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:fathom.rest.controller.extractors.AuthExtractor.java

@Override
public Account extract(Context context) {
    Account session = context.getSession(AuthConstants.ACCOUNT_ATTRIBUTE);
    Account local = context.getLocal(AuthConstants.ACCOUNT_ATTRIBUTE);
    Account account = Optional.fromNullable(session).or(Optional.fromNullable(local).or(Account.GUEST));
    return account;
}

From source file:com.vmware.photon.controller.apife.db.dao.AttachedDiskDao.java

public Optional<AttachedDiskEntity> findByDisk(BaseDiskEntity disk) {
    Query query;/*  www  .ja v a2  s  . c om*/
    switch (disk.getKind()) {
    case PersistentDisk.KIND:
        query = namedQuery("AttachedDisk.findByPersistentDisk");
        break;
    case EphemeralDisk.KIND:
        query = namedQuery("AttachedDisk.findByEphemeralDisk");
        break;
    default:
        throw new IllegalArgumentException(disk.getKind());
    }

    return Optional.fromNullable(uniqueResult(query.setString("diskId", disk.getId())));
}

From source file:com.google.security.zynamics.binnavi.disassembly.types.RawTypeMember.java

public RawTypeMember(final int id, final String name, final int baseTypeId, final Integer parentId,
        final Integer offset, final Integer argument, final Integer numberOfElements) {
    this.id = id;
    this.name = Preconditions.checkNotNull(name, "Error: name can not be null");
    this.baseTypeId = baseTypeId;
    this.parentId = parentId;
    Preconditions.checkArgument(offset == null || offset >= 0, "Error: offset must be positive.");
    this.offset = Optional.fromNullable(offset);
    this.argument = Optional.fromNullable(argument);
    Preconditions.checkArgument(numberOfElements == null || numberOfElements >= 0,
            "Error: number of elements must be null or greater than zero.");
    Preconditions.checkArgument(!Objects.equals(numberOfElements, offset) ^ this.argument.isPresent(),
            "Error: Either this is a struct member or a array member, or a prototype argument.");
    this.numberOfElements = Optional.fromNullable(numberOfElements);
}

From source file:org.cloudifysource.cosmo.kvstore.KVStore.java

@Override
public Optional<EntityTag> getEntityTag(URI key) {
    EntityTag etag = null;/*from  w ww.ja  v  a  2  s . com*/
    final EntityTagState<String> value = store.get(key);
    if (value != null) {
        etag = value.getEntityTag();
    }
    return Optional.fromNullable(etag);
}

From source file:com.spotify.helios.common.descriptors.PortMapping.java

public PortMapping(@JsonProperty("internalPort") final int internalPort,
        @JsonProperty("externalPort") final Integer externalPort,
        @JsonProperty("protocol") final String protocol) {
    this.internalPort = internalPort;
    this.externalPort = externalPort;
    this.protocol = Optional.fromNullable(protocol).or(TCP);
}

From source file:org.opendaylight.yangtools.yang.parser.impl.util.YangSourceFromDependencyInfoResolver.java

@Override
public Optional<YangModelDependencyInfo> getDependencyInfo(final SourceIdentifier identifier) {
    if (identifier.getRevision() != null) {
        return Optional.fromNullable(dependencyInfo.get(identifier));
    }/*from  w ww .ja v a  2s.c o  m*/
    YangModelDependencyInfo potential = dependencyInfo.get(identifier);
    if (potential == null) {
        for (Entry<SourceIdentifier, YangModelDependencyInfo> newPotential : dependencyInfo.entrySet()) {
            String newPotentialName = newPotential.getKey().getName();

            if (newPotentialName.equals(identifier.getName())) {
                String newPotentialRevision = newPotential.getKey().getRevision();
                if (potential == null
                        || 1 == newPotentialRevision.compareTo(potential.getFormattedRevision())) {
                    potential = newPotential.getValue();
                }
            }
        }
    }
    return Optional.fromNullable(potential);
}

From source file:org.eclipse.buildship.ui.view.task.OpenBuildScriptHandler.java

private Optional<File> getBuildScriptFor(ProjectNode projectNode) {
    Maybe<OmniGradleScript> buildScript = projectNode.getGradleProject().getBuildScript();
    return buildScript.isPresent() ? Optional.fromNullable(buildScript.get().getSourceFile())
            : Optional.<File>absent();
}

From source file:it.f2informatica.core.services.UserServiceImpl.java

@Override
public Optional<UserModel> findByUsername(String username) {
    return Optional.fromNullable(userRepositoryGateway.findByUsername(username));
}

From source file:org.apache.aurora.scheduler.zookeeper.guice.client.flagged.FlaggedClientConfig.java

/**
 * Creates a configuration from command line arguments.
 *
 * @return Configuration instance./*  w w  w.  j a  v  a  2  s . c o m*/
 */
public static ClientConfig create() {
    return new ClientConfig(ZK_ENDPOINTS.get(), Optional.fromNullable(CHROOT_PATH.get()), IN_PROCESS.get(),
            SESSION_TIMEOUT.get(),
            DIGEST_CREDENTIALS.hasAppliedValue() ? getCredentials(DIGEST_CREDENTIALS.get()) : Credentials.NONE);
}

From source file:org.auraframework.impl.css.parser.omakase.ThemeMediaQueryList.java

public Optional<MediaQueryList> queryList() {
    return Optional.fromNullable(queryList);
}