Struct CommandGetPrimaryKeys

pub struct CommandGetPrimaryKeys {
    pub catalog: Option<String>,
    pub db_schema: Option<String>,
    pub table: String,
}

Represents a request to retrieve the primary keys of a table on a Flight SQL enabled backend. Used in the command member of FlightDescriptor for the following RPC calls:

• GetSchema: return the Arrow schema of the query.
• GetFlightInfo: execute the catalog metadata request.

The returned Arrow schema will be: < catalog_name: utf8, db_schema_name: utf8, table_name: utf8 not null, column_name: utf8 not null, key_name: utf8, key_sequence: int32 not null

The returned data should be ordered by catalog_name, db_schema_name, table_name, key_name, then key_sequence.

Fields

catalog: Option<String>

Specifies the catalog to search for the table. An empty string retrieves those without a catalog. If omitted the catalog name should not be used to narrow the search.

db_schema: Option<String>

Specifies the schema to search for the table. An empty string retrieves those without a schema. If omitted the schema name should not be used to narrow the search.

table: String

Specifies the table to get the primary keys for.

Implementations

impl CommandGetPrimaryKeys

pub fn catalog(&self) -> &str

Returns the value of catalog, or the default value if catalog is unset.

pub fn db_schema(&self) -> &str

Returns the value of db_schema, or the default value if db_schema is unset.

Trait Implementations

impl Clone for CommandGetPrimaryKeys

fn clone(&self) -> CommandGetPrimaryKeys

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CommandGetPrimaryKeys

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

Formats the value using the given formatter.

impl Default for CommandGetPrimaryKeys

fn default() -> Self

Returns the “default value” for a type.

impl Message for CommandGetPrimaryKeys

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for CommandGetPrimaryKeys

fn eq(&self, other: &CommandGetPrimaryKeys) -> 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 ProstMessageExt for CommandGetPrimaryKeys

fn type_url() -> &'static str

type_url for this Message

fn as_any(&self) -> Any

Convert this Message to Any

impl StructuralPartialEq for CommandGetPrimaryKeys