Example usage for java.util Collection stream

Introduction

In this page you can find the example usage for java.util Collection stream.

Prototype

default Stream<E> stream() 

Source Link

Document

Returns a sequential Stream with this collection as its source.

Usage

From source file:ijfx.core.imagedb.DefaultExplorerService.java

@Override
public synchronized Collection<? extends ImageRecord> getRecordsFromDirectory(ProgressHandler handler,
        File directory) {// ww  w . jav  a2  s.c  o  m

    List<ImageRecord> records = new ArrayList<>();

    statusService.showStatus(1, 10, "Analyzing folder : " + directory.getName());
    Collection<File> files = getAllImagesFromDirectory(directory);
    int count = 0;
    int total = files.size();

    handler.setTotal(total);

    List<ImageRecord> collect = files.stream().map(f -> {
        handler.increment(1.0);
        try {
            return getRecord(f);
        } catch (Exception e) {
            return null;
        }
    }).filter(record -> record != null).collect(Collectors.toList());

    return collect;

}

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From source file:it.unibo.alchemist.boundary.monitors.SAPERENearestNodeSampler.java

@Override
protected double[] getProperties(final Environment<List<? extends ILsaMolecule>> env, final Position pos,
        final Reaction<List<? extends ILsaMolecule>> r, final Time time, final long step) {
    if (mobility || !HashUtils.pointerEquals(env, envCache)) {
        pnCache.clear();/*www.  jav a  2  s.com*/
        envCache = env;
    }
    if (!HashUtils.pointerEquals(propertyCache, property)) {
        propertyCache = property;
        properties.clear();
        final StringTokenizer tk = new StringTokenizer(propertyCache, propertySeparators);
        while (tk.hasMoreElements()) {
            properties.add(tk.nextToken());
        }
    }
    if (!HashUtils.pointerEquals(lsaCache, lsa)) {
        lsaCache = lsa;
        mol = sapere.createMolecule(lsaCache);
    }
    if (env.getNodesNumber() > 0 && mol != null) {
        final double[] res = new double[properties.size()];
        int i = 0;
        Node<List<? extends ILsaMolecule>> node = pnCache.get(pos);
        if (node == null) {
            double range = Arrays.stream(env.getSize()).reduce(1,
                    (x, y) -> FastMath.max(x, y) / FastMath.sqrt(env.getNodesNumber()));
            Collection<Node<List<? extends ILsaMolecule>>> neighs = env.getNodesWithinRange(pos, range);
            while (neighs.isEmpty()) {
                range *= 2;
                neighs = env.getNodesWithinRange(pos, range);
            }
            node = neighs.stream().reduce(
                    (n1, n2) -> env.getPosition(n1).getDistanceTo(pos) < env.getPosition(n2).getDistanceTo(pos)
                            ? n1
                            : n2)
                    .get();
            pnCache.put(pos, node);
        }
        for (final String prop : properties) {
            /*
             * Take the nearest node
             */
            res[i++] = sapere.getProperty(node, mol, prop);
        }
        return res;
    }
    return new double[0];
}

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From source file:com.hortonworks.streamline.streams.security.service.SecurityCatalogService.java

private Collection<User> fillRoles(Collection<User> users) {
    return users.stream().map(this::fillRoles).collect(Collectors.toList());
}

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From source file:com.netflix.genie.web.security.oauth2.pingfederate.PingFederateUserAuthenticationConverter.java

/**
 * {@inheritDoc}/*from   ww w  .ja va2s  .  co  m*/
 */
//TODO: might be too much unnecessary validation in here
@Override
public Authentication extractAuthentication(final Map<String, ?> map) {
    // Make sure we have a client id to use as the Principle
    if (!map.containsKey(CLIENT_ID_KEY)) {
        throw new InvalidTokenException("No client id key found in map");
    }

    final Object clientIdObject = map.get(CLIENT_ID_KEY);
    if (!(clientIdObject instanceof String)) {
        throw new InvalidTokenException("Client id wasn't string");
    }

    final String userName = (String) clientIdObject;
    if (StringUtils.isBlank(userName)) {
        throw new InvalidTokenException("Client id was blank. Unable to use as user name");
    }

    // Scopes were already validated in PingFederateRemoteTokenServices
    final Object scopeObject = map.get(SCOPE_KEY);
    if (!(scopeObject instanceof Collection)) {
        throw new InvalidTokenException("Scopes were not a collection");
    }

