Example usage for com.google.common.collect Streams stream

Introduction

In this page you can find the example usage for com.google.common.collect Streams stream.

Prototype

public static DoubleStream stream(OptionalDouble optional) 

Source Link

Document

If a value is present in optional , returns a stream containing only that element, otherwise returns an empty stream.

Usage

From source file:com.google.gerrit.elasticsearch.AbstractElasticIndex.java

private String toDoc(V v) throws IOException {
    XContentBuilder builder = jsonBuilder().startObject();
    for (Values<V> values : schema.buildFields(v, fillArgs)) {
        String name = values.getField().getName();
        if (values.getField().isRepeatable()) {
            builder.field(name,/* ww  w. j a va 2 s.co m*/
                    Streams.stream(values.getValues()).filter(e -> shouldAddElement(e)).collect(toList()));
        } else {
            Object element = Iterables.getOnlyElement(values.getValues(), "");
            if (shouldAddElement(element)) {
                builder.field(name, element);
            }
        }
    }
    return builder.endObject().string();
}

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From source file:com.google.errorprone.bugpatterns.android.WakelockReleasedDangerously.java

/** Return whether the given try-tree will catch the given exception type. */
private boolean tryCatchesException(TryTree tryTree, Type exceptionToCatch, VisitorState state) {
    Types types = state.getTypes();
    return tryTree.getCatches().stream().anyMatch((CatchTree catchClause) -> {
        Type catchesException = getType(catchClause.getParameter().getType());
        // Examine all alternative types of a union type.
        if (catchesException != null && catchesException.isUnion()) {
            return Streams.stream(((UnionClassType) catchesException).getAlternativeTypes())
                    .anyMatch(caught -> types.isSuperType(caught, exceptionToCatch));
        }//  ww w. j  av  a2  s . com
        // Simple type, just check superclass.
        return types.isSuperType(catchesException, exceptionToCatch);
    });
}

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From source file:com.google.errorprone.bugpatterns.AssertionFailureIgnored.java

private static Optional<JCCatch> catchesType(JCTry tryStatement, Type assertionErrorType, VisitorState state) {
    return tryStatement.getCatches().stream().filter(catchTree -> {
        Type type = ASTHelpers.getType(catchTree.getParameter());
        return (type.isUnion() ? Streams.stream(((UnionClassType) type).getAlternativeTypes())
                : Stream.of(type)).anyMatch(caught -> isSubtype(assertionErrorType, caught, state));
    }).findFirst();//  ww w.  j av a  2  s.c o  m
}

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From source file:com.google.devtools.build.lib.query2.RdepsBoundedVisitor.java

@Override
protected Visit getVisitResult(Iterable<DepAndRdepAtDepth> depAndRdepAtDepths) throws InterruptedException {
    Map<SkyKey, Integer> shallowestRdepDepthMap = new HashMap<>();
    depAndRdepAtDepths.forEach(depAndRdepAtDepth -> shallowestRdepDepthMap
            .merge(depAndRdepAtDepth.depAndRdep.rdep, depAndRdepAtDepth.rdepDepth, Integer::min));

    Collection<SkyKey> validRdeps = new ArrayList<>();

    // Multimap of dep to all the reverse deps in this visitation. Used to filter out the
    // disallowed deps.
    Multimap<SkyKey, SkyKey> reverseDepMultimap = ArrayListMultimap.create();
    for (DepAndRdepAtDepth depAndRdepAtDepth : depAndRdepAtDepths) {
        // The "roots" of our visitation (see #preprocessInitialVisit) have a null 'dep' field.
        if (depAndRdepAtDepth.depAndRdep.dep == null) {
            validRdeps.add(depAndRdepAtDepth.depAndRdep.rdep);
        } else {/*  ww  w .  j a v  a  2 s .  c  om*/
            reverseDepMultimap.put(depAndRdepAtDepth.depAndRdep.dep, depAndRdepAtDepth.depAndRdep.rdep);
        }
    }

