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

Example 11 with SqlColumnType

use of com.hazelcast.sql.SqlColumnType 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 12 with SqlColumnType

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

the class HazelcastCastFunction method checkOperandTypes.

@Override
public boolean checkOperandTypes(HazelcastCallBinding binding, boolean throwOnFailure) {
    RelDataType sourceType = binding.getOperandType(0);
    RelDataType targetType = binding.getOperandType(1);
    SqlNode sourceOperand = binding.operand(0);
    if (sourceOperand.getKind() == SqlKind.DYNAMIC_PARAM) {
        int sourceParameterIndex = ((SqlDynamicParam) sourceOperand).getIndex();
        binding.getValidator().setParameterConverter(sourceParameterIndex, NoOpParameterConverter.INSTANCE);
    }
    if (canCast(sourceType, targetType)) {
        return true;
    }
    if (throwOnFailure) {
        SqlColumnType sourceType0 = toHazelcastType(sourceType).getTypeFamily().getPublicType();
        SqlColumnType targetType0 = toHazelcastType(targetType).getTypeFamily().getPublicType();
        throw binding.newError(HazelcastResources.RESOURCES.cannotCastValue(sourceType0.toString(), targetType0.toString()));
    } else {
        return false;
    }
}