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:edu.mit.lib.mama.Mama.java

private static List<String> findItems(Handle hdl, String qfield, String value, String[] rfields) {
    String queryBase = "select lmv.* from metadatavalue lmv, metadatavalue rmv where "
            + "lmv.item_id = rmv.item_id and rmv.metadata_field_id = ? and rmv.text_value = ? ";
    Query<Map<String, Object>> query;
    if (null == rfields) { // just return default field
        query = hdl.createQuery(queryBase + "and lmv.metadata_field_id = ?").bind(2,
                findFieldId(hdl, URI_FIELD));
    } else { // filter out fields we can't resolve
        String inList = Arrays.asList(rfields).stream().map(f -> String.valueOf(findFieldId(hdl, f)))
                .filter(id -> id != "-1").collect(Collectors.joining(","));
        query = hdl.createQuery(queryBase + "and lmv.metadata_field_id in (" + inList + ")");
    }//from  w w w.  j  ava 2s.  c o m
    List<Mdv> rs = query.bind(0, findFieldId(hdl, qfield)).bind(1, value).map(new MdvMapper()).list();
    // group the list by Item, then construct a JSON object with each item's properties
    return rs.stream().collect(Collectors.groupingBy(Mdv::getItemId)).values().stream().map(p -> jsonObject(p))
            .collect(Collectors.toList());
}

From source file:de.metas.ui.web.window.datatypes.json.filters.JSONDocumentFilter.java

public static List<DocumentFilter> unwrapList(final List<JSONDocumentFilter> jsonFilters,
        final DocumentFilterDescriptorsProvider filterDescriptorProvider) {
    if (jsonFilters == null || jsonFilters.isEmpty()) {
        return ImmutableList.of();
    }/*  ww w  . j  ava2  s  .c o  m*/
    return jsonFilters.stream().map(jsonFilter -> unwrap(jsonFilter, filterDescriptorProvider))
            .filter(filter -> filter != null).collect(GuavaCollectors.toImmutableList());
}

From source file:jobhunter.api.infojobs.OfferRequest.java

/**
 * Generates a OfferRequest after parsing the given URL for the
 * InfoJobs' key./* w  w  w  .j  a va2  s .co  m*/
 * FTM I know of two URL formats where we can get the key from:
 * - Using the "of_codigo" query param
 * - Using the last 30 chars from a path param
 * This method handles both cases.
 * @param url
 * @return OfferRequest
 * @throws InfoJobsAPIException 
 */
public static OfferRequest of(String url) throws InfoJobsAPIException {
    List<NameValuePair> params = new ArrayList<>();
    try {
        params = URLEncodedUtils.parse(new URI(url), "UTF-8");
    } catch (URISyntaxException e) {
        l.error("Failed to build URI", e);
        throw new InfoJobsAPIException("Invalid URL " + url);
    }

    NameValuePair key = params.stream().filter(nvp -> nvp.getName().equalsIgnoreCase("of_codigo")).findFirst()
            .orElse(new BasicNameValuePair("of_codigo", StringUtils.right(url, 30)));

    return new OfferRequest(key);
}

From source file:com.freiheit.fuava.sftp.util.FilenameUtil.java

/**
 * Returns the lastest date/time from a list of filenames.
 *///from w  ww  .  j a v a 2s  . c o m
@CheckForNull
public static String extractLatestDateFromFilenames(final List<String> entryList, final FileType fileType,
        @Nullable final RemoteFileStatus status) throws ParseException {
    final Optional<String> maxDate = entryList.stream().filter(p -> p != null)
            .filter(f -> FilenameUtil.matchesSearchedFile(f, fileType, null, status))
            .max((a, b) -> Long.compare(getDateFromFilename(a), getDateFromFilename(b)));

    if (!maxDate.isPresent()) {
        return null; // no timestamp found
    }
    final String max = maxDate.get();

    return String.valueOf(getDateFromFilenameWithDelimiter(max));
}

From source file:com.github.mavogel.ilias.utils.IOUtils.java

/**
 * Checks the digits if they are in range against the choices.
 *
 * @param choices the choices// w w w . ja  va  2 s .c o m
 * @param digits the digits
 * @return true of they are correct, false otherwise
 */
private static boolean checkInputDigits(final List<?> choices, final List<Integer> digits) {
    return digits.stream().allMatch(idx -> isInRange(choices, idx));
}

