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.enonic.cms.core.search.facet.model.FacetOrderBy.java

protected static FacetOrderBy createFacetOrderBy(String orderbyString) {
    // Inputs: Value Direction

    if (Strings.isNullOrEmpty(orderbyString)) {
        return null;
    }//from  w  w w  .j a  va2  s  . c o m

    FacetOrderBy facetOrderBy = new FacetOrderBy();

    String[] split = orderbyString.split(" ");

    try {
        facetOrderBy.value = Value.valueOf(split[0].toUpperCase());

        if (split.length == 2) {
            facetOrderBy.direction = Direction.valueOf(split[1].toUpperCase());
        }
    } catch (IllegalArgumentException e) {
        throw new IllegalArgumentException("Not a valid orderby-value: " + orderbyString);
    }

    return facetOrderBy;
}

From source file:com.parallax.server.blocklyprop.utils.ServletUtils.java

public static String getLocale(HttpServletRequest req) {
    String language = req.getParameter("language");
    if (!Strings.isNullOrEmpty(language)) {
        return language;
    }/*from w  ww. j  ava 2 s  .  c  o  m*/
    //        Object localeObject = req.getAttribute("language");
    //        if (localeObject != null) {
    //            System.out.println("Attribute locale not null: " + localeObject);
    //            return String.valueOf(localeObject);
    //        }
    Object localeObject = req.getSession().getAttribute("language");
    if (localeObject != null) {
        return String.valueOf(localeObject);
    }

    language = BlocklyPropSecurityUtils.getLocale();
    if (!Strings.isNullOrEmpty(language)) {
        return language;
    }
    return null;
}

From source file:br.com.blackhubos.eventozero.handlers.AbilityHandler.java

public static Optional<Ability> getAbilityByName(String name) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(name), "name cannot be null or empty");

    return abilitys.parallelStream().filter(a -> a.getName().equals(name)).findAny();
}

From source file:org.geosdi.maplite.client.model.BaseLayerBuilder.java

public static Layer buildBaseMap(String baseMapEnum) {
    BaseLayerEnum baseMapChoise = BaseLayerEnum.MAP_QUEST_OSM;
    if (!Strings.isNullOrEmpty(baseMapEnum)) {
        try {//from   w  ww .ja v a 2  s.c  om
            baseMapChoise = BaseLayerEnum.valueOf(baseMapEnum);
        } catch (IllegalArgumentException iae) {
            logger.warning("The passed value for baseMap is not a valid option: " + baseMapEnum);
        }
    }
    return baseMapChoise.getBaseLayerCreator().createBaseLayer();
}

From source file:org.obiba.magma.datasource.spss.support.CharacterSetValidator.java

@SuppressWarnings("ConstantConditions")
public static void validate(@Nullable String source) throws SpssInvalidCharacterException {
    if (Strings.isNullOrEmpty(source))
        return;/*from w w w  . jav  a  2 s.  co  m*/

    for (int i = 0; i < source.length(); i++) {
        if (!isPrintableChar(source.charAt(i))) {
            throw new SpssInvalidCharacterException("String contains a non-printable character.", source);
        }
    }

}

From source file:com.djd.fun.util.MoreStrings.java

/**
 * returns firstLetter character of the given string.
 * e.g.,//  w w w.  ja va  2s.  c  om
 * <pre><code>
 * input="abcd"; output="a";
 * input="a"; output="a";
 * input=""; output=null;
 * input=null; output=null;
 * </code></pre>
 *
 * @param input string value
 * @return firstLetter character of the given string. {@code null} if input is either null or empty
 */
public static String firstLetter(@Nullable String input) {
    return (Strings.isNullOrEmpty(input)) ? null : input.substring(0, 1);
}

From source file:org.seedstack.netflix.hystrix.internal.command.HystrixCommandFactory.java

public static HystrixExecutable create(CommandParameters commandParameters) {
    String groupKey = (Strings.isNullOrEmpty(commandParameters.getHystrixCommand().groupKey()))
            ? commandParameters.getMethod().getName()
            : commandParameters.getHystrixCommand().groupKey();
    String commandKey = (Strings.isNullOrEmpty(commandParameters.getHystrixCommand().commandKey()))
            ? commandParameters.getMethod().getName()
            : commandParameters.getHystrixCommand().commandKey();

    HystrixCommand.Setter setter = HystrixCommand.Setter
            .withGroupKey(HystrixCommandGroupKey.Factory.asKey(groupKey))
            .andCommandKey(HystrixCommandKey.Factory.asKey(commandKey));
    GenericCommand genericCommand = new GenericCommand(setter);
    genericCommand.setParameters(commandParameters);
    return genericCommand;
}

From source file:br.com.tecsinapse.exporter.util.SpreadsheetUtil.java

private static String getColumnFromCellName(String cellReference) {
    if (Strings.isNullOrEmpty(cellReference)) {
        return "";
    }//from  w w w . ja va2 s . co m

    return cellReference.split("[0-9]*$")[0];
}

From source file:org.retrostore.util.Base64Util.java

public static Optional<byte[]> decode(String base64Str) {
    if (Strings.isNullOrEmpty(base64Str)) {
        return Optional.empty();
    }//from  ww  w .j  a v  a  2s . c o m
    try {
        return Optional.ofNullable(Base64.getDecoder().decode(base64Str));
    } catch (IllegalArgumentException e) {
        return Optional.empty();
    }
}

From source file:org.opendaylight.netconf.console.commands.NetconfCommandUtils.java

public static boolean isPortValid(final String devicePort) {
    if (Strings.isNullOrEmpty(devicePort)) {
        return false;
    }//from  w  w  w. j  a v  a  2 s.com
    Integer port = Integer.parseInt(devicePort);
    if (port != null && port >= 0 && port <= 65535) {
        return true;
    }
    return false;
}