Example usage for com.google.common.collect Iterables isEmpty

Introduction

In this page you can find the example usage for com.google.common.collect Iterables isEmpty.

Prototype

public static boolean isEmpty(Iterable<?> iterable)

Source Link

Document

Determines if the given iterable contains no elements.

Usage

From source file:com.google.devtools.build.skyframe.QueryableGraphBackedSkyFunctionEnvironment.java

private static ValueOrUntypedException toUntypedValue(NodeEntry nodeEntry) throws InterruptedException {
    if (nodeEntry == null || !nodeEntry.isDone()) {
        return ValueOrExceptionUtils.ofNull();
    }// w  w w .j a  v a 2 s  . c o m
    SkyValue maybeWrappedValue = nodeEntry.getValueMaybeWithMetadata();
    SkyValue justValue = ValueWithMetadata.justValue(maybeWrappedValue);
    if (justValue != null) {
        return ValueOrExceptionUtils.ofValueUntyped(justValue);
    }
    ErrorInfo errorInfo = Preconditions.checkNotNull(ValueWithMetadata.getMaybeErrorInfo(maybeWrappedValue));
    Exception exception = errorInfo.getException();

    if (exception != null) {
        // Give SkyFunction#compute a chance to handle this exception.
        return ValueOrExceptionUtils.ofExn(exception);
    }
    // In a cycle.
    Preconditions.checkState(!Iterables.isEmpty(errorInfo.getCycleInfo()), "%s %s", errorInfo,
            maybeWrappedValue);
    return ValueOrExceptionUtils.ofNull();
}

From source file:de.cosmocode.commons.validation.FalseRule.java

@Override
public boolean all(Iterable<? extends Object> inputs) {
    Preconditions.checkNotNull(inputs, "Inputs");
    return Iterables.isEmpty(inputs);
}

From source file:com.freiheit.fuava.simplebatch.result.ComposedResult.java

/**
 * If there are no results, fail. If there is one successful result, return
 * success. Add warnings for any values that exceed.
 */// w w w . j  av  a2  s .  c  om
public Result<A, B> compose(final Iterable<? extends Result<?, B>> results) {
    if (results == null || Iterables.isEmpty(results)) {
        return builder.withFailureMessage(
                "No intermediate results found. Intermediate input was " + intermediateValue).failed();
    }
    final Result<?, B> firstSuccess = Iterables.find(results, Result::isSuccess);
    for (final Result<?, B> r : results) {
        // add everything that was accumulated in the composed results
        builder.withFailureMessages(r.getFailureMessages()).withWarningMessages(r.getWarningMessages())
                .withThrowables(r.getThrowables());
    }
    if (firstSuccess == null) {
        return builder.failed();
    }
    return builder.withOutput(firstSuccess.getOutput()).success();
}

From source file:eu.numberfour.n4js.scoping.utils.DynamicPseudoScope.java

@Override
public Iterable<IEObjectDescription> getElements(QualifiedName name) {
    Iterable<IEObjectDescription> parentResult = parent.getElements(name);
    if (Iterables.isEmpty(parentResult)) {
        return Collections.<IEObjectDescription>singletonList(new UnresolvableObjectDescription(name));
    }//from   w  ww .ja v a  2s .c om
    return parentResult;
}

From source file:org.sosy_lab.cpachecker.cfa.ast.FileLocation.java

public static FileLocation merge(List<FileLocation> locations) {
    checkArgument(!Iterables.isEmpty(locations));

    String fileName = null;/* w  w  w  .j  a  v  a2 s .c om*/
    String niceFileName = null;
    int startingLine = Integer.MAX_VALUE;
    int startingLineInOrigin = Integer.MAX_VALUE;
    int endingLine = Integer.MIN_VALUE;
    for (FileLocation loc : locations) {
        if (loc == DUMMY) {
            continue;
        }
        if (fileName == null) {
            fileName = loc.fileName;
            niceFileName = loc.niceFileName;
        } else if (!fileName.equals(loc.fileName)) {
            return MULTIPLE_FILES;
        }

        startingLine = Math.min(startingLine, loc.getStartingLineNumber());
        startingLineInOrigin = Math.min(startingLineInOrigin, loc.getStartingLineInOrigin());
        endingLine = Math.max(endingLine, loc.getEndingLineNumber());
    }

    if (fileName == null) {
        // only DUMMY elements
        return DUMMY;
    }
    return new FileLocation(endingLine, fileName, niceFileName, 0, 0, startingLine, startingLineInOrigin);
}

