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.opendaylight.controller.config.yangjmxgenerator.plugin.java.GeneratedObjectBuilder.java

private static String maybeAddComment(Optional<String> comment, boolean isJavadoc) {
    if (comment.isPresent()) {
        String input = comment.get();
        return StringUtil.writeComment(input, isJavadoc);
    } else {/*from  w  ww .  ja va 2 s.  co m*/
        return "";
    }
}

From source file:io.crate.planner.Limits.java

public static Optional<Symbol> mergeAdd(Optional<Symbol> s1, Optional<Symbol> s2) {
    if (s1.isPresent()) {
        if (s2.isPresent()) {
            return Optional.of(AddFunction.of(s1.get(), s2.get()));
        }/*from ww  w  .  ja va 2s  .co  m*/
        return s1;
    }
    return s2;
}

From source file:io.urmia.md.model.job.JobGetRequest.java

public static ObjectRequest fromJobGetHttpRequest(String uri) {
    int loc = uri.indexOf("/stor/");
    if (loc <= 0)
        throw new IllegalArgumentException("invalid job get uri: " + uri);

    String path = uri.substring(loc + 5);
    Optional<ObjectName> on = ObjectName.of(path);
    if (!on.isPresent())
        throw new IllegalArgumentException("invalid job get path: " + path);

    return new ObjectRequest(on.get());
}

From source file:org.pau.assetmanager.utils.UserUtil.java

/**
 * @return the current user that is logged in in the application
 * WATCH OUT: To call the method the thread should be running in a servlet container in a ZK environment.
 */// w  w w  .j a v  a  2s  .c  om
public static User getExecutionUser() {
    String username = Executions.getCurrent().getUserPrincipal().getName();
    Optional<User> optionalUser = UsersBusiness.getUserByUsername(username);
    if (optionalUser.isPresent()) {
        return optionalUser.get();
    } else {
        String message = "The execution user with name '" + username + "' does not exist in the database";
        logger.error(message);
        throw new AssetManagerRuntimeException(message);
    }
}

From source file:org.locationtech.geogig.storage.impl.Blobs.java

public static List<String> readLines(Optional<byte[]> blob) {
    List<String> lines = ImmutableList.of();
    if (blob.isPresent()) {
        String contents = new String(blob.get(), Charsets.UTF_8);
        lines = Splitter.on("\n").splitToList(contents);
    }/*  ww  w.  j a  v  a 2s  . c o m*/
    return lines;
}

From source file:com.eucalyptus.auth.euare.EuareRemoteRegionFilter.java

private static boolean isNonLocalRegion(final Optional<RegionInfo> regionInfo) {
    return regionInfo.isPresent()
            && !RegionConfigurations.getRegionName().asSet().contains(regionInfo.get().getName());
}

From source file:org.raml.jaxrs.model.HttpVerb.java

/**
 * Same as {@link #fromString(String)}, but throws if there is no corresponding verb.
 *
 * @param httpMethod the method to pair//from ww  w  . j a v  a 2 s .com
 * @return the corresponding http verb
 * @throws NoSuchElementException if there is no corresponding verb
 */
public static HttpVerb fromStringUnchecked(String httpMethod) {
    Optional<HttpVerb> verb = fromString(httpMethod);

    if (verb.isPresent())
        return verb.get();

    throw new NoSuchElementException(String.format("invalid http method: %s", httpMethod));
}

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

public static DockerActivationInfo inject(final ActivationInfo info, final String containerIdentity,
        final DockerClient client) {
    Optional<Container> c = client.inspectContainer(containerIdentity);
    if (c.isPresent()) {
        DockerActivationInfo.instance(info, c.get()).inject();
    }//from   w  ww  .  ja v a  2 s.c o m
    return DockerActivationInfo.instance(info, null);
}

From source file:org.opendaylight.protocol.bgp.openconfig.impl.openconfig.BGPNeighborProviderImpl.java

private static String getPasswor(final Optional<Rfc2385Key> maybePassword) {
    if (maybePassword.isPresent()) {
        return maybePassword.get().getValue();
    }/*from  ww w .ja  v a2s  .c om*/
    return null;
}

From source file:com.eucalyptus.util.FUtils.java

/**
 * Flatten a nested optional./* w  w w. java 2s.  c  om*/
 *
 * @param option The optional to flatten
 * @param <T> The resulting optional type
 * @return The optional
 */
@Nonnull
public static <T> Optional<T> flatten(@Nullable final Optional<? extends Optional<T>> option) {
    if (option != null && option.isPresent()) {
        return option.get();
    }
    return Optional.absent();
}