Example usage for com.google.common.collect Iterables isEmpty

Introduction

In this page you can find the example usage for com.google.common.collect Iterables isEmpty.

Prototype

public static boolean isEmpty(Iterable<?> iterable) 

Source Link

Document

Determines if the given iterable contains no elements.

Usage

From source file:com.google.devtools.build.lib.analysis.configuredtargets.MergedConfiguredTarget.java

/** Creates an instance based on a configured target and a set of aspects. */
public static ConfiguredTarget of(ConfiguredTarget base, Iterable<ConfiguredAspect> aspects)
        throws DuplicateException {
    if (Iterables.isEmpty(aspects)) {
        // If there are no aspects, don't bother with creating a proxy object
        return base;
    }/* w w  w.j a va 2  s  .  com*/

    // Merge output group providers.
    OutputGroupProvider mergedOutputGroupProvider = OutputGroupProvider
            .merge(getAllOutputGroupProviders(base, aspects));

    // Merge extra-actions provider.
    ExtraActionArtifactsProvider mergedExtraActionProviders = ExtraActionArtifactsProvider
            .merge(getAllProviders(base, aspects, ExtraActionArtifactsProvider.class));

    TransitiveInfoProviderMapBuilder aspectProviders = new TransitiveInfoProviderMapBuilder();
    if (mergedOutputGroupProvider != null) {
        aspectProviders.put(mergedOutputGroupProvider);
    }
    if (mergedExtraActionProviders != null) {
        aspectProviders.add(mergedExtraActionProviders);
    }

    for (ConfiguredAspect aspect : aspects) {
        TransitiveInfoProviderMap providers = aspect.getProviders();
        for (int i = 0; i < providers.getProviderCount(); ++i) {
            Object providerKey = providers.getProviderKeyAt(i);
            if (OutputGroupProvider.SKYLARK_CONSTRUCTOR.getKey().equals(providerKey)
                    || ExtraActionArtifactsProvider.class.equals(providerKey)) {
                continue;
            }

            if (providerKey instanceof Class<?>) {
                @SuppressWarnings("unchecked")
                Class<? extends TransitiveInfoProvider> providerClass = (Class<? extends TransitiveInfoProvider>) providerKey;
                if (base.getProvider(providerClass) != null || aspectProviders.contains(providerClass)) {
                    throw new DuplicateException("Provider " + providerKey + " provided twice");
                }
                aspectProviders.put(providerClass, (TransitiveInfoProvider) providers.getProviderInstanceAt(i));
            } else if (providerKey instanceof String) {
                String legacyId = (String) providerKey;
                if (base.get(legacyId) != null || aspectProviders.contains(legacyId)) {
                    throw new DuplicateException("Provider " + legacyId + " provided twice");
                }
                aspectProviders.put(legacyId, providers.getProviderInstanceAt(i));
            } else if (providerKey instanceof Provider.Key) {
                Provider.Key key = (Key) providerKey;
                if (base.get(key) != null || aspectProviders.contains(key)) {
                    throw new DuplicateException("Provider " + key + " provided twice");
                }
                aspectProviders.put((Info) providers.getProviderInstanceAt(i));
            }
        }
    }
    return new MergedConfiguredTarget(base, aspectProviders.build());
}

---

From source file:com.atlassian.jira.license.JiraLicenseManagerImpl.java

@Override
public Iterable<LicenseDetails> getLicenses() {
    Iterable<String> licenseStrings = multiLicenseStore.retrieve();

    if (Iterables.isEmpty(licenseStrings))
        return ImmutableList.of(NullLicenseDetails.NULL_LICENSE_DETAILS);

    return Iterables.transform(licenseStrings, new Function<String, LicenseDetails>() {
        public LicenseDetails apply(@Nullable final String s) {
            return getLicense(s);
        }/*w  w w  .j a  va2 s.  c  o  m*/
    });
}

