Example usage for com.google.common.base Strings isNullOrEmpty

Introduction

In this page you can find the example usage for com.google.common.base Strings isNullOrEmpty.

Prototype

public static boolean isNullOrEmpty(@Nullable String string)

Source Link

Document

Returns true if the given string is null or is the empty string.

Usage

From source file:com.netflix.metacat.connector.hive.util.PartitionUtil.java

/**
 * Retrieves the partition values from the partition name. This method also validates the partition keys to that
 * of the table.//from  w w  w  .  j  a v  a2s. com
 *
 * @param tableQName  table name
 * @param table       table
 * @param partName    partition name
 * @return list of partition values
 */
public static List<String> getPartValuesFromPartName(final QualifiedName tableQName, final Table table,
        final String partName) {
    if (Strings.isNullOrEmpty(partName)) {
        throw new InvalidMetaException(tableQName, partName, null);
    }
    final LinkedHashMap<String, String> partSpec = new LinkedHashMap<>();
    Warehouse.makeSpecFromName(partSpec, new Path(partName));
    final List<String> values = new ArrayList<>();
    for (FieldSchema field : table.getPartitionKeys()) {
        final String key = field.getName();
        final String val = partSpec.get(key);
        if (val == null) {
            throw new InvalidMetaException(tableQName, partName, null);
        }
        values.add(val);
    }
    return values;
}

From source file:org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderUtil.java

public static String semanticsProviderNameFromConfiguration(final Class<?> type,
        final IsisConfiguration configuration) {
    final String key = SEMANTICS_PROVIDER_NAME_KEY_PREFIX + type.getCanonicalName()
            + SEMANTICS_PROVIDER_NAME_KEY_SUFFIX;
    final String semanticsProviderName = configuration.getString(key);
    return !Strings.isNullOrEmpty(semanticsProviderName) ? semanticsProviderName : null;
}

From source file:org.zanata.rest.oauth.OAuthUtil.java

public static Optional<String> getAccessTokenFromHeader(HttpServletRequest request) {
    OAuthAccessResourceRequest oauthRequest = null;
    if (!Strings.isNullOrEmpty(request.getHeader(OAuth.HeaderType.AUTHORIZATION))) {

        try {//w w w  . j av  a2  s. com
            // Make the OAuth Request out of this request and validate it
            // Specify where you expect OAuth access token (request header, body or query string)
            oauthRequest = new OAuthAccessResourceRequest(request, ParameterStyle.HEADER);
            return Optional.of(oauthRequest.getAccessToken());
        } catch (OAuthSystemException | OAuthProblemException e) {
            throw new RuntimeException(e);
        }
    }
    log.debug("no Authorization header");
    return Optional.empty();

}

From source file:io.macgyver.core.okhttp3.SoftPropertyConfig.java

public static Optional<Integer> safeIntValue(Properties p, String key) {
    if (p == null || key == null) {
        return Optional.empty();
    }/*from  ww  w .j av  a  2s . co m*/
    String val = p.getProperty(key);
    try {

        if (Strings.isNullOrEmpty(val)) {
            return Optional.empty();
        }
        Integer x = Integer.parseInt(val.trim());

        return Optional.of(x);
    } catch (RuntimeException e) {
        logger.warn("could not parse {} as int", val);
    }

    return Optional.empty();

}

From source file:com.google.firebase.internal.FirebaseScheduledExecutor.java

private static ThreadFactory decorateThreadFactory(ThreadFactory threadFactory, String name,
        Thread.UncaughtExceptionHandler handler) {
    checkArgument(!Strings.isNullOrEmpty(name));
    ThreadFactoryBuilder builder = new ThreadFactoryBuilder().setThreadFactory(threadFactory)
            .setNameFormat(name).setDaemon(true);
    if (handler != null) {
        builder.setUncaughtExceptionHandler(handler);
    }//from  www.  j av  a2 s  .co m
    return builder.build();
}

From source file:org.haiku.haikudepotserver.dataobjects.Pkg.java

public static Optional<Pkg> tryGetByName(ObjectContext context, String name) {
    Preconditions.checkArgument(null != context, "a context must be provided to lookup a package");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(name), "a name must be provided to get a package");

    return Optional.ofNullable(ObjectSelect.query(Pkg.class).where(NAME.eq(name)).sharedCache()
            .cacheGroup(HaikuDepot.CacheGroup.PKG.name()).selectOne(context));
}

From source file:io.sarl.m2e.M2EUtilities.java

/** Maven version parser.
 *
 * @param version - the version string./*from   ww w.j av  a  2s .com*/
 * @return the version.
 */
public static Version parseMavenVersion(String version) {
    if (Strings.isNullOrEmpty(version)) {
        return new Version(0, 0, 0);
    }

    // Detect the snapshot
    boolean isSnapshot;
    String coreVersion;
    Matcher matcher = Artifact.VERSION_FILE_PATTERN.matcher(version);
    if (matcher.matches()) {
        coreVersion = matcher.group(1);
        isSnapshot = true;
    } else {
        matcher = SNAPSHOT_VERSION_PATTERN.matcher(version);
        if (matcher.matches()) {
            coreVersion = matcher.group(1);
            isSnapshot = true;
        } else {
            coreVersion = version;
            isSnapshot = false;
        }
    }

    // Parse the numbers
    String[] parts = coreVersion.split("[.]"); //$NON-NLS-1$
    int[] numbers = new int[] { 0, 0, 0 };
    for (int i = 0; i < numbers.length && i < parts.length; ++i) {
        try {
            int value = Integer.parseInt(parts[i]);
            numbers[i] = value;
        } catch (Exception exception) {
            // Force the exit of the loop since a number cannot be find.
            i = numbers.length;
        }
    }
    // Reply
    if (isSnapshot) {
        return new Version(numbers[0], numbers[1], numbers[2], SNAPSHOT_QUALIFIER);
    }
    return new Version(numbers[0], numbers[1], numbers[2]);
}

From source file:com.google.idea.blaze.java.sync.JavaLanguageLevelHelper.java

private static LanguageLevel getLanguageLevelFromToolchain(BlazeProjectData blazeProjectData,
        LanguageLevel defaultLanguageLevel) {
    BlazeJavaSyncData blazeJavaSyncData = blazeProjectData.syncState.get(BlazeJavaSyncData.class);
    if (blazeJavaSyncData != null) {
        String sourceVersion = blazeJavaSyncData.importResult.sourceVersion;
        if (!Strings.isNullOrEmpty(sourceVersion)) {
            switch (sourceVersion) {
            case "6":
                return LanguageLevel.JDK_1_6;
            case "7":
                return LanguageLevel.JDK_1_7;
            case "8":
                return LanguageLevel.JDK_1_8;
            case "9":
                return LanguageLevel.JDK_1_9;
            }/*from  ww  w.j  a  v a2 s .co  m*/
        }
    }
    return defaultLanguageLevel;
}

From source file:org.obiba.mica.dataset.rest.entity.rql.RQLCriterionOpalConverter.java

private String getQuery(String field) {
    String query = function + "(" + field;
    if (Strings.isNullOrEmpty(value))
        query = query + ")";
    else// w w w. j  a v  a  2  s  .c  om
        query = query + ",(" + value + "))";
    return not ? "not(" + query + ")" : query;
}

From source file:com.marvinformatics.manifestvalidatorplugin.oo.AbsentRule.java

@Override
public Optional<String> validate(String value, JarFile jar) {
    if (Strings.isNullOrEmpty(value))
        return Optional.of("Expected to be absent");
    return Optional.empty();
}