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.google.gerrit.testutil.NoteDbMode.java

public static NoteDbMode get() {
    String value = System.getenv(ENV_VAR);
    if (Strings.isNullOrEmpty(value)) {
        value = System.getProperty(SYS_PROP);
    }/*from   ww  w  .  ja  v  a  2  s .c om*/
    if (Strings.isNullOrEmpty(value)) {
        return OFF;
    }
    value = value.toUpperCase().replace("-", "_");
    NoteDbMode mode = Enums.getIfPresent(NoteDbMode.class, value).orNull();
    if (!Strings.isNullOrEmpty(System.getenv(ENV_VAR))) {
        checkArgument(mode != null, "Invalid value for env variable %s: %s", ENV_VAR, System.getenv(ENV_VAR));
    } else {
        checkArgument(mode != null, "Invalid value for system property %s: %s", SYS_PROP,
                System.getProperty(SYS_PROP));
    }
    return mode;
}

From source file:org.easyrec.utils.io.Text.java

/**
 * This function returns the given string without the last character.
 * e.g.//from w  ww .  j  a  va 2 s .c  o  m
 * trimLast("peter")-->"pete"
 *
 * @param s
 *
 */
public static String removeLast(String s) {
    if (Strings.isNullOrEmpty(s))
        return s;

    return s.substring(0, s.length() - 1);
}

From source file:com.zaradai.kunzite.optimizer.control.OptimizeRequest.java

public static OptimizeRequest newRequest(Class<? extends OptimizerTactic> tactic, String target,
        boolean lookForMaxima, InputRow start) {
    Preconditions.checkNotNull(tactic, "Invalid tactic specified");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(target), "No target specified");
    Preconditions.checkNotNull(start, "No start position specified");

    return new OptimizeRequest(tactic, target, lookForMaxima, start);
}

From source file:com.github.jcustenborder.kafka.connect.utils.templates.markdown.MarkdownTemplateHelper.java

static void lengths(List<Integer> lengths, List<List<String>> rows) {
    if (lengths.isEmpty()) {
        for (int i = 0; i < rows.get(0).size(); i++) {
            lengths.add(0);/*from w w w.  j a v  a  2s .  c  o m*/
        }
    }
    for (List<String> row : rows) {
        for (int i = 0; i < row.size(); i++) {
            int previous = lengths.get(i);
            int current;
            if (Strings.isNullOrEmpty(row.get(i))) {
                current = 0;
            } else {
                current = row.get(i).length();
            }
            int value = Math.max(current, previous);
            lengths.set(i, value);
        }
    }

}

From source file:monasca.api.infrastructure.persistence.DimensionQueries.java

public static void bindDimensionsToQuery(Query<?> query, Map<String, String> dimensions) {

    if (dimensions != null) {
        int i = 0;
        for (Iterator<Map.Entry<String, String>> it = dimensions.entrySet().iterator(); it.hasNext(); i++) {
            Map.Entry<String, String> entry = it.next();
            query.bind("dname" + i, entry.getKey());
            if (!Strings.isNullOrEmpty(entry.getValue())) {
                List<String> values = Splitter.on('|').splitToList(entry.getValue());
                int j = 0;
                for (String value : values) {
                    query.bind("dvalue" + i + '_' + j, value);
                    j++;/*from w  ww  .  ja v a  2 s. c  om*/
                }
            }
        }
    }
}

From source file:br.com.tecsinapse.exporter.converter.LocalTimeTableCellConverter.java

@Override
public LocalTime apply(String input) {
    return Strings.isNullOrEmpty(input) ? null : LocalTime.parse(input);
}

From source file:org.eclipse.che.ide.ext.openshift.client.util.OpenshiftValidator.java

/**
 * Checks whether name matches OpenShift project naming rules.
 *
 * @param name//  w  w w .ja v  a 2 s  . com
 *         OpenShift project name
 * @return true if project name is valid, false otherwise
 */
public static boolean isProjectNameValid(String name) {
    return !(Strings.isNullOrEmpty(name) || name.length() > 63 || name.length() < 2
            || !name.matches(PROJECT_NAME));
}

From source file:org.apache.atlas.authorize.AtlasAuthorizationUtils.java

public static String parse(String fullPath, String subPath) {
    String api = null;/* w w w  .  java 2s .c o m*/
    if (!Strings.isNullOrEmpty(fullPath)) {
        api = fullPath.substring(subPath.length(), fullPath.length());

    }
    if (isDebugEnabled) {
        LOG.debug("Extracted " + api + " from path : " + fullPath);
    }
    return api;
}

From source file:com.htmlhifive.pitalium.core.selenium.UrlUtils.java

/**
 * BaseURL?path?URL???????{@code path}?http?https????BaseURL??path????????
 * /*from ww  w.j  a v  a2  s . co  m*/
 * @param baseUrl URL
 * @param path 
 * @return URL
 */
static String getTargetUrl(String baseUrl, String path) {
    boolean baseUrlIsEmpty = Strings.isNullOrEmpty(baseUrl);
    boolean pathIsEmpty = Strings.isNullOrEmpty(path);

    if (baseUrlIsEmpty && pathIsEmpty) {
        String message = "Both \"baseUrl\" and \"path\" are empty.";
        LOG.error(message);
        throw new TestRuntimeException(message);
    }

    if (baseUrlIsEmpty) {
        return path;
    }

    if (pathIsEmpty) {
        return baseUrl;
    }

    // path? http:// ??? https:// ????path??????
    if (HTTP_PREFIX_PATTERN.matcher(path).find()) {
        return path;
    }

    return baseUrl + path;
}

From source file:com.conductor.s3.S3HadoopUtils.java

/**
 * Extracts the AWS key and secret from the conf, and returns a new S3 client.
 * //from w  ww .j a v a  2 s. c  om
 * @param conf
 *            job conf
 * @return an S3 client.
 * @throws java.lang.IllegalArgumentException
 *             if it cannot find key/id in the conf.
 */
public static AmazonS3 getS3Client(final Configuration conf) {
    final String accessKey = conf.get("fs.s3n.awsAccessKeyId", conf.get("fs.s3.awsAccessKeyId"));
    checkArgument(!Strings.isNullOrEmpty(accessKey), "Missing fs.s3/n.awsAccessKeyId conf.");
    final String secretKey = conf.get("fs.s3n.awsSecretAccessKey", conf.get("fs.s3.awsSecretAccessKey"));
    checkArgument(!Strings.isNullOrEmpty(secretKey), "Missing fs.s3/n.awsSecretAccessKey conf.");
    return new AmazonS3Client(new BasicAWSCredentials(accessKey, secretKey));
}