LedgerHeaderFrame::pointer
LedgerHeaderFrame::loadByHash(Hash const& hash, Database& db)
{
LedgerHeaderFrame::pointer lhf;
string hash_s(binToHex(hash));
string headerEncoded;
auto prep = db.getPreparedStatement("SELECT data FROM ledgerheaders "
"WHERE ledgerhash = :h");
auto& st = prep.statement();
st.exchange(into(headerEncoded));
st.exchange(use(hash_s));
st.define_and_bind();
{
auto timer = db.getSelectTimer("ledger-header");
st.execute(true);
}
if (st.got_data())
{
lhf = decodeFromData(headerEncoded);
if (lhf->getHash() != hash)
{
// wrong hash
lhf.reset();
}
}
return lhf;
}
LedgerHeaderFrame::pointer
LedgerHeaderFrame::loadBySequence(uint32_t seq, Database& db,
soci::session& sess)
{
LedgerHeaderFrame::pointer lhf;
string headerEncoded;
{
auto timer = db.getSelectTimer("ledger-header");
sess << "SELECT data FROM ledgerheaders "
"WHERE ledgerseq = :s",
into(headerEncoded), use(seq);
}
if (sess.got_data())
{
lhf = decodeFromData(headerEncoded);
if (lhf->mHeader.ledgerSeq != seq)
{
// wrong sequence number
lhf.reset();
}
}
return lhf;
}
