Bitcoin Core  27.99.0
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Public Member Functions | Private Member Functions | Private Attributes | List of all members
wallet::SQLiteBatch Class Reference

RAII class that provides access to a WalletDatabase. More...

#include <sqlite.h>

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Public Member Functions

 SQLiteBatch (SQLiteDatabase &database)
 
 ~SQLiteBatch () override
 
void SetExecHandler (std::unique_ptr< SQliteExecHandler > &&handler)
 
void Flush () override
 
void Close () override
 
std::unique_ptr< DatabaseCursorGetNewCursor () override
 
std::unique_ptr< DatabaseCursorGetNewPrefixCursor (Span< const std::byte > prefix) override
 
bool TxnBegin () override
 
bool TxnCommit () override
 
bool TxnAbort () override
 
- Public Member Functions inherited from wallet::DatabaseBatch
 DatabaseBatch ()
 
virtual ~DatabaseBatch ()
 
 DatabaseBatch (const DatabaseBatch &)=delete
 
DatabaseBatchoperator= (const DatabaseBatch &)=delete
 
template<typename K , typename T >
bool Read (const K &key, T &value)
 
template<typename K , typename T >
bool Write (const K &key, const T &value, bool fOverwrite=true)
 
template<typename K >
bool Erase (const K &key)
 
template<typename K >
bool Exists (const K &key)
 

Private Member Functions

void SetupSQLStatements ()
 
bool ExecStatement (sqlite3_stmt *stmt, Span< const std::byte > blob)
 
bool ReadKey (DataStream &&key, DataStream &value) override
 
bool WriteKey (DataStream &&key, DataStream &&value, bool overwrite=true) override
 
bool EraseKey (DataStream &&key) override
 
bool HasKey (DataStream &&key) override
 
bool ErasePrefix (Span< const std::byte > prefix) override
 

Private Attributes

SQLiteDatabasem_database
 
std::unique_ptr< SQliteExecHandlerm_exec_handler {std::make_unique<SQliteExecHandler>()}
 
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_delete_prefix_stmt {nullptr}
 
bool m_txn {false}
 Whether this batch has started a database transaction and whether it owns SQLiteDatabase::m_write_semaphore. More...
 

Detailed Description

RAII class that provides access to a WalletDatabase.

Definition at line 49 of file sqlite.h.

Constructor & Destructor Documentation

◆ SQLiteBatch()

wallet::SQLiteBatch::SQLiteBatch ( SQLiteDatabase database)
explicit

Definition at line 399 of file sqlite.cpp.

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◆ ~SQLiteBatch()

wallet::SQLiteBatch::~SQLiteBatch ( )
inlineoverride

Definition at line 84 of file sqlite.h.

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Member Function Documentation

◆ Close()

void wallet::SQLiteBatch::Close ( )
overridevirtual

Implements wallet::DatabaseBatch.

Definition at line 408 of file sqlite.cpp.

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◆ EraseKey()

bool wallet::SQLiteBatch::EraseKey ( DataStream &&  key)
overrideprivatevirtual

Implements wallet::DatabaseBatch.

Definition at line 540 of file sqlite.cpp.

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◆ ErasePrefix()

bool wallet::SQLiteBatch::ErasePrefix ( Span< const std::byte >  prefix)
overrideprivatevirtual

Implements wallet::DatabaseBatch.

Definition at line 545 of file sqlite.cpp.

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◆ ExecStatement()

bool wallet::SQLiteBatch::ExecStatement ( sqlite3_stmt *  stmt,
Span< const std::byte >  blob 
)
private

Definition at line 516 of file sqlite.cpp.

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◆ Flush()

void wallet::SQLiteBatch::Flush ( )
inlineoverridevirtual

Implements wallet::DatabaseBatch.

Definition at line 89 of file sqlite.h.

◆ GetNewCursor()

std::unique_ptr< DatabaseCursor > wallet::SQLiteBatch::GetNewCursor ( )
overridevirtual

Implements wallet::DatabaseBatch.

