Struct mz_repr::adt::jsonb::Jsonb

pub struct Jsonb { /* private fields */ }

An owned JSON value backed by a Row.

Similar to serde_json::Value, but the conversion to Row is free.

All numbers are represented as f64s. It is not possible to construct a Jsonb from a JSON object that contains integers that cannot be represented exactly as f64s.

Implementations

impl Jsonb

pub fn from_serde_json(val: Value) -> Result<Self, Error>

Constructs a new Jsonb from a serde_json::Value.

Errors if any of the contained integers cannot be represented exactly as an f64.

pub fn from_slice(buf: &[u8]) -> Result<Jsonb, Error>

Parses a Jsonb from a byte slice buf.

Errors if the slice is not valid JSON or if any of the contained integers cannot be represented exactly as an f64.

pub fn as_ref(&self) -> JsonbRef<'_>

Constructs a JsonbRef that references the JSON in this Jsonb.

pub fn from_row(row: Row) -> Jsonb

Constructs a Jsonb from a Row containing a single Datum.

Note that row is not checked for validity. Not all Datums are valid JSON.

pub fn into_row(self) -> Row

Consumes this Jsonb and returns the underlying Row.

Trait Implementations

impl AsColumnType for Jsonb

fn as_column_type() -> ColumnType

The SQL column type of this Rust type

impl Clone for Jsonb

fn clone(&self) -> Jsonb

Returns a copy of the value.

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

Performs copy-assignment from source.

impl DatumToPersist for Jsonb

type Data = <ProtoDatumToPersist as DatumToPersist>::Data

The persist columnar type we’re mapping to/from.

type Cfg = ()

Any information, in addition to the type of Self::Data, that is necessary to derive the columnar schema of this type. E.g. for ScalarType::Record, this will be the schema of the record.

const CFG: Self::Cfg = ()

const STATS_FN: StatsFn = _

Which logic to use for computing aggregate stats.

fn encode(col: &mut <Self::Data as Data>::Mut, datum: Datum<'_>)

Encodes and pushes the given Datum into the persist column.

fn decode(val: <Self::Data as Data>::Ref<'_>, row: &mut RowPacker<'_>)

Decodes the data with the given reference into a Datum. This Datum is returned by pushing it in to the given RowPacker.

fn encode_default(col: &mut <Self::Data as Data>::Mut)

Pushes the default value for this type into the column.

impl<'a, E> DatumType<'a, E> for Jsonb

fn nullable() -> bool

Whether this Rust type can represent NULL values

fn fallible() -> bool

Whether this Rust type can represent errors

fn try_from_result( res: Result<Datum<'a>, E> ) -> Result<Self, Result<Datum<'a>, E>>

Try to convert a Result whose Ok variant is a Datum into this native Rust type (Self). If it fails the error variant will contain the original result.

fn into_result(self, temp_storage: &'a RowArena) -> Result<Datum<'a>, E>

Convert this Rust type into a Result containing a Datum, or an error

impl Debug for Jsonb

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

Formats the value using the given formatter.

impl Display for Jsonb

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

Formats the value using the given formatter.

impl FromStr for Jsonb

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Ord for Jsonb

fn cmp(&self, other: &Jsonb) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for Jsonb

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Jsonb

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Eq for Jsonb

impl StructuralPartialEq for Jsonb