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:io.github.msdk.io.nativeformats.ZipUtils.java

/**
 * Extracts a zip file from stream to a directory specified by destDirectory
 *//*from ww w. j a v  a  2 s  .co m*/
static void extractStreamToFolder(final @Nonnull InputStream stream, final @Nonnull File destDirectory)
        throws IOException {
    Preconditions.checkNotNull(stream);
    Preconditions.checkNotNull(destDirectory);
    ZipInputStream zipStream = new ZipInputStream(stream);
    // iterates over entries in the zip file
    ZipEntry entry;
    while ((entry = zipStream.getNextEntry()) != null) {
        File filePath = new File(destDirectory, entry.getName());
        // Create the folder for this entry, if it does not exist
        filePath.getParentFile().mkdirs();
        if (!entry.isDirectory()) {
            // if the entry is a file, extracts it
            extractFile(zipStream, filePath);
        }
        zipStream.closeEntry();
    }
    zipStream.close();

}

From source file:io.uploader.drive.util.ThreadUtils.java

public static void shutdownExecutor(ExecutorService executor) {
    Preconditions.checkNotNull(executor);
    logger.info("Shutdown executors");
    executor.shutdown();//from  ww w.  java  2  s  .  c o m
    try {
        executor.awaitTermination(2, TimeUnit.SECONDS);
    } catch (InterruptedException e) {
        logger.error("Error occurred while awaiting threads termination", e);
    }
    List<Runnable> notStarted = executor.shutdownNow();
    if (!notStarted.isEmpty()) {
        logger.info("Unstarted tasks stopped (" + notStarted.size() + " tasks in total)");
    }
}

From source file:org.opendaylight.protocol.bgp.parser.spi.MultiPathSupportUtil.java

/**
 * Check is AFI/SAFI is supported by {@link MultiPathSupport} service.
 * @param constraints Peer specific constraint.
 * @param afiSafi Required AFI/SAFI/*from   w w w. ja  v  a2s  . com*/
 * @return True if AFI/SAFI is supported.
 */
public static boolean isTableTypeSupported(@Nullable final PeerSpecificParserConstraint constraints,
        @Nonnull final BgpTableType afiSafi) {
    Preconditions.checkNotNull(afiSafi);
    if (constraints != null) {
        final Optional<MultiPathSupport> peerConstraint = constraints.getPeerConstraint(MultiPathSupport.class);
        return peerConstraint.isPresent() && peerConstraint.get().isTableTypeSupported(afiSafi);
    }
    return false;

}

From source file:net.sf.lucis.core.impl.SingleSearcherProvider.java

public static SingleSearcherProvider of(final Directory directory) {
    Preconditions.checkNotNull(directory);
    return new SingleSearcherProvider() {
        @Override/*from  w w w  .  jav  a  2  s .c  o m*/
        Directory directory() {
            return directory;
        }
    };
}

From source file:com.facebook.buck.rules.BuildRuleParamsFactory.java

/**
 * @return a {@link BuildRuleParams} with no deps or visibility patterns, and a pathRelativizer
 *     that returns the parameter it receives verbatim.
 *///  w ww. ja v  a 2  s .c o  m
public static BuildRuleParams createTrivialBuildRuleParams(BuildTarget buildTarget) {
    return new FakeBuildRuleParams(Preconditions.checkNotNull(buildTarget));
}

From source file:com.dangdang.config.service.easyzk.support.spring.ZookeeperSourceFactory.java

public static PropertySources create(ConfigNode... configNodes) {
    Preconditions.checkNotNull(configNodes);
    final MutablePropertySources sources = new MutablePropertySources();
    for (ConfigNode configNode : configNodes) {
        sources.addLast(new ZookeeperResource(configNode));
    }//from  w  ww. ja v a  2s .co  m
    return sources;
}

From source file:com.palantir.lock.StringLockDescriptor.java

/** Returns a {@code LockDescriptor} instance for the given lock ID. */
public static LockDescriptor of(String lockId) {
    Preconditions.checkNotNull(lockId);
    Preconditions.checkArgument(!Strings.isNullOrEmpty(lockId));
    return new LockDescriptor(lockId.getBytes(Charsets.UTF_8));
}

From source file:com.turn.griffin.utils.GriffinConfig.java

public static String getProperty(String propertyName, String defaultValue) {
    Preconditions.checkNotNull(propertyName);
    if (properties == null) {
        init();/*  w w  w .  j av  a 2  s  . com*/
    }
    return properties.getProperty(propertyName, defaultValue);
}

From source file:org.trancecode.io.Urls.java

public static InputSupplier<InputStream> asInputSupplier(final URL url) {
    Preconditions.checkNotNull(url);

    return url::openStream;
}

From source file:com.jivesoftware.os.server.http.jetty.jersey.server.binding.Injectable.java

public static <T2> Injectable<T2> of(Class<T2> injectableType, T2 instance) {
    Preconditions.checkNotNull(instance);
    return new Injectable<>(injectableType, instance);
}