Trait BackendTransaction

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pub trait BackendTransaction {
    type IdlLayerType: IdlArcSqliteTransaction;
    type RuvType: ReplicationUpdateVectorTransaction;

Show 17 methods    // Required methods
    fn get_idlayer(&mut self) -> &mut Self::IdlLayerType;
    fn get_ruv(&mut self) -> &mut Self::RuvType;
    fn get_idxmeta_ref(&self) -> &IdxMeta;

    // Provided methods
    fn filter2idl(
        &mut self,
        filt: &FilterResolved,
        thres: usize,
    ) -> Result<(IdList, FilterPlan), OperationError> { ... }
    fn filter2idl_sub(
        &mut self,
        attr: &Attribute,
        sub_idx_key: String,
    ) -> Result<(IdList, FilterPlan), OperationError> { ... }
    fn search(
        &mut self,
        erl: &Limits,
        filt: &Filter<FilterValidResolved>,
    ) -> Result<Vec<Arc<EntrySealedCommitted>>, OperationError> { ... }
    fn exists(
        &mut self,
        erl: &Limits,
        filt: &Filter<FilterValidResolved>,
    ) -> Result<bool, OperationError> { ... }
    fn retrieve_range(
        &mut self,
        ranges: &BTreeMap<Uuid, ReplCidRange>,
    ) -> Result<Vec<Arc<EntrySealedCommitted>>, OperationError> { ... }
    fn verify(&mut self) -> Vec<Result<(), ConsistencyError>> { ... }
    fn verify_entry_index(
        &mut self,
        e: &EntrySealedCommitted,
    ) -> Result<(), ConsistencyError> { ... }
    fn verify_indexes(&mut self) -> Vec<Result<(), ConsistencyError>> { ... }
    fn verify_ruv(&mut self, results: &mut Vec<Result<(), ConsistencyError>>) { ... }
    fn backup(&mut self, dst_path: &Path) -> Result<(), OperationError> { ... }
    fn name2uuid(&mut self, name: &str) -> Result<Option<Uuid>, OperationError> { ... }
    fn externalid2uuid(
        &mut self,
        name: &str,
    ) -> Result<Option<Uuid>, OperationError> { ... }
    fn uuid2spn(&mut self, uuid: Uuid) -> Result<Option<Value>, OperationError> { ... }
    fn uuid2rdn(&mut self, uuid: Uuid) -> Result<Option<String>, OperationError> { ... }
}

Required Associated Types§

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type IdlLayerType: IdlArcSqliteTransaction

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type RuvType: ReplicationUpdateVectorTransaction

Required Methods§

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fn get_idlayer(&mut self) -> &mut Self::IdlLayerType

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fn get_ruv(&mut self) -> &mut Self::RuvType

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fn get_idxmeta_ref(&self) -> &IdxMeta

Provided Methods§

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fn filter2idl( &mut self, filt: &FilterResolved, thres: usize, ) -> Result<(IdList, FilterPlan), OperationError>

Recursively apply a filter, transforming into IdList’s on the way. This builds a query execution log, so that it can be examined how an operation proceeded.

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fn filter2idl_sub( &mut self, attr: &Attribute, sub_idx_key: String, ) -> Result<(IdList, FilterPlan), OperationError>

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fn search( &mut self, erl: &Limits, filt: &Filter<FilterValidResolved>, ) -> Result<Vec<Arc<EntrySealedCommitted>>, OperationError>

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fn exists( &mut self, erl: &Limits, filt: &Filter<FilterValidResolved>, ) -> Result<bool, OperationError>

Given a filter, assert some condition exists. Basically, this is a specialised case of search, where we don’t need to load any candidates if they match. This is heavily used in uuid refint and attr uniqueness.

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