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.apache.aurora.common.inject.Bindings.java

/**
 * Equivalent to calling {@code requireBinding(binder, Key.get(required))}.
 *//*from   w w  w.j  a  v  a 2  s.co m*/
public static void requireBinding(Binder binder, Class<?> required) {
    requireBinding(binder, Key.get(Preconditions.checkNotNull(required)));
}

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

public static PropertySources create(ConfigFactory configFactory, String... nodes) {
    Preconditions.checkNotNull(configFactory);
    Preconditions.checkNotNull(nodes);/*from w  ww.jav a2s.co  m*/
    ConfigNode[] configNodes = new ConfigNode[nodes.length];
    for (int i = 0; i < nodes.length; i++) {
        configNodes[i] = configFactory.getConfigNode(nodes[i]);
    }

    return create(configNodes);
}

From source file:com.facebook.buck.util.MoreMaps.java

public static <K1, K2, V> ImmutableMap<K2, V> transformKeys(Map<K1, V> map,
        Function<? super K1, K2> transformer) {
    ImmutableMap.Builder<K2, V> transformedMap = ImmutableMap.builder();
    for (Map.Entry<K1, V> ent : map.entrySet()) {
        transformedMap.put(Preconditions.checkNotNull(transformer.apply(ent.getKey())), ent.getValue());
    }/*from   w w w .  ja  v a2  s  .c  o m*/
    return transformedMap.build();
}

From source file:cz.cuni.mff.ms.brodecva.botnicek.ide.utils.data.Tables.java

/**
 * Pevede reprezentace tabulky.//w  w w  .  j  ava 2  s. com
 * 
 * @param tableMap
 *            tabulka ve form dvojitho zobrazen
 * @return tabulka
 */
public static <R, C, V> Table<R, C, V> toImmutableTable(
        final Map<? extends R, ? extends Map<? extends C, ? extends V>> tableMap) {
    Preconditions.checkNotNull(tableMap);

    final Builder<R, C, V> builder = ImmutableTable.builder();

    final Set<? extends Entry<? extends R, ? extends Map<? extends C, ? extends V>>> rowEntries = tableMap
            .entrySet();
    for (final Entry<? extends R, ? extends Map<? extends C, ? extends V>> rowEntry : rowEntries) {
        final R rowKey = rowEntry.getKey();

        final Map<? extends C, ? extends V> row = rowEntry.getValue();
        final Set<? extends Entry<? extends C, ? extends V>> cellEntries = row.entrySet();
        for (final Entry<? extends C, ? extends V> cellEntry : cellEntries) {
            final C columnKey = cellEntry.getKey();
            final V value = cellEntry.getValue();

            builder.put(rowKey, columnKey, value);
        }
    }

    return builder.build();
}

From source file:org.apache.james.transport.mailets.remote.delivery.InternetAddressConverter.java

public static InternetAddress[] convert(Collection<MailAddress> recipients) {
    Preconditions.checkNotNull(recipients);
    return recipients.stream().map(MailAddress::toInternetAddress).toArray(InternetAddress[]::new);
}

From source file:ezbake.common.openshift.OpenShiftUtil.java

public static String getRepoDir() {
    return Preconditions.checkNotNull(System.getenv(OPENSHIFT_REPO_DIR));
}

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

public static String getName(final String path) {
    Preconditions.checkNotNull(path);
    return path.replaceAll("/+$", "").replaceAll(".*/", "");
}

From source file:minium.internal.Paths.java

public static List<URL> toURLs(String urlPath) {
    Preconditions.checkNotNull(urlPath);

    ClassLoader loader = firstNonNull(Thread.currentThread().getContextClassLoader(),
            Paths.class.getClassLoader());

    if (urlPath.startsWith(CLASSPATH_PROTOCOL)) {
        String path = urlPath.substring(CLASSPATH_PROTOCOL.length());
        return singletonOrEmpty(loader.getResource(path));
    } else if (urlPath.startsWith(CLASSPATH_WILDCARD_PROTOCOL)) {
        String path = urlPath.substring(CLASSPATH_WILDCARD_PROTOCOL.length());
        try {/*  ww  w.j a  v  a2  s.  com*/
            return Collections.list(loader.getResources(path));
        } catch (IOException e) {
            return singletonOrEmpty(loader.getResource(path));
        }
    } else {
        try {
            return singletonOrEmpty(new URL(urlPath));
        } catch (MalformedURLException e) {
            // let's assume it's a local file
            File file = new File(urlPath);
            Preconditions.checkArgument(file.exists(), "File %s does not exist", file);
            Preconditions.checkArgument(file.isFile(), "%s is not a file", file);

            try {
                return singletonOrEmpty(file.toURI().toURL());
            } catch (MalformedURLException e1) {
                throw Throwables.propagate(e1);
            }
        }
    }
}

From source file:org.opendaylight.tcpmd5.nio.MD5ChannelOptions.java

static MD5ChannelOptions create(final KeyAccessFactory keyAccessFactory, final NetworkChannel ch) {
    final KeyAccess access = keyAccessFactory.getKeyAccess(Preconditions.checkNotNull(ch));
    return new MD5ChannelOptions(ch, access);
}

From source file:org.apache.apex.malhar.lib.utils.serde.ArraySerde.java

/**
 * Serializer and Deserializer need different constructor, so use static factory method to wrap.
 * The ArraySerde returned by newSerializer can only used for serialization
 *//*  ww w.  java 2s  .  c  o m*/
public static <T> ArraySerde<T> newSerializer(Serde<T> itemSerde) {
    return new ArraySerde<T>(Preconditions.checkNotNull(itemSerde));
}