forked from lix-project/lix
Improve the SQLite wrapper API
In particular, this eliminates a bunch of boilerplate code.
This commit is contained in:
Eelco Dolstra
parent
d9c5e3bbf0
commit
3d119f0a3b
|
|
@ -332,6 +332,7 @@ void LocalStore::openDB(bool create)
|
|||
// ensure efficient lookup.
|
||||
stmtQueryPathFromHashPart.create(db,
|
||||
"select path from ValidPaths where path >= ? limit 1;");
|
||||
stmtQueryValidPaths.create(db, "select path from ValidPaths");
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -526,23 +527,16 @@ void LocalStore::checkDerivationOutputs(const Path & drvPath, const Derivation &
|
|||
}
|
||||
|
||||
|
||||
unsigned long long LocalStore::addValidPath(const ValidPathInfo & info, bool checkOutputs)
|
||||
uint64_t LocalStore::addValidPath(const ValidPathInfo & info, bool checkOutputs)
|
||||
{
|
||||
SQLiteStmtUse use(stmtRegisterValidPath);
|
||||
stmtRegisterValidPath.bind(info.path);
|
||||
stmtRegisterValidPath.bind("sha256:" + printHash(info.narHash));
|
||||
stmtRegisterValidPath.bind(info.registrationTime == 0 ? time(0) : info.registrationTime);
|
||||
if (info.deriver != "")
|
||||
stmtRegisterValidPath.bind(info.deriver);
|
||||
else
|
||||
stmtRegisterValidPath.bind(); // null
|
||||
if (info.narSize != 0)
|
||||
stmtRegisterValidPath.bind64(info.narSize);
|
||||
else
|
||||
stmtRegisterValidPath.bind(); // null
|
||||
if (sqlite3_step(stmtRegisterValidPath) != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("registering valid path ‘%1%’ in database") % info.path);
|
||||
unsigned long long id = sqlite3_last_insert_rowid(db);
|
||||
stmtRegisterValidPath.use()
|
||||
(info.path)
|
||||
("sha256:" + printHash(info.narHash))
|
||||
(info.registrationTime == 0 ? time(0) : info.registrationTime)
|
||||
(info.deriver, info.deriver != "")
|
||||
(info.narSize, info.narSize != 0)
|
||||
.exec();
|
||||
uint64_t id = sqlite3_last_insert_rowid(db);
|
||||
|
||||
/* If this is a derivation, then store the derivation outputs in
|
||||
the database. This is useful for the garbage collector: it can
|
||||
|
|
@ -559,12 +553,11 @@ unsigned long long LocalStore::addValidPath(const ValidPathInfo & info, bool che
|
|||
if (checkOutputs) checkDerivationOutputs(info.path, drv);
|
||||
|
||||
for (auto & i : drv.outputs) {
|
||||
SQLiteStmtUse use(stmtAddDerivationOutput);
|
||||
stmtAddDerivationOutput.bind(id);
|
||||
stmtAddDerivationOutput.bind(i.first);
|
||||
stmtAddDerivationOutput.bind(i.second.path);
|
||||
if (sqlite3_step(stmtAddDerivationOutput) != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("adding derivation output for ‘%1%’ in database") % info.path);
|
||||
stmtAddDerivationOutput.use()
|
||||
(id)
|
||||
(i.first)
|
||||
(i.second.path)
|
||||
.exec();
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -572,24 +565,16 @@ unsigned long long LocalStore::addValidPath(const ValidPathInfo & info, bool che
|
|||
}
|
||||
|
||||
|
||||
void LocalStore::addReference(unsigned long long referrer, unsigned long long reference)
|
||||
void LocalStore::addReference(uint64_t referrer, uint64_t reference)
|
||||
{
|
||||
SQLiteStmtUse use(stmtAddReference);
|
||||
stmtAddReference.bind(referrer);
|
||||
stmtAddReference.bind(reference);
|
||||
if (sqlite3_step(stmtAddReference) != SQLITE_DONE)
|
||||
throwSQLiteError(db, "adding reference to database");
|
||||
