Andrew Chow 5325a61167
Merge bitcoin/bitcoin#27224: refactor: Remove CAddressBookData::destdata
a5986e82dd2b8f923d60f9e31760ef62b9010105 refactor: Remove CAddressBookData::destdata (Ryan Ofsky)
5938ad0bdb013953861c7cd15a95f00998a06f44 wallet: Add DatabaseBatch::ErasePrefix method (Ryan Ofsky)

Pull request description:

  This is cleanup that doesn't change external behavior. Benefits of the cleanup are:

  - Removes awkward `StringMap` intermediate representation for wallet address metadata.
  - Simplifies `CWallet`, deals with used address and received request serialization in `walletdb.cpp` instead of higher level wallet code
  - Adds test coverage and documentation

  This PR doesn't change externally observable behavior. Internally, the only change in behavior is that `EraseDestData` deletes rows directly from the database because they are no longer stored in memory. This is more direct and efficient because it uses a single lookup and scan instead of multiple lookups.

  Motivation for this cleanup is making changes like #18550, #18192, #13756 easier to reason about and less likely to result in unintended behavior and bugs

  ---

  This PR is a rebased copy of #18608. For some reason that PR is locked and couldn't be reopened or commented on.

  This PR is an alternative to #27215 with differences described in https://github.com/bitcoin/bitcoin/pull/27215#pullrequestreview-1329028143

ACKs for top commit:
  achow101:
    ACK a5986e82dd2b8f923d60f9e31760ef62b9010105
  furszy:
    Code ACK a5986e82

Tree-SHA512: 6bd3e402f1f60263fbd433760bdc29d04175ddaf8307207c4a67d59f6cffa732e176ba57886e02926f7a1615dce0ed9cda36c8cbc6430aa8e5b56934c23f3fe7
2023-05-01 08:16:54 -04:00
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2023-03-23 12:55:18 +01:00