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.geogit.api.porcelain.ConfigGet.java

/**
 * Executes the config command with the specified options.
 * /*  www . j  a va2s. c o  m*/
 * @return Optional<String> if querying for a value, empty Optional if no matching name was
 *         found.
 * @throws ConfigException if an error is encountered. More specific information can be found in
 *         the exception's statusCode.
 */
@Override
public Optional<String> call() {
    ConfigScope scope = global ? ConfigScope.GLOBAL : ConfigScope.LOCAL;
    Optional<Map<String, String>> result = command(ConfigOp.class).setAction(ConfigAction.CONFIG_GET)
            .setName(name).setScope(scope).call();
    if (result.isPresent()) {
        return Optional.of(result.get().get(name));
    } else {
        return Optional.absent();
    }

}

From source file:fr.javatronic.damapping.test.mappermethod.MultiConstructorWithGenericsAndMultipleParameters.java

@Nullable
public Optional<String> apply(@Nullable Map<C, Set<BigDecimal>> input, Object[] objs) {
    return Optional.of("doesn't matter");
}

From source file:google.registry.tools.params.OptionalParameterConverterValidator.java

@Override
public final Optional<T> convert(String value) {
    if (value.equals(NULL_STRING) || value.isEmpty()) {
        return Optional.absent();
    } else {/*  w w w .  j  a  v  a2s.  com*/
        return Optional.of(validator.convert(value));
    }
}

From source file:fr.javatronic.damapping.test.guava.MultiConstructorWithGenerics.java

@Nullable
@Override//  www. jav a2s . c om
public Optional<String> apply(@Nullable Map<C, Set<BigDecimal>> input) {
    return Optional.of("doesn't matter");
}

From source file:org.geoserver.jdbcstore.H2TestSupport.java

@Override
public void stubConfig(JDBCResourceStoreProperties config) {
    expect(config.getInitScript())/*from  w  ww.  j  av  a  2 s .c o  m*/
            .andStubReturn(URIs.asResource(JDBCResourceStoreProperties.class.getResource("init.h2.sql")));
    expect(config.getJdbcUrl()).andStubReturn(Optional.of("jdbc:h2:mem:test"));
    expect(config.getJndiName()).andStubReturn(Optional.<String>absent());
    expect(config.getProperty(eq("driverClassName"))).andStubReturn("org.h2.Driver");
    expect(config.getProperty(eq("driverClassName"), (String) anyObject())).andStubReturn("org.h2.Driver");
}

From source file:se.sics.ktoolbox.util.config.options.InetAddressOption.java

@Override
public Optional<InetAddress> readValue(Config config) {
    Optional ip = config.readValue(name);

    if (ip.isPresent()) {
        if (ip.get() instanceof InetAddress) {
            return ip;
        } else if (ip.get() instanceof String) {
            try {
                return Optional.of(InetAddress.getByName((String) ip.get()));
            } catch (UnknownHostException ex) {
                throw new RuntimeException(ex);
            }/* w ww  . j  a va2s .c om*/
        }
    }
    return Optional.absent();
}

From source file:com.axemblr.provisionr.api.software.RepositoryBuilder.java

public RepositoryBuilder key(String key) {
    this.key = Optional.of(key);
    return this;
}

From source file:com.infobip.jira.IssueKey.java

/**
 * Generates {@link IssueKey} from {@link Commit changesets} message.
 *
 * @param changeset containing message with Jira issue key
 *
 * @return first {@link IssueKey} that could be extracted, else {@link Optional#absent()}
 *///w w  w  .  java  2 s.  co  m
public static Optional<IssueKey> from(Commit changeset) {

    Matcher matcher = pattern.matcher(changeset.getMessage());

    if (!matcher.find()) {
        return Optional.absent();
    }

    return Optional.of(new IssueKey(new ProjectKey(matcher.group(1)), new IssueId(matcher.group(2))));
}

From source file:org.opendaylight.controller.netconf.cli.reader.impl.DecisionReader.java

public Optional<Boolean> read(final ConsoleIO console, final String questionMessageBlueprint,
        final Object... questionMessageArgs) throws IOException, ReadingException {
    final ConsoleContext ctx = getContext();
    console.enterContext(ctx);/* www  . j  av a  2s  .  c  o m*/
    try {
        console.formatLn(questionMessageBlueprint, questionMessageArgs);
        final String rawValue = console.read();
        if (YES.equals(rawValue.toUpperCase())) {
            return Optional.of(Boolean.TRUE);
        } else if (NO.equals(rawValue.toUpperCase())) {
            return Optional.of(Boolean.FALSE);
        } else if (SKIP.equals(rawValue)) {
            return Optional.absent();
        } else {
            final String message = String.format("Incorrect possibility (%s) was selected", rawValue);
            Log.error(message);
            throw new ReadingException(message);
        }
    } finally {
        console.leaveContext();
    }
}

From source file:gobblin.writer.partitioner.TimeBasedAvroWriterPartitioner.java

private static Optional<List<String>> getWriterPartitionColumns(State state, int numBranches, int branchId) {
    String propName = ForkOperatorUtils.getPropertyNameForBranch(WRITER_PARTITION_COLUMNS, numBranches,
            branchId);/*w w  w . j  av  a  2 s  .  c om*/
    return state.contains(propName) ? Optional.of(state.getPropAsList(propName))
            : Optional.<List<String>>absent();
}