stmtAddReference.use()(referrer)(reference).exec();
|
||||
}
|
||||
|
||||
|
||||
void LocalStore::registerFailedPath(const Path & path)
|
||||
{
|
||||
retrySQLite<void>([&]() {
|
||||
SQLiteStmtUse use(stmtRegisterFailedPath);
|
||||
stmtRegisterFailedPath.bind(path);
|
||||
stmtRegisterFailedPath.bind(time(0));
|
||||
if (sqlite3_step(stmtRegisterFailedPath) != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("registering failed path ‘%1%’") % path);
|
||||
stmtRegisterFailedPath.use()(path)(time(0)).step();
|
||||
});
|
||||
}
|
||||
|
||||
|
|
@ -597,12 +582,7 @@ void LocalStore::registerFailedPath(const Path & path)
|
|||
bool LocalStore::hasPathFailed(const Path & path)
|
||||
{
|
||||
return retrySQLite<bool>([&]() {
|
||||
SQLiteStmtUse use(stmtHasPathFailed);
|
||||
stmtHasPathFailed.bind(path);
|
||||
int res = sqlite3_step(stmtHasPathFailed);
|
||||
if (res != SQLITE_DONE && res != SQLITE_ROW)
|
||||
throwSQLiteError(db, "querying whether path failed");
|
||||
return res == SQLITE_ROW;
|
||||
return stmtHasPathFailed.use()(path).next();
|
||||
});
|
||||
}
|
||||
|
||||
|
|
@ -610,18 +590,11 @@ bool LocalStore::hasPathFailed(const Path & path)
|
|||
PathSet LocalStore::queryFailedPaths()
|
||||
{
|
||||
return retrySQLite<PathSet>([&]() {
|
||||
SQLiteStmtUse use(stmtQueryFailedPaths);
|
||||
auto useQueryFailedPaths(stmtQueryFailedPaths.use());
|
||||
|
||||
PathSet res;
|
||||
int r;
|
||||
while ((r = sqlite3_step(stmtQueryFailedPaths)) == SQLITE_ROW) {
|
||||
const char * s = (const char *) sqlite3_column_text(stmtQueryFailedPaths, 0);
|
||||
assert(s);
|
||||
res.insert(s);
|
||||
}
|
||||
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(db, "error querying failed paths");
|
||||
while (useQueryFailedPaths.next())
|
||||
res.insert(useQueryFailedPaths.getStr(0));
|
||||
|
||||
return res;
|
||||
});
|
||||
|
|
@ -633,12 +606,8 @@ void LocalStore::clearFailedPaths(const PathSet & paths)
|
|||
retrySQLite<void>([&]() {
|
||||
SQLiteTxn txn(db);
|
||||
|
||||
for (auto & i : paths) {
|
||||
SQLiteStmtUse use(stmtClearFailedPath);
|
||||
stmtClearFailedPath.bind(i);
|
||||
if (sqlite3_step(stmtClearFailedPath) != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("clearing failed path ‘%1%’ in database") % i);
|
||||
}
|
||||
for (auto & path : paths)
|
||||
stmtClearFailedPath.use()(path).exec();
|
||||
|
||||
txn.commit();
|
||||
});
|
||||
|
|
@ -669,41 +638,28 @@ ValidPathInfo LocalStore::queryPathInfo(const Path & path)
|
|||
return retrySQLite<ValidPathInfo>([&]() {
|
||||
|
||||
/* Get the path info. */
|
||||
SQLiteStmtUse use1(stmtQueryPathInfo);
|
||||
auto useQueryPathInfo(stmtQueryPathInfo.use()(path));
|
||||
|
||||
stmtQueryPathInfo.bind(path);
|
||||
if (!useQueryPathInfo.next())
|
||||
throw Error(format("path ‘%1%’ is not valid") % path);
|
||||
|
||||
int r = sqlite3_step(stmtQueryPathInfo);
|
||||
if (r == SQLITE_DONE) throw Error(format("path ‘%1%’ is not valid") % path);
|
||||
if (r != SQLITE_ROW) throwSQLiteError(db, "querying path in database");
|
||||
info.id = useQueryPathInfo.getInt(0);
|
||||
|
||||
info.id = sqlite3_column_int(stmtQueryPathInfo, 0);
|
||||
info.narHash = parseHashField(path, useQueryPathInfo.getStr(1));
|
||||
|
||||
const char * s = (const char *) sqlite3_column_text(stmtQueryPathInfo, 1);
|
||||
assert(s);
|
||||
