#[repr(transparent)]pub struct Entity(_);
Expand description
A uuid referring to an entity.
Methods from Deref<Target = Uuid>
sourcepub fn to_hyphenated_ref(&self) -> HyphenatedRef<'_>
pub fn to_hyphenated_ref(&self) -> HyphenatedRef<'_>
Get a borrowed HyphenatedRef
formatter.
sourcepub fn to_simple_ref(&self) -> SimpleRef<'_>
pub fn to_simple_ref(&self) -> SimpleRef<'_>
Get a borrowed SimpleRef
formatter.
sourcepub fn to_urn_ref(&self) -> UrnRef<'_>
pub fn to_urn_ref(&self) -> UrnRef<'_>
Get a borrowed UrnRef
formatter.
pub const NAMESPACE_DNS: Uuid
pub const NAMESPACE_OID: Uuid
pub const NAMESPACE_URL: Uuid
pub const NAMESPACE_X500: Uuid
sourcepub fn get_variant(&self) -> Option<Variant>
pub fn get_variant(&self) -> Option<Variant>
Returns the variant of the UUID structure.
This determines the interpretation of the structure of the UUID. Currently only the RFC4122 variant is generated by this module.
sourcepub fn get_version_num(&self) -> usize
pub fn get_version_num(&self) -> usize
Returns the version number of the UUID.
This represents the algorithm used to generate the contents.
Currently only the Random (V4) algorithm is supported by this module. There are security and privacy implications for using older versions - see Wikipedia: Universally Unique Identifier for details.
sourcepub fn get_version(&self) -> Option<Version>
pub fn get_version(&self) -> Option<Version>
Returns the version of the UUID.
This represents the algorithm used to generate the contents
sourcepub fn as_fields(&self) -> (u32, u16, u16, &[u8; 8])
pub fn as_fields(&self) -> (u32, u16, u16, &[u8; 8])
Returns the four field values of the UUID in big-endian order.
These values can be passed to the from_fields()
method to get the
original Uuid
back.
- The first field value represents the first group of (eight) hex
digits, taken as a big-endian
u32
value. For V1 UUIDs, this field represents the low 32 bits of the timestamp. - The second field value represents the second group of (four) hex
digits, taken as a big-endian
u16
value. For V1 UUIDs, this field represents the middle 16 bits of the timestamp. - The third field value represents the third group of (four) hex digits,
taken as a big-endian
u16
value. The 4 most significant bits give the UUID version, and for V1 UUIDs, the last 12 bits represent the high 12 bits of the timestamp. - The last field value represents the last two groups of four and twelve hex digits, taken in order. The first 1-3 bits of this indicate the UUID variant, and for V1 UUIDs, the next 13-15 bits indicate the clock sequence and the last 48 bits indicate the node ID.
Examples
use uuid::Uuid;
fn main() -> Result<(), uuid::Error> {
let uuid = Uuid::nil();
assert_eq!(uuid.as_fields(), (0, 0, 0, &[0u8; 8]));
let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
assert_eq!(
uuid.as_fields(),
(
0x936DA01F,
0x9ABD,
0x4D9D,
b"\x80\xC7\x02\xAF\x85\xC8\x22\xA8"
)
);
Ok(())
}
sourcepub fn to_fields_le(&self) -> (u32, u16, u16, &[u8; 8])
pub fn to_fields_le(&self) -> (u32, u16, u16, &[u8; 8])
Returns the four field values of the UUID in little-endian order.
The bytes in the returned integer fields will be converted from big-endian order.
Examples
use uuid::Uuid;
fn main() -> Result<(), uuid::Error> {
let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
assert_eq!(
uuid.to_fields_le(),
(
0x1FA06D93,
0xBD9A,
0x9D4D,
b"\x80\xC7\x02\xAF\x85\xC8\x22\xA8"
)
);
Ok(())
}
sourcepub fn as_u128(&self) -> u128
pub fn as_u128(&self) -> u128
Returns a 128bit value containing the UUID data.
The bytes in the UUID will be packed into a u128
, like the
Uuid::as_bytes
method.
Examples
use uuid::Uuid;
fn main() -> Result<(), uuid::Error> {
let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
assert_eq!(
uuid.as_u128(),
0x936DA01F9ABD4D9D80C702AF85C822A8,
);
Ok(())
}
sourcepub fn to_u128_le(&self) -> u128
pub fn to_u128_le(&self) -> u128
Returns a 128bit little-endian value containing the UUID data.
The bytes in the UUID will be reversed and packed into a u128
.
Note that this will produce a different result than
Uuid::to_fields_le
, because the entire UUID is reversed, rather
than reversing the individual fields in-place.
Examples
use uuid::Uuid;
fn main() -> Result<(), uuid::Error> {
let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
assert_eq!(
uuid.to_u128_le(),
0xA822C885AF02C7809D4DBD9A1FA06D93,
);
Ok(())
}
Trait Implementations
sourceimpl<'de> Deserialize<'de> for Entity
impl<'de> Deserialize<'de> for Entity
sourcefn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
D: Deserializer<'de>,
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
sourceimpl<'a> FromSql for Entity
impl<'a> FromSql for Entity
sourcefn column_result(value: SqlValueRef<'_>) -> FromSqlResult<Self>
fn column_result(value: SqlValueRef<'_>) -> FromSqlResult<Self>
Converts SQLite value into Rust value.
sourceimpl FromTypeTagAndSqlValue for Entity
impl FromTypeTagAndSqlValue for Entity
fn from_type_tag_and_sql_value(
type_tag: i64,
value: SqlValueRef<'_>
) -> FromSqlResult<Self>
sourceimpl ToSql for Entity
impl ToSql for Entity
sourcefn to_sql(&self) -> Result<ToSqlOutput<'_>>
fn to_sql(&self) -> Result<ToSqlOutput<'_>>
Converts Rust value to SQLite value
impl Copy for Entity
impl StructuralPartialEq for Entity
Auto Trait Implementations
impl RefUnwindSafe for Entity
impl Send for Entity
impl Sync for Entity
impl Unpin for Entity
impl UnwindSafe for Entity
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<'a, T> FromBorrowedStr<'a> for T where
T: FromStr,
impl<'a, T> FromBorrowedStr<'a> for T where
T: FromStr,
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more