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.opennms.newts.rest.Transform.java

static Optional<Timestamp> toTimestamp(Optional<TimestampParam> value) {
    return value.isPresent() ? Optional.of(value.get().get()) : Optional.<Timestamp>absent();
}

From source file:org.eclipse.recommenders.examples.models.MappingWorkFlowExample.java

public static void useOfMapping(final IMappingProvider mapping) {
    DependencyInfo ed = null;//w  w w .ja v  a 2  s . c o m

    mapping.addStrategy(new MavenPomPropertiesStrategy());

    IProjectCoordinateResolver mappingStrategy = mapping;

    Optional<ProjectCoordinate> optionalProjectCoordinate = mappingStrategy.searchForProjectCoordinate(ed);

    ProjectCoordinate projectCoordinate = null;
    if (optionalProjectCoordinate.isPresent()) {
        projectCoordinate = optionalProjectCoordinate.get();
    }
}

From source file:springfox.bean.validators.plugins.BeanValidators.java

public static <T extends Annotation> Optional<T> validatorFromField(ModelPropertyContext context,
        Class<T> annotationType) {

    Optional<AnnotatedElement> annotatedElement = context.getAnnotatedElement();
    Optional<T> notNull = Optional.absent();
    if (annotatedElement.isPresent()) {
        notNull = Optional.fromNullable(annotatedElement.get().getAnnotation(annotationType));
    }//from   w w w  . j ava 2s .  c  o m
    return notNull;
}

From source file:org.sonar.server.ws.WsUtils.java

public static <T> T checkFoundWithOptional(java.util.Optional<T> value, String message,
        Object... messageArguments) {
    if (!value.isPresent()) {
        throw new NotFoundException(format(message, messageArguments));
    }//  w  w w . ja v  a 2s .com

    return value.get();
}

From source file:com.facebook.buck.java.DiagnosticPrettyPrinter.java

private static void appendContext(StringBuilder builder, Diagnostic<? extends JavaFileObject> diagnostic,
        @Nullable JavaFileObject source) {

    if (source == null) {
        return;/*from  w  w w  . jav a 2s.  c  o m*/
    }

    Optional<String> line = getLine(source, diagnostic.getLineNumber());
    if (line.isPresent()) {
        builder.append(line.get()).append("\n");
        for (long i = 1; i < diagnostic.getColumnNumber(); i++) {
            builder.append(" ");
        }
        builder.append("^");
    }
}

From source file:com.empcraft.xpbank.util.ChunkUtil.java

public static Collection<Chunk> getLoadedChunksAroundLocation(Location loc, ExpBankConfig config) {
    Preconditions.checkNotNull(loc);//w  ww  .j av  a2 s .  co  m
    final List<Chunk> chunkAroundList = new ArrayList<>();
    final World world = loc.getWorld();

    /*
     * In a imaginary 9x9 board, the player stands in the middle.
     * This small piece of code will check if nearby chunks in this board are loaded.
     * If so, they will be added to the around list.
     */
    for (int x = -1; x <= 1; x++) {
        for (int z = -1; z <= 1; z++) {
            config.getLogger().log(Level.FINER, "Requesting Chunk at X:[" + x + "], Z:[" + z + "].");
            Optional<Chunk> chunk = getLoadedChunk(world, loc.clone().add(x * 16.0D, 0.0D, z * 16.0D));

            if (chunk.isPresent()) {
                chunkAroundList.add(chunk.get());
            }
        }
    }

    return chunkAroundList;
}

From source file:org.dswarm.graph.gdm.utils.NodeTypeUtils.java

public static Optional<NodeType> getNodeType(final Optional<Node> optionalNode,
        final Optional<Boolean> optionalIsType) {

    if (!optionalNode.isPresent()) {

        return Optional.absent();
    }//from w ww. j av a 2 s. c  o m

    return getNodeTypeByGDMNodeType(Optional.of(optionalNode.get().getType()), optionalIsType);
}

From source file:google.registry.config.YamlUtils.java

/**
 * Recursively merges two YAML documents together.
 *
 * <p>Any fields that are specified in customYaml will override fields of the same path in
 * defaultYaml. Additional fields in customYaml that aren't specified in defaultYaml will be
 * ignored. The schemas of all fields that are present must be identical, e.g. it is an error to
 * override a field that has a Map value in the default YAML with a field of any other type in the
 * custom YAML./*from  ww w. ja  v  a2  s  .co  m*/
 *
 * <p>Only maps are handled recursively; lists are simply overridden in place as-is, as are maps
 * whose name is suffixed with "Map" -- this allows entire maps to be overridden, rather than
 * merged.
 */
static String mergeYaml(String defaultYaml, String customYaml) {
    Yaml yaml = new Yaml();
    Map<String, Object> yamlMap = loadAsMap(yaml, defaultYaml).get();
    Optional<Map<String, Object>> customMap = loadAsMap(yaml, customYaml);
    if (customMap.isPresent()) {
        yamlMap = mergeMaps(yamlMap, customMap.get());
        logger.infofmt("Successfully loaded environment configuration YAML file.");
    } else {
        logger.infofmt("Ignoring empty environment configuration YAML file.");
    }
    return yaml.dump(yamlMap);
}

From source file:gobblin.hive.HiveSchemaManager.java

/**
 * Get an instance of {@link HiveSchemaManager}.
 *
 * @param type The {@link HiveSchemaManager} type. It could be AVRO, NOP or the name of a class that implements
 * {@link HiveSchemaManager}. The specified {@link HiveSchemaManager} type must have a constructor that takes a
 * {@link State} object.//  w ww .  j a  v a2s .c  om
 * @param props A {@link State} object used to instantiate {@link HiveSchemaManager}.
 */
public static HiveSchemaManager getInstance(String type, State props) {
    Optional<Implementation> implementation = Enums.getIfPresent(Implementation.class, type.toUpperCase());
    if (implementation.isPresent()) {
        try {
            return (HiveSchemaManager) ConstructorUtils
                    .invokeConstructor(Class.forName(implementation.get().toString()), props);
        } catch (ReflectiveOperationException e) {
            throw new RuntimeException(
                    "Unable to instantiate " + HiveSchemaManager.class.getSimpleName() + " with type " + type,
                    e);
        }
    } else {
        log.info(String.format("%s with type %s does not exist. Using %s",
                HiveSchemaManager.class.getSimpleName(), type, HiveNopSchemaManager.class.getSimpleName()));
        return new HiveNopSchemaManager(props);
    }
}

From source file:org.opendaylight.netvirt.openstack.netvirt.NetvirtProvider.java

public static boolean isMasterProviderInstance() {
    if (entityOwnershipService != null) {
        Optional<EntityOwnershipState> state = entityOwnershipService.getOwnershipState(ownerInstanceEntity);
        return state.isPresent() && state.get().isOwner();
    }//from w  w  w. ja  va 2s. c  o m
    return false;
}