wallet: Add DatabaseBatch::ErasePrefix method

This new function is not used yet this commit, but next commit adds usages and
test coverage for both BDB and sqlite.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/wallet/db.h b/src/wallet/db.h
index 2da94885be..6834ba6963 100644
--- a/src/wallet/db.h
+++ b/src/wallet/db.h
@@ -110,6 +110,7 @@ public:
 
         return HasKey(std::move(ssKey));
     }
+    virtual bool ErasePrefix(Span<const std::byte> prefix) = 0;
 
     virtual std::unique_ptr<DatabaseCursor> GetNewCursor() = 0;
     virtual bool TxnBegin() = 0;
@@ -186,6 +187,7 @@ private:
     bool WriteKey(DataStream&& key, DataStream&& value, bool overwrite = true) override { return true; }
     bool EraseKey(DataStream&& key) override { return true; }
     bool HasKey(DataStream&& key) override { return true; }
+    bool ErasePrefix(Span<const std::byte> prefix) override { return true; }
 
 public:
     void Flush() override {}