Example usage for java.util List clear

Introduction

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

Prototype

void clear();

Source Link

Document

Removes all of the elements from this list (optional operation).

Usage

From source file:cz.muni.fi.mir.tools.Tools.java

/**
 * Method removes element from given List at specified position.
 * @param <T> type of list//from  w w  w .ja  v a 2 s  . c o m
 * @param list from which we would like to remove element
 * @param position of element to be deleted
 */
@Deprecated
public <T> void removeElementFromList(List<T> list, int position) { // iba mna mohla napadnut niekedy takato blbost a nepouzit sublist... 
    List<T> result = new ArrayList<>();
    int i = 0;
    for (T t : list) {
        if (i != position) {
            result.add(t);
        }
        i++;
    }

    list.clear();
    list.addAll(result);
}

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From source file:convert.ConvertStrata.java

@Test
public void convert() throws IOException {
    System.out.println("Convert strata test");
    LineIterator it = FileUtils.lineIterator(
            new File("\\\\delphi\\felles\\alle\\smund\\stox\\strata_norskehavstoktet\\stratum1-6 2014.txt"));
    it.nextLine(); // skip header
    List<Coordinate> coords = new ArrayList<>();
    String strata = null;/*from   w w w .  j av  a  2  s . c om*/
    while (it.hasNext()) {
        String line = it.nextLine().trim();
        String elms[] = line.split("\t");
        String s = elms[2];
        if (strata != null && !s.equals(strata)) {
            MultiPolygon mp = JTSUtils.createMultiPolygon(Arrays.asList(JTSUtils.createLineString(coords)));
            System.out.println(strata + "\t" + mp);
            coords.clear();
        }
        coords.add(new Coordinate(Conversion.safeStringtoDoubleNULL(elms[1]),
                Conversion.safeStringtoDoubleNULL(elms[0])));
        strata = s;
    }
    MultiPolygon mp = JTSUtils.createMultiPolygon(Arrays.asList(JTSUtils.createLineString(coords)));
    System.out.println(strata + "\t" + mp);
}

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From source file:Main.java

private static <E> void updateList(List<E> origList, Collection<? extends E> updateList, boolean add,
        boolean replace, boolean remove, BiPredicate<? super E, ? super E> equalTester,
        BiConsumer<List<E>, Collection<? extends E>> adder) {
    List<E> itemsToRemove = null;
    List<E> itemsToAdd = null;
    for (E update : updateList) {
        boolean origListContainsUpdate = false;
        ListIterator<E> origIter = origList.listIterator();
        while (origIter.hasNext()) {
            E orig = origIter.next();//from   w w  w .  j  a va  2s .  c o m
            if (equalTester.test(orig, update)) {
                origListContainsUpdate = true;
                if (remove) {
                    if (itemsToRemove == null) {
                        itemsToRemove = new ArrayList<>(origList);
                    }
                    itemsToRemove.remove(orig);
                }
                if (replace) {
                    origIter.set(update);
                }
                break;
            }
        }
        if (!origListContainsUpdate && add) {
            if (itemsToAdd == null) {
                itemsToAdd = new ArrayList<>();
            }
            itemsToAdd.add(update);
        }
    }
    if (remove) {
        if (itemsToRemove != null) {
            origList.removeAll(itemsToRemove);
        } else {
            origList.clear();
        }
    }
    if (itemsToAdd != null) {
        adder.accept(origList, itemsToAdd);
    }
}

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From source file:com.google.api.ads.dfp.appengine.util.Channels.java

/**
 * Sends a list of objects via the channel API. Objects are broken up into batches because the
 * size of each message is capped./*from   ww  w . j a v  a  2s .c  o m*/
 *
 * @param channelKey the key to send a message via the Channel API
 * @param objects a list of objects to send via the channel
 * @param tag the name of the content panel to send objects
 * @param requestId the ID of the incoming data request to respond to
 */
public void sendObjects(String channelKey, List<?> objects, String tag, String requestId) {
    checkPreconditions(channelKey, tag, requestId);
    List<Object> list = Lists.newArrayList();
    int count = 0;
    for (Object object : objects) {
        count += 1;
        list.add(object);
        if (count % BATCH_SIZE == 0) {
            sendMessage(channelKey, ImmutableList.copyOf(list), tag, requestId);
            list.clear();
        }
    }
    if (!list.isEmpty()) {
        sendMessage(channelKey, list, tag, requestId);
    }
    if (count == 0) {
        sendNoResultMessage(channelKey, tag, requestId);
    }
}

