Example usage for com.google.common.base Optional orNull

Introduction

In this page you can find the example usage for com.google.common.base Optional orNull.

Prototype

@Nullable
public abstract T orNull();

Source Link

Document

Returns the contained instance if it is present; null otherwise.

Usage

From source file:com.github.jsdossier.jscomp.JsDoc.java

public boolean hasAnnotation(Annotation target) {
    for (Marker marker : info.getMarkers()) {
        Optional<Annotation> annotation = Annotation.forMarker(marker);
        if (target.equals(annotation.orNull())) {
            return true;
        }//from   ww  w. ja  v a  2s . c  o  m
    }
    return false;
}

From source file:org.onos.yangtools.yang.model.util.LengthConstraintImpl.java

LengthConstraintImpl(final Number min, final Number max, final Optional<String> description,
        final Optional<String> reference) {
    super();/*from w ww  .ja  va2  s.  co m*/
    this.min = Preconditions.checkNotNull(min, "min must not be null.");
    this.max = Preconditions.checkNotNull(max, "max must not be null");
    this.description = description.orNull();
    this.reference = reference.orNull();

    this.errorAppTag = "length-out-of-specified-bounds";
    this.errorMessage = "The argument is out of bounds <" + min + ", " + max + ">";
}

From source file:gobblin.writer.AvroHdfsTimePartitionedWriter.java

/**
 *  Check if the partition column value is present and is a Long object. Otherwise, use current system time.
 *//*from  www .  j  a  va 2s .  c o m*/
protected long getRecordTimestamp(Optional<Object> writerPartitionColumnValue) {
    return writerPartitionColumnValue.orNull() instanceof Long ? (Long) writerPartitionColumnValue.get()
            : System.currentTimeMillis();
}

From source file:org.opendaylight.yangtools.yang.model.util.LengthConstraintImpl.java

LengthConstraintImpl(final Number min, final Number max, final Optional<String> description,
        final Optional<String> reference, final String errorAppTag, final String errorMessage) {
    this.min = Preconditions.checkNotNull(min, "min must not be null.");
    this.max = Preconditions.checkNotNull(max, "max must not be null");
    this.description = description.orNull();
    this.reference = reference.orNull();
    this.errorAppTag = errorAppTag != null ? errorAppTag : "length-out-of-specified-bounds";
    this.errorMessage = errorMessage != null ? errorMessage
            : "The argument is out of bounds <" + min + ", " + max + ">";
}

From source file:de.metas.ui.web.vaadin.window.components.CalloutFieldDependenciesBinder.java

private ICalloutField getCalloutField(final Property<?> property) {
    final Field<?> field = getField(property);
    if (field == null) {
        return null;
    }//from  w  w  w  . j  a  v a  2  s.  c o  m

    Optional<ICalloutField> calloutFieldOptional = calloutFields.get(field);
    if (calloutFieldOptional == null) {
        final ICalloutField calloutField = createCalloutField(field);
        calloutFieldOptional = Optional.fromNullable(calloutField);
        calloutFields.put(field, calloutFieldOptional);
    }

    return calloutFieldOptional.orNull();
}

From source file:org.knight.examples.guava.basic.UsingAvoidingNullExamples.java

public void run() {
    Optional<String> o1 = Optional.of("Guava-library");
    if (o1.isPresent()) {
        log("o1: " + o1.get());
    } else {/* ww w .  j a  v a 2  s . com*/
        log("o1: " + o1.toString());
    }

    Optional<String> o2 = Optional.absent();
    try {
        //will cause a IllegalStateException
        log("o2: " + o2.get());
    } catch (IllegalStateException e) {
        log("o2 is absent, use get() will cause a IllegalStateException.");
    }

    Optional<String> o3 = Optional.fromNullable(null);
    log("o3 present = " + o3.isPresent());
    try {
        //will cause a IllegalStateException
        log("o3: " + o3.get());
    } catch (IllegalStateException e) {
        log("o3 is absent, use get() will cause a IllegalStateException.");
    }
    if (o3.orNull() == null) {
        log("o3 is absent, so orNull() returns null.");
    }

    Optional<String> o4 = Optional.fromNullable("Hello World");
    log("o4: " + o4.or("o4 is present, so this default value will not be printed."));

    Optional<Book> o5 = Optional.of(Book.generateBook());
    log("o5: " + o5.get().toString());
}

From source file:org.eclipse.buildship.ui.wizard.project.ProjectImportWizardController.java

private GradleDistributionWrapper createGradleDistribution(Optional<String> gradleDistributionType,
        Optional<String> gradleDistributionConfiguration) {
    DistributionType distributionType = DistributionType
            .valueOf(gradleDistributionType.or(DistributionType.WRAPPER.name()));
    String distributionConfiguration = gradleDistributionConfiguration.orNull();
    return GradleDistributionWrapper.from(distributionType, distributionConfiguration);
}

From source file:org.opendaylight.netvirt.vpnmanager.api.intervpnlink.InterVpnLinkDataComposite.java

public String getOtherEndpoint(String vpnUuid) {
    if (!isFirstEndpointVpnName(vpnUuid) && !isSecondEndpointVpnName(vpnUuid)) {
        LOG.debug("VPN {} does not participate in InterVpnLink {}", vpnUuid, getInterVpnLinkName());
        return null;
    }// ww w  .j  a  v a 2  s  .com

    Optional<String> optEndpointIpAddr = isFirstEndpointVpnName(vpnUuid) ? getSecondEndpointIpAddr()
            : getFirstEndpointIpAddr();
    return optEndpointIpAddr.orNull();
}

From source file:org.opendaylight.netvirt.vpnmanager.api.intervpnlink.InterVpnLinkDataComposite.java

public String getOtherVpnName(String vpnName) {
    if (!isFirstEndpointVpnName(vpnName) && !isSecondEndpointVpnName(vpnName)) {
        LOG.debug("VPN {} does not participate in InterVpnLink {}", vpnName, getInterVpnLinkName());
        return null;
    }/*from  ww  w  .  j  ava 2  s  .c  o m*/

    Optional<String> optOtherVpnName = isFirstEndpointVpnName(vpnName) ? getSecondEndpointVpnUuid()
            : getFirstEndpointVpnUuid();
    return optOtherVpnName.orNull();
}

From source file:org.opendaylight.netvirt.vpnmanager.api.intervpnlink.InterVpnLinkDataComposite.java

public String getOtherEndpointIpAddr(String vpnUuid) {
    if (!isFirstEndpointVpnName(vpnUuid) && !isSecondEndpointVpnName(vpnUuid)) {
        LOG.debug("VPN {} does not participate in InterVpnLink {}", vpnUuid, getInterVpnLinkName());
        return null;
    }/*from  ww  w  . j a  v  a 2s. c  om*/

    Optional<String> optEndpointIpAddr = isFirstEndpointVpnName(vpnUuid) ? getSecondEndpointIpAddr()
            : getFirstEndpointIpAddr();
    return optEndpointIpAddr.orNull();
}