Examples with SqlColumnMetadata com.hazelcast.sql.SqlColumnMetadata used on opensource projects

Example 6 with SqlColumnMetadata

use of com.hazelcast.sql.SqlColumnMetadata in project hazelcast by hazelcast.

the class SqlConsole method determineAlignments.

private static Alignment[] determineAlignments(SqlRowMetadata metadata) {
    int colCount = metadata.getColumnCount();
    Alignment[] alignments = new Alignment[colCount];
    for (int i = 0; i < colCount; i++) {
        SqlColumnMetadata colMetadata = metadata.getColumn(i);
        SqlColumnType type = colMetadata.getType();
        switch(type) {
            case BIGINT:
            case DECIMAL:
            case DOUBLE:
            case INTEGER:
            case REAL:
            case SMALLINT:
            case TINYINT:
                alignments[i] = Alignment.RIGHT;
                break;
            case BOOLEAN:
            case DATE:
            case NULL:
            case OBJECT:
            case TIMESTAMP:
            case VARCHAR:
            case TIMESTAMP_WITH_TIME_ZONE:
            default:
                alignments[i] = Alignment.LEFT;
        }
    }
    return alignments;
}

Example 7 with SqlColumnMetadata

use of com.hazelcast.sql.SqlColumnMetadata in project hazelcast by hazelcast.

the class PlanExecutor method execute.

SqlResult execute(ExplainStatementPlan plan) {
    Stream<String> planRows;
    SqlRowMetadata metadata = new SqlRowMetadata(singletonList(new SqlColumnMetadata("rel", VARCHAR, false)));
    InternalSerializationService serializationService = Util.getSerializationService(hazelcastInstance);
    planRows = Arrays.stream(plan.getRel().explain().split(LE));
    return new SqlResultImpl(QueryId.create(hazelcastInstance.getLocalEndpoint().getUuid()), new StaticQueryResultProducerImpl(planRows.map(rel -> new JetSqlRow(serializationService, new Object[] { rel })).iterator()), metadata, false);
}

Example 8 with SqlColumnMetadata

use of com.hazelcast.sql.SqlColumnMetadata in project hazelcast by hazelcast.

the class SqlRowImpl method toString.

@Override
public String toString() {
    StringJoiner joiner = new StringJoiner(", ", "[", "]");
    for (int i = 0; i < rowMetadata.getColumnCount(); i++) {
        SqlColumnMetadata columnMetadata = rowMetadata.getColumn(i);
        // toString() is often called by the debugger, it must not mutate the state by serializing or deserializing.
        Object columnValue = row.getMaybeSerialized(i);
        joiner.add(columnMetadata.getName() + ' ' + columnMetadata.getType() + '=' + columnValue);
    }
    return joiner.toString();
}

Example 9 with SqlColumnMetadata

use of com.hazelcast.sql.SqlColumnMetadata in project hazelcast by hazelcast.

the class QueryClientStateRegistry method fetchInternal.

private SqlPage fetchInternal(QueryClientState clientCursor, int cursorBufferSize, InternalSerializationService serializationService, boolean respondImmediately) {
    List<SqlColumnMetadata> columns = clientCursor.getSqlResult().getRowMetadata().getColumns();
    List<SqlColumnType> columnTypes = new ArrayList<>(columns.size());
    for (SqlColumnMetadata column : columns) {
        columnTypes.add(column.getType());
    }
    if (respondImmediately) {
        return SqlPage.fromRows(columnTypes, Collections.emptyList(), false, serializationService);
    }
    ResultIterator<SqlRow> iterator = clientCursor.getIterator();
    try {
        List<SqlRow> rows = new ArrayList<>(cursorBufferSize);
        boolean last = fetchPage(iterator, rows, cursorBufferSize);
        return SqlPage.fromRows(columnTypes, rows, last, serializationService);
    } catch (HazelcastSqlException e) {
        // it happens, the cursor is already closed with the error, so we just re-throw.
        throw e;
    } catch (Exception e) {
        // Any other exception indicates that something has happened outside of the internal query state. For example,
        // we may fail to serialize a specific column value to Data. We have to close the cursor in this case.
        AbstractSqlResult result = clientCursor.getSqlResult();
        QueryException error = QueryException.error("Failed to prepare the SQL result for the client: " + e.getMessage(), e);
        result.close(error);
        throw error;
    }
}

Example 10 with SqlColumnMetadata

use of com.hazelcast.sql.SqlColumnMetadata in project hazelcast by hazelcast.

the class ShowStatementTest method test_showStatement_metadata.

@Test
public void test_showStatement_metadata() {
    SqlRowMetadata expectedMetadata = new SqlRowMetadata(singletonList(new SqlColumnMetadata("name", SqlColumnType.VARCHAR, false)));
    assertThat(sqlService.execute("show mappings").getRowMetadata()).isEqualTo(expectedMetadata);
    assertThat(sqlService.execute("show jobs").getRowMetadata()).isEqualTo(expectedMetadata);
}