Example usage for com.google.common.base Preconditions checkNotNull

Introduction

In this page you can find the example usage for com.google.common.base Preconditions checkNotNull.

Prototype

public static <T> T checkNotNull(T reference)

Source Link

Document

Ensures that an object reference passed as a parameter to the calling method is not null.

Usage

From source file:org.duniter.elasticsearch.model.Movements.java

public static Stream<Movement> stream(final BlockchainBlock block) {
    Preconditions.checkNotNull(block);

    // No Tx/* w  w w .  j  a v a2 s.c o m*/
    if (CollectionUtils.isEmpty(block.getTransactions())) {
        return Stream.empty();
    }

    return Arrays.stream(block.getTransactions()).flatMap(tx -> Movements.streamFromTx(block, tx));
}

From source file:com.gradleware.tooling.toolingmodel.buildaction.BuildActionFactory.java

/**
 * Creates a new {@code ModelForSingleProjectBuildAction} that fetches the given model for the given project path.
 *
 * @param projectPath the path of the project for which to fetch the model
 * @param modelType the model to fetch//from   w  w w  .  ja  v a 2 s.c o  m
 * @param <T> the model type
 * @return the build action
 */
public static <T> ModelForSingleProjectBuildAction<T> getModelForProject(String projectPath,
        Class<T> modelType) {
    Preconditions.checkNotNull(projectPath);
    Preconditions.checkNotNull(modelType);
    return new ModelForSingleProjectBuildAction<T>(projectPath, modelType);
}

From source file:org.apache.james.mailbox.store.mail.model.impl.Cid.java

public static Cid from(String cidAsString) {
    Preconditions.checkNotNull(cidAsString);
    Preconditions.checkArgument(!cidAsString.isEmpty(), "'cidAsString' is mandatory");
    return new Cid(normalizedCid(cidAsString));
}

From source file:edu.byu.nlp.math.optimize.ConvergenceCheckers.java

public static ConvergenceChecker and(final ConvergenceChecker a, final ConvergenceChecker b) {
    Preconditions.checkNotNull(a);
    Preconditions.checkNotNull(b);/* w ww .j a  v a  2  s.c  o  m*/
    return new ConvergenceChecker() {

        @Override
        public boolean isConverged(int iteration, double prev, double cur) {
            return a.isConverged(iteration, prev, cur) && b.isConverged(iteration, prev, cur);
        }

    };
}

From source file:com.palantir.atlasdb.table.description.IndexComponent.java

/**
 * This takes an existing row component and uses it in the index.
 *//* w  w  w .j  av  a  2s  . co m*/
public static IndexComponent createFromRow(NameComponentDescription rowKeyDesc, String rowComponentName) {
    return new IndexComponent(Preconditions.checkNotNull(rowKeyDesc),
            Preconditions.checkNotNull(rowComponentName), null, null, null, false);
}

From source file:org.metaborg.intellij.utils.CollectionUtils.java

/**
 * Returns an immutable list with the elements in the iterable.
 *
 * @param iterable The iterable.//from ww  w .j av  a 2 s  .  c  om
 * @param <T>      The type of elements.
 * @return An immutable list.
 */
public static <T> List<T> toList(final Iterable<? extends T> iterable) {
    Preconditions.checkNotNull(iterable);

    return Collections.unmodifiableList(toMutableList(iterable));
}

From source file:com.palantir.atlasdb.keyvalue.partition.map.InMemoryPartitionMapService.java

public static InMemoryPartitionMapService create(DynamicPartitionMap partitionMap) {
    return new InMemoryPartitionMapService(Preconditions.checkNotNull(partitionMap));
}

From source file:org.haiku.pkg.model.RawInlineAttribute.java

public RawInlineAttribute(AttributeId attributeId, byte[] rawValue) {
    super(attributeId);
    Preconditions.checkNotNull(rawValue);
    this.rawValue = rawValue;
}

From source file:com.google.cloud.tools.appengine.cloudsdk.internal.FileUtil.java

/**
 * Implementation of recursive directory copy, does NOT overwrite
 *
 * @param source an existing source directory to copy from.
 * @param destination an existing destination directory to copy to.
 *//*  w  ww. j  av a2  s  . c  o  m*/
public static void copyDirectory(final Path source, final Path destination) throws IOException {
    Preconditions.checkNotNull(source);
    Preconditions.checkNotNull(destination);
    Preconditions.checkArgument(Files.isDirectory(source));
    Preconditions.checkArgument(Files.isDirectory(destination));
    Preconditions.checkArgument(!source.equals(destination));
    Preconditions.checkArgument(!destination.startsWith(source), "destination is child of source");

    Files.walkFileTree(source, new SimpleFileVisitor<Path>() {
        final CopyOption[] copyOptions = new CopyOption[] { StandardCopyOption.COPY_ATTRIBUTES };

        @Override
        public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {

            if (dir.equals(source)) {
                return FileVisitResult.CONTINUE;
            }

            Files.copy(dir, destination.resolve(source.relativize(dir)), copyOptions);
            return FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {

            Files.copy(file, destination.resolve(source.relativize(file)), copyOptions);
            return FileVisitResult.CONTINUE;
        }
    });

}

From source file:com.google.copybara.util.console.LogConsole.java

/**
 * Creates a new instance of {@link LogConsole} with write capabilities, only.
 *///from  w  w  w.j a va2 s. c o m
public static LogConsole writeOnlyConsole(PrintStream output) {
    return new LogConsole(/*input*/ null, Preconditions.checkNotNull(output));
}