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

Introduction

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

Prototype

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

Source Link

Document

Returns an Optional instance with no contained reference.

Usage

From source file:org.mayocat.webhooks.Hook.java

public Optional<String> getSecret() {
    if (secret == null) {
        return Optional.absent();
    }
    return secret;
}

From source file:org.apache.giraph.utils.DistributedCacheUtils.java

/**
 * Get local path to file from a DistributedCache.
 *
 * @param conf Configuration/*  www. j a va2 s  .c  om*/
 * @param pathToMatch Path that was used to insert into DistributedCache
 * @return Path matched, or Optional.absent()
 */
public static Optional<Path> getLocalCacheFile(Configuration conf, String pathToMatch) {
    String nameToPath = FilenameUtils.getName(pathToMatch);
    Path[] paths;
    try {
        paths = DistributedCache.getLocalCacheFiles(conf);
    } catch (IOException e) {
        return Optional.absent();
    }
    for (Path path : paths) {
        if (FilenameUtils.getName(path.toString()).equals(nameToPath)) {
            return Optional.of(path);
        }
    }
    return Optional.absent();
}

From source file:org.apache.beam.sdk.extensions.sql.impl.utils.SqlTypeUtils.java

/**
 * Finds an operand with the type in typesToFind. Returns Optional.absent() if no operand found
 * with matching type/*from   www  .ja  v  a2  s .  c om*/
 */
public static Optional<BeamSqlExpression> findExpressionOfType(List<BeamSqlExpression> operands,
        Collection<SqlTypeName> typesToFind) {

    for (BeamSqlExpression operand : operands) {
        if (typesToFind.contains(operand.getOutputType())) {
            return Optional.of(operand);
        }
    }

    return Optional.absent();
}

From source file:org.eclipse.mylyn.internal.wikitext.commonmark.inlines.EmphasisCharactersSpan.java

@Override
public Optional<? extends Inline> createInline(Cursor cursor) {
    Matcher matcher = cursor.matcher(pattern);
    if (matcher.matches()) {
        String group = matcher.group(1);
        return Optional.of(new Characters(cursor.getLineAtOffset(), cursor.getOffset(), group));
    }/*from   w  ww.  j av a2 s .c  om*/
    return Optional.absent();
}

From source file:br.com.objectos.way.ide.IEditorInputWrapperPojo.java

@Override
public Optional<ICompilationUnit> getICompilationUnit() {
    return Optional.absent();
}

From source file:springfox.bean.validators.plugins.Validators.java

public static <T extends Annotation> Optional<T> annotationFromBean(ModelPropertyContext context,
        Class<T> annotationType) {

    Optional<BeanPropertyDefinition> propertyDefinition = context.getBeanPropertyDefinition();
    Optional<T> notNull = Optional.absent();
    if (propertyDefinition.isPresent()) {
        Optional<Method> getter = extractGetterFromPropertyDefinition(propertyDefinition.get());
        Optional<Field> field = extractFieldFromPropertyDefinition(propertyDefinition.get());
        notNull = findAnnotation(getter, annotationType).or(findAnnotation(field, annotationType));
    }/*from w  ww  .  j av  a2 s  .c  om*/

    return notNull;
}

From source file:org.geogit.api.plumbing.CommitFromDateOp.java

@Override
public Optional<RevCommit> call() {
    Preconditions.checkState(date != null);
    long time = date.getTime();
    Iterator<RevCommit> iter = command(LogOp.class).setFirstParentOnly(true).call();
    while (iter.hasNext()) {
        RevCommit commit = iter.next();//from  w ww. ja v  a  2s  .c  o  m
        if (commit.getCommitter().getTimestamp() < time) {
            return Optional.of(commit);
        }
    }
    return Optional.absent();
}

From source file:se.sics.dozy.DozyResult.java

public static DozyResult ok(Object value) {
    return new DozyResult(Status.OK, Optional.absent(), Optional.fromNullable(value));
}

From source file:org.jtwig.functions.parameters.resolve.HttpRequestParameterResolver.java

@Override
public Optional<Value> resolve(JavaMethodParameter parameter) {
    if (parameter.type().isAssignableFrom(HttpServletRequest.class))
        return Optional.of(new Value(LocalThreadHolder.getServletRequest()));
    return Optional.absent();
}

From source file:com.burakdede.BasicAuthenticator.java

@Override
public Optional<T> authenticate(BasicCredentials basicCredentials) throws AuthenticationException {
    Optional<T> accountOptional = Optional.absent();
    final T account = (T) StormpathApi.authenticate(basicCredentials.getUsername(),
            basicCredentials.getPassword());
    accountOptional = Optional.fromNullable(account);

    return accountOptional;
}