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big refactoring part 1

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This commit is contained in:
Blue 2023-03-20 18:37:13 +03:00
parent 6a8f67ac34
commit 19229f6c26
Signed by: blue
GPG key ID: 9B203B252A63EE38
28 changed files with 867 additions and 795 deletions
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151
database.cpp
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@ -16,30 +16,30 @@
#include "database.h"
#include "exceptions.h"
#include "table.h"
#include "storage.h"
DataBase::DataBase(const QString& p_name, uint16_t mapSize):
LMDBDataBase::DataBase::DataBase(const QString& p_name, uint16_t mapSize):
name(p_name.toStdString()),
opened(false),
size(mapSize),
environment(),
tables()
{
}
tables(),
transactions(new Transactions())
{}
DataBase::~DataBase()
{
LMDBDataBase::DataBase::~DataBase() {
close();
for (const std::pair<const std::string, _Table*>& pair : tables) {
delete transactions;
for (const std::pair<const std::string, StorageBase*>& pair : tables)
delete pair.second;
}
}
void DataBase::close()
{
void LMDBDataBase::DataBase::close() {
if (opened) {
for (const std::pair<const std::string, _Table*>& pair : tables) {
_Table* table = pair.second;
for (const std::pair<const std::string, StorageBase*>& pair : tables) {
StorageBase* table = pair.second;
mdb_dbi_close(environment, table->dbi);
}
mdb_env_close(environment);
@ -47,8 +47,7 @@ void DataBase::close()
}
}
void DataBase::open()
{
void LMDBDataBase::DataBase::open() {
if (!opened) {
mdb_env_create(&environment);
QString path = createDirectory();
@ -60,40 +59,34 @@ void DataBase::open()
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
for (const std::pair<const std::string, _Table*>& pair : tables) {
_Table* table = pair.second;
for (const std::pair<const std::string, StorageBase*>& pair : tables) {
StorageBase* table = pair.second;
int rc = table->createTable(txn);
if (rc) {
if (rc)
throw Unknown(name, mdb_strerror(rc));
}
}
mdb_txn_commit(txn);
opened = true;
}
}
bool DataBase::removeDirectory()
{
if (opened) {
bool LMDBDataBase::DataBase::removeDirectory() {
if (opened)
throw Opened(name, "remove database directory");
}
QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
path += "/" + getName();
QDir cache(path);
if (cache.exists()) {
if (cache.exists())
return cache.removeRecursively();
} else {
else
return true;
}
}
QString DataBase::createDirectory()
{
if (opened) {
QString LMDBDataBase::DataBase::createDirectory() {
if (opened)
throw Opened(name, "create database directory");
}
QString path(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
path += "/" + getName();
@ -101,44 +94,100 @@ QString DataBase::createDirectory()
if (!cache.exists()) {
bool res = cache.mkpath(path);
if (!res) {
if (!res)
throw Directory(path.toStdString());
}
}
return path;
}
QString LMDBDataBase::DataBase::getName() const {
return QString::fromStdString(name);}
QString DataBase::getName() const
{
return QString::fromStdString(name);
}
bool LMDBDataBase::DataBase::ready() const {
return opened;}
bool DataBase::ready() const
{
return opened;
}
void DataBase::drop()
{
if (!opened) {
void LMDBDataBase::DataBase::drop() {
if (!opened)
throw Closed("drop", name);
}
MDB_txn *txn;
int rc = mdb_txn_begin(environment, NULL, 0, &txn);
if (rc) {
if (rc)
throw Unknown(name, mdb_strerror(rc));
}
for (const std::pair<const std::string, _Table*>& pair : tables) {
for (const std::pair<const std::string, StorageBase*>& pair : tables) {
rc = pair.second->drop(txn);
if (rc) {
if (rc)
throw Unknown(name, mdb_strerror(rc), pair.first);
}
}
mdb_txn_commit(txn);
}
LMDBDataBase::TransactionID LMDBDataBase::DataBase::beginReadOnlyTransaction() const {
return beginReadOnlyTransaction(emptyName);}
LMDBDataBase::TransactionID LMDBDataBase::DataBase::beginTransaction() const {
return beginTransaction(emptyName);}
void LMDBDataBase::DataBase::abortTransaction(LMDBDataBase::TransactionID id) const {
return abortTransaction(id, emptyName);}
void LMDBDataBase::DataBase::commitTransaction(LMDBDataBase::TransactionID id) const {
return commitTransaction(id, emptyName);}
LMDBDataBase::TransactionID LMDBDataBase::DataBase::beginReadOnlyTransaction(const std::string& storageName) const {
if (!opened)
throw Closed("beginReadOnlyTransaction", name, storageName);
MDB_txn* txn;
int rc = mdb_txn_begin(environment, NULL, MDB_RDONLY, &txn);
if (rc) {
mdb_txn_abort(txn);
throw Unknown(name, mdb_strerror(rc), storageName);
}
transactions->emplace(txn);
return txn;
}
LMDBDataBase::TransactionID LMDBDataBase::DataBase::beginTransaction(const std::string& storageName) const {
if (!opened)
throw Closed("beginTransaction", name, storageName);
MDB_txn* txn;
int rc = mdb_txn_begin(environment, NULL, 0, &txn);
if (rc) {
mdb_txn_abort(txn);
throw Unknown(name, mdb_strerror(rc), storageName);
}
transactions->emplace(txn);
return txn;
}
void LMDBDataBase::DataBase::abortTransaction(LMDBDataBase::TransactionID id, const std::string& storageName) const {
if (!opened)
throw Closed("abortTransaction", name, storageName);
Transactions::iterator itr = transactions->find(id);
if (itr == transactions->end()) //TODO may be it's a good idea to make an exception class for this
throw Unknown(name, "unable to abort transaction: transaction was not found", storageName);
mdb_txn_abort(id);
transactions->erase(itr);
}
void LMDBDataBase::DataBase::commitTransaction(LMDBDataBase::TransactionID id, const std::string& storageName) const {
if (!opened)
throw Closed("abortTransaction", name, storageName);
Transactions::iterator itr = transactions->find(id);
if (itr == transactions->end()) //TODO may be it's a good idea to make an exception class for this
throw Unknown(name, "unable to commit transaction: transaction was not found", storageName);
int rc = mdb_txn_commit(id);
transactions->erase(itr);
if (rc != MDB_SUCCESS)
throw Unknown(name, mdb_strerror(rc), storageName);
}