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

List of usage examples for com.google.common.base Optional absent

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Introduction

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

Prototype

public static <T> Optional<T> absent()

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Document

Returns an Optional instance with no contained reference.

Usage

From source file:org.locationtech.geogig.hooks.Hookables.java

/**
 * Returns the filename to be used for a script corresponding to the hook for a given GeoGig
 * operation. Returns {@link Optional.absent} if the specified operation does not allows hooks
 * /*  w w  w  .  jav  a2s . c o  m*/
 * @param class the operation
 * @return the string to be used as filename for storing the script files for the corresponding
 *         hook
 */
public static Optional<String> getFilename(Class<? extends AbstractGeoGigOp<?>> clazz) {
    Hookable annotation = clazz.getAnnotation(Hookable.class);
    if (annotation != null) {
        return Optional.of(annotation.name());
    } else {
        return Optional.absent();
    }
}

From source file:org.opendaylight.controller.config.util.capability.BasicCapability.java

@Override
public Optional<String> getModuleNamespace() {
    return Optional.absent();
}

From source file:org.raml.jaxrs.parser.model.JerseyJaxRsEntity.java

static Optional<JaxRsEntity> create(Type input, SourceParser sourceParser) {

    if (input == null) {
        return Optional.absent();
    } else {/*from w w w  . j  a v a  2s  .co m*/

        return Optional.<JaxRsEntity>of(new JerseyJaxRsEntity(input, sourceParser));
    }
}

From source file:org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes.java

public static Optional<NormalizedNode<?, ?>> findNode(final YangInstanceIdentifier rootPath,
        final NormalizedNode<?, ?> rootNode, final YangInstanceIdentifier childPath) {
    final Optional<YangInstanceIdentifier> relativePath = childPath.relativeTo(rootPath);
    return relativePath.isPresent() ? findNode(rootNode, relativePath.get()) : Optional.absent();
}

From source file:org.mayocat.theme.internal.DefaultUserAgentBreakpointDetector.java

@Override
public Optional<Breakpoint> getBreakpoint(String userAgent) {
    if (userAgent == null) {
        return Optional.absent();
    }/*w w  w  . jav a  2s .c  om*/
    if (userAgent.matches(
            "(?i).*((android|bb\\d+|meego).+mobile|avantgo|bada\\/|blackberry|blazer|compal|elaine|fennec|hiptop"
                    + "|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?"
                    + "|phone|p(ixi|re)\\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\\.(browser|link)"
                    + "|vodafone|wap|windows (ce|phone)|xda|xiino).*")
            || userAgent.substring(0, 4).matches(
                    "(?i)1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\\-)|ai(ko|rn)"
                            + "|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\\-m|r |s )"
                            + "|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\\-(n|u)|c55\\/|capi|ccwa"
                            + "|cdm\\-|cell|chtm|cldc|cmd\\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\\-s|devi|dica|"
                            + "dmob|do(c|p)o|ds(12|\\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)"
                            + "|fetc|fly(\\-|_)|g1 u|g560|gene|gf\\-5|g\\-mo|go(\\.w|od)|gr(ad|un)|haie|hcit"
                            + "|hd\\-(m|p|t)|hei\\-|hi(pt|ta)|hp( i|ip)|hs\\-c|ht(c(\\-| |_|a|g|p|s|t)|tp)"
                            + "|hu(aw|tc)|i\\-(20|go|ma)|i230|iac( |\\-|\\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris"
                            + "|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\\/)|klon|kpt |kwc\\-|kyo(c|k)|le(no|xi)"
                            + "|lg( g|\\/(k|l|u)|50|54|\\-[a-w])|libw|lynx|m1\\-w|m3ga|m50\\/|ma(te|ui|xo)"
                            + "|mc(01|21|ca)|m\\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\\-| |o|v)|zz)"
                            + "|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)"
                            + "|ne((c|m)\\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)"
                            + "|pdxg|pg(13|\\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\\-2|po(ck|rt|se)|prox|psio|pt\\-g"
                            + "|qa\\-a|qc(07|12|21|32|60|\\-[2-7]|i\\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\\/"
                            + "|sa(ge|ma|mm|ms|ny|va)|sc(01|h\\-|oo|p\\-)|sdk\\/|se(c(\\-|0|1)|47|mc|nd|ri)|sgh\\-"
                            + "|shar|sie(\\-|m)|sk\\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\\-|v\\-|v )"
                            + "|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\\-|tdg\\-|tel(i|m)|tim\\-|t\\-mo"
                            + "|to(pl|sh)|ts(70|m\\-|m3|m5)|tx\\-9|up(\\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)"
                            + "|vk(40|5[0-3]|\\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\\-| )"
                            + "|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\\-|your|zeto|zte\\-")) {
        return Optional.of(Breakpoint.MOBILE);
    }

    return Optional.absent();
}

From source file:com.gradleware.tooling.testing.GradleVersionExtractor.java

/**
 * Returns the Gradle version referenced by the given distribution location.
 *
 * @param uri the distribution location//w w w . j  a  va2s  . c om
 * @return the Gradle version of the distribution
 */
public static Optional<String> getVersion(URI uri) {
    Preconditions.checkNotNull(uri);

    Matcher m = PATTERN.matcher(uri.toString());
    if (m.find()) {
        return Optional.of(m.group(1));
    } else {
        return Optional.absent();
    }
}

From source file:de.flapdoodle.javaparser.parboiled.helper.EmptyParameter.java

@Override
protected Optional<AbstractParameter> child() {
    return Optional.absent();
}

From source file:org.terasology.commonworld.geom.BoundingBox.java

/**
 * @param pts a collection of Vector2is/*w  w  w .j  ava  2 s.c  o  m*/
 * @return the bounding rectangle of pts or absent() if pts is empty
 */
public static Optional<Rectangle> getBoundingRect(Collection<Vector2i> pts) {
    if (pts.isEmpty()) {
        return Optional.absent();
    }

    BoundingBox bbox = new BoundingBox(pts);
    return Optional.of(bbox.toRectangle());
}

From source file:org.eclipse.buildship.core.util.binding.Validators.java

public static Validator<File> requiredDirectoryValidator(final String prefix) {
    return new Validator<File>() {

        @Override// w  ww  .j a va 2  s .  c o  m
        public Optional<String> validate(File file) {
            if (file == null) {
                return Optional.of(NLS.bind(CoreMessages.ErrorMessage_0_MustBeSpecified, prefix));
            } else if (!file.exists()) {
                return Optional.of(NLS.bind(CoreMessages.ErrorMessage_0_DoesNotExist, prefix));
            } else if (!file.isDirectory()) {
                return Optional.of(NLS.bind(CoreMessages.ErrorMessage_0_MustBeDirectory, prefix));
            } else {
                return Optional.absent();
            }
        }
    };
}

From source file:de.flapdoodle.logparser.matcher.stacktrace.AbstractStackElement.java

protected static <T> Optional<T> match(CharSequence input, Pattern pattern, IStackElementFactory<T> factory) {
    Optional<Map<String, String>> m = Patterns.match(pattern.matcher(input));
    if (m.isPresent()) {
        return Optional.of(factory.newInstance(input.toString(), m.get()));
    }// w w  w .  ja v  a2 s.com
    return Optional.absent();
}