Struct DbString 

pub struct DbString(/* private fields */);

Owned database string.

DbString is a shared Arc<str> newtype. It is owned and 'static (no borrow), so the multi-writer committer’s assert_send_static::<SealedCommit>() proof holds for free. Ordering is lexicographic through the inner string, so query-visible comparisons and BTreeMap/BTreeSet iteration are content-ordered.

Implementations

impl DbString

pub fn from_string(value: String) -> CoreResult<Self>

Construct a DbString from an owned String.

This preserves the same IL013 guard as db_string and moves the owned string into shared storage.

Errors

Returns CoreError::StringTooLong if value exceeds MAX_DB_STRING_BYTES (IL013).

pub fn as_str(&self) -> &str

Return this database string as a string slice.

pub fn into_string(self) -> String

Consume this database string and return an owned String.

The returned string is copied out of the shared storage. Prefer DbString::as_str when a borrowed view is enough.

Trait Implementations

impl Archive for DbString

type Archived = ArchivedString

The archived representation of this type.

type Resolver = StringResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve(&self, resolver: Self::Resolver, out: Place<Self::Archived>)

Creates the archived version of this value at the given position and writes it to the given output.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

impl AsRef<str> for DbString

fn as_ref(&self) -> &str

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

impl Borrow<str> for DbString

fn borrow(&self) -> &str

Immutably borrows from an owned value.

impl Clone for DbString

fn clone(&self) -> DbString

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DbString

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DbString

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<D> Deserialize<DbString, D> for ArchivedString

where D: Fallible + ?Sized, D::Error: Source,

fn deserialize(&self, _deserializer: &mut D) -> Result<DbString, D::Error>

Deserializes using the given deserializer

impl Display for DbString

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

Formats the value using the given formatter.

impl Eq for DbString

impl From<DbString> for String

fn from(value: DbString) -> Self

Converts to this type from the input type.

impl FromIterator<DbString> for LabelSet

fn from_iter<T: IntoIterator<Item = DbString>>(iter: T) -> Self

Creates a value from an iterator.

impl Hash for DbString

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

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 DbString

fn cmp(&self, other: &DbString) -> 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 DbString

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

fn partial_cmp(&self, other: &DbString) -> 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 Serialize for DbString

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<S> Serialize<S> for DbString

where S: Fallible + ?Sized, S::Error: Source, str: SerializeUnsized<S>,

fn serialize(&self, serializer: &mut S) -> Result<Self::Resolver, S::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl StructuralPartialEq for DbString

impl TryFrom<&str> for DbString

type Error = CoreError

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<String> for DbString

type Error = CoreError

The type returned in the event of a conversion error.

fn try_from(value: String) -> Result<Self, Self::Error>

Performs the conversion.