Indexer Readme

Transaction Indexer

txIndexer implementation uses a KVStore (interface) to index the transactions.

Index Types

Key	Index	Value	Description
HASHKEY	h/SHA3(TransactionProtoBytes)	IndexedTransactionProtoBytes	store value by hash (the key here is equivalent to the VALs below)
HEIGHTKEY	b/height/txIndex	HASHKEY	store hashKey by height
SENDERKEY	s/senderAddr	HASHKEY	store hashKey by sender
RECIPIENTKEY	r/recipientAddr	HASHKEY	store hashKey by recipient (if not empty)

ELEN Index

The height/txIndex store uses ELEN. This is to ensure the results are stored sorted (assuming the KVStore uses a byte-wise lexicographical sorting).