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

Introduction

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

Prototype

public static <T> Optional<T> absent()

Source Link

Document

Returns an Optional instance with no contained reference.

Usage

From source file:org.opendaylight.controller.config.facade.xml.mapping.attributes.mapping.CompositeAttributeMappingStrategy.java

@Override
public Optional<Map<String, Object>> mapAttribute(Object value) {
    if (value == null) {
        return Optional.absent();
    }/*w w w.  j a  v a 2s.  c om*/

    Util.checkType(value, CompositeDataSupport.class);

    CompositeDataSupport compositeData = (CompositeDataSupport) value;
    CompositeType currentType = compositeData.getCompositeType();
    CompositeType expectedType = getOpenType();

    Set<String> expectedCompositeTypeKeys = expectedType.keySet();
    Set<String> currentCompositeTypeKeys = currentType.keySet();
    Preconditions.checkArgument(expectedCompositeTypeKeys.equals(currentCompositeTypeKeys),
            "Composite type mismatch, expected composite type with attributes " + expectedCompositeTypeKeys
                    + " but was " + currentCompositeTypeKeys);

    Map<String, Object> retVal = Maps.newHashMap();

    for (String jmxName : jmxToJavaNameMapping.keySet()) {
        Optional<?> mapped = mapInnerAttribute(compositeData, jmxName, expectedType.getDescription(jmxName));
        if (mapped.isPresent()) {
            retVal.put(jmxToJavaNameMapping.get(jmxName), mapped.get());
        }
    }

    return Optional.of(retVal);
}

From source file:org.opendaylight.controller.netconf.confignetconfconnector.mapping.attributes.resolving.EnumAttributeResolvingStrategy.java

@Override
public Optional<Object> parseAttribute(String attrName, Object value) throws NetconfDocumentedException {
    if (value == null) {
        return Optional.absent();
    }/*from  ww  w . j  av  a 2s.c o  m*/

    Util.checkType(value, Map.class);
    Map<?, ?> valueMap = (Map<?, ?>) value;
    Preconditions.checkArgument(valueMap.size() == 1,
            "Unexpected value size " + value + " should be just 1 foe enum");
    final Object innerValue = valueMap.values().iterator().next();
    Util.checkType(innerValue, String.class);

    final String className = getOpenType().getTypeName();
    final Object parsedValue = enumResolver.fromYang(className, ((String) innerValue));

    LOG.debug("Attribute {} : {} parsed to enum type {} with value {}", attrName, innerValue, getOpenType(),
            parsedValue);
    return Optional.of(parsedValue);
}

From source file:com.eucalyptus.auth.AccessKeys.java

/**
 * Get the type for an access key.//w  w  w  .  ja va2 s  . com
 *
 * @param key The key to get the type of
 * @return The optional key type
 */
@Nonnull
public static Optional<TemporaryKeyType> getKeyType(@Nonnull final AccessKey key) {
    Optional<TemporaryKeyType> type = Optional.absent();
    if (key instanceof TemporaryAccessKey) {
        type = Optional.of(((TemporaryAccessKey) key).getType());
    }
    return type;
}

From source file:org.whispersystems.websocket.session.WebSocketSessionContext.java

public <T> Optional<T> getAuthenticated(Class<T> clazz) {
    if (clazz.isInstance(authenticated)) {
        return Optional.fromNullable(clazz.cast(authenticated));
    }/*  w  w  w . ja  va  2s. c  o  m*/

    return Optional.absent();
}

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()}
 *//*from   w w w  .  j a va 2  s.  c om*/
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:hihex.cs.updates.UpdateReadyReceiver.java

@Override
public void onReceive(final Context context, final Intent intent) {
    if (!sLastDownloadId.isPresent()) {
        return;// w  ww  .ja va  2 s .  co m
    }
    final long expectedDownloadId = sLastDownloadId.get();
    final long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, expectedDownloadId - 1);

    if (downloadId != expectedDownloadId) {
        return;
    }

    sLastDownloadId = Optional.absent();

    final DownloadManager downloadManager = (DownloadManager) context
            .getSystemService(Context.DOWNLOAD_SERVICE);
    final DownloadManager.Query query = new DownloadManager.Query();
    query.setFilterById(downloadId);
    final Cursor cursor = downloadManager.query(query);
    if (!cursor.moveToFirst()) {
        return;
    }

    final int statusIndex = cursor.getColumnIndex(DownloadManager.COLUMN_STATUS);
    if (cursor.getInt(statusIndex) != DownloadManager.STATUS_SUCCESSFUL) {
        return;
    }

    final int localFilenameIndex = cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME);
    final String localFilename = cursor.getString(localFilenameIndex);

    final Intent installIntent = new Intent(Intent.ACTION_VIEW);
    installIntent.setDataAndType(Uri.fromFile(new File(localFilename)),
            "application/vnd.android.package-archive");
    installIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    context.startActivity(installIntent);
}

From source file:org.apache.usergrid.corepersistence.pipeline.read.CursorSeek.java

/**
 * Get the seek value to use when searching
 * @return//from w  w  w.j a v  a 2s .  co m
 */
public Optional<C> getSeekValue() {
    final Optional<C> toReturn = seek;

    seek = Optional.absent();

    return toReturn;
}

From source file:io.macgyver.ssh.PubKeyCredentials.java

private Optional<File> locateKeyFile(String username) {
    String home = System.getProperty("user.home", ".");
    File f = new File(home, ".ssh/id_rsa");
    if (f.exists()) {
        return Optional.of(f);
    }/*w w w . j  av a  2  s  .  c  om*/

    f = new File(home, ".ssh/id_dsa");
    if (f.exists()) {
        return Optional.of(f);
    }

    return Optional.absent();
}

From source file:org.whispersystems.websocket.messages.protobuf.ProtobufWebSocketResponseMessage.java

@Override
public Optional<byte[]> getBody() {
    if (message.hasBody()) {
        return Optional.of(message.getBody().toByteArray());
    } else {//from  ww  w . j  ava 2 s.co  m
        return Optional.absent();
    }
}

From source file:com.github.tomakehurst.wiremock.http.ContentTypeHeader.java

public Optional<String> encodingPart() {
    for (int i = 1; i < parts.length; i++) {
        if (parts[i].matches("\\s*charset\\s*=.*")) {
            return Optional.of(parts[i].split("=")[1].replace("\"", ""));
        }/*w ww .  j ava2s  . c  om*/
    }

    return Optional.absent();
}