Struct holochain_persistence_api::eav::eavi::EntityAttributeValueIndex

pub struct EntityAttributeValueIndex<A: Attribute> { /* fields omitted */ }

The basic struct for EntityAttributeValue triple, implemented as AddressableContent including the necessary serialization inherited.

Methods

impl<A: Attribute> EntityAttributeValueIndex<A>

pub fn new(
    entity: &Entity,
    attribute: &A,
    value: &Value
) -> PersistenceResult<EntityAttributeValueIndex<A>>

pub fn new_with_index(
    entity: &Entity,
    attribute: &A,
    value: &Value,
    timestamp: i64
) -> PersistenceResult<EntityAttributeValueIndex<A>>

pub fn entity(&self) -> Entity

pub fn attribute(&self) -> A

pub fn value(&self) -> Value

pub fn index(&self) -> Index

pub fn set_index(&mut self, new_index: i64)

Trait Implementations

impl<A: Attribute> AddressableContent for EntityAttributeValueIndex<A> where
    A: DeserializeOwned, 

fn content(&self) -> Content

the Content that would be stored in a ContentAddressableStorage the default implementation covers anything that implements From for JsonString

fn try_from_content(content: &Content) -> Result<Self, JsonError>

restore/deserialize the original struct/type from serialized Content the default implementation covers anything that implements From for Foo

fn address(&self) -> Address

the Address the Content would be available at once stored in a ContentAddressableStorage default implementation is provided as hashing Content with sha256 the default implementation should cover most use-cases it is critical that there are no hash collisions across all stored AddressableContent it is recommended to implement an "address space" prefix for address algorithms that don't offer strong cryptographic guarantees like sha et. al.

impl<A: Clone + Attribute> Clone for EntityAttributeValueIndex<A>

fn clone(&self) -> EntityAttributeValueIndex<A>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<A: Debug + Attribute> Debug for EntityAttributeValueIndex<A>

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

Formats the value using the given formatter.

impl<'de, A: Attribute> Deserialize<'de> for EntityAttributeValueIndex<A> where
    A: Deserialize<'de>, 

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<A: Eq + Attribute> Eq for EntityAttributeValueIndex<A>

impl<'_, A: Attribute> From<&'_ EntityAttributeValueIndex<A>> for JsonString where
    A: DeserializeOwned, 

fn from(v: &EntityAttributeValueIndex<A>) -> JsonString

Performs the conversion.

impl<A: Attribute> From<EntityAttributeValueIndex<A>> for JsonString where
    A: DeserializeOwned, 

fn from(v: EntityAttributeValueIndex<A>) -> JsonString

Performs the conversion.

impl<A: Hash + Attribute> Hash for EntityAttributeValueIndex<A>

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, 

Feeds a slice of this type into the given [Hasher].

impl<A: Ord + Attribute> Ord for EntityAttributeValueIndex<A>

fn cmp(&self, other: &EntityAttributeValueIndex<A>) -> Ordering

This method returns an [Ordering] between self and other.

#[must_use] fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use] fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use] fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl<A: PartialEq + Attribute> PartialEq<EntityAttributeValueIndex<A>> for EntityAttributeValueIndex<A>

fn eq(&self, other: &EntityAttributeValueIndex<A>) -> bool

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

fn ne(&self, other: &EntityAttributeValueIndex<A>) -> bool

This method tests for !=.

impl<A: PartialOrd + Attribute> PartialOrd<EntityAttributeValueIndex<A>> for EntityAttributeValueIndex<A>

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

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

fn lt(&self, other: &EntityAttributeValueIndex<A>) -> bool

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

fn le(&self, other: &EntityAttributeValueIndex<A>) -> bool

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

fn gt(&self, other: &EntityAttributeValueIndex<A>) -> bool

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

fn ge(&self, other: &EntityAttributeValueIndex<A>) -> bool

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

impl<A: Attribute> Serialize for EntityAttributeValueIndex<A> where
    A: Serialize, 

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<A: Attribute> StructuralEq for EntityAttributeValueIndex<A>

impl<A: Attribute> StructuralPartialEq for EntityAttributeValueIndex<A>

impl<'a, A: Attribute> TryFrom<&'a JsonString> for EntityAttributeValueIndex<A> where
    A: DeserializeOwned, 

type Error = JsonError

The type returned in the event of a conversion error.

fn try_from(json_string: &JsonString) -> Result<Self, Self::Error>

Performs the conversion.

impl<A: Attribute> TryFrom<JsonString> for EntityAttributeValueIndex<A> where
    A: DeserializeOwned, 

type Error = JsonError

The type returned in the event of a conversion error.

fn try_from(json_string: JsonString) -> Result<Self, Self::Error>

Performs the conversion.