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:org.apache.isis.core.progmodel.facets.object.defaults.DefaultsProviderUtil.java

public static String defaultsProviderNameFromConfiguration(final Class<?> type,
        final IsisConfiguration configuration) {
    final String key = DEFAULTS_PROVIDER_NAME_KEY_PREFIX + type.getCanonicalName()
            + DEFAULTS_PROVIDER_NAME_KEY_SUFFIX;
    final String defaultsProviderName = configuration.getString(key);
    return !Strings.isNullOrEmpty(defaultsProviderName) ? defaultsProviderName : null;
}

From source file:adept.common.TACKBP2014EAOutput.java

/**
 * @param documentId      May not be {@code null}.
 * @param scoredResponses May not have {@code null} keys or values. If any response has
 *                        a {@link TACKBP2014EventArgument#getDocumentID()} that does not
 *                        match {@code documentId}, an {@link java.lang.IllegalArgumentException}
 *                        will be thrown.
 * @return// www . j a va2s  .  com
 */
public static TACKBP2014EAOutput create(String documentId,
        Map<TACKBP2014EventArgument, Float> scoredResponses) {
    checkArgument(!Strings.isNullOrEmpty(documentId));
    checkArgument(scoredResponses != null);
    for (TACKBP2014EventArgument arg : scoredResponses.keySet()) {
        checkArgument(arg != null);
        checkArgument(scoredResponses.get(arg) != null);
        checkArgument(documentId == arg.getDocumentID());
    }
    return new TACKBP2014EAOutput(documentId, scoredResponses);
}

From source file:com.google.cloud.hadoop.util.ConfigurationUtil.java

/**
 * Gets value for the given keys or throws if one or more values are not found.
 *///from   ww w . j  a  v  a2  s  .com
public static Map<String, String> getMandatoryConfig(Configuration config, List<String> keys)
        throws IOException {
    List<String> missingKeys = new ArrayList<>();
    Map<String, String> values = new HashMap<>();
    for (String key : keys) {
        String value = config.get(key);
        if (Strings.isNullOrEmpty(value)) {
            missingKeys.add(key);
        } else {
            values.put(key, value);
        }
    }
    if (missingKeys.size() > 0) {
        Joiner joiner = Joiner.on(", ");
        String message = "Must supply value for configuration settings: " + joiner.join(missingKeys);
        throw new IOException(message);
    }
    return values;
}

From source file:org.cinchapi.concourse.util.Environments.java

/**
 * Ensure that we return the correct environment with
 * alphanumeric-char name for the specified {@code env}.
 * e.g. if {@code env} is null or empty then return the
 * {@link GlobalState#DEFAULT_ENVIRONMENT}.
 * // w w w .  j  av  a2  s.  co  m
 * @param env
 * @return the environment name
 */
public static String sanitize(String env) {
    env = Strings.isNullOrEmpty(env) ? DEFAULT_ENVIRONMENT : env;
    env = env.replaceAll("[^A-Za-z0-9_]", ""); // ConcourseServer checks to
                                               // make sure sanitizing the
                                               // default environment won't
                                               // turn it into the empty
                                               // string
    return env;
}

From source file:com.mvcoding.financius.core.endpoints.body.TagBody.java

@Override
public void validate() throws RuntimeException {
    checkState(!Strings.isNullOrEmpty(title), "Title cannot be empty.");
}

From source file:com.enonic.cms.core.home.HomeResolver.java

private String resolvePath() {
    String path = this.systemProperties.getProperty("cms.home");
    if (!Strings.isNullOrEmpty(path)) {
        return path;
    }/*from   w ww . ja  v  a2 s.c o  m*/

    path = this.systemProperties.getProperty("CMS_HOME");
    if (!Strings.isNullOrEmpty(path)) {
        return path;
    }

    throw new IllegalArgumentException(
            "Home directory not set. Please set either [cms.home] system property or [CMS_HOME] environment variable.");
}

From source file:org.obiba.mica.taxonomy.TaxonomyResolver.java

public boolean hasVocabularyName() {
    return !Strings.isNullOrEmpty(vocabularyName);
}

From source file:com.github.dbourdette.otto.source.Event.java

public static Event fromJson(String json) throws JsonParseException, IOException {
    Event event = new Event();

    if (Strings.isNullOrEmpty(json)) {
        return event;
    }/*from  www .j a va 2s .c om*/

    JsonFactory jsonFactory = new JsonFactory();
    jsonFactory.setCodec(new ObjectMapper());

    JsonParser jsonParser = jsonFactory.createJsonParser(json);

    JsonNode node = jsonParser.readValueAsTree();

    Iterator<String> names = node.getFieldNames();

    while (names.hasNext()) {
        String name = names.next();

        event.parseValue(name, node.get(name).getValueAsText());
    }

    return event;
}

From source file:org.seedstack.seed.core.internal.command.ArgumentDefinition.java

String getName() {
    return Strings.isNullOrEmpty(argument.name()) ? "arg" + argument.index() : argument.name();
}

From source file:org.opendaylight.yangtools.yang.data.impl.codec.CompiledPatternContext.java

CompiledPatternContext(final PatternConstraint yangConstraint) {
    pattern = Pattern.compile("^" + yangConstraint.getRegularExpression() + "$");
    final String yangMessage = yangConstraint.getErrorMessage();
    if (Strings.isNullOrEmpty(yangMessage)) {
        errorMessage = "Value %s does not match regular expression <" + pattern.pattern() + ">";
    } else {/* w ww . jav  a 2 s .  co  m*/
        errorMessage = yangMessage;
    }
}