info.narHash = parseHashField(path, s);
|
||||
info.registrationTime = useQueryPathInfo.getInt(2);
|
||||
|
||||
info.registrationTime = sqlite3_column_int(stmtQueryPathInfo, 2);
|
||||
|
||||
s = (const char *) sqlite3_column_text(stmtQueryPathInfo, 3);
|
||||
auto s = (const char *) sqlite3_column_text(stmtQueryPathInfo, 3);
|
||||
if (s) info.deriver = s;
|
||||
|
||||
/* Note that narSize = NULL yields 0. */
|
||||
info.narSize = sqlite3_column_int64(stmtQueryPathInfo, 4);
|
||||
info.narSize = useQueryPathInfo.getInt(4);
|
||||
|
||||
/* Get the references. */
|
||||
SQLiteStmtUse use2(stmtQueryReferences);
|
||||
auto useQueryReferences(stmtQueryReferences.use()(info.id));
|
||||
|
||||
stmtQueryReferences.bind(info.id);
|
||||
|
||||
while ((r = sqlite3_step(stmtQueryReferences)) == SQLITE_ROW) {
|
||||
s = (const char *) sqlite3_column_text(stmtQueryReferences, 0);
|
||||
assert(s);
|
||||
info.references.insert(s);
|
||||
}
|
||||
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("error getting references of ‘%1%’") % path);
|
||||
while (useQueryReferences.next())
|
||||
info.references.insert(useQueryReferences.getStr(0));
|
||||
|
||||
return info;
|
||||
});
|
||||
|
|
@ -714,37 +670,26 @@ ValidPathInfo LocalStore::queryPathInfo(const Path & path)
|
|||
narSize field. */
|
||||
void LocalStore::updatePathInfo(const ValidPathInfo & info)
|
||||
{
|
||||
SQLiteStmtUse use(stmtUpdatePathInfo);
|
||||
if (info.narSize != 0)
|
||||
stmtUpdatePathInfo.bind64(info.narSize);
|
||||
else
|
||||
stmtUpdatePathInfo.bind(); // null
|
||||
stmtUpdatePathInfo.bind("sha256:" + printHash(info.narHash));
|
||||
stmtUpdatePathInfo.bind(info.path);
|
||||
if (sqlite3_step(stmtUpdatePathInfo) != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("updating info of path ‘%1%’ in database") % info.path);
|
||||
stmtUpdatePathInfo.use()
|
||||
(info.narSize, info.narSize != 0)
|
||||
("sha256:" + printHash(info.narHash))
|
||||
(info.path)
|
||||
.exec();
|
||||
}
|
||||
|
||||
|
||||
unsigned long long LocalStore::queryValidPathId(const Path & path)
|
||||
uint64_t LocalStore::queryValidPathId(const Path & path)
|
||||
{
|
||||
SQLiteStmtUse use(stmtQueryPathInfo);
|
||||
stmtQueryPathInfo.bind(path);
|
||||
int res = sqlite3_step(stmtQueryPathInfo);
|
||||
if (res == SQLITE_ROW) return sqlite3_column_int(stmtQueryPathInfo, 0);
|
||||
if (res == SQLITE_DONE) throw Error(format("path ‘%1%’ is not valid") % path);
|
||||
throwSQLiteError(db, "querying path in database");
|
||||
auto use(stmtQueryPathInfo.use()(path));
|
||||
if (!use.next())
|
||||
throw Error(format("path ‘%1%’ is not valid") % path);
|
||||
return use.getInt(0);
|
||||
}
|
||||
|
||||
|
||||
bool LocalStore::isValidPath_(const Path & path)
|
||||
{
|
||||
SQLiteStmtUse use(stmtQueryPathInfo);
|
||||
stmtQueryPathInfo.bind(path);
|
||||
int res = sqlite3_step(stmtQueryPathInfo);
|
||||
if (res != SQLITE_DONE && res != SQLITE_ROW)
|
||||
throwSQLiteError(db, "querying path in database");
|
||||
return res == SQLITE_ROW;
|
||||
return stmtQueryPathInfo.use()(path).next();
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -770,20 +715,9 @@ PathSet LocalStore::queryValidPaths(const PathSet & paths)
|
|||
PathSet LocalStore::queryAllValidPaths()
|
||||
{
|
||||
return retrySQLite<PathSet>([&]() {
|
||||
SQLiteStmt stmt;
|
||||
stmt.create(db, "select path from ValidPaths");