---

From source file:com.koda.integ.hbase.test.BlockCacheSimpleRegionTests.java

/**
 * Test region scanner.// w  w w . j a va 2 s. c  o m
 *
 * @throws IOException Signals that an I/O exception has occurred.
 */
public void testRegionScanner() throws IOException {
    LOG.info("Test Region scanner");
    Scan scan = new Scan();
    scan.setStartRow(region.getStartKey());
    scan.setStopRow(region.getEndKey());
    RegionScanner scanner = region.getScanner(scan);
    //Store store = region.getStore(CF);
    //StoreScanner scanner = new StoreScanner(store,  store.getScanInfo(), scan,  null);
    long start = System.currentTimeMillis();
    int total = 0;
    List<Cell> result = new ArrayList<Cell>();
    while (scanner.next(result)) {
        total++;
        result.clear();
    }

    LOG.info("Test Region scanner finished. Found " + total + " in " + (System.currentTimeMillis() - start)
            + "ms");
    LOG.info("cache hits =" + cache.getStats().getHitCount() + " miss=" + cache.getStats().getMissCount());

}

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From source file:com.healthmarketscience.jackcess.util.ImportUtil.java

/**
 * Copy a delimited text file into a new (or optionally exixsting) table in
 * this database.//  w w w . j ava2 s  . c  om
 * 
 * @param name Name of the new table to create
 * @param in Source reader to import
 * @param delim Regular expression representing the delimiter string.
 * @param quote the quote character
 * @param filter valid import filter
 * @param useExistingTable if {@code true} use current table if it already
 *                         exists, otherwise, create new table with unique
 *                         name
 * @param header if {@code false} the first line is not a header row, only
 *               valid if useExistingTable is {@code true}
 *
 * @return the name of the imported table
 * 
 * @see Builder
 */
public static String importReader(BufferedReader in, Database db, String name, String delim, char quote,
        ImportFilter filter, boolean useExistingTable, boolean header) throws IOException {
    String line = in.readLine();
    if (line == null || line.trim().length() == 0) {
        return null;
    }

    Pattern delimPat = Pattern.compile(delim);

    try {
        name = TableBuilder.escapeIdentifier(name);
        Table table = null;
        if (!useExistingTable || ((table = db.getTable(name)) == null)) {

            List<ColumnBuilder> columns = new LinkedList<ColumnBuilder>();
            Object[] columnNames = splitLine(line, delimPat, quote, in, 0);

            for (int i = 0; i < columnNames.length; i++) {
                columns.add(new ColumnBuilder((String) columnNames[i], DataType.TEXT).escapeName()
                        .setLength((short) DataType.TEXT.getMaxSize()).toColumn());
            }

            table = createUniqueTable(db, name, columns, null, filter);

            // the first row was a header row
            header = true;
        }

        List<Object[]> rows = new ArrayList<Object[]>(COPY_TABLE_BATCH_SIZE);
        int numColumns = table.getColumnCount();

        if (!header) {
            // first line is _not_ a header line
            Object[] data = splitLine(line, delimPat, quote, in, numColumns);
            data = filter.filterRow(data);
            if (data != null) {
                rows.add(data);
            }
        }

        while ((line = in.readLine()) != null) {
            Object[] data = splitLine(line, delimPat, quote, in, numColumns);
            data = filter.filterRow(data);
            if (data == null) {
                continue;
            }
            rows.add(data);
            if (rows.size() == COPY_TABLE_BATCH_SIZE) {
                table.addRows(rows);
                rows.clear();
            }
        }
        if (rows.size() > 0) {
            table.addRows(rows);
        }

        return table.getName();