From source file:com.github.mavogel.ilias.utils.IOUtils.java

/**
 * Parses the ranges from the tokens./*w w w .  j av a 2 s  .c  o m*/
 *
 * @param tokens the tokens @see {@link IOUtils#splitAndTrim(String)}
 * @return the ranges
 */
private static List<String[]> parseRanges(final List<String> tokens) {
    return tokens.stream().filter(s -> Defaults.RANGE_PATTERN.matcher(s).matches()).map(r -> r.split("-"))
            .collect(Collectors.toList());
}

From source file:com.github.mavogel.ilias.utils.IOUtils.java

/**
 * Parses the digits from the tokens/*from w  ww. jav  a 2s. c  om*/
 *
 * @param tokens the tokens @see {@link IOUtils#splitAndTrim(String)}
 * @return the tokens
 */
private static List<Integer> parseDigits(final List<String> tokens) {
    return tokens.stream().filter(s -> Defaults.DIGIT_PATTERN.matcher(s).matches()).map(Integer::valueOf)
            .collect(Collectors.toList());
}

From source file:com.wrmsr.wava.yen.translation.UnitTranslation.java

public static Function translateFunction(YFunction function, Map<Name, Signature> functionSignatures) {
    requireNonNull(function);//from  w  w  w  .  j av  a 2 s  . c  o  m
    checkArgument(function.getName().isPresent());
    checkArgument(function.getResult() != Type.UNREACHABLE);
    checkArgument(function.getBody().isPresent());
    checkArgument(function.getLocalNames().size() == function.getNumLocals());
    checkArgument(function.getLocalIndices().size() == function.getNumLocals());
    List<Pair<Name, Index>> localList = function.getLocalIndices().entrySet().stream()
            .map(e -> ImmutablePair.of(e.getKey(), e.getValue())).collect(Collectors.toList());
    localList.sort((l, r) -> l.getValue().compareTo(r.getValue()));
    checkArgument(
            enumerate(localList.stream().map(Pair::getRight)).allMatch(e -> e.getItem().get() == e.getIndex()));
    Locals locals = Locals
            .of(localList.stream().map(l -> ImmutablePair.of(l.getLeft(), function.getLocalType(l.getRight())))
                    .collect(toImmutableList()));
    Node body = NodeTranslation.translateNode(function.getBody().get(), functionSignatures);
    return new Function(function.getName().get(), function.getResult(), function.getNumParams(), locals, body);
}

From source file:act.installer.HMDBParser.java

/**
 * Get the text contents contained in a list of nodes.  Used for multi-valued fields that are siblings in the tree.
 * @param n A list of nodes whose text content should be extracted.
 * @return The text for each node.//  www . j a v a  2 s . c  om
 */
private static List<String> extractNodesText(List<Node> n) {
    return n.stream().map(Node::getTextContent).collect(Collectors.toList());
}

From source file:com.github.mavogel.ilias.utils.IOUtils.java

/**
 * Checks the ranges if they are meaningful against the choices.
 *
 * @param choices the choices/*  ww w.ja  v a  2s  .co m*/
 * @param ranges the ranges
 * @return true of they are correct, false otherwise
 */
private static boolean checkRanges(final List<?> choices, final List<String[]> ranges) {
    return ranges.stream()
            .allMatch(r -> isInMeaningfulRange(choices, Integer.valueOf(r[0]), Integer.valueOf(r[1])));
}