Example usage for com.google.common.base Strings emptyToNull

Introduction

In this page you can find the example usage for com.google.common.base Strings emptyToNull.

Prototype

@Nullable
public static String emptyToNull(@Nullable String string)

Source Link

Document

Returns the given string if it is nonempty; null otherwise.

Usage

From source file:com.reprezen.swagedit.assist.StyledCompletionProposal.java

@Override
public Point getSelection(IDocument document) {
    int offset = replacementOffset;

    if (Strings.emptyToNull(prefix) != null) {
        if (replacementString.startsWith(prefix)) {
            offset = replacementOffset - prefix.length();
        } else if (replacementString.contains(prefix)) {
            offset = replacementOffset - prefix.length();
        }/*from  w w  w  . jav  a  2  s  . c  o m*/
    }

    int cursorPosition = offset + replacementString.length();

    return new Point(cursorPosition, 0);
}

From source file:io.druid.query.dimension.LookupDimensionSpec.java

@JsonCreator
public LookupDimensionSpec(@JsonProperty("dimension") String dimension,
        @JsonProperty("outputName") String outputName, @JsonProperty("lookup") LookupExtractor lookup,
        @JsonProperty("retainMissingValue") boolean retainMissingValue,
        @JsonProperty("replaceMissingValueWith") String replaceMissingValueWith,
        @JsonProperty("name") String name, @JacksonInject LookupReferencesManager lookupReferencesManager,
        @JsonProperty("optimize") Boolean optimize) {
    this.retainMissingValue = retainMissingValue;
    this.optimize = optimize == null ? true : optimize;
    this.replaceMissingValueWith = Strings.emptyToNull(replaceMissingValueWith);
    this.dimension = Preconditions.checkNotNull(dimension, "dimension can not be Null");
    this.outputName = Preconditions.checkNotNull(outputName, "outputName can not be Null");
    this.lookupReferencesManager = lookupReferencesManager;
    this.name = name;
    this.lookup = lookup;
    Preconditions.checkArgument(Strings.isNullOrEmpty(name) ^ (lookup == null),
            "name [%s] and lookup [%s] are mutually exclusive please provide either a name or a lookup", name,
            lookup);//from w  w  w. j  a va  2s .c o  m

    if (!Strings.isNullOrEmpty(name)) {
        Preconditions.checkNotNull(this.lookupReferencesManager,
                "The system is not configured to allow for lookups, please read about configuring a lookup manager in the docs");
    }
}

From source file:co.mitro.core.servlets.EditSecretContent.java

static void setEncryptedDataForSVS(MitroRequestContext context,
        Map<Integer, SecretContent> groupIdToEncryptedData, DBServerVisibleSecret svs,
        EmptyClientData allowEmptyClientData) throws MitroServletException, SQLException {
    // find all the group secrets for these groups. TODO: optimize.
    for (DBGroupSecret gs : svs.getGroupSecrets()) {
        int groupId = gs.getGroup().getId();
        SecretContent newContent = groupIdToEncryptedData.get(groupId);
        if (newContent == null) {
            throw new MitroServletException("group:" + groupId + " was omitted for secret:" + svs.getId());
        }/* ww  w . ja  va  2 s  .c o m*/
        if (allowEmptyClientData == EmptyClientData.DISALLOW_EMPTY_CLIENT_DATA) {
            Preconditions.checkNotNull(Strings.emptyToNull(newContent.encryptedClientData));
        }
        if (!Strings.isNullOrEmpty(newContent.encryptedClientData)) {
            gs.setClientVisibleDataEncrypted(newContent.encryptedClientData);
        }
        if (!Strings.isNullOrEmpty(newContent.encryptedCriticalData)) {
            gs.setCriticalDataEncrypted(newContent.encryptedCriticalData);
        }
        context.manager.groupSecretDao.update(gs);
        groupIdToEncryptedData.remove(groupId);
    }
    if (!groupIdToEncryptedData.isEmpty()) {
        throw new MitroServletException("secret: " + svs.getId() + " is not visible to groups:"
                + Joiner.on(",").join(groupIdToEncryptedData.keySet()));
    }
}

From source file:io.druid.query.filter.StringValueMatcherColumnSelectorStrategy.java