|
||||
|
||||
auto use(stmtQueryValidPaths.use());
|
||||
PathSet res;
|
||||
int r;
|
||||
while ((r = sqlite3_step(stmt)) == SQLITE_ROW) {
|
||||
const char * s = (const char *) sqlite3_column_text(stmt, 0);
|
||||
assert(s);
|
||||
res.insert(s);
|
||||
}
|
||||
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(db, "error getting valid paths");
|
||||
|
||||
while (use.next()) res.insert(use.getStr(0));
|
||||
return res;
|
||||
});
|
||||
}
|
||||
|
|
@ -791,19 +725,10 @@ PathSet LocalStore::queryAllValidPaths()
|
|||
|
||||
void LocalStore::queryReferrers_(const Path & path, PathSet & referrers)
|
||||
{
|
||||
SQLiteStmtUse use(stmtQueryReferrers);
|
||||
auto useQueryReferrers(stmtQueryReferrers.use()(path));
|
||||
|
||||
stmtQueryReferrers.bind(path);
|
||||
|
||||
int r;
|
||||
while ((r = sqlite3_step(stmtQueryReferrers)) == SQLITE_ROW) {
|
||||
const char * s = (const char *) sqlite3_column_text(stmtQueryReferrers, 0);
|
||||
assert(s);
|
||||
referrers.insert(s);
|
||||
}
|
||||
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("error getting references of ‘%1%’") % path);
|
||||
while (useQueryReferrers.next())
|
||||
referrers.insert(useQueryReferrers.getStr(0));
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -827,19 +752,11 @@ PathSet LocalStore::queryValidDerivers(const Path & path)
|
|||
assertStorePath(path);
|
||||
|
||||
return retrySQLite<PathSet>([&]() {
|
||||
SQLiteStmtUse use(stmtQueryValidDerivers);
|
||||
stmtQueryValidDerivers.bind(path);
|
||||
auto useQueryValidDerivers(stmtQueryValidDerivers.use()(path));
|
||||
|
||||
PathSet derivers;
|
||||
int r;
|
||||
while ((r = sqlite3_step(stmtQueryValidDerivers)) == SQLITE_ROW) {
|
||||
const char * s = (const char *) sqlite3_column_text(stmtQueryValidDerivers, 1);
|
||||
assert(s);
|
||||
derivers.insert(s);
|
||||
}
|
||||
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("error getting valid derivers of ‘%1%’") % path);
|
||||
while (useQueryValidDerivers.next())
|
||||
derivers.insert(useQueryValidDerivers.getStr(1));
|
||||
|
||||
return derivers;
|
||||
});
|
||||
|
|
@ -849,19 +766,11 @@ PathSet LocalStore::queryValidDerivers(const Path & path)
|
|||
PathSet LocalStore::queryDerivationOutputs(const Path & path)
|
||||
{
|
||||
return retrySQLite<PathSet>([&]() {
|
||||
SQLiteStmtUse use(stmtQueryDerivationOutputs);
|
||||
stmtQueryDerivationOutputs.bind(queryValidPathId(path));
|
||||
auto useQueryDerivationOutputs(stmtQueryDerivationOutputs.use()(queryValidPathId(path)));
|
||||
|
||||
PathSet outputs;
|
||||
int r;
|
||||
while ((r = sqlite3_step(stmtQueryDerivationOutputs)) == SQLITE_ROW) {
|
||||
const char * s = (const char *) sqlite3_column_text(stmtQueryDerivationOutputs, 1);
|
||||
assert(s);
|
||||
outputs.insert(s);
|
||||
}
|
||||
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("error getting outputs of ‘%1%’") % path);
|
||||
while (useQueryDerivationOutputs.next())
|
||||
outputs.insert(useQueryDerivationOutputs.getStr(1));
|
||||
|
||||
return outputs;
|
||||
});
|
||||
|
|
@ -871,19 +780,11 @@ PathSet LocalStore::queryDerivationOutputs(const Path & path)
|
|||
StringSet LocalStore::queryDerivationOutputNames(const Path & path)
|
||||
{
|
||||
return retrySQLite<StringSet>([&]() {
|
||||
SQLiteStmtUse use(stmtQueryDerivationOutputs);
|
||||
stmtQueryDerivationOutputs.bind(queryValidPathId(path));
