Struct HashType 

pub struct HashType(pub String);

Newtype used for more explicit encoding/decoding of arbitrary length data into/from HASHTYPE columns.

Unlike UUID, this type is not subject to length checks because Exasol can accept multiple formats for these columns. While connections set the HASHTYPE_FORMAT database parameter to HEX when they’re opened to allow the driver to reliably use the reported column size for length checks for UUIDs, this only affects the column output. Exasol will still accept any valid input for the column, which can have different lengths depending on the data format.

See https://docs.exasol.com/db/latest/sql_references/data_types/datatypedetails.htm#HASHTYPE, in particular for your exact database version.

Tuple Fields

0: String

Trait Implementations

impl Clone for HashType

fn clone(&self) -> HashType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HashType

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

Formats the value using the given formatter.

impl<'r> Decode<'r, Exasol> for HashType

fn decode( value: ExaValueRef<'r>, ) -> Result<HashType, Box<dyn Error + Sync + Send>>

Decode a new value of this type using a raw value from the database.

impl Encode<'_, Exasol> for HashType

fn encode_by_ref( &self, buf: &mut ExaBuffer, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

Writes the value of self into buf without moving self.

fn size_hint(&self) -> usize

fn encode( self, buf: &mut <DB as Database>::ArgumentBuffer, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

where Self: Sized,

Writes the value of self into buf in the expected format for the database.

fn produces(&self) -> Option<<DB as Database>::TypeInfo>

impl Hash for HashType

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for HashType

fn cmp(&self, other: &HashType) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for HashType

fn eq(&self, other: &HashType) -> 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 PartialOrd for HashType

fn partial_cmp(&self, other: &HashType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Type<Exasol> for HashType

fn type_info() -> ExaTypeInfo

Returns the canonical SQL type for this Rust type.

fn compatible(ty: &<DB as Database>::TypeInfo) -> bool

Determines if this Rust type is compatible with the given SQL type.

impl Eq for HashType

impl ExaHasArrayType for HashType

impl StructuralPartialEq for HashType