optional.fromNullable((Boolean) map.get(key));
}

From source file:org.atlasapi.application.MongoSourceLicenseStore.java

@Override
public Optional<SourceLicense> licenseFor(Publisher source) {
    return Optional.fromNullable(
            translator.fromDBObject(sourceLicenses.findOne(where().idEquals(source.key()).build())));
}

From source file:org.spongepowered.api.entity.living.meta.OcelotTypes.java

public static Optional<OcelotType> valueOf(String name) {
    return Optional.fromNullable(null);
}

From source file:com.github.fge.grappa.transform.LoadingOpcode.java

public static int forType(@Nonnull Type type) {
    Objects.requireNonNull(type);
    // Will throw IllegalStateException if optional .isAbsent()
    return Optional.fromNullable(LOADING_OPCODES.get(type.getSort())).get();
}

From source file:org.opendaylight.yangtools.yang.data.impl.codec.BitsStringCodec.java

static TypeDefinitionAwareCodec<?, BitsTypeDefinition> from(final BitsTypeDefinition normalizedType) {
    return new BitsStringCodec(Optional.fromNullable(normalizedType));
}

From source file:io.brooklyn.camp.dto.ApiErrorDto.java

/**
 * @return An {@link ApiErrorDto.Builder} whose message is initialised to either the throwable's
 *         message or the throwable's class name if the message is null and whose details are
 *         initialised to the throwable's stack trace.
 *///  w ww . j ava  2 s.  c  o  m
public static Builder fromThrowable(Throwable t) {
    checkNotNull(t, "throwable");
    String message = Optional.fromNullable(t.getMessage()).or(t.getClass().getName());
    return builder().message(message).details(Throwables.getStackTraceAsString(t));
}

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

ThermalExpansionAPI() {
    try {//w w w  . jav  a 2s  . c  om
        final Class cls = Class.forName("thermalexpansion.api.crafting.CraftingHelpers");
        addSawmillLogToPlankRecipe = Optional
                .fromNullable(cls.getMethod("addSawmillLogToPlankRecipe", ItemStack.class, ItemStack.class));
        craftingHelpers = Optional.of(cls.newInstance());
    } catch (final Exception e) {
        e.printStackTrace();
        craftingHelpers = Optional.absent();
        addSawmillLogToPlankRecipe = Optional.absent();
    }
}

From source file:com.almuradev.guide.content.PageRegistry.java

public static Optional<Page> removePage(String identifier) {
    return Optional.fromNullable(PAGES.remove(identifier));
}