Example usage for java.util List stream

Introduction

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

Prototype

default Stream<E> stream() 

Source Link

Document

Returns a sequential Stream with this collection as its source.

Usage

From source file:alfio.controller.AdminController.java

private static void downloadTicketsCSV(String eventName, String fileName, String[] header, Principal principal,
        HttpServletResponse response, EventManager eventManager, Function<Ticket, String[]> ticketMapper)
        throws IOException {
    Validate.isTrue(StringUtils.isNotBlank(eventName), "Event name is not valid");
    List<Ticket> tickets = eventManager.findAllConfirmedTickets(eventName, principal.getName());
    response.setContentType("text/csv;charset=UTF-8");
    response.setHeader("Content-Disposition", "attachment; filename=" + eventName + "-" + fileName + ".csv");
    try (ServletOutputStream out = response.getOutputStream()) {
        for (int marker : BOM_MARKERS) {//UGLY-MODE_ON: specify that the file is written in UTF-8 with BOM, thanks to alexr http://stackoverflow.com/a/4192897
            out.write(marker);// ww w . java 2 s  .c o m
        }
        CSVWriter writer = new CSVWriter(new OutputStreamWriter(out));
        writer.writeNext(header);
        tickets.stream().map(ticketMapper).forEach(writer::writeNext);
        writer.flush();
        out.flush();
    }
}

---

From source file:cognition.common.utils.StringTools.java

/**
 *
 * @param text The source text.//  www  .ja  v a  2  s  .  c  om
 * @param search The text to be searched in {@code text}.
 * @param threshold The threshold value between 0.0 - 1.0.
 * @return A list of MatchingWindow objects.
 */
public static List<MatchingWindow> getMatchingWindowsAboveThreshold(String text, String search,
        double threshold) {
    if (StringUtils.isBlank(text)) {
        return new ArrayList<>();
    }
    if (StringUtils.isBlank(search)) {
        return new ArrayList<>();
    }
    String[] addressWords = search.split(" ");
    int bagSize = addressWords.length;
    String[] textWords = text.split(" ");
    int textWordCount = textWords.length;
    List<MatchingWindow> windows = new ArrayList<>();
    for (int i = 0; i < textWordCount; i++) {
        MatchingWindow window = takeBag(textWords, i, bagSize);
        window.setScoreAccordingTo(addressWords);
        window.setMatchingText(text.substring(window.getBegin(), window.getEnd()));
        windows.add(window);
    }

    Collections.sort(windows);
    windows = windows.stream().filter(window -> window.isScoreAboveThreshold(threshold))
            .collect(Collectors.toList());

    return windows;
}

---

From source file:com.khartec.waltz.jobs.sample.MeasurablesGenerator.java

private static void generateRegions(DSLContext dsl) throws IOException {
    List<String> lines = readLines(OrgUnitGenerator.class.getResourceAsStream("/regions.csv"));

    System.out.println("Deleting existing Regions & Countries ...");
    int deletedCount = dsl.deleteFrom(MEASURABLE)
            .where(MEASURABLE.MEASURABLE_CATEGORY_ID
                    .in(DSL.select(MEASURABLE_CATEGORY.ID).from(MEASURABLE_CATEGORY)
                            .where(MEASURABLE_CATEGORY.EXTERNAL_ID.eq(REGION_CATEGORY_EXTERNAL_ID))))
            .and(MEASURABLE.PROVENANCE.eq("demo")).execute();
    System.out.println("Deleted: " + deletedCount + " existing Regions & Countries");

    Map<String, Map<String, Set<String>>> regionHierarchy = lines.stream().skip(1)
            .map(line -> StringUtils.splitPreserveAllTokens(line, ","))
            .filter(cells -> notEmpty(cells[0]) && notEmpty(cells[6]) && notEmpty(cells[5]))
            .map(cells -> Tuple.tuple(cells[0], cells[6], cells[5]))
            .collect(groupingBy(t -> t.v3, groupingBy(t -> t.v2, mapping(t -> t.v1, toSet()))));

    final long measurableCategoryId = dsl.select(MEASURABLE_CATEGORY.ID).from(MEASURABLE_CATEGORY)
            .where(MEASURABLE_CATEGORY.EXTERNAL_ID.eq(REGION_CATEGORY_EXTERNAL_ID)).fetchAny().value1();

    AtomicInteger insertCount = new AtomicInteger(0);
    regionHierarchy.forEach((region, subRegionMap) -> {
        final long regionId = dsl.insertInto(MEASURABLE)
                .set(createRegion(null, region, measurableCategoryId, false)).returning(MEASURABLE.ID)
                .fetchOne().getId();/*from  www.j a v  a2s.c om*/
        insertCount.incrementAndGet();

        subRegionMap.forEach((subRegion, countries) -> {
            final long subRegionId = dsl.insertInto(MEASURABLE)
                    .set(createRegion(regionId, subRegion, measurableCategoryId, true)).returning(MEASURABLE.ID)
                    .fetchOne().getId();
            insertCount.incrementAndGet();

            insertCount.addAndGet(dsl.batchInsert(countries.stream()
                    .map(country -> createRegion(subRegionId, country, measurableCategoryId, true))
                    .collect(toList())).execute().length);
        });
    });

