227 lines
7.4 KiB
Nim
227 lines
7.4 KiB
Nim
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# Nimbus
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# Copyright (c) 2018 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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{.push raises: [].}
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import
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eth/common,
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results,
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../../../errors
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# Annotation helpers
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{.pragma: noRaise, gcsafe, raises: [].}
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{.pragma: apiRaise, gcsafe, raises: [CoreDbApiError].}
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type
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CoreDbType* = enum
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Ooops
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LegacyDbMemory
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LegacyDbPersistent
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# AristoDbMemory
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# AristoDbPersistent
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const
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CoreDbPersistentTypes* = {LegacyDbPersistent}
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type
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CoreDbRc*[T] = Result[T,CoreDbError]
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CoreDbCaptFlags* {.pure.} = enum
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PersistPut
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PersistDel
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# --------------------------------------------------
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# Constructors
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# --------------------------------------------------
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CoreDbNewMptFn* =
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proc(root: Hash256): CoreDbRc[CoreDxMptRef] {.noRaise.}
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CoreDbNewLegaMptFn* =
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proc(root: Hash256; prune: bool): CoreDbRc[CoreDxMptRef] {.noRaise.}
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CoreDbNewTxGetIdFn* = proc(): CoreDbRc[CoreDxTxID] {.noRaise.}
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CoreDbNewTxBeginFn* = proc(): CoreDbRc[CoreDxTxRef] {.noRaise.}
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CoreDbNewCaptFn* =
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proc(flgs: set[CoreDbCaptFlags]): CoreDbRc[CoreDxCaptRef] {.noRaise.}
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CoreDbConstructorFns* = object
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## Constructors
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# Hexary trie
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mptFn*: CoreDbNewMptFn
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legacyMptFn*: CoreDbNewLegaMptFn # Legacy handler, should go away
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# Transactions
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getIdFn*: CoreDbNewTxGetIdFn
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beginFn*: CoreDbNewTxBeginFn
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# capture/tracer
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captureFn*: CoreDbNewCaptFn
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# --------------------------------------------------
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# Sub-descriptor: Misc methods for main descriptor
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# --------------------------------------------------
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CoreDbBackendFn* = proc(): CoreDbBackendRef {.noRaise.}
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CoreDbErrorPrintFn* = proc(e: CoreDbError): string {.noRaise.}
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CoreDbInitLegaSetupFn* = proc() {.noRaise.}
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CoreDbMiscFns* = object
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backendFn*: CoreDbBackendFn
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errorPrintFn*: CoreDbErrorPrintFn
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legacySetupFn*: CoreDbInitLegaSetupFn
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# --------------------------------------------------
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# Sub-descriptor: KVT methods
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# --------------------------------------------------
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CoreDbKvtBackendFn* = proc(): CoreDbKvtBackendRef {.noRaise.}
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CoreDbKvtGetFn* = proc(k: openArray[byte]): CoreDbRc[Blob] {.noRaise.}
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CoreDbKvtDelFn* = proc(k: openArray[byte]): CoreDbRc[void] {.noRaise.}
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CoreDbKvtPutFn* =
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proc(k: openArray[byte]; v: openArray[byte]): CoreDbRc[void] {.noRaise.}
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CoreDbKvtContainsFn* = proc(k: openArray[byte]): CoreDbRc[bool] {.noRaise.}
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CoreDbKvtPairsIt* = iterator(): (Blob,Blob) {.apiRaise.}
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CoreDbKvtFns* = object
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## Methods for key-value table
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backendFn*: CoreDbKvtBackendFn
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getFn*: CoreDbKvtGetFn
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delFn*: CoreDbKvtDelFn
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putFn*: CoreDbKvtPutFn
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containsFn*: CoreDbKvtContainsFn
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pairsIt*: CoreDbKvtPairsIt
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# --------------------------------------------------
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# Sub-descriptor: Mpt/hexary trie methods
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# --------------------------------------------------
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CoreDbMptBackendFn* = proc(): CoreDbMptBackendRef {.noRaise.}
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CoreDbMptGetFn* =
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proc(k: openArray[byte]): CoreDbRc[Blob] {.noRaise.}
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CoreDbMptDelFn* =
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proc(k: openArray[byte]): CoreDbRc[void] {.noRaise.}
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CoreDbMptPutFn* =
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proc(k: openArray[byte]; v: openArray[byte]): CoreDbRc[void ] {.noRaise.}
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CoreDbMptContainsFn* = proc(k: openArray[byte]): CoreDbRc[bool] {.noRaise.}
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CoreDbMptRootHashFn* = proc(): CoreDbRc[Hash256] {.noRaise.}
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CoreDbMptIsPruningFn* = proc(): bool {.noRaise.}
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CoreDbMptPairsIt* = iterator(): (Blob,Blob) {.apiRaise.}
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CoreDbMptReplicateIt* = iterator(): (Blob,Blob) {.apiRaise.}
