Example usage for java.util Collections emptyList

List of usage examples for java.util Collections emptyList

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Introduction

In this page you can find the example usage for java.util Collections emptyList.

Prototype

@SuppressWarnings("unchecked")
public static final <T> List<T> emptyList()

Source Link

Document

Returns an empty list (immutable).

Usage

From source file:org.trustedanalytics.datasetpublisher.service.HiveServiceTest.java

@Test
public void testCreateTable() throws Exception {
    // given/*from   w ww  .  ja  v a  2 s .  c  o  m*/
    final HiveTable hiveTable = new HiveTable("db", "table", Collections.emptyList(), "loc");
    Connection connection = mock(Connection.class);
    Statement stm = mock(Statement.class);

    // when
    when(connection.createStatement()).thenReturn(stm);
    when(hiveClient.getConnection(userIdentity)).thenReturn(connection);
    hiveService.createTable(hiveTable, userIdentity);

    // then
    verify(queryBuilder).createTable(hiveTable);
}

From source file:com.cloudera.oryx.kmeans.computation.local.Assignment.java

@Override
public List<String> call() {
    Config config = ConfigUtils.getDefaultConfig();
    List<String> ret = new ArrayList<>();
    if (doOutlierComputation(config)) {
        InboundSettings inboundSettings = InboundSettings.create(config);
        if (inboundSettings.getIdColumns().isEmpty()) {
            log.error("Cluster assignments require that id-columns be configured for each vector");
            return Collections.emptyList();
        }//from w w w .ja  v  a  2  s.c  om
        for (List<RealVector> fold : folds) {
            for (RealVector vec : fold) {
                NamedRealVector nvec = (NamedRealVector) vec;
                for (KMeansEvaluationData data : clusters) {
                    Distance d = data.getBest().getDistance(nvec);
                    ret.add(COMMA.join(nvec.getName(), data.getK(), d.getClosestCenterId(),
                            d.getSquaredDistance()));
                }
            }
        }
        return ret;
    }
    return Collections.emptyList();
}

From source file:com.github.ukase.toolkit.jar.JarSource.java

@Autowired
public JarSource(CompoundTemplateLoader templateLoader, UkaseSettings settings) {
    this.templateLoader = templateLoader;

    if (settings.getJar() == null) {
        classLoader = null;/*from   w w  w .  j  av a  2  s .  c om*/
        fonts = Collections.emptyList();

        return;
    }

    try {
        URL jar = settings.getJar().toURI().toURL();

        Collection<String> props = templateLoader.getResources(IS_HELPERS_CONFIGURATION);

        Properties properties = new Properties();
        props.stream().map(templateLoader::getResource).filter(entry -> entry != null).map(this::mapZipEntry)
                .filter(stream -> stream != null).forEach(stream -> loadStreamToProperties(stream, properties));
        properties.forEach(this::registerHelper);

        fonts = templateLoader.getResources(IS_FONT).parallelStream().map(font -> "jar:" + jar + "!/" + font)
                .collect(Collectors.toList());

        if (hasHelpers()) {
            URL[] jars = new URL[] { jar };
            classLoader = new URLClassLoader(jars, getClass().getClassLoader());
            helpers.forEach((name, className) -> helpersInstances.put(name, getHelper(className)));
        } else {
            classLoader = null;
        }

    } catch (IOException e) {
        throw new IllegalStateException("Wrong configuration", e);
    }
}

From source file:cz.muni.fi.mir.db.dao.impl.UserDAOImpl.java

@Override
public List<User> getUsersByRole(UserRole userRole) {
    List<User> resultList = Collections.emptyList();

    try {//from   www  .  ja  v  a 2  s . com
        resultList = entityManager
                .createQuery("SELECT u FROM users u WHERE :userRoleId MEMBER OF u.userRoles", User.class)
                .setParameter("userRoleId", userRole.getId()).getResultList();
    } catch (NoResultException nre) {
        logger.debug(nre);
    }

    return resultList;
}

From source file:com.netflix.spinnaker.kork.artifacts.parsing.JinjaArtifactExtractor.java

public List<Artifact> getArtifacts(String messagePayload) {
    if (StringUtils.isEmpty(messagePayload)) {
        return Collections.emptyList();
    }// w w w. j av a2s  .c o m
    return readArtifactList(jinjaTransform(messagePayload));
}

From source file:ch.ivyteam.ivy.maven.engine.EngineClassLoaderFactory.java

public static List<File> getOsgiBootstrapClasspath(File engineDirectory) {
    if (engineDirectory == null || !engineDirectory.isDirectory()) {
        return Collections.emptyList();
    }/*  w  ww  . j a va  2  s  .  c o  m*/
    List<File> classPathFiles = new ArrayList<>();
    addToClassPath(classPathFiles, new File(engineDirectory, "lib/boot"), new SuffixFileFilter(".jar"));
    return classPathFiles;
}