    System.out.println("Inserted: " + insertCount + " Regions & Countries");
}

---

From source file:com.thinkbiganalytics.metadata.jpa.support.GenericQueryDslFilter.java

/**
 * convert a passed in filter string to a list of criteria objects
 *
 * @param filterString a filter, <column><operator><value> Example: jobinstance.name==jobName,jobExcutionId>=200.  that will search for all jobs named 'jobName' and jobExecutionId >= 200
 * @return a list of criteria objects//from   ww w  .jav a2s. co m
 */
public static List<SearchCriteria> parseFilterString(String filterString) {
    List<SearchCriteria> searchCriterias = new ArrayList<>();
    if (StringUtils.isNotBlank(filterString)) {

        //first match and split on , for various filters
        String[] filterConditions = filterString.split(",(?=(?:[^\\\"]*\\\"[^\\\"]*\\\")*[^\\\"]*$)");
        List<String> filterConditionsList = Arrays.asList(filterConditions);

        //Pattern used to match the <column><operator><value>
        String validOperatorsRegEx = operators.keySet().stream().map(key -> key)
                .collect(Collectors.joining("|"));
        Pattern columnOperatorValuePattern = Pattern.compile("(.*)(" + validOperatorsRegEx + ")(.*)");

        filterConditionsList.stream().forEach(filter -> {
            Matcher matcher = columnOperatorValuePattern.matcher(filter);
            while (matcher.find()) {
                String field = matcher.group(1);
                String operator = matcher.group(2);
                String value = matcher.group(3);
                searchCriterias.add(new SearchCriteria(field, operator, value));
            }
        });
    }
    return searchCriterias;
}

---

From source file:io.pravega.controller.store.stream.tables.TableHelper.java

public static boolean isScaleInputValid(final List<Integer> segmentsToSeal,
        final List<AbstractMap.SimpleEntry<Double, Double>> newRanges, final byte[] segmentTable) {
    boolean newRangesPredicate = newRanges.stream()
            .noneMatch(x -> x.getKey() >= x.getValue() && x.getKey() >= 0 && x.getValue() > 0);

    List<AbstractMap.SimpleEntry<Double, Double>> oldRanges = segmentsToSeal.stream()
            .map(segment -> SegmentRecord.readRecord(segmentTable, segment)
                    .map(x -> new AbstractMap.SimpleEntry<>(x.getRoutingKeyStart(), x.getRoutingKeyEnd())))
            .filter(Optional::isPresent).map(Optional::get).collect(Collectors.toList());

    return newRangesPredicate && reduce(oldRanges).equals(reduce(newRanges));
}

---

From source file:org.sahli.asciidoc.confluence.publisher.client.http.ConfluenceRestClientTest.java

private static CloseableHttpClient recordHttpClientForMultipleJsonAndStatusCodeResponse(
        List<String> jsonResponses, List<Integer> statusCodes) throws IOException {
    CloseableHttpResponse httpResponseMock = mock(CloseableHttpResponse.class);

    List<HttpEntity> httpEntities = jsonResponses.stream()
            .map(ConfluenceRestClientTest::recordHttpEntityForContent).collect(toList());
    when(httpResponseMock.getEntity()).thenReturn(httpEntities.get(0),
            httpEntities.subList(1, httpEntities.size()).toArray(new HttpEntity[httpEntities.size() - 1]));

    List<StatusLine> statusLines = statusCodes.stream().map(ConfluenceRestClientTest::recordStatusLine)
            .collect(toList());/*from  w  w  w . j a v  a  2s.c  o m*/
    when(httpResponseMock.getStatusLine()).thenReturn(statusLines.get(0),
            statusLines.subList(1, statusLines.size()).toArray(new StatusLine[statusLines.size() - 1]));

    CloseableHttpClient httpClientMock = anyCloseableHttpClient();
    when(httpClientMock.execute(any(HttpPost.class), any(HttpContext.class))).thenReturn(httpResponseMock);

    return httpClientMock;
}

---

From source file:com.strider.datadefender.DataDefender.java

/**
 * Returns the list of unparsed arguments as a list of table names by
 * transforming the strings to lower case.
 *
 * This guarantees table names to be in lower case, so functions comparing
 * can use contains() with a lower case name.
 *
 * If tables names are not supplied via command line, then will search the property file
 * for space separated list of table names.
 *
 * @param tableNames//from   w  w  w.j a  va 2 s  .  c om
 * @param appProperties application property file
 * @param dbProperties database property file
 * @return The list of table names
 */
public static Set<String> getTableNames(final List<String> tableNames, final Properties dbProperties) {
    List<String> tableNameList = new ArrayList<String>(Arrays.asList(new String[tableNames.size()]));

