Struct Metadata 

pub struct Metadata { /* private fields */ }

Available on crate feature internal-api only.

Implementations

impl Metadata

pub fn try_new( name: Option<String>, description: Option<String>, schema: StructType, partition_columns: Vec<String>, created_time: i64, configuration: HashMap<String, String>, ) -> DeltaResult<Self>

Create a new Metadata instances.

Errors

Returns an error if there are any metadata columns in the schema.

pub fn try_new_from_data(data: &dyn EngineData) -> DeltaResult<Option<Metadata>>

pub fn id(&self) -> &str

pub fn name(&self) -> Option<&str>

pub fn description(&self) -> Option<&str>

pub fn created_time(&self) -> Option<i64>

pub fn configuration(&self) -> &HashMap<String, String>

pub fn parse_schema(&self) -> DeltaResult<StructType>

pub fn partition_columns(&self) -> &Vec<String>

pub fn parse_table_properties(&self) -> TableProperties

Parse the metadata configuration HashMap<String, String> into a TableProperties struct. Note that parsing is infallible – any items that fail to parse are simply propagated through to the TableProperties.unknown_properties field.

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Metadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl Default for Metadata

fn default() -> Metadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Metadata

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Metadata

fn eq(&self, other: &Metadata) -> 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 Metadata

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ToSchema for Metadata

fn to_schema() -> StructType

Available on crate feature internal-api only.

impl Eq for Metadata

impl StructuralPartialEq for Metadata