    @SuppressWarnings("unchecked")
    final Collection<String> scopes = (Collection<String>) scopeObject;
    if (scopes.isEmpty()) {
        throw new InvalidTokenException("No scopes available. Unable to authenticate");
    }

    // Default to user role
    final Set<GrantedAuthority> authorities = Sets.newHashSet(USER_AUTHORITY);

    scopes.stream().filter(scope -> scope.contains(GENIE_PREFIX)).distinct()
            .forEach(scope -> authorities.add(new SimpleGrantedAuthority(
                    ROLE_PREFIX + StringUtils.removeStartIgnoreCase(scope, GENIE_PREFIX).toUpperCase())));

    return new UsernamePasswordAuthenticationToken(userName, "N/A", authorities);
}

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From source file:org.trustedanalytics.servicecatalog.unit.ServiceInstancesControllerTest.java

@Test
public void getAllServiceInstances_withoutServiceFilter_returnAllServiceInstancesFromCloudfoundry() {
    UUID service = null;/*from   w w  w  .java2  s  .  c o  m*/
    ServiceInstanceMetadata metadata = new ServiceInstanceMetadata(UUID.randomUUID(), "test-user");
    when(serviceInstanceRegistry.getInstanceCreator(any(UUID.class))).thenReturn(metadata);

    Collection<ServiceInstance> allNotFilteredServiceInstances = ServiceInstancesTestsResources
            .allNotFilteredServiceInstances();

    Collection<ServiceInstance> serviceInstances = sut.getAllServiceInstances(SPACE_GUID, null);

    List<UUID> expectedGuids = allNotFilteredServiceInstances.stream().map(i -> i.getGuid())
            .collect(Collectors.toList());
    List<UUID> resultGuids = serviceInstances.stream().map(i -> i.getGuid()).collect(Collectors.toList());
    assertEquals(expectedGuids, resultGuids);
    verify(ccClient).getSpaceSummary(SPACE_GUID);
}

---

From source file:com.openshift.internal.restclient.model.v1.ReplicationControllerTest.java

public void testGetEnvironmentVariablesWithValueFrom() {

    Collection<IEnvironmentVariable> envVars = rc.getEnvironmentVariables();

    //fieldref// w  w w. j a v a2  s. c  o m
    Optional<IEnvironmentVariable> envVar = envVars.stream()
            .filter(e -> "OPENSHIFT_KUBE_PING_NAMESPACE".equals(e.getName())).findFirst();
    assertTrue("Exp. to find env var", envVar.isPresent());
    IEnvVarSource from = envVar.get().getValueFrom();
    assertTrue(from instanceof IObjectFieldSelector);
    IObjectFieldSelector selector = (IObjectFieldSelector) from;
    assertEquals("v1", selector.getApiVersion());
    assertEquals("metadata.namespace", selector.getFieldPath());

    //configmapkeyref
    envVar = envVars.stream().filter(e -> "OPENSHIFT_CONFIGMAP_KEY_REF".equals(e.getName())).findFirst();
    assertTrue("Exp. to find env var", envVar.isPresent());
    from = envVar.get().getValueFrom();
    assertTrue(from instanceof IConfigMapKeySelector);
    IConfigMapKeySelector configSelector = (IConfigMapKeySelector) from;
    assertEquals("xyz", configSelector.getName());
    assertEquals("abc123", configSelector.getKey());

    //secretkeyref
    envVar = envVars.stream().filter(e -> "OPENSHIFT_SECRET_KEY_REF".equals(e.getName())).findFirst();
    assertTrue("Exp. to find env var", envVar.isPresent());
    from = envVar.get().getValueFrom();
    assertTrue(from instanceof ISecretKeySelector);
    ISecretKeySelector secretKeySelector = (ISecretKeySelector) from;
    assertEquals("bar", secretKeySelector.getName());
    assertEquals("foo", secretKeySelector.getKey());
}

---

From source file:com.github.horrorho.liquiddonkey.cloud.client.FileGroupsClient.java

public List<ICloud.MBSFileAuthToken> getFiles(HttpClient client, String dsPrsID, String mmeAuthToken,
        String mobileBackupUrl, String udid, String snapshot, Collection<ICloud.MBSFile> files)
        throws BadDataException, IOException {

    logger.trace("<< getFiles() < dsPrsID: {} udid: {} snapshot: {} files: {}", dsPrsID, udid, snapshot,
            files.size());//from   w w  w.  j  a  v  a 2s .  c o m
    logger.debug(marker, "-- getFiles() < files: {}", files);