    Collections.copy(tableNameList, tableNames);

    if (tableNameList.isEmpty()) {
        final String tableStr = dbProperties.getProperty("include-tables");

        if (tableStr != null) {
            tableNameList = Arrays.asList(tableStr.split(","));
            LOG.debug("Adding tables from property file.");
        }
    }

    final Set<String> tables = tableNameList.stream().map(s -> s.toLowerCase(Locale.ENGLISH))
            .collect(Collectors.toSet());

    LOG.info("Tables: " + Arrays.toString(tables.toArray()));

    return tables;
}

---

From source file:uk.ac.ebi.ep.data.service.EnzymePortalService.java

private static Predicate enzymesByNamePrefixes(List<String> namePrefixes) {
    QUniprotEntry enzyme = QUniprotEntry.uniprotEntry;
    StringExpression idPrefix = enzyme.relatedProteinsId.namePrefix;
    BooleanBuilder builder = new BooleanBuilder();
    namePrefixes.stream().forEach(prefix -> {

        builder.or(idPrefix.equalsIgnoreCase(prefix));

    });//from  ww  w.  j  a v a 2 s.  co m
    return builder;
}

---

From source file:JacksonJacksumTest.java

@BeforeClass
public static void setUpClass() throws IOException {

    List<HashResultHolder> list = new ObjectMapper().readValue(
            JacksonJacksumTest.class.getResourceAsStream("/jacksum_image.json"),
            new TypeReference<List<HashResultHolder>>() {
            });/*from www  .ja  va  2  s.  co m*/

    IMAGE_FILE_RESULTS = list.stream()
            .collect(Collectors.toMap(HashResultHolder::getAlgorithm, Function.identity()));

    /*Map<String, String> map = JacksumAPI.getAvailableAlgorithms();
     map.keySet().stream()
     .forEach(cannonicalName -> System.out.println(cannonicalName.toUpperCase()+"(\""+map.get(cannonicalName)+"\",\""+cannonicalName+"\", \"alias\"),"));
     */
    /*JacksumAPI.getAvailableAlgorithms().keySet().stream()
     .forEach(name -> System.out.println("@Benchmark @BenchmarkMode(Mode.AverageTime) @OutputTimeUnit(TimeUnit.MILLISECONDS)  public String "+name+"FileAlt() {return this.getFileHashValue(this.getChecksum(\""+name+"\", true), FILE);}"));
     */
    //        IMAGE_FILE_RESULTS.keySet().stream().forEach(str -> System.out.println("@Test public void test_" + str + "(){this.individualTest(\"" + str + "\");}"));
    list = new ObjectMapper().readValue(JacksonJacksumTest.class.getResourceAsStream("/jacksum_text.json"),
            new TypeReference<List<HashResultHolder>>() {
            });

    TEXT_FILE_RESULTS = list.stream()
            .collect(Collectors.toMap(HashResultHolder::getAlgorithm, Function.identity()));

    list = new ObjectMapper().readValue(JacksonJacksumTest.class.getResourceAsStream("/jacksum_string.json"),
            new TypeReference<List<HashResultHolder>>() {
            });

    STRING_RESULTS = list.stream()
            .collect(Collectors.toMap(HashResultHolder::getAlgorithm, Function.identity()));

}

---

From source file:de.micromata.genome.jpa.metainf.MetaInfoUtils.java

/**
 * To entity meta data.//w  w w  . jav  a2  s  . c om
 *
 * @param mt the mt
 * @return the entity metadata
 */
private static EntityMetadata toEntityMetaData(ManagedType<?> mt) {
    EntityMetadataBean ret = new EntityMetadataBean();
    ret.setJavaType(mt.getJavaType());
    if (mt instanceof EntityType) {
        EntityType ift = (EntityType) mt;
        ret.setDatabaseName(ift.getName());
    }
    // TODO RK delete propDesc
    List<PropertyDescriptor> propDescs = Arrays.asList(PropertyUtils.getPropertyDescriptors(ret.getJavaType()));
    Set<?> attr = mt.getAttributes();
    for (Object oa : attr) {

        Attribute<?, ?> at = (Attribute<?, ?>) oa;
        Optional<PropertyDescriptor> pdo = propDescs.stream().filter((el) -> el.getName().equals(at.getName()))
                .findFirst();
        ColumnMetadata colm = getColumnMetaData(ret, mt.getJavaType(), at, pdo);
        if (colm != null) {
            ret.getColumns().put(colm.getName(), colm);
        }
    }
    /// EntityType.getName() is not correct.
    Table[] tabs = mt.getJavaType().getAnnotationsByType(Table.class);
    if (tabs != null && tabs.length > 0) {
        for (Table tab : tabs) {
            if (StringUtils.isNotBlank(tab.name()) == true) {
                ret.setDatabaseName(tab.name());
                break;
            }
        }
    }
    return ret;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• 46
• 47
• 48
• 49
• 50
• »