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-rw-r--r--src/blockchain_db/blockchain_db.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/blockchain_db/blockchain_db.h b/src/blockchain_db/blockchain_db.h
index 85144f04c..152f29b38 100644
--- a/src/blockchain_db/blockchain_db.h
+++ b/src/blockchain_db/blockchain_db.h
@@ -464,6 +464,9 @@ public:
// returns the total number of outputs of amount <amount>
virtual uint64_t get_num_outputs(const uint64_t& amount) const = 0;
+ // return index of the first element (should be hidden, but isn't)
+ virtual uint64_t get_indexing_base() const { return 0; }
+
// return public key for output with global output amount <amount> and index <index>
virtual output_data_t get_output_key(const uint64_t& amount, const uint64_t& index) = 0;
virtual output_data_t get_output_key(const uint64_t& global_index) const = 0;