    Multimap<SkyKey, SkyKey> packageKeyToTargetKeyMap = env
            .makePackageKeyToTargetKeyMap(Iterables.concat(reverseDepMultimap.values()));
    Set<PackageIdentifier> pkgIdsNeededForTargetification = packageKeyToTargetKeyMap.keySet().stream()
            .map(SkyQueryEnvironment.PACKAGE_SKYKEY_TO_PACKAGE_IDENTIFIER).collect(toImmutableSet());
    packageSemaphore.acquireAll(pkgIdsNeededForTargetification);

    try {
        // Filter out disallowed deps. We cannot defer the targetification any further as we do not
        // want to retrieve the rdeps of unwanted nodes (targets).
        if (!reverseDepMultimap.isEmpty()) {
            Collection<Target> filteredTargets = env.filterRawReverseDepsOfTransitiveTraversalKeys(
                    reverseDepMultimap.asMap(), packageKeyToTargetKeyMap);
            filteredTargets.stream().map(SkyQueryEnvironment.TARGET_TO_SKY_KEY).forEachOrdered(validRdeps::add);
        }
    } finally {
        packageSemaphore.releaseAll(pkgIdsNeededForTargetification);
    }

    ImmutableList<SkyKey> uniqueValidRdeps = validRdeps.stream().filter(validRdep -> validRdepMinDepthUniquifier
            .uniqueAtDepthLessThanOrEqualTo(validRdep, shallowestRdepDepthMap.get(validRdep)))
            .collect(ImmutableList.toImmutableList());

    // Don't bother getting the rdeps of the rdeps that are already at the depth bound.
    Iterable<SkyKey> uniqueValidRdepsBelowDepthBound = Iterables.filter(uniqueValidRdeps,
            uniqueValidRdep -> shallowestRdepDepthMap.get(uniqueValidRdep) < depth);

    // Retrieve the reverse deps as SkyKeys and defer the targetification and filtering to next
    // recursive visitation.
    Map<SkyKey, Iterable<SkyKey>> unfilteredRdepsOfRdeps = env.graph
            .getReverseDeps(uniqueValidRdepsBelowDepthBound);

    ImmutableList.Builder<DepAndRdepAtDepth> depAndRdepAtDepthsToVisitBuilder = ImmutableList.builder();
    unfilteredRdepsOfRdeps.entrySet().forEach(entry -> {
        SkyKey rdep = entry.getKey();
        int depthOfRdepOfRdep = shallowestRdepDepthMap.get(rdep) + 1;
        Streams.stream(entry.getValue()).filter(Predicates.and(SkyQueryEnvironment.IS_TTV, universe))
                .forEachOrdered(rdepOfRdep -> {
                    depAndRdepAtDepthsToVisitBuilder
                            .add(new DepAndRdepAtDepth(new DepAndRdep(rdep, rdepOfRdep), depthOfRdepOfRdep));
                });
    });

    return new Visit(/*keysToUseForResult=*/ uniqueValidRdeps,
            /*keysToVisit=*/ depAndRdepAtDepthsToVisitBuilder.build());
}

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From source file:ec.tss.TsCollection.java

public Ts[] retain(Iterable<Ts> all) {
    synchronized (m_moniker) {
        if (all == null) {
            return new Ts[0];
        } else {/*  www  .j a  v  a2s . c o m*/
            if (m_set == null) {
                buildSet();
            }
            return Streams.stream(all).filter(o -> m_set.contains(o.getMoniker())).toArray(Ts[]::new);
        }
    }
}

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From source file:com.yahoo.bard.webservice.data.PreResponseDeserializer.java

/**
 * Generates ResultSet object from the JsonNode which contains the serialized ResultSet.
 *
 * @param serializedResultSet  JsonNode which contains the serialized ResultSet
 *
 * @return ResultSet object generated from JsonNode
 *//*from  ww w  . ja  v  a 2s .com*/
private ResultSet getResultSet(JsonNode serializedResultSet) {
    ResultSetSchema resultSetSchema = getResultSetSchema(serializedResultSet.get(SCHEMA_KEY));
    List<Result> results = Streams.stream(serializedResultSet.get(RESULTS_KEY))
            .map(serializedResult -> getResult(serializedResult, resultSetSchema)).collect(Collectors.toList());

    return new ResultSet(resultSetSchema, results);
}

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From source file:com.google.errorprone.bugpatterns.android.WakelockReleasedDangerously.java

private ClassTree getTopLevelClass(VisitorState state) {
    return (ClassTree) Streams
            .findLast(Streams.stream(state.getPath().iterator()).filter((Tree t) -> t.getKind() == Kind.CLASS))
            .orElseThrow(() -> new IllegalArgumentException("No enclosing class found"));
}

