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BackendRole

helios_persistence::composite::config

Enum BackendRole 

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pub enum BackendRole {
    Primary,
    Search,
    Graph,
    Terminology,
    Archive,
}
Expand description

Role of a backend in the composite storage.

Each backend serves a specific role in the composite architecture:

  • Primary: The authoritative store for all FHIR resources (CRUD, versioning, history)
  • Search: Optimized for full-text and advanced search operations
  • Graph: Optimized for relationship traversal (chained searches, _has)
  • Terminology: Handles code system expansion (:above, :below, :in, :not-in)
  • Archive: Cold storage for historical data

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Primary

Primary storage - the single source of truth for all FHIR resources. Handles all CRUD operations, versioning, and history.

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Search

Search optimization backend (e.g., Elasticsearch). Handles full-text search (_text, _content) and advanced text matching.

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Graph

Graph query backend (e.g., Neo4j). Handles chained parameters and reverse chaining (_has).

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Terminology

Terminology service. Handles code expansion for :above, :below, :in, :not-in modifiers.

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Archive

Archive storage for cold data (e.g., S3). Used for bulk export and historical data.

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impl BackendRole

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pub fn is_primary(&self) -> bool

Returns true if this role can be used for primary resource storage.

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pub fn is_secondary(&self) -> bool

Returns true if this is a secondary/auxiliary role.

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pub fn typical_capabilities(&self) -> Vec<BackendCapability>

Returns the typical capabilities associated with this role.

Trait Implementations§

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impl Clone for BackendRole

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fn clone(&self) -> BackendRole

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for BackendRole

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for BackendRole

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

Deserialize this value from the given Serde deserializer. Read more
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impl From<BackendRole> for BackendType

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fn from(role: BackendRole) -> Self

Converts to this type from the input type.
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impl Hash for BackendRole

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for BackendRole

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for BackendRole

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

Serialize this value into the given Serde serializer. Read more
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impl Copy for BackendRole

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impl Eq for BackendRole

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impl StructuralPartialEq for BackendRole

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