Example usage for java.util Objects requireNonNull

Introduction

In this page you can find the example usage for java.util Objects requireNonNull.

Prototype

public static <T> T requireNonNull(T obj, Supplier<String> messageSupplier)

Source Link

Document

Checks that the specified object reference is not null and throws a customized NullPointerException if it is.

Usage

From source file:fr.landel.utils.commons.builder.HashCodeBuilder2.java

/**
 * Append the {@code hashCode} returned by the {@code getter} function. The
 * {@code getter} method is only applied if the {@code object} is not
 * {@code null}.//from ww w.j  a v  a 2s  .c o m
 * 
 * @param getter
 *            the function to apply if both objects are not {@code null}
 *            (required, throws a {@link NullPointerException} if
 *            {@code null})
 * @param <X>
 *            the sub type
 * @return the current builder
 */
public <X> HashCodeBuilder2<T> append(final Function<T, X> getter) {
    Objects.requireNonNull(getter, "getter");
    if (this.object != null) {
        this.append(getter.apply(this.object));
    }
    return this;
}

From source file:com.netflix.nicobar.core.utils.ClassPathUtils.java

/**
 * Find the root path for the given resource. If the resource is found in a Jar file, then the
 * result will be an absolute path to the jar file. If the resource is found in a directory,
 * then the result will be the parent path of the given resource.
 *
 * For example, if the resourceName is given as "scripts/myscript.groovy", and the path to the file is
 * "/root/sub1/script/myscript.groovy", then this method will return "/root/sub1"
 *
 * @param resourceName relative path of the resource to search for. E.G. "scripts/myscript.groovy"
 * @param classLoader the {@link ClassLoader} to search
 * @return absolute path of the root of the resource.
 *///from   w  w  w .  j  av  a  2 s .  co  m
@Nullable
public static Path findRootPathForResource(String resourceName, ClassLoader classLoader) {
    Objects.requireNonNull(resourceName, "resourceName");
    Objects.requireNonNull(classLoader, "classLoader");

    URL resource = classLoader.getResource(resourceName);
    if (resource != null) {
        String protocol = resource.getProtocol();
        if (protocol.equals("jar")) {
            return getJarPathFromUrl(resource);
        } else if (protocol.equals("file")) {
            return getRootPathFromDirectory(resourceName, resource);
        } else {
            throw new IllegalStateException("Unsupported URL protocol: " + protocol);
        }
    }
    return null;
}

From source file:com.conwet.silbops.msg.PublishMsg.java

public PublishMsg(Notification notification, Context context) {

    super(MessageType.PUBLISH);
    this.notification = Objects.requireNonNull(notification, "Notification is null");
    this.context = Objects.requireNonNull(context, "Context is null");
}

From source file:com.conwet.silbops.msg.ContextMsg.java

public ContextMsg(String id, Context context) {

    super(MessageType.CONTEXT);
    // TODO FIX how contextID is generated
    //      this.id = Objects.requireNonNull(id, "ID is null");
    this.id = id == null ? "" : id;
    this.context = Objects.requireNonNull(context, "Context is null");
}

From source file:net.javacrumbs.completionstage.CallbackRegistry.java

/**
 * Adds the given callbacks to this registry.
 *///from   w ww .java  2s  . c om
public void addCallbacks(Consumer<? super T> successCallback, Consumer<Throwable> failureCallback,
        Executor executor) {
    Objects.requireNonNull(successCallback, "'successCallback' must not be null");
    Objects.requireNonNull(failureCallback, "'failureCallback' must not be null");
    Objects.requireNonNull(executor, "'executor' must not be null");

    synchronized (mutex) {
        state = state.addCallbacks(successCallback, failureCallback, executor);
    }
}

From source file:fr.landel.utils.commons.builder.HashCodeBuilder.java

/**
 * Append the {@code hashCode} returned by the {@code getter} function. The
 * {@code getter} method is only applied if the {@code object} is not
 * {@code null}./*from   w  w  w  .j a va  2 s. co  m*/
 * 
 * @param object
 *            the first object
 * @param getter
 *            the function to apply if both objects are not {@code null}
 *            (required, throws a {@link NullPointerException} if
 *            {@code null})
 * @param <O>
 *            the check object type
 * @param <X>
 *            the sub type
 * @return the current builder
 */
public <O, X> HashCodeBuilder append(final O object, final Function<O, X> getter) {
    Objects.requireNonNull(getter, "getter");
    if (object != null) {
        this.append(getter.apply(object));
    }
    return this;
}

From source file:fr.gael.dhus.util.functional.collect.TransformedMap.java

public TransformedMap(Map<K, Vi> input, Transformer<Duo<K, Vi>, Vo> transformer) {
    Objects.requireNonNull(input, "input map must not be null");
    Objects.requireNonNull(transformer, "transformer must not be null");

    this.input = input;
    this.transformer = transformer;
}

From source file:net.andylizi.laserlib.LaserManagerImpl.java

@Override
public Laser createLaser(Location source, Entity target, boolean elder) throws RuntimeException {
    Objects.requireNonNull(source, "source cannot be null");
    Objects.requireNonNull(target, "target cannot be null");
    Validate.isTrue(source.getWorld().getUID().equals(target.getWorld().getUID()),
            "source and target must in the same world");
    Location guardianPos = source.clone().add(0, -GUARDIAN_EYE_HEIGHT, 0);
    try {//from www  .  j  a  v a  2  s. com
        DummyEntity guardian = NMSUtil.createDummyGuardian(guardianPos, elder, target.getEntityId());
        NMSUtil.dummyGuardians.add(new DummyGuardianRecord(target.getEntityId(), guardian, null));
        return new RealLaser(source, guardian, target);
    } catch (ReflectiveOperationException ex) {
        throw new RuntimeException(ex);
    }
}

From source file:com.navercorp.pinpoint.web.calltree.span.SpanAlign.java

public SpanAlign(SpanBo spanBo, boolean meta) {
    this.spanBo = Objects.requireNonNull(spanBo, "spanBo must not be null");
    this.hasChild = hasChild0();
    this.meta = meta;
}

From source file:com.navercorp.pinpoint.collector.receiver.thrift.tcp.AgentEventHandler.java

@Async("agentEventWorker")
public void handleEvent(PinpointServer pinpointServer, long eventTimestamp, AgentEventType eventType) {
    Objects.requireNonNull(pinpointServer, "pinpointServer must not be null");
    Objects.requireNonNull(eventType, "pinpointServer must not be null");

    final Map<Object, Object> channelProperties = pinpointServer.getChannelProperties();
    if (MapUtils.isEmpty(channelProperties)) {
        // It can occurs CONNECTED -> RUN_WITHOUT_HANDSHAKE -> CLOSED(UNEXPECTED_CLOSE_BY_CLIENT, ERROR_UNKNOWN)
        logger.warn("maybe not yet received the handshake data - pinpointServer:{}", pinpointServer);
        return;/*  w  w w  .  j  a  v a2  s.co  m*/
    }

    final String agentId = MapUtils.getString(channelProperties, HandshakePropertyType.AGENT_ID.getName());
    final long startTimestamp = MapUtils.getLong(channelProperties,
            HandshakePropertyType.START_TIMESTAMP.getName());
    final AgentEventBo agentEventBo = newAgentEventBo(agentId, startTimestamp, eventTimestamp, eventType);
    this.agentEventService.insert(agentEventBo);
}