bool FindTx(const HashValue& hash, Tx *ptx) override {
EXT_LOCK (MtxSqlite) {
DbDataReader dr = m_cmdFindTx.Bind(1, ReducedHashValue(hash)).ExecuteReader();
if (!dr.Read())
return false;
if (ptx) {
ptx->EnsureCreate();
ptx->SetHash(hash);
LoadFromDb(*ptx, dr);
}
}
return true;
}
bool FindTxById(const ConstBuf& txid, Tx *ptx) override {
EXT_LOCK (MtxSqlite) {
DbDataReader dr = m_cmdFindTx.Bind(1, *(Int64*)txid.P).ExecuteReader();
if (!dr.Read())
return false;
if (ptx) {
ptx->EnsureCreate();
ptx->SetReducedHash(txid);
LoadFromDb(*ptx, dr);
}
}
return true;
}
DomainData Resolve(RCString domain) override {
if (!ResolverMode)
Throw(E_NOTIMPL);
DomainData r;
EXT_LOCK (MtxSqlite) {
DbDataReader dr = m_cmdFindDomain.Bind(1, domain).ExecuteReader();
if (dr.Read()) {
r.AddressData = dr.GetString(0);
r.Height = dr.GetInt32(1);
}
}
return r;
}
vector<Block> GetBlocks(const LocatorHashes& locators, const HashValue& hashStop) override {
vector<Block> r;
int idx = locators.FindIndexInMainChain();
EXT_LOCK (MtxSqlite) {
SqliteCommand cmd(EXT_STR("SELECT id, hash, data, txhashes FROM blocks WHERE id>" << idx << " ORDER BY id LIMIT " << 2000 + locators.DistanceBack), m_db);
for (DbDataReader dr = cmd.ExecuteReader(); dr.Read();) {
Block block = LoadBlock(dr);
r.push_back(block);
if (Hash(block) == hashStop)
break;
}
}
return r;
}
DbDataReader SqliteCommand::ExecuteVector() {
DbDataReader r = SqliteCommand::ExecuteReader();
if (!r.Read())
Throw(ExtErr::DB_NoRecord);
return r;
}
Blob FindPubkey(Int64 id) override {
EXT_LOCK (MtxSqlite) {
DbDataReader dr = CmdPubkeyIdToData.Bind(1, id).ExecuteReader();
return dr.Read() ? Blob(dr.GetBytes(0)) : Blob(nullptr);
}
}
Block FindBlock(const HashValue& hash) override {
EXT_LOCK (MtxSqlite) {
DbDataReader dr = m_cmdFindBlock.Bind(1, ReducedBlockHash(hash)).ExecuteReader();
return dr.Read() ? LoadBlock(dr) : Block(nullptr);
}
}
int GetNameHeight(const ConstBuf& cbufName, int heightExpired) override {
DbDataReader dr = m_cmdNameHeight.Bind(1, ToStringName(cbufName)).ExecuteReader();
return dr.Read() ? dr.GetInt32(0) : -1;
}