    List<ICloud.MBSFile> postData = files.stream()
            .map(file -> ICloud.MBSFile.newBuilder().setFileID(file.getFileID()).build())
            .collect(Collectors.toList());

    byte[] encoded;
    try {
        encoded = ProtoBufArray.encode(postData);
    } catch (IOException ex) {
        throw new BadDataException(ex);
    }

    String uri = path(mobileBackupUrl, "mbs", dsPrsID, udid, snapshot, "getFiles");

    HttpPost post = new HttpPost(uri);
    headers.mobileBackupHeaders(dsPrsID, mmeAuthToken).stream().forEach(post::addHeader);
    post.setEntity(new ByteArrayEntity(encoded));
    List<ICloud.MBSFileAuthToken> tokens = client.execute(post, mbsFileAuthTokenListHandler);

    logger.debug(marker, "-- getFiles() > tokens: {}", tokens);
    logger.trace(">> getFiles() > {}", tokens.size());
    return tokens;
}

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From source file:io.klerch.alexa.state.handler.AlexaSessionStateHandler.java

@Override
public void removeModels(Collection<AlexaStateModel> models) throws AlexaStateException {
    Validate.notNull(models, "Collection of models to be removed must not be null.");
    final List<String> ids = models.stream().map(AlexaStateModel::getAttributeKey).collect(Collectors.toList());
    removeValues(ids);/*from  ww  w. j  a va  2 s .  c o m*/
}

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From source file:fi.vrk.xroad.catalog.collector.actors.ListClientsActorTest.java

@Test
public void testOnReceive() throws Exception {

    List<ClientType> memberlist = new ArrayList<>();

    memberlist.add(createClientType(XRoadObjectType.MEMBER, "member1", null));
    memberlist.add(createClientType(XRoadObjectType.SUBSYSTEM, "member1", "sub1"));
    memberlist.add(createClientType(XRoadObjectType.SUBSYSTEM, "member1", "sub2"));
    memberlist.add(createClientType(XRoadObjectType.SUBSYSTEM, "member1", "sub3"));

    memberlist.add(createClientType(XRoadObjectType.MEMBER, "member2", null));
    memberlist.add(createClientType(XRoadObjectType.SUBSYSTEM, "member2", "sssub1"));
    memberlist.add(createClientType(XRoadObjectType.SUBSYSTEM, "member2", "sssub2"));

    ClientList cMock = mock(ClientList.class);
    doReturn(cMock).when(restOperations).getForObject("http://localhost/listClients", ClientList.class);
    when(cMock.getMember()).thenReturn(memberlist);

    //        doNothing().when(listMethodsPoolRef).tell(Matchers.anyObject(), Matchers.anyObject());
    //    doNothing().when(listMethodsPoolRef).tell(Matchers.any(ClientType.class), Matchers.any(ActorRef.class));

    // Call onReceive
    listClientsActor.onReceive(ListClientsActor.START_COLLECTING);

    Set<Member> expectedMembers = new HashSet<>();
    Member member1 = new Member("FI", "GOV", "member1", "member1");
    Set<Subsystem> subsystems = new HashSet<>();
    subsystems.add(new Subsystem(member1, "sub1"));
    subsystems.add(new Subsystem(member1, "sub2"));
    subsystems.add(new Subsystem(member1, "sub3"));
    member1.setSubsystems(subsystems);/* w w  w  .j  av  a  2  s .  c o  m*/

    Member member2 = new Member("FI", "GOV", "member2", "member2");
    subsystems = new HashSet<>();
    subsystems.add(new Subsystem(member2, "sssub1"));
    subsystems.add(new Subsystem(member2, "sssub2"));
    member2.setSubsystems(subsystems);

    expectedMembers.add(member1);
    expectedMembers.add(member2);

    // Verify that the save method was called with correct member collection
    verify(catalogService).saveAllMembersAndSubsystems(argumentCaptor.capture());

    Collection<Member> resultMembers = argumentCaptor.getValue();
    Assert.assertEquals(HashMultiset.create(expectedMembers), HashMultiset.create(resultMembers));

    Assert.assertEquals(HashMultiset.create(member1.getAllSubsystems()), HashMultiset
            .create(resultMembers.stream().filter(m -> member1.equals(m)).findAny().get().getAllSubsystems()));

    Assert.assertEquals(HashMultiset.create(member2.getAllSubsystems()), HashMultiset
            .create(resultMembers.stream().filter(m -> member2.equals(m)).findAny().get().getAllSubsystems()));
}

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