---

From source file:com.complexible.common.openrdf.model.ExtGraphImpl.java

/**
 * @inheritDoc//from   w ww.ja  v a2s  .  c  o  m
 */
@Override
public boolean contains(final Resource theSubj, final URI thePred, final Value theObj,
        final Resource... theContexts) {
    return !Iterables.isEmpty(Graphs.filter(this, theSubj, thePred, theObj, theContexts));
}

---

From source file:com.google.devtools.build.lib.rules.android.RobolectricResourceSymbolsActionBuilder.java

public NestedSet<Artifact> buildAsClassPathEntry(RuleContext ruleContext) {
    CustomCommandLine.Builder builder = new CustomCommandLine.Builder();
    // Set the busybox tool.
    builder.add("--tool").add("GENERATE_ROBOLECTRIC_R").add("--");

    NestedSetBuilder<Artifact> inputs = NestedSetBuilder.stableOrder();

    builder.addExecPath("--androidJar", sdk.getAndroidJar());
    inputs.add(sdk.getAndroidJar());/* w  w w .  j a v a  2 s  . c o  m*/

    if (!Iterables.isEmpty(dependencies.getResourceContainers())) {
        builder.addAll("--data", VectorArg.join(RESOURCE_CONTAINER_TO_ARG.listSeparator())
                .each(dependencies.getResourceContainers()).mapped(RESOURCE_CONTAINER_TO_ARG));
    }

    inputs.addTransitive(dependencies.getTransitiveResources())
            .addTransitive(dependencies.getTransitiveAssets())
            .addTransitive(dependencies.getTransitiveManifests())
            .addTransitive(dependencies.getTransitiveRTxt())
            .addTransitive(dependencies.getTransitiveSymbolsBin());

    builder.addExecPath("--classJarOutput", classJarOut);
    SpawnAction.Builder spawnActionBuilder = new SpawnAction.Builder();

    ParamFileInfo.Builder paramFile = ParamFileInfo.builder(ParameterFileType.SHELL_QUOTED);
    // Some flags (e.g. --mainData) may specify lists (or lists of lists) separated by special
    // characters (colon, semicolon, hashmark, ampersand) that don't work on Windows, and quoting
    // semantics are very complicated (more so than in Bash), so let's just always use a parameter
    // file.
    // TODO(laszlocsomor), TODO(corysmith): restructure the Android BusyBux's flags by deprecating
    // list-type and list-of-list-type flags that use such problematic separators in favor of
    // multi-value flags (to remove one level of listing) and by changing all list separators to a
    // platform-safe character (= comma).
    paramFile.setUseAlways(OS.getCurrent() == OS.WINDOWS);

    ruleContext.registerAction(spawnActionBuilder.useDefaultShellEnvironment()
            .addTransitiveInputs(inputs.build()).addOutput(classJarOut)
            .addCommandLine(builder.build(), paramFile.build())
            .setExecutable(ruleContext.getExecutablePrerequisite("$android_resources_busybox", Mode.HOST))
            .setProgressMessage("Generating R classes for %s", ruleContext.getLabel())
            .setMnemonic("GenerateRobolectricRClasses").build(ruleContext));

    return NestedSetBuilder.<Artifact>naiveLinkOrder().add(classJarOut).build();
}

---

From source file:org.apache.giraph.graph.VertexResolver.java

@Override
public BasicVertex<I, V, E, M> resolve(I vertexId, BasicVertex<I, V, E, M> vertex,
        VertexChanges<I, V, E, M> vertexChanges, Iterable<M> messages) {
    // Default algorithm:
    // 1. If the vertex exists, first prune the edges
    // 2. If vertex removal desired, remove the vertex.
    // 3. If creation of vertex desired, pick first vertex
    // 4. If vertex doesn't exist, but got messages, create
    // 5. If edge addition, add the edges
    if (vertex != null) {
        if (vertexChanges != null) {
            List<I> removedEdgeList = vertexChanges.getRemovedEdgeList();
            for (I removedDestVertex : removedEdgeList) {
                E removeEdge = ((MutableVertex<I, V, E, M>) vertex).removeEdge(removedDestVertex);
                if (removeEdge == null) {
                    LOG.warn("resolve: Failed to remove edge with " + "destination " + removedDestVertex + "on "
                            + vertex + " since it doesn't exist.");
                }//from  ww w.  j a v a  2s. c  o  m
            }
            if (vertexChanges.getRemovedVertexCount() > 0) {
                vertex = null;
            }
        }
    }

