Struct RowField 

pub struct RowField<'a> { /* private fields */ }

The RowField struct represents a row within the RowDescription message.

Available fields:

• name: The field name

• table_oid: The table ID (OID) of the table the column is from, or 0 if not a column reference

• column_attr_number: The attribute number of the column, or 0 if not a column reference

• data_type_oid: The object ID of the field’s data type

• data_type_size: The data type size (negative if variable size)

• type_modifier: The type modifier

• format_code: The format code being used for the field (0 for text, 1 for binary)

Implementations

impl<'a> RowField<'a>

pub const fn is_buffer(buf: &'a [u8]) -> bool

Checks the constant values for this struct to determine whether this message matches.

pub fn new(buf: &'a [u8]) -> Result<Self, ParseError>

Creates a new instance of this struct from a given buffer.

pub fn name(&self) -> ZTString<'a>

The field name

pub fn table_oid(&self) -> i32

The table ID (OID) of the table the column is from, or 0 if not a column reference

pub fn column_attr_number(&self) -> i16

The attribute number of the column, or 0 if not a column reference

pub fn data_type_oid(&self) -> i32

The object ID of the field’s data type

pub fn data_type_size(&self) -> i16

The data type size (negative if variable size)

pub fn type_modifier(&self) -> i32

The type modifier

pub fn format_code(&self) -> FormatCode

The format code being used for the field (0 for text, 1 for binary)

pub fn to_vec(self) -> Vec<u8>

Trait Implementations

impl AsRef<[u8]> for RowField<'_>

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl<'a> Clone for RowField<'a>

fn clone(&self) -> RowField<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> DataType for RowField<'a>

const META: StructFieldMeta

fn encode_usize(buf: &mut BufWriter<'_>, value: usize)

fn decode_usize(buf: &mut &[u8]) -> Result<usize, ParseError>

impl Debug for RowField<'_>

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

Formats the value using the given formatter.

impl<'a> DecoderFor<'a, RowField<'a>> for RowField<'a>

fn decode_for(buf: &mut &'a [u8]) -> Result<Self, ParseError>

impl<'a> Default for RowField<'a>

fn default() -> RowField<'a>

Returns the “default value” for a type.

impl<NAME, TABLE_OID, COLUMN_ATTR_NUMBER, DATA_TYPE_OID, DATA_TYPE_SIZE, TYPE_MODIFIER, FORMAT_CODE> EncoderFor<RowField<'static>> for &RowFieldBuilder<NAME, TABLE_OID, COLUMN_ATTR_NUMBER, DATA_TYPE_OID, DATA_TYPE_SIZE, TYPE_MODIFIER, FORMAT_CODE>

where NAME: EncoderFor<ZTString<'static>>, TABLE_OID: EncoderFor<i32>, COLUMN_ATTR_NUMBER: EncoderFor<i16>, DATA_TYPE_OID: EncoderFor<i32>, DATA_TYPE_SIZE: EncoderFor<i16>, TYPE_MODIFIER: EncoderFor<i32>, FORMAT_CODE: EncoderFor<FormatCode>,

fn encode_for(&self, buf: &mut BufWriter<'_>)

impl<'a> EncoderFor<RowField<'static>> for RowField<'a>

fn encode_for(&self, buf: &mut BufWriter<'_>)

impl<NAME, TABLE_OID, COLUMN_ATTR_NUMBER, DATA_TYPE_OID, DATA_TYPE_SIZE, TYPE_MODIFIER, FORMAT_CODE> EncoderFor<RowField<'static>> for RowFieldBuilder<NAME, TABLE_OID, COLUMN_ATTR_NUMBER, DATA_TYPE_OID, DATA_TYPE_SIZE, TYPE_MODIFIER, FORMAT_CODE>

where NAME: EncoderFor<ZTString<'static>>, TABLE_OID: EncoderFor<i32>, COLUMN_ATTR_NUMBER: EncoderFor<i16>, DATA_TYPE_OID: EncoderFor<i32>, DATA_TYPE_SIZE: EncoderFor<i16>, TYPE_MODIFIER: EncoderFor<i32>, FORMAT_CODE: EncoderFor<FormatCode>,

fn encode_for(&self, buf: &mut BufWriter<'_>)

impl PartialEq for RowField<'_>

fn eq(&self, other: &Self) -> 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<'a> StructMeta for RowField<'a>

Implements a trait containing the fields of the struct, allowing us to compute some useful things.

const FIELDS: StructFields

type Struct<'__struct> = RowField<'__struct>

fn new<'__next_lifetime>( buf: &'__next_lifetime [u8], ) -> Result<Self::Struct<'__next_lifetime>, ParseError>

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

const FIELD_COUNT: usize = _

const IS_FIXED_SIZE: bool = _

const FIXED_SIZE: Option<usize> = _

const LENGTH_FIELD_INDEX: Option<usize> = _

const HAS_LENGTH_FIELD: bool = _

impl<'a> Copy for RowField<'a>

impl Eq for RowField<'_>

impl StructAttributeFieldCount<{<$name<'_> as $crate::prelude::StructMeta>::FIELD_COUNT}> for RowField<'_>

Implements a trait indicating that the struct has a field count.

impl StructAttributeFixedSize<{<$name<'_> as $crate::prelude::StructMeta>::IS_FIXED_SIZE}> for RowField<'_>

Implements a trait indicating that the struct has a fixed size. This needs to be a trait-generic rather than and associated constant for us to use elsewhere.

impl StructAttributeHasLengthField<{<$name<'_> as $crate::prelude::StructMeta>::HAS_LENGTH_FIELD}> for RowField<'_>

Implements a trait indicating that the struct has a length field.