    } catch (SQLException e) {
        throw (IOException) new IOException(e.getMessage()).initCause(e);
    }
}

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From source file:com.mozilla.bagheera.hazelcast.persistence.ElasticSearchIndexMapStore.java

@Override
public void storeAll(Map<String, String> pairs) {
    LOG.info("mapstore: received something in queue for storeAll:" + pairs.size());
    LOG.debug("calling storeAll method");
    List<String> rowIds = new ArrayList<String>();
    for (String row : pairs.keySet()) {
        if (StringUtils.isNotBlank(row)) {
            rowIds.add(row);//from   w  w  w .j a  v a2 s.c  o m
            if (rowIds.size() % 100 == 0) {
                LOG.info("map size: " + pairs.size());
                indexJsons(rowIds);
                rowIds.clear();
            }
        }
    }
    if (rowIds.size() > 0) {
        LOG.info("map size: " + pairs.size());
        indexJsons(rowIds);
    }

}

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From source file:com.exploringspatial.dao.impl.ConflictDaoImpl.java

@Override
public int reloadTableFromCsv(final String csvAbsoluteFilePath) {
    try {//from   www . ja v  a 2 s  .c  om
        assert (!csvAbsoluteFilePath.isEmpty());
        jdbcTemplate.update("TRUNCATE TABLE CONFLICT");
        final int batchSize = 1000;
        final List<Conflict> conflicts = jdbcTemplate.query(
                "SELECT * FROM CSVREAD('".concat(csvAbsoluteFilePath).concat("')"), new ConflictRowMapper());
        final List<Conflict> batch = new ArrayList<Conflict>(batchSize);
        for (Conflict conflict : conflicts) {
            batch.add(conflict);
            if (batch.size() == batchSize) {
                batchUpdate(batch);
                batch.clear();
            }
        }
        if (!batch.isEmpty()) {
            batchUpdate(batch);
            batch.clear();
        }
        return conflicts.size();
    } catch (Exception e) {
        throw new RuntimeException("Could not load " + csvAbsoluteFilePath, e);
    }
}

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From source file:com.jaspersoft.studio.server.wizard.find.FindResourcePage.java

private void setTypes() {
    List<String> tps = finderUI.getTypes();
    tps.clear();
    for (Button b : typesMap.values())
        if (b.getSelection())
            tps.add(typesMap.inverse().get(b));
}

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From source file:hoot.services.osm.OsmTestUtils.java

public static Set<Long> createTestRelationsNoWays(final long changesetId, final Set<Long> nodeIds)
        throws Exception {
    Set<Long> relationIds = new LinkedHashSet<Long>();
    final Long[] nodeIdsArr = nodeIds.toArray(new Long[] {});
    Map<String, String> tags = new HashMap<String, String>();
    List<RelationMember> members = new ArrayList<RelationMember>();

    members.add(new RelationMember(nodeIdsArr[0], ElementType.Node, "role1"));
    members.add(new RelationMember(nodeIdsArr[2], ElementType.Node));
    tags.put("key 1", "val 1");
    final long firstRelationId = Relation.insertNew(changesetId, mapId, members, tags, conn);
    relationIds.add(firstRelationId);//from   ww w.j  a v a 2s  .  c o m
    tags.clear();
    members.clear();

    tags.put("key 2", "val 2");
    tags.put("key 3", "val 3");
    members.add(new RelationMember(nodeIdsArr[4], ElementType.Node, "role1"));
    members.add(new RelationMember(firstRelationId, ElementType.Relation, "role1"));
    relationIds.add(Relation.insertNew(changesetId, mapId, members, tags, conn));
    tags.clear();
    members.clear();

    tags.put("key 4", "val 4");
    members.add(new RelationMember(nodeIdsArr[2], ElementType.Node, "role1"));
    relationIds.add(Relation.insertNew(changesetId, mapId, members, tags, conn));
    tags.clear();
    members.clear();

    return relationIds;
}

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