|
||||
auto useQueryDerivationOutputs(stmtQueryDerivationOutputs.use()(queryValidPathId(path)));
|
||||
|
||||
StringSet outputNames;
|
||||
int r;
|
||||
while ((r = sqlite3_step(stmtQueryDerivationOutputs)) == SQLITE_ROW) {
|
||||
const char * s = (const char *) sqlite3_column_text(stmtQueryDerivationOutputs, 0);
|
||||
assert(s);
|
||||
outputNames.insert(s);
|
||||
}
|
||||
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("error getting output names of ‘%1%’") % path);
|
||||
while (useQueryDerivationOutputs.next())
|
||||
outputNames.insert(useQueryDerivationOutputs.getStr(0));
|
||||
|
||||
return outputNames;
|
||||
});
|
||||
|
|
@ -897,12 +798,9 @@ Path LocalStore::queryPathFromHashPart(const string & hashPart)
|
|||
Path prefix = settings.nixStore + "/" + hashPart;
|
||||
|
||||
return retrySQLite<Path>([&]() {
|
||||
SQLiteStmtUse use(stmtQueryPathFromHashPart);
|
||||
stmtQueryPathFromHashPart.bind(prefix);
|
||||
auto useQueryPathFromHashPart(stmtQueryPathFromHashPart.use()(prefix));
|
||||
|
||||
int res = sqlite3_step(stmtQueryPathFromHashPart);
|
||||
if (res == SQLITE_DONE) return "";
|
||||
if (res != SQLITE_ROW) throwSQLiteError(db, "finding path in database");
|
||||
if (!useQueryPathFromHashPart.next()) return "";
|
||||
|
||||
const char * s = (const char *) sqlite3_column_text(stmtQueryPathFromHashPart, 0);
|
||||
return s && prefix.compare(0, prefix.size(), s, prefix.size()) == 0 ? s : "";
|
||||
|
|
@ -1143,7 +1041,7 @@ void LocalStore::registerValidPaths(const ValidPathInfos & infos)
|
|||
}
|
||||
|
||||
for (auto & i : infos) {
|
||||
unsigned long long referrer = queryValidPathId(i.path);
|
||||
auto referrer = queryValidPathId(i.path);
|
||||
for (auto & j : i.references)
|
||||
addReference(referrer, queryValidPathId(j));
|
||||
}
|
||||
|
|
@ -1178,12 +1076,7 @@ void LocalStore::invalidatePath(const Path & path)
|
|||
|
||||
drvHashes.erase(path);
|
||||
|
||||
SQLiteStmtUse use(stmtInvalidatePath);
|
||||
|
||||
stmtInvalidatePath.bind(path);
|
||||
|
||||
if (sqlite3_step(stmtInvalidatePath) != SQLITE_DONE)
|
||||
throwSQLiteError(db, format("invalidating path ‘%1%’ in database") % path);
|
||||
stmtInvalidatePath.use()(path).exec();
|
||||
|
||||
/* Note that the foreign key constraints on the Refs table take
|
||||
care of deleting the references entries for `path'. */
|
||||
|
|
|
|||
|
|
@ -208,6 +208,7 @@ private:
|
|||
SQLiteStmt stmtQueryValidDerivers;
|
||||
SQLiteStmt stmtQueryDerivationOutputs;
|
||||
SQLiteStmt stmtQueryPathFromHashPart;
|
||||
SQLiteStmt stmtQueryValidPaths;
|
||||
|
||||
/* Cache for pathContentsGood(). */
|
||||
std::map<Path, bool> pathContentsGoodCache;
|
||||
|
|
@ -230,11 +231,11 @@ private:
|
|||
|
||||
void makeStoreWritable();
|
||||
|
||||
unsigned long long queryValidPathId(const Path & path);
|
||||
uint64_t queryValidPathId(const Path & path);
|
||||
|
||||
unsigned long long addValidPath(const ValidPathInfo & info, bool checkOutputs = true);
|
||||
uint64_t addValidPath(const ValidPathInfo & info, bool checkOutputs = true);
|
||||
|
||||
void addReference(unsigned long long referrer, unsigned long long reference);
|
||||
void addReference(uint64_t referrer, uint64_t reference);
|
||||
|
||||
void appendReferrer(const Path & from, const Path & to, bool lock);
|
||||
|
||||
|
|
|
|||
|
|
