Struct BlobMetadataBuilder

pub struct BlobMetadataBuilder {
    blob_type: Option<String>,
    input_fields: Option<Vec<i32>>,
    snapshot_id: Option<i64>,
    sequence_number: Option<i64>,
    offset: Option<i64>,
    length: Option<i64>,
    compression_codec: Option<Option<CompressionCodec>>,
    properties: Option<HashMap<String, String>>,
}

Builder for BlobMetadata.

Fields

blob_type: Option<String>

Blob type

input_fields: Option<Vec<i32>>

For Iceberg, it’ list of field IDs the blob was computed for; the order of items is used to compute sketches stored in the blob.

For usage outside the context of Iceberg, it can be ignored.

snapshot_id: Option<i64>

For Iceberg, it’s ID of the Iceberg table’s snapshot the blob was computed from.

For usage outside the context of Iceberg, it can be ignored.

sequence_number: Option<i64>

For Iceberg, it’s sequence number of the Iceberg table’s snapshot the blob was computed from.

For usage outside the context of Iceberg, it can be ignored.

offset: Option<i64>

The offset in the file where the blob contents start

length: Option<i64>

The length of the blob stored in the file (after compression, if compressed)

compression_codec: Option<Option<CompressionCodec>>

See CompressionCodec. If omitted, the data is assumed to be uncompressed.

properties: Option<HashMap<String, String>>

Storage for arbitrary meta-information about the blob

Implementations

impl BlobMetadataBuilder

pub fn blob_type(&mut self, value: String) -> &mut Self

Blob type

pub fn input_fields(&mut self, value: Vec<i32>) -> &mut Self

For Iceberg, it’ list of field IDs the blob was computed for; the order of items is used to compute sketches stored in the blob.

For usage outside the context of Iceberg, it can be ignored.

pub fn snapshot_id(&mut self, value: i64) -> &mut Self

For Iceberg, it’s ID of the Iceberg table’s snapshot the blob was computed from.

For usage outside the context of Iceberg, it can be ignored.

pub fn sequence_number(&mut self, value: i64) -> &mut Self

For Iceberg, it’s sequence number of the Iceberg table’s snapshot the blob was computed from.

For usage outside the context of Iceberg, it can be ignored.

pub fn offset(&mut self, value: i64) -> &mut Self

The offset in the file where the blob contents start

pub fn length(&mut self, value: i64) -> &mut Self

The length of the blob stored in the file (after compression, if compressed)

pub fn compression_codec( &mut self, value: Option<CompressionCodec>, ) -> &mut Self

See CompressionCodec. If omitted, the data is assumed to be uncompressed.

pub fn properties(&mut self, value: HashMap<String, String>) -> &mut Self

Storage for arbitrary meta-information about the blob

pub fn build(&self) -> Result<BlobMetadata, BlobMetadataBuilderError>

Builds a new BlobMetadata.

Errors

If a required field has not been initialized.

fn create_empty() -> Self

Create an empty builder, with all fields set to None or PhantomData.

Trait Implementations

impl Clone for BlobMetadataBuilder

fn clone(&self) -> BlobMetadataBuilder

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for BlobMetadataBuilder

fn default() -> Self

Returns the “default value” for a type.