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Add SetupSQLStatements

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This commit is contained in:
Andrew Chow 2020-05-26 20:53:41 -04:00
parent 6636a2608a
commit 7aa45620e2
2 changed files with 67 additions and 0 deletions
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59
src/wallet/sqlite.cpp
View file

@ -61,6 +61,36 @@ SQLiteDatabase::SQLiteDatabase(const fs::path& dir_path, const fs::path& file_pa
}
}
void SQLiteBatch::SetupSQLStatements()
{
int res;
if (!m_read_stmt) {
if ((res = sqlite3_prepare_v2(m_database.m_db, "SELECT value FROM main WHERE key = ?", -1, &m_read_stmt, nullptr)) != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to setup SQL statements: %s\n", sqlite3_errstr(res)));
}
}
if (!m_insert_stmt) {
if ((res = sqlite3_prepare_v2(m_database.m_db, "INSERT INTO main VALUES(?, ?)", -1, &m_insert_stmt, nullptr)) != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to setup SQL statements: %s\n", sqlite3_errstr(res)));
}
}
if (!m_overwrite_stmt) {
if ((res = sqlite3_prepare_v2(m_database.m_db, "INSERT or REPLACE into main values(?, ?)", -1, &m_overwrite_stmt, nullptr)) != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to setup SQL statements: %s\n", sqlite3_errstr(res)));
}
}
if (!m_delete_stmt) {
if ((res = sqlite3_prepare_v2(m_database.m_db, "DELETE FROM main WHERE key = ?", -1, &m_delete_stmt, nullptr)) != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to setup SQL statements: %s\n", sqlite3_errstr(res)));
}
}
if (!m_cursor_stmt) {
if ((res = sqlite3_prepare_v2(m_database.m_db, "SELECT key, value FROM main", -1, &m_cursor_stmt, nullptr)) != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to setup SQL statements : %s\n", sqlite3_errstr(res)));
}
}
}
SQLiteDatabase::~SQLiteDatabase()
{
Cleanup();
@ -178,6 +208,8 @@ SQLiteBatch::SQLiteBatch(SQLiteDatabase& database)
{
// Make sure we have a db handle
assert(m_database.m_db);
SetupSQLStatements();
}
void SQLiteBatch::Close()
@ -190,6 +222,33 @@ void SQLiteBatch::Close()
LogPrintf("SQLiteBatch: Batch closed and failed to abort transaction\n");
}
}
// Free all of the prepared statements
int ret = sqlite3_finalize(m_read_stmt);
if (ret != SQLITE_OK) {
LogPrintf("SQLiteBatch: Batch closed but could not finalize read statement: %s\n", sqlite3_errstr(ret));
}
ret = sqlite3_finalize(m_insert_stmt);
if (ret != SQLITE_OK) {
LogPrintf("SQLiteBatch: Batch closed but could not finalize insert statement: %s\n", sqlite3_errstr(ret));
}
ret = sqlite3_finalize(m_overwrite_stmt);
if (ret != SQLITE_OK) {
LogPrintf("SQLiteBatch: Batch closed but could not finalize overwrite statement: %s\n", sqlite3_errstr(ret));
}
ret = sqlite3_finalize(m_delete_stmt);
if (ret != SQLITE_OK) {
LogPrintf("SQLiteBatch: Batch closed but could not finalize delete statement: %s\n", sqlite3_errstr(ret));
}
ret = sqlite3_finalize(m_cursor_stmt);
if (ret != SQLITE_OK) {
LogPrintf("SQLiteBatch: Batch closed but could not finalize cursor statement: %s\n", sqlite3_errstr(ret));
}
m_read_stmt = nullptr;
m_insert_stmt = nullptr;
m_overwrite_stmt = nullptr;
m_delete_stmt = nullptr;
m_cursor_stmt = nullptr;
}
bool SQLiteBatch::ReadKey(CDataStream&& key, CDataStream& value)

8
src/wallet/sqlite.h
View file

@ -18,6 +18,14 @@ class SQLiteBatch : public DatabaseBatch
private:
SQLiteDatabase& m_database;
sqlite3_stmt* m_read_stmt{nullptr};
sqlite3_stmt* m_insert_stmt{nullptr};
sqlite3_stmt* m_overwrite_stmt{nullptr};
sqlite3_stmt* m_delete_stmt{nullptr};
sqlite3_stmt* m_cursor_stmt{nullptr};
void SetupSQLStatements();
bool ReadKey(CDataStream&& key, CDataStream& value) override;
bool WriteKey(CDataStream&& key, CDataStream&& value, bool overwrite = true) override;
bool EraseKey(CDataStream&& key) override;