@ -53,15 +53,6 @@ void SQLiteStmt::create(sqlite3 * db, const string & s)
|
|||
this->db = db;
|
||||
}
|
||||
|
||||
void SQLiteStmt::reset()
|
||||
{
|
||||
assert(stmt);
|
||||
/* Note: sqlite3_reset() returns the error code for the most
|
||||
recent call to sqlite3_step(). So ignore it. */
|
||||
sqlite3_reset(stmt);
|
||||
curArg = 1;
|
||||
}
|
||||
|
||||
SQLiteStmt::~SQLiteStmt()
|
||||
{
|
||||
try {
|
||||
|
|
@ -72,43 +63,74 @@ SQLiteStmt::~SQLiteStmt()
|
|||
}
|
||||
}
|
||||
|
||||
void SQLiteStmt::bind(const string & value)
|
||||
{
|
||||
if (sqlite3_bind_text(stmt, curArg++, value.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
|
||||
throwSQLiteError(db, "binding argument");
|
||||
}
|
||||
|
||||
void SQLiteStmt::bind(int value)
|
||||
{
|
||||
if (sqlite3_bind_int(stmt, curArg++, value) != SQLITE_OK)
|
||||
throwSQLiteError(db, "binding argument");
|
||||
}
|
||||
|
||||
void SQLiteStmt::bind64(long long value)
|
||||
{
|
||||
if (sqlite3_bind_int64(stmt, curArg++, value) != SQLITE_OK)
|
||||
throwSQLiteError(db, "binding argument");
|
||||
}
|
||||
|
||||
void SQLiteStmt::bind()
|
||||
{
|
||||
if (sqlite3_bind_null(stmt, curArg++) != SQLITE_OK)
|
||||
throwSQLiteError(db, "binding argument");
|
||||
}
|
||||
|
||||
SQLiteStmtUse::SQLiteStmtUse(SQLiteStmt & stmt)
|
||||
SQLiteStmt::Use::Use(SQLiteStmt & stmt)
|
||||
: stmt(stmt)
|
||||
{
|
||||
stmt.reset();
|
||||
assert(stmt.stmt);
|
||||
/* Note: sqlite3_reset() returns the error code for the most
|
||||
recent call to sqlite3_step(). So ignore it. */
|
||||
sqlite3_reset(stmt);
|
||||
}
|
||||
|
||||
SQLiteStmtUse::~SQLiteStmtUse()
|
||||
SQLiteStmt::Use & SQLiteStmt::Use::operator () (const std::string & value, bool notNull)
|
||||
{
|
||||
try {
|
||||
stmt.reset();
|
||||
} catch (...) {
|
||||
ignoreException();
|
||||
}
|
||||
if (notNull) {
|
||||
if (sqlite3_bind_text(stmt, curArg++, value.c_str(), -1, SQLITE_TRANSIENT) != SQLITE_OK)
|
||||
throwSQLiteError(stmt.db, "binding argument");
|
||||
} else
|
||||
bind();
|
||||
return *this;
|
||||
}
|
||||
|
||||
SQLiteStmt::Use & SQLiteStmt::Use::operator () (int64_t value, bool notNull)
|
||||
{
|
||||
if (notNull) {
|
||||
if (sqlite3_bind_int64(stmt, curArg++, value) != SQLITE_OK)
|
||||
throwSQLiteError(stmt.db, "binding argument");
|
||||
} else
|
||||
bind();
|
||||
return *this;
|
||||
}
|
||||
|
||||
SQLiteStmt::Use & SQLiteStmt::Use::bind()
|
||||
{
|
||||
if (sqlite3_bind_null(stmt, curArg++) != SQLITE_OK)
|
||||
throwSQLiteError(stmt.db, "binding argument");
|
||||
return *this;
|
||||
}
|
||||
|
||||
int SQLiteStmt::Use::step()
|
||||
{
|
||||
return sqlite3_step(stmt);
|
||||
}
|
||||
|
||||
void SQLiteStmt::Use::exec()
|
||||
{
|
||||
int r = step();
|
||||
assert(r != SQLITE_ROW);
|
||||
if (r != SQLITE_DONE)
|
||||
throwSQLiteError(stmt.db, "executing SQLite statement");
|
||||
}
|
||||
|
||||
bool SQLiteStmt::Use::next()
|
||||
{
|
||||
int r = step();
|
||||
if (r != SQLITE_DONE && r != SQLITE_ROW)
|
||||
throwSQLiteError(stmt.db, "executing SQLite query");
|
||||
return r == SQLITE_ROW;
|
||||
}
|
||||
|
||||
std::string SQLiteStmt::Use::getStr(int col)
|
||||
{
|
||||
auto s = (const char *) sqlite3_column_text(stmt, col);
|
||||
assert(s);
|
||||
return s;
|
||||
}
|
||||
|
||||
int64_t SQLiteStmt::Use::getInt(int col)
|
||||
{
|
||||
// FIXME: detect nulls?