@Override
public ValueGetter makeValueGetter(final DimensionSelector selector) {
    if (selector.getValueCardinality() == 0) {
        return NULL_VALUE_GETTER;
    } else {//from  w  w  w.  j a  va  2  s  .  co  m
        return new ValueGetter() {
            @Override
            public String[] get() {
                final IndexedInts row = selector.getRow();
                final int size = row.size();
                if (size == 0) {
                    return NULL_VALUE;
                } else {
                    String[] values = new String[size];
                    for (int i = 0; i < size; ++i) {
                        values[i] = Strings.emptyToNull(selector.lookupName(row.get(i)));
                    }
                    return values;
                }
            }
        };
    }
}

From source file:org.gradle.api.publish.ivy.internal.artifact.AbstractIvyArtifact.java

@Nullable
@Override
public String getConf() {
    return Strings.emptyToNull(conf != null ? conf : getDefaultConf());
}

From source file:com.nestedbird.modules.ratelimiter.RateLimiterAspect.java

/**
 * retrieves the key from the limit annotation data, or uses the name of the method
 *
 * @param joinPoint the join point//  w ww.  j a  va 2s .c om
 * @param limit     the limit annotation data
 * @return the methods identifier
 */
private String getOrCreate(final JoinPoint joinPoint, final RateLimit limit) {
    return Optional.ofNullable(Strings.emptyToNull(limit.key()))
            .orElseGet(() -> JoinPointToStringHelper.toString(joinPoint));
}

From source file:io.macgyver.cli.Command.java

protected Optional<String> getToken() {

    return Optional.ofNullable(Strings.emptyToNull(getConfig().path("token").asText(null)));
}

From source file:com.haulmont.cuba.web.gui.components.WebAbstractTextField.java

@Override
public <V> V getValue() {
    String value = super.getValue();
    if (isTrimming()) {
        value = StringUtils.trim(value);
    }// ww w .j a  v a 2 s  .  com
    value = Strings.emptyToNull(value);

    Datatype datatype = getActualDatatype();
    if (value != null && datatype != null) {
        try {
            return (V) datatype.parse(value, locale);
        } catch (ParseException e) {
            Logger log = LoggerFactory.getLogger(WebAbstractTextField.class);
            log.debug("Unable to parse value of component {}\n{}", getId(), e.getMessage());
            return null;
        }
    } else {
        return (V) value;
    }
}

From source file:com.facebook.buck.intellij.ideabuck.config.BuckSettingsProvider.java

private Optional<String> optionalFromNullableOrEmptyString(String s) {
    return Optional.ofNullable(Strings.emptyToNull(s));
}

From source file:org.glowroot.common2.repo.util.MetricService.java

@Nullable
Number getMetricValue(String agentRollupId, MetricCondition metricCondition, long startTime, long endTime)
        throws Exception {
    String metric = metricCondition.getMetric();
    if (metric.equals("transaction:x-percentile")) {
        return getTransactionDurationPercentile(agentRollupId, metricCondition.getTransactionType(),
                Strings.emptyToNull(metricCondition.getTransactionName()),
                metricCondition.getPercentile().getValue(), startTime, endTime);
    } else if (metric.equals("transaction:average")) {
        return getTransactionAverage(agentRollupId, metricCondition.getTransactionType(),
                Strings.emptyToNull(metricCondition.getTransactionName()), startTime, endTime);
    } else if (metric.equals("transaction:count")) {
        return getTransactionCount(agentRollupId, metricCondition.getTransactionType(),
                Strings.emptyToNull(metricCondition.getTransactionName()), startTime, endTime);
    } else if (metric.equals("error:rate")) {
        return getErrorRate(agentRollupId, metricCondition.getTransactionType(),
                Strings.emptyToNull(metricCondition.getTransactionName()), startTime, endTime);
    } else if (metric.equals("error:count")) {
        return getErrorCount(agentRollupId, metricCondition.getTransactionType(),
                Strings.emptyToNull(metricCondition.getTransactionName()),
                metricCondition.getErrorMessageFilter(), startTime, endTime);
    } else if (metric.startsWith("gauge:")) {
        return getGaugeValue(agentRollupId, metric.substring("gauge:".length()), startTime, endTime);
    } else {/*from   www .  jav a2 s . c o m*/
        throw new IllegalStateException("Unexpected metric: " + metric);
    }
}