Struct TableMetadataV1

pub struct TableMetadataV1 {

    pub format_version: VersionNumber<1>,
    pub table_uuid: Option<Uuid>,
    pub location: String,
    pub last_updated_ms: i64,
    pub last_column_id: i32,
    pub schema: SchemaV1,
    pub schemas: Option<Vec<SchemaV1>>,
    pub current_schema_id: Option<i32>,
    pub partition_spec: Vec<PartitionField>,
    pub partition_specs: Option<Vec<PartitionSpec>>,
    pub default_spec_id: Option<i32>,
    pub last_partition_id: Option<i32>,
    pub properties: HashMap<String, String>,
    pub current_snapshot_id: Option<i64>,
    pub snapshots: Option<Vec<SnapshotV1>>,
    pub snapshot_log: Vec<SnapshotLog>,
    pub metadata_log: Vec<MetadataLog>,
    pub sort_orders: Option<Vec<SortOrder>>,
    pub default_sort_order_id: Option<i32>,
}

Fields for the version 1 of the table metadata.

Fields

format_version: VersionNumber<1>

Integer Version for the format.

table_uuid: Option<Uuid>

A UUID that identifies the table

location: String

Location tables base location

last_updated_ms: i64

Timestamp in milliseconds from the unix epoch when the table was last updated.

last_column_id: i32

An integer; the highest assigned column ID for the table.

schema: SchemaV1

The table’s current schema.

schemas: Option<Vec<SchemaV1>>

A list of schemas, stored as objects with schema-id.

current_schema_id: Option<i32>

ID of the table’s current schema.

partition_spec: Vec<PartitionField>

The table’s current partition spec, stored as only fields. Note that this is used by writers to partition data, but is not used when reading because reads use the specs stored in manifest files.

partition_specs: Option<Vec<PartitionSpec>>

A list of partition specs, stored as full partition spec objects.

default_spec_id: Option<i32>

ID of the “current” spec that writers should use by default.

last_partition_id: Option<i32>

An integer; the highest assigned partition field ID across all partition specs for the table.

properties: HashMap<String, String>

A string to string map of table properties. This is used to control settings that affect reading and writing and is not intended to be used for arbitrary metadata. For example, commit.retry.num-retries is used to control the number of commit retries.

current_snapshot_id: Option<i64>

long ID of the current table snapshot; must be the same as the current ID of the main branch in refs.

snapshots: Option<Vec<SnapshotV1>>

A list of valid snapshots. Valid snapshots are snapshots for which all data files exist in the file system. A data file must not be deleted from the file system until the last snapshot in which it was listed is garbage collected.

snapshot_log: Vec<SnapshotLog>

A list (optional) of timestamp and snapshot ID pairs that encodes changes to the current snapshot for the table. Each time the current-snapshot-id is changed, a new entry should be added with the last-updated-ms and the new current-snapshot-id. When snapshots are expired from the list of valid snapshots, all entries before a snapshot that has expired should be removed.

metadata_log: Vec<MetadataLog>

A list (optional) of timestamp and metadata file location pairs that encodes changes to the previous metadata files for the table. Each time a new metadata file is created, a new entry of the previous metadata file location should be added to the list. Tables can be configured to remove oldest metadata log entries and keep a fixed-size log of the most recent entries after a commit.

sort_orders: Option<Vec<SortOrder>>

A list of sort orders, stored as full sort order objects.

default_sort_order_id: Option<i32>

Default sort order id of the table. Note that this could be used by writers, but is not used when reading because reads use the specs stored in manifest files.

Trait Implementations

impl Debug for TableMetadataV1

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TableMetadataV1

fn deserialize<__D>( __deserializer: __D, ) -> Result<TableMetadataV1, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<TableMetadata> for TableMetadataV1

fn from(v: TableMetadata) -> TableMetadataV1

Converts to this type from the input type.

impl PartialEq for TableMetadataV1

fn eq(&self, other: &TableMetadataV1) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for TableMetadataV1

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<TableMetadataV1> for TableMetadata

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: TableMetadataV1) -> Result<TableMetadata, Error>

Performs the conversion.

impl Eq for TableMetadataV1

impl StructuralPartialEq for TableMetadataV1