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.hadoop.hbase.security.HBaseKerberosUtils.java

static boolean isKerberosPropertySetted() {
    String krbPrincipal = System.getProperty(KRB_PRINCIPAL);
    String krbKeytab = System.getProperty(KRB_KEYTAB_FILE);
    if (Strings.isNullOrEmpty(krbPrincipal) || Strings.isNullOrEmpty(krbKeytab)) {
        return false;
    }//from  w ww. ja v  a 2 s. c o m
    return true;
}

From source file:org.pentaho.di.trans.dataservice.ui.BindingConverters.java

public static BindingConvertor<String, Boolean> stringIsEmpty() {
    return new BindingConvertor<String, Boolean>() {
        @Override/* w w  w . j  a v  a2s  .co m*/
        public Boolean sourceToTarget(String value) {
            return Strings.isNullOrEmpty(value);
        }

        @Override
        public String targetToSource(Boolean value) {
            throw new AbstractMethodError("Boolean to String conversion is not supported");
        }
    };
}

From source file:com.streamsets.lib.security.http.SSOPrincipalUtils.java

public static String getClientIpAddress(HttpServletRequest request) {
    String xff = request.getHeader(CLIENT_IP_HEADER);

    List<String> ipList = xffSplitter.splitToList(Strings.nullToEmpty(xff));

    String ip;/*w w w .j  a va2  s. co  m*/
    if (ipList.size() == 0 || UNKNOWN_IP.equalsIgnoreCase(ipList.get(0))) {
        ip = request.getRemoteAddr();
        if (Strings.isNullOrEmpty(ip)) {
            ip = UNKNOWN_IP;
        }
    } else {
        ip = ipList.get(0);
    }
    return ip;
}

From source file:be.ohatv.searchproviders.Webclient.java

public static String sendGet(String url) throws Exception {
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    // optional default is GET
    con.setRequestMethod("GET");

    //add request header
    con.setRequestProperty("User-Agent", USER_AGENT);

    int responseCode = con.getResponseCode();
    if (responseCode == 200) {
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;// w  w w .j a  va2  s . c  o  m
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();
        //print result
        String result = response.toString();
        if (Strings.isNullOrEmpty(url) == false) {
            return result;
        }
    }
    return null;
}

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

public static String buildJoinClauseFor(Map<String, String> dimensions) {

    StringBuilder sbJoin = new StringBuilder();

    if (dimensions != null) {

        sbJoin = new StringBuilder();

        int i = 0;
        for (String dimension_key : dimensions.keySet()) {
            sbJoin.append(" inner join sub_alarm_definition_dimension d").append(i).append(" on d").append(i)
                    .append(".dimension_name = :dname").append(i);
            if (!Strings.isNullOrEmpty(dimensions.get(dimension_key))) {
                sbJoin.append(" and d").append(i).append(".value = :dvalue").append(i);
            }/*from  w ww.  j av a2 s . c  om*/
            sbJoin.append(" and dim.sub_alarm_definition_id = d").append(i).append(".sub_alarm_definition_id");
            i++;
        }
    }

    return sbJoin.toString();
}

From source file:com.omade.monitor.utils.DateUtils.java

public static String toStringFromDate(Date date, String format) {
    try {/*  w ww . j  a v a 2 s . c o  m*/
        if (Strings.isNullOrEmpty(format)) {
            format = DATE_FORMAT_DEFAULT;
        }
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
        return simpleDateFormat.format(date);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:net.mad.ads.db.definition.AdSlot.java

public static AdSlot fromString(String uuid) throws IllegalArgumentException {
    if (Strings.isNullOrEmpty(uuid)) {
        throw new IllegalArgumentException("Invalid AdUUID string: " + uuid);
    }//  w  w  w .ja  v  a 2  s  . c om
    String[] components = uuid.split("-");
    if (components.length != 2) {
        throw new IllegalArgumentException("Invalid AdUUID string: " + uuid);
    }

    AdSlot aduuid = new AdSlot(Base16.decode(components[0]), Base16.decode(components[1]));

    return aduuid;
}

From source file:io.gravitee.common.utils.PropertiesUtils.java

public static Object getProperty(final Properties properties, final String propertyName,
        final boolean isNumber) {
    final String propertyValue = properties.getProperty(propertyName);
    if (Strings.isNullOrEmpty(propertyValue)) {
        throw new IllegalStateException("Missing property configuration:" + propertyName);
    }/*from   ww w. ja v a2s  .  c  o  m*/
    try {
        if (isNumber) {
            return Integer.parseInt(propertyValue);
        }
        return propertyValue;
    } catch (final NumberFormatException e) {
        throw new IllegalArgumentException("The property must be a valid number:" + propertyName, e);
    }
}

From source file:org.n52.shetland.util.CRSHelper.java

/**
 *
 * Parse the srsName to integer value/*from w  w  w .  j  a v a  2  s  . c  om*/
 *
 * @param srsName
 *                the srsName to parse
 *
 * @return srsName integer value
 *
 */
public static int parseSrsName(String srsName) {
    if (!Strings.isNullOrEmpty(srsName) && !"NOT_SET".equalsIgnoreCase(srsName)) {
        int idx = Math.max(srsName.lastIndexOf(':'), srsName.lastIndexOf('/'));
        if (idx >= 0 && idx < srsName.length() - 1) {
            return Integer.parseInt(srsName.substring(idx + 1), 10);
        }
    }
    return -1;
}

From source file:org.obiba.mica.spi.search.support.AttributeKey.java

public static String getMapKey(String name, @Nullable String namespace) {
    return Strings.isNullOrEmpty(namespace) ? name : namespace + SEPARATOR + name;
}