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

Introduction

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

Prototype

@Beta
public abstract T or(Supplier<? extends T> supplier);

Source Link

Document

Returns the contained instance if it is present; supplier.get() otherwise.

Usage

From source file:io.crate.operation.merge.IteratorPageDownstream.java

public IteratorPageDownstream(final RowReceiver rowReceiver, final PagingIterator<Void, Row> pagingIterator,
        Optional<Executor> executor) {
    this.pagingIterator = pagingIterator;
    lastIterator = pagingIterator;/*from  ww  w. jav a 2s  .  co m*/
    this.executor = executor.or(MoreExecutors.directExecutor());
    this.rowReceiver = rowReceiver;
}

From source file:com.facebook.buck.shell.ExportFileRule.java

@VisibleForTesting
ExportFileRule(CachingBuildRuleParams params, Optional<String> src, Optional<String> out) {
    super(params);

    String shortName = params.getBuildTarget().getShortName();

    this.src = src.or(shortName);

    final String outName = out.or(shortName);

    this.out = Suppliers.memoize(new Supplier<File>() {
        @Override// ww w.j  a v  a 2  s  . c  om
        public File get() {
            String name = new File(outName).getName();
            String outputPath = String.format("%s/%s%s", BuckConstant.GEN_DIR,
                    getBuildTarget().getBasePathWithSlash(), name);

            return new File(outputPath);
        }
    });
}

From source file:com.pinterest.teletraan.resource.EnvCapacities.java

@GET
public List<String> get(@PathParam("envName") String envName, @PathParam("stageName") String stageName,
        @QueryParam("capacityType") Optional<CapacityType> capacityType) throws Exception {
    EnvironBean envBean = Utils.getEnvStage(environDAO, envName, stageName);
    if (capacityType.or(CapacityType.GROUP) == CapacityType.GROUP) {
        return groupDAO.getCapacityGroups(envBean.getEnv_id());
    } else {// ww w.  j  av a 2 s.  co m
        return groupDAO.getCapacityHosts(envBean.getEnv_id());
    }
}

From source file:org.apache.usergrid.corepersistence.pipeline.read.search.AbstractElasticSearchFilter.java

@Override
public Observable<FilterResult<Candidate>> call(final Observable<FilterResult<Id>> observable) {

    //get the graph manager
    final EntityIndex applicationEntityIndex = entityIndexFactory.createEntityIndex(
            indexLocationStrategyFactory.getIndexLocationStrategy(pipelineContext.getApplicationScope()));

    final int limit = pipelineContext.getLimit();

    final SearchTypes searchTypes = getSearchTypes();

    //return all ids that are emitted from this edge
    return observable.flatMap(idFilterResult -> {

        final SearchEdge searchEdge = getSearchEdge(idFilterResult.getValue());

        final Observable<FilterResult<Candidate>> candidates = Observable.create(subscriber -> {

            //our offset to our start value.  This will be set the first time we emit
            //after we receive new ids, we want to reset this to 0
            //set our our constant state
            final Optional<Integer> startFromCursor = getSeekValue();

            final int startOffset = startFromCursor.or(0);

            int currentOffSet = startOffset;

            subscriber.onStart();/*from   ww w  . jav  a2  s .  c o m*/

            //emit while we have values from ES and someone is subscribed
            while (!subscriber.isUnsubscribed()) {

                try {
                    final CandidateResults candidateResults = applicationEntityIndex.search(searchEdge,
                            searchTypes, query, limit, currentOffSet);

                    Collection<SelectFieldMapping> fieldMappingCollection = candidateResults
                            .getGetFieldMappings();

                    for (CandidateResult candidateResult : candidateResults) {

                        //our subscriber unsubscribed, break out
                        if (subscriber.isUnsubscribed()) {
                            return;
                        }

                        final Candidate candidate = new Candidate(candidateResult, searchEdge,
                                fieldMappingCollection);

                        final FilterResult<Candidate> result = createFilterResult(candidate, currentOffSet,
                                idFilterResult.getPath());

                        subscriber.onNext(result);

                        currentOffSet++;
                    }

                    /**
                     * No candidates, we're done
                     */
                    if (candidateResults.size() < limit) {
                        subscriber.onCompleted();
                        return;
                    }

                } catch (Throwable t) {

                    logger.error("Unable to search candidates", t);
                    subscriber.onError(t);
                }
            }
        });