Definition at line 594 of file sqlite.cpp.

◆ GetNewPrefixCursor()

std::unique_ptr< DatabaseCursor > wallet::SQLiteBatch::GetNewPrefixCursor ( Span< const std::byte >  prefix)
overridevirtual

Implements wallet::DatabaseBatch.

Definition at line 609 of file sqlite.cpp.

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◆ HasKey()

bool wallet::SQLiteBatch::HasKey ( DataStream &&  key)
overrideprivatevirtual

Implements wallet::DatabaseBatch.

Definition at line 550 of file sqlite.cpp.

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◆ ReadKey()

bool wallet::SQLiteBatch::ReadKey ( DataStream &&  key,
DataStream value 
)
overrideprivatevirtual

Implements wallet::DatabaseBatch.

Definition at line 457 of file sqlite.cpp.

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◆ SetExecHandler()

void wallet::SQLiteBatch::SetExecHandler ( std::unique_ptr< SQliteExecHandler > &&  handler)
inline

Definition at line 86 of file sqlite.h.

◆ SetupSQLStatements()

void wallet::SQLiteBatch::SetupSQLStatements ( )
private

Definition at line 149 of file sqlite.cpp.

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◆ TxnAbort()

bool wallet::SQLiteBatch::TxnAbort ( )
overridevirtual

Implements wallet::DatabaseBatch.

Definition at line 680 of file sqlite.cpp.

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◆ TxnBegin()

bool wallet::SQLiteBatch::TxnBegin ( )
overridevirtual

Implements wallet::DatabaseBatch.

Definition at line 651 of file sqlite.cpp.

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◆ TxnCommit()

bool wallet::SQLiteBatch::TxnCommit ( )
overridevirtual

Implements wallet::DatabaseBatch.

Definition at line 666 of file sqlite.cpp.

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◆ WriteKey()

bool wallet::SQLiteBatch::WriteKey ( DataStream &&  key,
DataStream &&  value,
bool  overwrite = true 
)
overrideprivatevirtual

Implements wallet::DatabaseBatch.

Definition at line 483 of file sqlite.cpp.

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Member Data Documentation

◆ m_database

SQLiteDatabase& wallet::SQLiteBatch::m_database
private

Definition at line 52 of file sqlite.h.

◆ m_delete_prefix_stmt

sqlite3_stmt* wallet::SQLiteBatch::m_delete_prefix_stmt {nullptr}
private

Definition at line 59 of file sqlite.h.

◆ m_delete_stmt

sqlite3_stmt* wallet::SQLiteBatch::m_delete_stmt {nullptr}
private

Definition at line 58 of file sqlite.h.

◆ m_exec_handler

std::unique_ptr<SQliteExecHandler> wallet::SQLiteBatch::m_exec_handler {std::make_unique<SQliteExecHandler>()}
private

Definition at line 53 of file sqlite.h.

◆ m_insert_stmt

sqlite3_stmt* wallet::SQLiteBatch::m_insert_stmt {nullptr}
private

Definition at line 56 of file sqlite.h.

◆ m_overwrite_stmt

sqlite3_stmt* wallet::SQLiteBatch::m_overwrite_stmt {nullptr}
private

Definition at line 57 of file sqlite.h.

◆ m_read_stmt

sqlite3_stmt* wallet::SQLiteBatch::m_read_stmt {nullptr}
private

Definition at line 55 of file sqlite.h.

◆ m_txn

bool wallet::SQLiteBatch::m_txn {false}
private

Whether this batch has started a database transaction and whether it owns SQLiteDatabase::m_write_semaphore.

If the batch starts a db tx, it acquires the semaphore and sets this to true, keeping the semaphore until the transaction ends to prevent other batch objects from writing to the database.

If this batch did not start a transaction, the semaphore is acquired transiently when writing and m_txn is not set.

m_txn is different from HasActiveTxn() as it is only true when this batch has started the transaction, not just when any batch has started a transaction.

Definition at line 71 of file sqlite.h.


The documentation for this class was generated from the following files: