Examples with FILE_MODIFIED_TIME_COLUMN_NAME io.trino.plugin.hive.HiveColumnHandle.FILE_MODIFIED_TIME_COLUMN_NAME used on opensource projects

Example 1 with FILE_MODIFIED_TIME_COLUMN_NAME

use of io.trino.plugin.hive.HiveColumnHandle.FILE_MODIFIED_TIME_COLUMN_NAME in project trino by trinodb.

the class HiveMetadata method columnMetadataGetter.

private static Function<HiveColumnHandle, ColumnMetadata> columnMetadataGetter(Table table) {
    ImmutableList.Builder<String> columnNames = ImmutableList.builder();
    table.getPartitionColumns().stream().map(Column::getName).forEach(columnNames::add);
    table.getDataColumns().stream().map(Column::getName).forEach(columnNames::add);
    List<String> allColumnNames = columnNames.build();
    if (allColumnNames.size() > Sets.newHashSet(allColumnNames).size()) {
        throw new TrinoException(HIVE_INVALID_METADATA, format("Hive metadata for table %s is invalid: Table descriptor contains duplicate columns", table.getTableName()));
    }
    List<Column> tableColumns = table.getDataColumns();
    ImmutableMap.Builder<String, Optional<String>> builder = ImmutableMap.builder();
    for (Column field : concat(tableColumns, table.getPartitionColumns())) {
        if (field.getComment().isPresent() && !field.getComment().get().equals("from deserializer")) {
            builder.put(field.getName(), field.getComment());
        } else {
            builder.put(field.getName(), Optional.empty());
        }
    }
    // add hidden columns
    builder.put(PATH_COLUMN_NAME, Optional.empty());
    if (table.getStorage().getBucketProperty().isPresent()) {
        builder.put(BUCKET_COLUMN_NAME, Optional.empty());
    }
    builder.put(FILE_SIZE_COLUMN_NAME, Optional.empty());
    builder.put(FILE_MODIFIED_TIME_COLUMN_NAME, Optional.empty());
    if (!table.getPartitionColumns().isEmpty()) {
        builder.put(PARTITION_COLUMN_NAME, Optional.empty());
    }
    if (isFullAcidTable(table.getParameters())) {
        for (String name : AcidSchema.ACID_COLUMN_NAMES) {
            builder.put(name, Optional.empty());
        }
    }
    Map<String, Optional<String>> columnComment = builder.buildOrThrow();
    return handle -> ColumnMetadata.builder().setName(handle.getName()).setType(handle.getType()).setComment(columnComment.get(handle.getName())).setExtraInfo(Optional.ofNullable(columnExtraInfo(handle.isPartitionKey()))).setHidden(handle.isHidden()).build();
}