    if (vertex == null) {
        if (vertexChanges != null) {
            if (!vertexChanges.getAddedVertexList().isEmpty()) {
                vertex = vertexChanges.getAddedVertexList().get(0);
            }
        }
        if (vertex == null && messages != null && !Iterables.isEmpty(messages)) {
            vertex = instantiateVertex();
            vertex.initialize(vertexId, BspUtils.<V>createVertexValue(getConf()), null, messages);
        }
    } else {
        if ((vertexChanges != null) && (!vertexChanges.getAddedVertexList().isEmpty())) {
            LOG.warn("resolve: Tried to add a vertex with id = " + vertex.getVertexId() + " when one already "
                    + "exists.  Ignoring the add vertex request.");
        }
    }

    if (vertexChanges != null && !vertexChanges.getAddedEdgeList().isEmpty()) {
        MutableVertex<I, V, E, M> mutableVertex = (MutableVertex<I, V, E, M>) vertex;
        for (Edge<I, E> edge : vertexChanges.getAddedEdgeList()) {
            edge.setConf(getConf());
            mutableVertex.addEdge(edge.getDestVertexId(), edge.getEdgeValue());
        }
    }

    return vertex;
}

---

From source file:org.atlasapi.persistence.content.query.QuerySplitter.java

private Maybe<ContentQuery> split(ContentQuery query, final Set<Class<? extends Identified>> allowedTypes,
        final boolean retain) {

    List<Maybe<AtomicQuery>> extracted = query.accept(new QueryVisitor<Maybe<AtomicQuery>>() {

        @Override// ww w.  j  a v  a2s  .c  om
        public Maybe<AtomicQuery> visit(IntegerAttributeQuery query) {
            return allowed(query);
        }

        @Override
        public Maybe<AtomicQuery> visit(StringAttributeQuery query) {
            return allowed(query);
        }

        @Override
        public Maybe<AtomicQuery> visit(BooleanAttributeQuery query) {
            return allowed(query);
        }

        @Override
        public Maybe<AtomicQuery> visit(EnumAttributeQuery<?> query) {
            return allowed(query);
        }

        @Override
        public Maybe<AtomicQuery> visit(DateTimeAttributeQuery query) {
            return allowed(query);
        }

        @Override
        public Maybe<AtomicQuery> visit(MatchesNothing noOp) {
            return Maybe.nothing();
        }

        private Maybe<AtomicQuery> allowed(AttributeQuery<?> query) {
            if (allowedTypes.contains(query.getAttribute().target())) {
                return retain ? Maybe.<AtomicQuery>just(query) : Maybe.<AtomicQuery>nothing();
            } else {
                return retain ? Maybe.<AtomicQuery>nothing() : Maybe.<AtomicQuery>just(query);
            }
        }
    });

    Iterable<AtomicQuery> operands = Maybe.filterValues(extracted);
    if (Iterables.isEmpty(operands)) {
        return Maybe.nothing();
    } else {
        return Maybe.just(query.copyWithOperands(operands));
    }

}

---

From source file:org.apache.jackrabbit.oak.spi.security.privilege.PrivilegeBitsProvider.java

/**
 * Returns the bits for the given privilege names
 * @param privilegeNames the names//from   www .  ja  va 2 s.  c  o m
 * @return the privilege bits
 */
@Nonnull
public PrivilegeBits getBits(@Nonnull Iterable<String> privilegeNames) {
    if (Iterables.isEmpty(privilegeNames)) {
        return PrivilegeBits.EMPTY;
    }