From source file:com.vino.business.CellarBusiness.java

public WineCellar removeCellar(String cellarKey) {
    Iterable<WineCellarRecord> allRecords = repository.getAllRecords(Reference.<WineCellar>of(cellarKey));
    if (!Iterables.isEmpty(allRecords)) {
        throw new IllegalStateException("CELLAR_NOT_EMPTY");
    }/*from  w w  w .j a  va  2  s .  c  om*/
    persistor.delete(cellarKey);
    return (WineCellar) new WineCellar().setKey(cellarKey);
}

From source file:com.spectralogic.ds3cli.views.cli.GetVersionedBucketView.java

@Override
public String render(final GetBucketResult br) {
    // Bucket details
    final String bucketDesc = new GetBucketDetailsView().render(br);

    if (null == br.getResult() || Iterables.isEmpty(br.getResult())) {
        return "No objects were reported in bucket.";
    }/*from   w  w w . j  a v a2  s . co m*/
    this.contents = br.getResult();
    initTable(ImmutableList.of("File Name", "Size", "Owner", "Last Modified", "ETag", "Version Id"));
    setTableDataAlignment(ImmutableList.of(ASCIITable.ALIGN_LEFT, ASCIITable.ALIGN_RIGHT,
            ASCIITable.ALIGN_RIGHT, ASCIITable.ALIGN_LEFT, ASCIITable.ALIGN_RIGHT, ASCIITable.ALIGN_LEFT));

    final String bucketContents = ASCIITable.getInstance().getTable(getHeaders(), formatTableContents());

    return String.format("%s\n%s", bucketDesc, bucketContents);
}

From source file:com.google.api.server.spi.config.model.ApiCacheControlConfig.java

@Override
public boolean equals(Object o) {
    if (this == o) {
        return true;
    } else if (o instanceof ApiCacheControlConfig) {
        ApiCacheControlConfig config = (ApiCacheControlConfig) o;
        return Iterables.isEmpty(getConfigurationInconsistencies(config));
    } else {/*from   w  ww. j  ava  2 s. c  o m*/
        return false;
    }
}

From source file:minium.web.internal.actions.RetryAfterWaitingWhileEmptyInteractionListener.java

@Override
protected void onAfterFailEvent(AfterFailInteractionEvent event) {
    if (!(event.getException() instanceof TimeoutException))
        return;/*ww w  . j a v  a2 s .  co  m*/

    if (Iterables.isEmpty(waitElements.as(InternalWebElements.class).wrappedNativeElements())) {
        try {
            WaitForExistenceInteraction interaction = new WaitForExistenceInteraction(waitElements, null);
            interaction.registerListener(new WaitingPresetInteractionListener(waitingPreset));
            interaction.perform();
            event.setRetry(true);
        } catch (Exception e) {
            // we tried...
        }
    }
}

From source file:org.pantsbuild.tools.junit.impl.SpecParser.java

/**
 * Parses the list of incoming test specs from the command line.
 * <p>/*  w w  w .  j  av a  2  s . c  om*/
 * Expects a list of string specs which can be represented as one of:
 * <ul>
 *   <li>package.className</li>
 *   <li>package.className#methodName</li>
 * </ul>
 * Note that each class or method will only be executed once, no matter how many times it is
 * present in the list.
 * </p>
 * <p>
 * It is illegal to pass a spec with just the className if there are also individual methods
 * present in the list within the same class.
 * </p>
 */
// TODO(zundel): This could easily be extended to allow a regular expression in the spec
SpecParser(Iterable<String> testSpecStrings) {
    Preconditions.checkArgument(!Iterables.isEmpty(testSpecStrings));
    this.testSpecStrings = testSpecStrings;
}