use of com.jd.blockchain.ledger.TypedKVData in project jdchain-core by blockchain-jd-com.
the class LedgerQueryController method getDataEntries.
@RequestMapping(method = { RequestMethod.GET, RequestMethod.POST }, path = GET_LATEST_KV_SEQUENCE)
@Override
public TypedKVEntry[] getDataEntries(@PathVariable(name = "ledgerHash") HashDigest ledgerHash, @PathVariable(name = "address") String address, @RequestParam(name = "fromIndex", required = false, defaultValue = "0") int fromIndex, @RequestParam(name = "count", required = false, defaultValue = "-1") int count) {
LedgerQuery ledger = ledgerService.getLedger(ledgerHash);
LedgerBlock block = ledger.getLatestBlock();
DataAccountSet dataAccountSet = ledger.getDataAccountSet(block);
DataAccount dataAccount = dataAccountSet.getAccount(Bytes.fromBase58(address));
if (dataAccount == null) {
return null;
}
QueryArgs queryArgs = QueryUtils.calFromIndexAndCount(fromIndex, count, (int) dataAccount.getDataset().getDataCount());
fromIndex = queryArgs.getFrom();
count = queryArgs.getCount();
SkippingIterator<DataEntry<String, TypedValue>> iterator = ((IteratorDataset) dataAccount.getDataset()).kvIterator();
iterator.skip(fromIndex);
TypedKVEntry[] typedKVEntries = iterator.next(count, TypedKVEntry.class, new Mapper<DataEntry<String, TypedValue>, TypedKVEntry>() {
@Override
public TypedKVEntry from(DataEntry<String, TypedValue> entry) {
return entry == null ? null : new TypedKVData(entry.getKey(), entry.getVersion(), entry.getValue());
}
});
return typedKVEntries;
}
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