|
||||
return sqlite3_column_int64(stmt, col);
|
||||
}
|
||||
|
||||
SQLiteTxn::SQLiteTxn(sqlite3 * db)
|
||||
|
|
|
|||
|
|
@ -22,29 +22,46 @@ struct SQLite
|
|||
/* RAII wrapper to create and destroy SQLite prepared statements. */
|
||||
struct SQLiteStmt
|
||||
{
|
||||
sqlite3 * db;
|
||||
sqlite3_stmt * stmt;
|
||||
unsigned int curArg;
|
||||
SQLiteStmt() { stmt = 0; }
|
||||
sqlite3 * db = 0;
|
||||
sqlite3_stmt * stmt = 0;
|
||||
SQLiteStmt() { }
|
||||
void create(sqlite3 * db, const std::string & s);
|
||||
void reset();
|
||||
~SQLiteStmt();
|
||||
operator sqlite3_stmt * () { return stmt; }
|
||||
void bind(const std::string & value);
|
||||
void bind(int value);
|
||||
void bind64(long long value);
|
||||
void bind();
|
||||
};
|
||||
|
||||
/* Helper class to ensure that prepared statements are reset when
|
||||
leaving the scope that uses them. Unfinished prepared statements
|
||||
prevent transactions from being aborted, and can cause locks to be
|
||||
kept when they should be released. */
|
||||
struct SQLiteStmtUse
|
||||
{
|
||||
/* Helper for binding / executing statements. */
|
||||
class Use
|
||||
{
|
||||
friend struct SQLiteStmt;
|
||||
private:
|
||||
SQLiteStmt & stmt;
|
||||
SQLiteStmtUse(SQLiteStmt & stmt);
|
||||
~SQLiteStmtUse();
|
||||
unsigned int curArg = 1;
|
||||
Use(SQLiteStmt & stmt);
|
||||
|
||||
public:
|
||||
|
||||
/* Bind the next parameter. */
|
||||
Use & operator () (const std::string & value, bool notNull = true);
|
||||
Use & operator () (int64_t value, bool notNull = true);
|
||||
Use & bind(); // null
|
||||
|
||||
int step();
|
||||
|
||||
/* Execute a statement that does not return rows. */
|
||||
void exec();
|
||||
|
||||
/* For statements that return 0 or more rows. Returns true iff
|
||||
a row is available. */
|
||||
bool next();
|
||||
|
||||
std::string getStr(int col);
|
||||
int64_t getInt(int col);
|
||||
};
|
||||
|
||||
Use use()
|
||||
{
|
||||
return Use(*this);
|
||||
}
|
||||
};
|
||||
|
||||
/* RAII helper that ensures transactions are aborted unless explicitly
|
||||
|
|
|
|||
|
|
@ -96,8 +96,8 @@ struct ValidPathInfo
|
|||
Hash narHash;
|
||||
PathSet references;
|
||||
time_t registrationTime = 0;
|
||||
unsigned long long narSize = 0; // 0 = unknown
|
||||
unsigned long long id; // internal use only
|
||||
uint64_t narSize = 0; // 0 = unknown
|
||||
uint64_t id; // internal use only
|
||||
|
||||
/* Whether the path is ultimately trusted, that is, it was built
|
||||
locally or is content-addressable (e.g. added via addToStore()
|
||||
|
|
|
|||
Loading…
Reference in a new issue