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

static String extractLeadingNumericText(String text, int digits) {
    if (Strings.isNullOrEmpty(text))
        return "";
    String numericText = new LeadingNumericTextExtractor(text).numericText();

    if (digits > 0) {
        double number = Double.valueOf(numericText);
        double roundFactor = Math.pow(10, digits);
        double rounded = ((int) (number * roundFactor)) / roundFactor;

        return rounded + "";
    } else {/*  w  w  w  .  j  a  v a  2s .  c  o m*/
        return numericText;
    }
}

From source file:org.eclipse.recommenders.utils.rcp.UUIDHelper.java

private static Optional<String> lookupUUIDFromStore() {
    final RecommendersUtilsPlugin plugin = RecommendersUtilsPlugin.getDefault();
    final IPreferenceStore prefStore = plugin.getPreferenceStore();
    final String uuid = prefStore.getString(PreferencesInitalizer.PROP_UUID);
    if (Strings.isNullOrEmpty(uuid)) {
        return Optional.absent();
    }//w ww  .  j a  va2s  . c  o m
    return Optional.fromNullable(uuid);
}

From source file:com.google.api.codegen.util.Name.java

/**
 * Creates a Name from a sequence of lower-underscore strings.
 *
 * @throws IllegalArgumentException if any of the strings contain any characters that are not
 *     lower case or underscores.//ww w .ja v a  2 s .c om
 */
public static Name from(String... pieces) {
    List<NamePiece> namePieces = new ArrayList<>();
    for (String piece : pieces) {
        if (Strings.isNullOrEmpty(piece)) {
            continue;
        }
        validateLowerUnderscore(piece);
        namePieces.add(new NamePiece(piece, CaseFormat.LOWER_UNDERSCORE));
    }
    return new Name(namePieces);
}

From source file:org.apache.druid.common.utils.UUIDUtils.java

/**
 * Generates a universally unique identifier.
 *
 * @param extraData Extra data which often takes the form of debugging information
 *
 * @return A string which is a universally unique id (as determined by java.util.UUID) with extra data. It does not conform to a UUID variant standard.
 */// w w  w  . jav  a2s .c  o  m
public static String generateUuid(String... extraData) {
    String extra = null;
    if (extraData != null && extraData.length > 0) {
        final ArrayList<String> extraStrings = new ArrayList<>(extraData.length);
        for (String extraString : extraData) {
            if (!Strings.isNullOrEmpty(extraString)) {
                extraStrings.add(extraString);
            }
        }
        if (!extraStrings.isEmpty()) {
            extra = Joiner.on(UUID_DELIM).join(extraStrings);
        }
    }
    // We don't use "-" in general, so remove them here.
    final String uuid = StringUtils.removeChar(UUID.randomUUID().toString(), '-');
    return extra == null ? uuid : (extra + UUID_DELIM + uuid);
}

From source file:org.obiba.opal.web.gwt.app.client.fs.FileDtos.java

public static FileDto user(String name) {
    return Strings.isNullOrEmpty(name) ? users() : create("home", name);
}

From source file:org.sonar.server.util.Validation.java

public static void checkMandatorySizeParameter(String value, String paramName, Integer size) {
    checkMandatoryParameter(value, paramName);
    if (!Strings.isNullOrEmpty(value) && value.length() > size) {
        throw new BadRequestException(Validation.IS_TOO_LONG_MESSAGE, paramName, size);
    }/*from  w w  w  . j  a  va  2 s  .co  m*/
}

From source file:org.apache.drill.exec.store.SchemaConfig.java

public static Builder newBuilder(final String userName, final QueryContext queryContext) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(userName), "A valid userName is expected");
    Preconditions.checkNotNull(queryContext, "Non-null QueryContext is expected");
    return new Builder(userName, queryContext);
}

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

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

From source file:org.graylog2.grok.GrokPatterns.java

public static GrokPattern fromSummary(GrokPatternSummary grokPatternSummary) {
    final GrokPattern result = new GrokPattern();
    if (!Strings.isNullOrEmpty(grokPatternSummary.id))
        result.id = new ObjectId(grokPatternSummary.id);
    result.name = grokPatternSummary.name;
    result.pattern = grokPatternSummary.pattern;

    return result;
}

From source file:nxminetilities.modules.AdditionalFacades.java

public static void LoadFacades(String facadeIdList) {
    Set<Integer> facadeBlockIds = Sets.newHashSet();
    for (String id : facadeIdList.trim().split("\\s*,\\s*")) {
        try {/*from ww  w.  ja  v a  2 s .c o m*/
            facadeBlockIds.add(Integer.parseInt(id));
        } catch (Exception e) {
            continue;
        }
    }

    // Add nxMinetilities blocks
    if (Minetilities.bColouredStone.blockID != 0) {
        facadeBlockIds.add(Minetilities.bColouredStone.blockID);
    }
    if (Minetilities.bColouredBrick.blockID != 0) {
        facadeBlockIds.add(Minetilities.bColouredBrick.blockID);
    }
    if (Minetilities.bColouredChiselledStone.blockID != 0) {
        facadeBlockIds.add(Minetilities.bColouredChiselledStone.blockID);
    }

    for (int blockId : facadeBlockIds) {
        ItemStack is = new ItemStack(blockId, 1, -1);

        try {
            if (is.getHasSubtypes()) {
                Set<String> names = Sets.newHashSet();
                for (int meta = 0; meta < 15; meta++) {
                    ItemStack metaIs = new ItemStack(blockId, 1, meta);
                    if (!Strings.isNullOrEmpty(metaIs.getItemName()) && names.add(metaIs.getItemName())) {
                        FacadeHelper.addBuildcraftFacade(metaIs);
                        facadeCount++;
                    }
                }
            } else {
                FacadeHelper.addBuildcraftFacade(is);
                facadeCount++;
            }
        } catch (Exception e) {
            Minetilities.nxLog.severe("[AdditionalFacades] ERROR! Exception thrown adding block: " + blockId);
        }
    }

    Minetilities.nxLog.info("[AdditionalFacades] Successfully added " + facadeCount + " facades.");
}