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From source file:org.onosproject.artemis.impl.ArtemisConfig.java

/**
 * Get the information about MOAS. Including remote MOAS server IPs, OVSDB ID and local tunnel IP.
 *
 * @return MOAS information//from w  w w . java2  s .  c  om
 */
MoasInfo moasInfo() {
    MoasInfo moasInfo = new MoasInfo();

    JsonNode moasNode = object.path(MOAS);

    if (!moasNode.isMissingNode()) {
        JsonNode legitIpsNode = moasNode.path(MOAS_LEGIT);
        if (!legitIpsNode.isMissingNode()) {
            if (legitIpsNode.isArray()) {
                moasInfo.setMoasAddresses(Streams.stream(legitIpsNode)
                        .map(ipAddress -> IpAddress.valueOf(ipAddress.asText())).collect(Collectors.toSet()));
            } else {
                log.warn("Legit MOAS field need to be a list");
            }
        } else {
            log.warn("No IPs for legit MOAS specified in configuration");
        }

        JsonNode tunnelPointsNode = moasNode.path(TUNNEL_POINTS);
        if (!tunnelPointsNode.isMissingNode()) {
            if (tunnelPointsNode.isArray()) {
                tunnelPointsNode.forEach(tunnelPoint -> {
                    JsonNode idNode = tunnelPoint.path(TUNNEL_OVSDB_IP),
                            localNode = tunnelPoint.path(TUNNEL_LOCAL_IP),
                            ovsNode = tunnelPoint.path(TUNNEL_OVS_PORT);

                    if (!idNode.isMissingNode() && !localNode.isMissingNode()) {
                        moasInfo.addTunnelPoint(new MoasInfo.TunnelPoint(IpAddress.valueOf(idNode.asText()),
                                IpAddress.valueOf(localNode.asText()), ovsNode.asText()));
                    } else {
                        log.warn("Tunnel point need to have an ID and a Local IP");
                    }
                });
            } else {
                log.warn("Tunnel points field need to be a list");
            }
        }
    } else {
        log.warn("No tunnel points specified in configuration");
    }

    return moasInfo;
}

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From source file:com.google.errorprone.bugpatterns.LambdaFunctionalInterface.java

private static ClassTree getTopLevelClassTree(VisitorState state) {
    return (ClassTree) Streams
            .findLast(Streams.stream(state.getPath().iterator()).filter((Tree t) -> t.getKind() == Kind.CLASS))
            .orElseThrow(() -> new IllegalArgumentException("No enclosing class found"));
}

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From source file:com.yahoo.bard.webservice.data.PreResponseDeserializer.java

/**
 * Generates ZonedSchema object from given JsonNode.
 *
 * @param schemaNode  JsonNode which contains all the columns, timezone and granularity
 *
 * @return ResultSetSchema object generated from the JsonNode
 *//*w w  w.jav  a2 s.  c  o  m*/
private ResultSetSchema getResultSetSchema(JsonNode schemaNode) {
    DateTimeZone timezone = generateTimezone(schemaNode.get(SCHEMA_TIMEZONE).asText(), DateTimeZone
            .forID(SYSTEM_CONFIG.getStringProperty(SYSTEM_CONFIG.getPackageVariableName("timezone"), "UTC")));

    //Recreate ResultSetSchema
    LinkedHashSet<Column> columns = Stream
            .concat(Streams.stream(schemaNode.get(SCHEMA_DIM_COLUMNS)).map(JsonNode::asText)
                    .map(this::resolveDimensionName).map(DimensionColumn::new),
                    Streams.stream(() -> schemaNode.get(SCHEMA_METRIC_COLUMNS_TYPE).fields()).map(
                            entry -> new MetricColumnWithValueType(entry.getKey(), entry.getValue().asText())))
            .collect(Collectors.toCollection(LinkedHashSet::new));

    return new ResultSetSchema(generateGranularity(schemaNode.get(SCHEMA_GRANULARITY).asText(), timezone),
            columns);
}

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