        //add a timer around our observable
        ObservableTimer.time(candidates, searchTimer);

        return candidates;
    });
}

From source file:com.facebook.buck.java.ExternalJavac.java

public ExternalJavac(final Path pathToJavac) {
    this.pathToJavac = pathToJavac;

    this.version = Suppliers.memoize(new Supplier<JavacVersion>() {
        @Override/*  ww w . j a  v  a2 s  . com*/
        public JavacVersion get() {
            ProcessExecutorParams params = ProcessExecutorParams.builder()
                    .setCommand(ImmutableList.of(pathToJavac.toString(), "-version")).build();
            ProcessExecutor.Result result;
            try (PrintStream stdout = new PrintStream(new ByteArrayOutputStream());
                    PrintStream stderr = new PrintStream(new ByteArrayOutputStream())) {
                result = createProcessExecutor(stdout, stderr).launchAndExecute(params);
            } catch (InterruptedException | IOException e) {
                throw new RuntimeException(e);
            }
            Optional<String> stderr = result.getStderr();
            String output = stderr.or("").trim();
            if (Strings.isNullOrEmpty(output)) {
                return DEFAULT_VERSION;
            } else {
                return JavacVersion.of(output);
            }
        }
    });
}

From source file:com.pinterest.teletraan.resource.EnvHistory.java

@GET
public List<ConfigHistoryBean> get(@PathParam("envName") String envName,
        @PathParam("stageName") String stageName, @QueryParam("pageIndex") Optional<Integer> pageIndex,
        @QueryParam("pageSize") Optional<Integer> pageSize) throws Exception {
    EnvironBean envBean = Utils.getEnvStage(environDAO, envName, stageName);
    return configHistoryDAO.getByConfigId(envBean.getEnv_id(), pageIndex.or(1), pageSize.or(DEFAULT_SIZE));
}

From source file:com.google.template.soy.jbcsrc.api.PrecompiledSoyModule.java

@Provides
@Singleton/*from w  w w.j a  v  a2s .  c om*/
@Precompiled
SoySauce provideSoySauce(SoySauceImpl.Factory factory,
        @Deltemplates Optional<ImmutableSet<String>> allDeltemplates,
        ImmutableMap<String, ? extends SoyFunction> functions,
        ImmutableMap<String, ? extends SoyPrintDirective> printDirectives) {
    return factory.create(new CompiledTemplates(allDeltemplates.or(ImmutableSet.<String>of())), functions,
            printDirectives);
}

From source file:com.addthis.hydra.job.spawn.resources.TaskResource.java

@GET
@Path("/stop")
@Produces(MediaType.APPLICATION_JSON)/*w w  w.  ja  v a2 s  .  c  o  m*/
public Response stopTask(@QueryParam("job") Optional<String> jobId,
        @QueryParam("task") Optional<Integer> task) {
    //      emitLogLineForAction(kv, "stop task " + job + "/" + task);
    try {
        spawn.stopTask(jobId.or(""), task.or(-1));
        return Response.ok().build();
    } catch (Exception ex) {
        return Response.serverError().entity(ex.getMessage()).build();
    }
}

From source file:com.addthis.hydra.job.spawn.resources.TaskResource.java

@GET
@Path("/kill")
@Produces(MediaType.APPLICATION_JSON)/*from www.  j a  v a 2  s  .  com*/
public Response killTask(@QueryParam("job") Optional<String> jobId,
        @QueryParam("task") Optional<Integer> task) {
    //      emitLogLineForAction(kv, "kill task " + job + "/" + task);
    try {
        spawn.killTask(jobId.or(""), task.or(-1));
        return Response.ok().build();
    } catch (Exception ex) {
        return Response.serverError().entity(ex.getMessage()).build();
    }
}

From source file:org.jclouds.rest.config.ReadAnnotationsAndProperties.java

@Override
public Optional<Long> getTimeoutNanos(Invocation in) {
    String commandName = getCommandName(in);
    Optional<Long> defaultMillis = fromNullable(timeouts.get("default"));
    Optional<Long> timeoutMillis = fromNullable(timeouts.get(commandName));
    Invokable<?, ?> invoked = in.getInvokable();
    if (invoked.isAnnotationPresent(Named.class)) {
        timeoutMillis = timeoutMillis.or(defaultMillis);
    } else {/*from   w  ww  . j a va2  s  .  c  om*/
        // TODO: remove old logic once Named annotations are on all methods
        String className = invoked.getOwnerType().getRawType().getSimpleName().replace("AsyncClient", "Client")
                .replace("AsyncApi", "Api");
        timeoutMillis = timeoutMillis.or(fromNullable(timeouts.get(className))).or(defaultMillis);
    }
    if (timeoutMillis.isPresent())
        return Optional.of(MILLISECONDS.toNanos(timeoutMillis.get()));
    return Optional.absent();
}