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:li.klass.fhem.util.ValueExtractUtil.java

public static double extractLeadingDouble(String text, int digits) {
    text = extractLeadingNumericText(text, digits);
    if (Strings.isNullOrEmpty(text))
        return 0;
    return Double.valueOf(text);
}

From source file:org.apache.kylin.metrics.property.QueryRPCPropertyEnum.java

public static QueryRPCPropertyEnum getByName(String name) {
    if (Strings.isNullOrEmpty(name)) {
        return null;
    }//from   w w w. jav  a2 s  .  c  o  m
    for (QueryRPCPropertyEnum property : QueryRPCPropertyEnum.values()) {
        if (property.propertyName.equals(name.toUpperCase())) {
            return property;
        }
    }

    return null;
}

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

public static Optional<Country> tryGetByCode(ObjectContext context, final String code) {
    Preconditions.checkNotNull(context, "the context must be provided");
    Preconditions.checkState(!Strings.isNullOrEmpty(code));
    return getAll(context).stream().filter(a -> a.getCode().equals(code)).collect(SingleCollector.optional());
}

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

public static Optional<UserPasswordResetToken> getByCode(ObjectContext context, String code) {
    Preconditions.checkArgument(null != context, "the context must be supplied");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(code), "the code must be provided");
    return Optional.ofNullable(
            ObjectSelect.query(UserPasswordResetToken.class).where(CODE.eq(code)).selectOne(context));
}

From source file:com.pinterest.rocksplicator.controller.util.ZookeeperConfigParser.java

public static String parseEndpoints(String zkHostsFile, String zkCluster) {
    Yaml yaml = new Yaml();
    try {/*from   w  w  w. ja v  a2  s.  c o m*/
        String cluster = "default";
        if (!Strings.isNullOrEmpty(zkCluster)) {
            cluster = zkCluster;
        }
        String content = Files.toString(new File(zkHostsFile), Charsets.US_ASCII);
        Map<String, Map<String, List<String>>> config = (Map) yaml.load(content);
        List<String> endpoints = config.get("clusters").get(cluster);
        return String.join(",", endpoints);
    } catch (Exception e) {
        LOG.error("Cannot parse Zookeeper endpoints!", e);
        return null;
    }
}

From source file:org.xacml4j.v30.types.DoubleExp.java

public static DoubleExp of(String v) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(v));
    if (v.endsWith("INF")) {
        int infIndex = v.lastIndexOf("INF");
        v = v.substring(0, infIndex) + "Infinity";
    }// w ww. j av a2  s  .co  m
    return new DoubleExp(Double.parseDouble(v));
}

From source file:talkeeg.common.ipc.IpcUtil.java

/**
 * get network address like `a.b.c.d` or `XX:XX:..:XX` from  `tg:[XX:XX:..:XX/net-prefix-len]:port` representation
 * @param address/*  ww  w . java 2  s .  co m*/
 * @return
 */
public static String getNetworkAddress(String address) {
    if (Strings.isNullOrEmpty(address)) {
        return null;
    }
    final TgAddress tgAddress = TgAddress.from(address);
    if (tgAddress == null) {
        return null;
    }
    final int prefixLen = tgAddress.getNetworkPrefixLength();
    if (prefixLen == TgAddress.NO_NETWORK_PREFIX || prefixLen == 0) {
        return null;
    }
    String host = tgAddress.getHost();
    try {
        final InetAddress inetAddress = InetAddress.getByName(host);
        final byte[] value = inetAddress.getAddress();
        final int addressLenInBits = value.length * 8;
        if (addressLenInBits < prefixLen) {
            throw new RuntimeException("network prefix length " + prefixLen + "bits greater than address "
                    + addressLenInBits + "bits");
        }
        //create network address from host address
        final int lastNetByte = prefixLen / 8;
        final int lastNetworkByteBits = prefixLen % 8;
        if (lastNetworkByteBits != 0) {
            value[lastNetByte] = (byte) (value[lastNetByte] & (0xff << (8 - lastNetworkByteBits)));
        } else {
            value[lastNetByte] = 0;
        }
        for (int i = lastNetByte + 1; i < value.length; ++i) {
            value[i] = 0;
        }
        return InetAddress.getByAddress(value).getHostAddress();
    } catch (UnknownHostException e) {
        throw new RuntimeException(" at address: " + address, e);
    }
}

From source file:com.infinities.nova.common.Resource.java

public static void processStack(ContainerRequestContext requestContext, String projectid,
        NovaRequestContext context) {/*  w  ww .  j a va2 s .  co m*/
    logger.debug("projectid: {}, context projectid: {}", new Object[] { projectid, context.getProjectId() });
    if (!Strings.isNullOrEmpty(projectid) && context != null && !projectid.equals(context.getProjectId())) {
        String msg = String.format(
                "Malformed request URL: URL's project_id '%s' doesn't match Context's project_id '%s'",
                projectid, context.getProjectId());

        throw new HTTPBadRequestException(msg);
    }
}

From source file:com.google.apps.easyconnect.easyrp.client.basic.util.IdpUtils.java

/**
 * Checks if a user name is valid./*from  ww w . java  2  s  .c om*/
 * 
 * @param username the user name to be checked
 * @return ture for valid, false otherwise
 */
public static boolean isValidUsername(String username) {
    if (Strings.isNullOrEmpty(username)) {
        return false;
    }
    return username.matches(USERNAME_REGEX);
}

From source file:org.onehippo.cms7.essentials.dashboard.model.TargetPom.java

public static TargetPom pomForName(final String type) {
    if (Strings.isNullOrEmpty(type)) {
        return TargetPom.INVALID;
    }//from   w w w .  jav a  2s .  c om
    if (type.equals(SITE.name)) {
        return SITE;
    } else if (type.equals(CMS.name)) {
        return CMS;
    } else if (type.equals(BOOTSTRAP.name)) {
        return BOOTSTRAP;
    } else if (type.equals(PROJECT.name)) {
        return PROJECT;
    } else if (type.equals(BOOTSTRAP_CONFIG.name)) {
        return BOOTSTRAP_CONFIG;
    } else if (type.equals(BOOTSTRAP_CONTENT.name)) {
        return BOOTSTRAP_CONTENT;
    } else if (type.equals(ESSENTIALS.name)) {
        return ESSENTIALS;
    }
    return TargetPom.INVALID;

}