b82f0ca4d5465b36debb6c57f335bdccf4899c49 walletdb: Add MakeBatch function to BerkeleyDatabase and use it (Andrew Chow)
eac9200814fa01da6522625be01dded730b26751 walletdb: Refactor DatabaseBatch abstract class from BerkeleyBatch (Andrew Chow)
Pull request description:
In order to support alternative database systems, we need to have a generic `Batch` class. This PR adds a `DatabaseBatch` abstract class which is implemented by `BerkeleyBatch`. `DatabaseBatch` is now the class that is used by `WalletBatch` to interact with the database. To be able to get the correct type of `DatabaseBatch`, `BerkeleyDatabase` now has a `MakeBatch` function which returns a newly constructed `std::unique_ptr<DatabaseBatch>`. For `BerkeleyDatabase`, that will be `std::unique_ptr<BerkeleyBatch>`.
The `Read`, `Write`, `Erase`, and `Exists` template functions are moved from `BerkeleyBatch`.
Part of #18971
Requires #19308 and #19324
ACKs for top commit:
Sjors:
re-utACK b82f0ca4d5465b36debb6c57f335bdccf4899c49
MarcoFalke:
ACK b82f0ca4d5465b36debb6c57f335bdccf4899c49 🌘
meshcollider:
LGTM, utACK b82f0ca4d5465b36debb6c57f335bdccf4899c49
Tree-SHA512: 6d2d41631c0983391dbecd702e881c6775b155c90b275df97f7157e42608ed251744f9d7ce5173d02a6c5cc38d90b611880fac7fa635d3d8c4d590681f56ac6a
a924f61cae