Examples with StringJoiner java.util.StringJoiner used on opensource projects

Example 1 with StringJoiner

use of java.util.StringJoiner in project che by eclipse.

the class MavenArtifact method getDisplayString.

public String getDisplayString() {
    StringJoiner joiner = new StringJoiner(":");
    joiner.setEmptyValue("<unknown>");
    joiner.add(groupId).add(artifactId).add(version);
    return joiner.toString();
}

Example 2 with StringJoiner

use of java.util.StringJoiner in project java-design-patterns by iluwatar.

the class App method prettyPrint.

private static <E> void prettyPrint(String delimiter, String prefix, Iterable<E> iterable) {
    StringJoiner joiner = new StringJoiner(delimiter, prefix, ".");
    Iterator<E> iterator = iterable.iterator();
    while (iterator.hasNext()) {
        joiner.add(iterator.next().toString());
    }
    LOGGER.info(joiner.toString());
}

Example 3 with StringJoiner

use of java.util.StringJoiner in project jersey by jersey.

the class CombinedFeedControllerTest method testCreate.

@Test
public void testCreate() {
    Form form = new Form();
    form.param("title", params[0]);
    form.param("description", params[1]);
    form.param("urls", new StringJoiner(",").add(params[2]).add(params[3]).toString());
    form.param("refreshPeriod", params[4]);
    Response response = target().request().post(Entity.entity(form, MediaType.APPLICATION_FORM_URLENCODED_TYPE));
    assertEquals(Status.OK.getStatusCode(), response.getStatus());
    String html = response.readEntity(String.class);
    // HTML page contains all information about the created entity
    assertTrue(html.contains(params[0]) && html.contains(params[1]) && html.contains(params[2]) && html.contains(params[3]) && html.contains(params[4]));
}

Example 4 with StringJoiner

use of java.util.StringJoiner in project presto by prestodb.

the class ShardPredicate method createShardPredicate.

private static String createShardPredicate(ImmutableList.Builder<JDBCType> types, ImmutableList.Builder<Object> values, Domain domain, JDBCType jdbcType) {
    List<Range> ranges = domain.getValues().getRanges().getOrderedRanges();
    // only apply predicates if all ranges are single values
    if (ranges.isEmpty() || !ranges.stream().allMatch(Range::isSingleValue)) {
        return "true";
    }
    ImmutableList.Builder<Object> valuesBuilder = ImmutableList.builder();
    ImmutableList.Builder<JDBCType> typesBuilder = ImmutableList.builder();
    StringJoiner rangePredicate = new StringJoiner(" OR ");
    for (Range range : ranges) {
        Slice uuidText = (Slice) range.getSingleValue();
        try {
            Slice uuidBytes = uuidStringToBytes(uuidText);
            typesBuilder.add(jdbcType);
            valuesBuilder.add(uuidBytes);
        } catch (IllegalArgumentException e) {
            return "true";
        }
        rangePredicate.add("shard_uuid = ?");
    }
    types.addAll(typesBuilder.build());
    values.addAll(valuesBuilder.build());
    return rangePredicate.toString();
}

Example 5 with StringJoiner

use of java.util.StringJoiner in project presto by prestodb.

the class TestRaptorIntegrationSmokeTest method testShardingByTemporalTimestampColumn.

@Test
public void testShardingByTemporalTimestampColumn() throws Exception {
    // Make sure we have at least 2 different orderdate.
    assertEquals(computeActual("SELECT count(DISTINCT orderdate) >= 2 FROM orders WHERE orderdate < date '1992-02-08'").getOnlyValue(), true);
    assertUpdate("CREATE TABLE test_shard_temporal_timestamp(col1 BIGINT, col2 TIMESTAMP) WITH (temporal_column = 'col2')");
    int rows = 20;
    StringJoiner joiner = new StringJoiner(", ", "INSERT INTO test_shard_temporal_timestamp VALUES ", "");
    for (int i = 0; i < rows; i++) {
        joiner.add(format("(%s, TIMESTAMP '2016-08-08 01:00' + interval '%s' hour)", i, i * 4));
    }
    assertUpdate(joiner.toString(), format("VALUES(%s)", rows));
    MaterializedResult results = computeActual("SELECT format_datetime(col2, 'yyyyMMdd'), \"$shard_uuid\" FROM test_shard_temporal_timestamp");
    assertEquals(results.getRowCount(), rows);
    // Each shard will only contain data of one date.
    SetMultimap<String, String> shardDateMap = HashMultimap.create();
    for (MaterializedRow row : results.getMaterializedRows()) {
        shardDateMap.put((String) row.getField(1), (String) row.getField(0));
    }
    for (Collection<String> dates : shardDateMap.asMap().values()) {
        assertEquals(dates.size(), 1);
    }
    // Ensure one shard can contain different timestamps from the same day
    assertLessThan(shardDateMap.size(), rows);
}