    Tree privilegesTree = null;
    PrivilegeBits bits = PrivilegeBits.getInstance();
    for (String privilegeName : privilegeNames) {
        PrivilegeBits builtIn = PrivilegeBits.BUILT_IN.get(privilegeName);
        if (builtIn != null) {
            bits.add(builtIn);
        } else {
            if (privilegesTree == null) {
                privilegesTree = getPrivilegesTree();
            }
            if (privilegesTree.exists() && privilegesTree.hasChild(privilegeName)) {
                Tree defTree = privilegesTree.getChild(privilegeName);
                bits.add(PrivilegeBits.getInstance(defTree));
            } else {
                log.debug("Ignoring privilege name " + privilegeName);
            }
        }
    }
    return bits.unmodifiable();
}

---

From source file:org.obiba.opal.core.service.security.DefaultDecryptService.java

private DatasourceEncryptionStrategy getProjectEncryptionStrategy(String projectName) {
    Project project = projectService.getProject(projectName);
    OpalKeyStore keyStore = projectsKeyStoreService.getKeyStore(project);

    DatasourceEncryptionStrategy encryptionStrategy = null;

    if (!Iterables.isEmpty(keyStore.listKeyPairs())) {
        encryptionStrategy = getDefaultEncryptionStrategy();
        encryptionStrategy.setKeyProvider(keyStore);
    }// w  ww . j  a v  a 2s . c om
    return encryptionStrategy;
}

---

From source file:org.janusgraph.graphdb.types.indextype.IndexTypeWrapper.java

@Override
public JanusGraphSchemaType getSchemaTypeConstraint() {
    JanusGraphSchemaType constraint;//w w  w .j a  v  a 2 s .  com
    if (!cachedTypeConstraint) {
        Iterable<SchemaSource.Entry> related = base.getRelated(TypeDefinitionCategory.INDEX_SCHEMA_CONSTRAINT,
                Direction.OUT);
        if (Iterables.isEmpty(related)) {
            constraint = null;
        } else {
            constraint = (JanusGraphSchemaType) Iterables.getOnlyElement(related, null).getSchemaType();
            assert constraint != null;
        }
        schemaTypeConstraint = constraint;
        cachedTypeConstraint = true;
    } else {
        constraint = schemaTypeConstraint;
    }
    return constraint;
}

---

From source file:brooklyn.entity.software.MachineInitTasks.java

protected void openIptablesImpl(Iterable<Integer> inboundPorts, SshMachineLocation machine) {
    if (inboundPorts == null || Iterables.isEmpty(inboundPorts)) {
        log.info("No ports to open in iptables (no inbound ports) for {} at {}", machine, this);
    } else {//w  w  w  .j  a va  2s . c  o m
        log.info("Opening ports in iptables for {} at {}", entity(), machine);

        List<String> iptablesRules = Lists.newArrayList();

        if (isLocationFirewalldEnabled(machine)) {
            for (Integer port : inboundPorts) {
                iptablesRules
                        .add(IptablesCommands.addFirewalldRule(Chain.INPUT, Protocol.TCP, port, Policy.ACCEPT));
            }
        } else {
            iptablesRules = createIptablesRulesForNetworkInterface(inboundPorts);
            iptablesRules.add(IptablesCommands.saveIptablesRules());
        }
        List<String> batch = Lists.newArrayList();
        // Some entities, such as Riak (erlang based) have a huge range of ports, which leads to a script that
        // is too large to run (fails with a broken pipe). Batch the rules into batches of 50
        for (String rule : iptablesRules) {
            batch.add(rule);
            if (batch.size() == 50) {
                machine.execCommands("Inserting iptables rules, 50 command batch", batch);
                batch.clear();
            }
        }
        if (batch.size() > 0) {
            machine.execCommands("Inserting iptables rules", batch);
        }
        machine.execCommands("List iptables rules", ImmutableList.of(IptablesCommands.listIptablesRule()));
    }
}

---

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