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CoreDbMptFns* = object
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## Methods for trie objects
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backendFn*: CoreDbMptBackendFn
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getFn*: CoreDbMptGetFn
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delFn*: CoreDbMptDelFn
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putFn*: CoreDbMptPutFn
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containsFn*: CoreDbMptContainsFn
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rootHashFn*: CoreDbMptRootHashFn
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pairsIt*: CoreDbMptPairsIt
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replicateIt*: CoreDbMptReplicateIt
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isPruningFn*: CoreDbMptIsPruningFn # Legacy handler, should go away
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# --------------------------------------------------
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# Sub-descriptor: Transaction frame management
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# --------------------------------------------------
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CoreDbTxCommitFn* = proc(applyDeletes: bool): CoreDbRc[void] {.noRaise.}
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CoreDbTxRollbackFn* = proc(): CoreDbRc[void] {.noRaise.}
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CoreDbTxDisposeFn* = proc(): CoreDbRc[void] {.noRaise.}
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CoreDbTxSafeDisposeFn* = proc(): CoreDbRc[void] {.noRaise.}
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CoreDbTxFns* = object
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commitFn*: CoreDbTxCommitFn
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rollbackFn*: CoreDbTxRollbackFn
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disposeFn*: CoreDbTxDisposeFn
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safeDisposeFn*: CoreDbTxSafeDisposeFn
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# --------------------------------------------------
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# Sub-descriptor: Transaction ID management
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# --------------------------------------------------
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CoreDbTxIdSetIdFn* = proc(): CoreDbRc[void] {.noRaise.}
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CoreDbTxIdActionFn* = proc() {.noRaise.}
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CoreDbTxIdRoWrapperFn* =
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proc(action: CoreDbTxIdActionFn): CoreDbRc[void] {.noRaise.}
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CoreDbTxIdFns* = object
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roWrapperFn*: CoreDbTxIdRoWrapperFn
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# --------------------------------------------------
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# Sub-descriptor: capture recorder methods
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# --------------------------------------------------
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CoreDbCaptRecorderFn* = proc(): CoreDbRc[CoreDbRef] {.noRaise.}
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CoreDbCaptFlagsFn* = proc(): set[CoreDbCaptFlags] {.noRaise.}
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CoreDbCaptFns* = object
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recorderFn*: CoreDbCaptRecorderFn
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getFlagsFn*: CoreDbCaptFlagsFn
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# --------------------------------------------------
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# Production descriptors
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# --------------------------------------------------
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CoreDbRef* = ref object of RootRef
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## Database descriptor
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dbType*: CoreDbType
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kvtRef*: CoreDxKvtRef
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new*: CoreDbConstructorFns
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methods*: CoreDbMiscFns
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CoreDbError* = object of RootObj
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## Generic error object
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parent*: CoreDbRef
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CoreDbBackendRef* = ref object of RootRef
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## Backend wrapper for direct backend access
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parent*: CoreDbRef
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CoreDbKvtBackendRef* = ref object of RootRef
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## Backend wrapper for direct backend access
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parent*: CoreDbRef
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CoreDbMptBackendRef* = ref object of RootRef
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## Backend wrapper for direct backend access
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parent*: CoreDbRef
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CoreDxKvtRef* = ref object
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## Statically initialised Key-Value pair table living in `CoreDbRef`
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parent*: CoreDbRef
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methods*: CoreDbKvtFns
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CoreDxMptRef* = ref object
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## Hexary/Merkle-Patricia tree derived from `CoreDbRef`, will be
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## initialised on-the-fly.
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parent*: CoreDbRef
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methods*: CoreDbMptFns
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CoreDxPhkRef* = ref object
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## Similar to `CoreDbMptRef` but with pre-hashed keys. That is, any
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## argument key for `put()`, `get()` etc. will be hashed first before
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## being applied.
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fromMpt*: CoreDxMptRef
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methods*: CoreDbMptFns
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CoreDxTxRef* = ref object
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## Transaction descriptor derived from `CoreDbRef`
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parent*: CoreDbRef
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methods*: CoreDbTxFns
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CoreDxTxID* = ref object
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## Transaction ID descriptor derived from `CoreDbRef`
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parent*: CoreDbRef
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methods*: CoreDbTxIdFns
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CoreDxCaptRef* = ref object
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## Db transaction tracer derived from `CoreDbRef`
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parent*: CoreDbRef
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methods*: CoreDbCaptFns
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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