From source file:com.couchbase.workshop.QueryController.java

@RequestMapping("/prepared")
public List<String> prepared() {

    // IMPLEMENT ME

    return Collections.emptyList();
}

From source file:com.prowidesoftware.swift.model.SwiftMessageUtils.java

/**
 * Mirrors logic on {@link CurrencyContainer#currencyStrings()} including all fields
 * @param m/*from   ww  w  .  j  a v a  2 s .  c o  m*/
 * @return an empty list if none found
 */
public static List<String> currencyStrings(final SwiftMessage m) {
    if (m != null) {
        final SwiftBlock4 b4 = m.getBlock4();
        if (b4 != null && !b4.isEmpty()) {
            final ArrayList<String> curs = new ArrayList<String>();
            for (final Tag t : b4.getTags()) {
                final Field f = t.getField();
                if (f instanceof CurrencyContainer) {
                    final CurrencyContainer cc = (CurrencyContainer) f;
                    curs.addAll(cc.currencyStrings());
                }
            }
            return curs;
        }
    }
    return Collections.emptyList();
}

From source file:com.haulmont.yarg.loaders.impl.SqlDataLoader.java

@Override
public List<Map<String, Object>> loadData(ReportQuery reportQuery, BandData parentBand,
        Map<String, Object> params) {
    List resList;// www  . java  2 s  .co m
    final List<OutputValue> outputValues = new ArrayList<OutputValue>();

    String query = reportQuery.getScript();
    if (StringUtils.isBlank(query)) {
        return Collections.emptyList();
    }

    try {
        if (Boolean.TRUE.equals(reportQuery.getProcessTemplate())) {
            query = processQueryTemplate(query, parentBand, params);
        }
        final QueryPack pack = prepareQuery(query, parentBand, params);

        ArrayList<Object> resultingParams = new ArrayList<Object>();
        QueryParameter[] queryParameters = pack.getParams();
        for (QueryParameter queryParameter : queryParameters) {
            if (queryParameter.isSingleValue()) {
                resultingParams.add(queryParameter.getValue());
            } else {
                resultingParams.addAll(queryParameter.getMultipleValues());
            }
        }

        resList = runQuery(reportQuery, pack.getQuery(), resultingParams.toArray(),
                new ResultSetHandler<List>() {
                    @Override
                    public List handle(ResultSet rs) throws SQLException {
                        List<Object[]> resList = new ArrayList<Object[]>();

                        while (rs.next()) {
                            ResultSetMetaData metaData = rs.getMetaData();
                            if (outputValues.size() == 0) {
                                for (int columnIndex = 1; columnIndex <= metaData
                                        .getColumnCount(); columnIndex++) {
                                    String columnName = metaData.getColumnLabel(columnIndex);
                                    OutputValue outputValue = new OutputValue(columnName);
                                    setCaseSensitiveSynonym(columnName, outputValue);
                                    outputValues.add(outputValue);
                                }
                            }

                            Object[] values = new Object[metaData.getColumnCount()];
                            for (int columnIndex = 0; columnIndex < metaData.getColumnCount(); columnIndex++) {
                                values[columnIndex] = convertOutputValue(rs.getObject(columnIndex + 1));
                            }
                            resList.add(values);
                        }

                        return resList;
                    }

                    private void setCaseSensitiveSynonym(String columnName, OutputValue outputValue) {
                        Matcher matcher = Pattern.compile("(?i)as\\s*(" + columnName + ")")
                                .matcher(pack.getQuery());
                        if (matcher.find()) {
                            outputValue.setSynonym(matcher.group(1));
                        }
                    }
                });
    } catch (DataLoadingException e) {
        throw e;
    } catch (Throwable e) {
        throw new DataLoadingException(
                String.format("An error occurred while loading data for data set [%s]", reportQuery.getName()),
                e);
    }

    return fillOutputData(resList, outputValues);
}

From source file:info.novatec.testit.livingdoc.repository.FileSystemRepository.java

@Override
public List<String> listDocuments(String location) throws IOException {
    File parent = fileAt(location);
    if (!parent.exists()) {
        return Collections.emptyList();
    }// w w w.  j  ava2 s .  c om

    List<String> names = new ArrayList<String>();
    if (parent.isDirectory()) {
        for (File child : parent.listFiles(NOT_HIDDEN)) {
            if (child.isDirectory()) {
                names.addAll(listDocuments(relativePath(child)));
            } else if (!checkFileType(child).equals(FileTypes.NOTSUPPORTED)) {
                names.add(relativePath(child));
            }
        }
    }
    return names;
}