parquet::file::metadata

Struct RowGroupMetaDataBuilder

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pub struct RowGroupMetaDataBuilder(RowGroupMetaData);
Expand description

Builder for row group metadata.

Tuple Fields§

§0: RowGroupMetaData

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impl RowGroupMetaDataBuilder

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fn new(schema_descr: SchemaDescPtr) -> Self

Creates new builder from schema descriptor.

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pub fn set_num_rows(self, value: i64) -> Self

Sets number of rows in this row group.

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pub fn set_sorting_columns(self, value: Option<Vec<SortingColumn>>) -> Self

Sets the sorting order for columns

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pub fn set_total_byte_size(self, value: i64) -> Self

Sets total size in bytes for this row group.

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pub fn take_columns(&mut self) -> Vec<ColumnChunkMetaData>

Takes ownership of the the column metadata in this builder, and clears the list of columns.

This can be used for more efficient creation of a new RowGroupMetaData from an existing one.

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pub fn set_column_metadata(self, value: Vec<ColumnChunkMetaData>) -> Self

Sets column metadata for this row group.

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pub fn add_column_metadata(self, value: ColumnChunkMetaData) -> Self

Adds a column metadata to this row group

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pub fn set_ordinal(self, value: i16) -> Self

Sets ordinal for this row group.

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pub fn set_file_offset(self, value: i64) -> Self

Sets file offset for this row group.

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pub fn build(self) -> Result<RowGroupMetaData>

Builds row group metadata.

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