eve::statepatch::StoreTransactionParticipant类 参考

Transaction participant that atomically applies one StatePatch batch. 更多...

#include <StatePatch.h>

类 eve::statepatch::StoreTransactionParticipant 继承关系图:

Public 成员函数
	StoreTransactionParticipant (Store &store, PatchBatch &batch)
	Bind one patch batch to a Store transaction.
	~StoreTransactionParticipant () override=default
	Store transaction participant.
std::string_view	name () const noexcept override
	Stable participant name used in transaction diagnostics.
eve::Result< void >	prepare (const transaction::TransactionContext &context) override
	Validate and privately stage the batch.
eve::Result< void >	commit (const transaction::TransactionContext &context) override
	Publish the staged batch as one Store state swap.
eve::Result< void >	rollback (const transaction::TransactionContext &context) override
	Discard an unpublished candidate state.
eve::Result< void >	compensate (const transaction::TransactionContext &context) override
	Restore the state captured before this participant committed.
Public 成员函数 继承自 eve::transaction::ITransactionParticipant
virtual	~ITransactionParticipant ()=default
	Releases ITransactionParticipant resources.

详细描述

Transaction participant that atomically applies one StatePatch batch.

The participant owns neither store nor batch; both are borrowed and must remain alive and unchanged by other writers until the coordinator finishes. prepare validates against a private complete-state candidate, commit swaps that candidate into the store, rollback discards it, and compensate swaps the pre-commit state back after a later participant has failed. Compensation is not a rollback: it is an explicit undo of an effect that was already made observable.

This class is synchronous and not thread-safe. It must be used on the same thread as its Store, and must not be retained for a later frame or task.

在文件 StatePatch.h 第 230 行定义.

构造及析构函数说明

StoreTransactionParticipant()

eve::statepatch::StoreTransactionParticipant::StoreTransactionParticipant ( Store &  store, PatchBatch &  batch  )

inline

Bind one patch batch to a Store transaction.

参数

store	Borrowed authoritative Store to mutate on commit.
batch	Borrowed batch whose operations are staged and validated.

在文件 StatePatch.h 第 237 行定义.

~StoreTransactionParticipant()

eve::statepatch::StoreTransactionParticipant::~StoreTransactionParticipant ( )

overridedefault

Store transaction participant.

成员函数说明

commit()

eve::Result< void > eve::statepatch::StoreTransactionParticipant::commit ( const transaction::TransactionContext &  context )

overridevirtual

Publish the staged batch as one Store state swap.

实现了 eve::transaction::ITransactionParticipant.

在文件 StatePatch.cpp 第 606 行定义.

引用了 eve::Applied, eve::Conflict, context, eve::Diagnostic::error(), eve::Result< T >::failure(), eve::Status::success() , 以及 eve::Result< T >::success().

compensate()

eve::Result< void > eve::statepatch::StoreTransactionParticipant::compensate ( const transaction::TransactionContext &  context )

overridevirtual

Restore the state captured before this participant committed.

实现了 eve::transaction::ITransactionParticipant.

在文件 StatePatch.cpp 第 628 行定义.

引用了 eve::Applied, eve::Conflict, context, eve::Diagnostic::error(), eve::Result< T >::failure(), eve::Status::success() , 以及 eve::Result< T >::success().

name()

std::string_view eve::statepatch::StoreTransactionParticipant::name ( ) const

inlineoverridevirtualnoexcept

Stable participant name used in transaction diagnostics.

重载 eve::transaction::ITransactionParticipant .

在文件 StatePatch.h 第 242 行定义.

prepare()

eve::Result< void > eve::statepatch::StoreTransactionParticipant::prepare ( const transaction::TransactionContext &  context )

overridevirtual

Validate and privately stage the batch.

实现了 eve::transaction::ITransactionParticipant.

在文件 StatePatch.cpp 第 578 行定义.

引用了 context, eve::Diagnostic::error(), eve::Result< T >::failure(), eve::InvalidArgument , 以及 eve::Result< T >::success().

rollback()

eve::Result< void > eve::statepatch::StoreTransactionParticipant::rollback ( const transaction::TransactionContext &  context )

overridevirtual

Discard an unpublished candidate state.

实现了 eve::transaction::ITransactionParticipant.

在文件 StatePatch.cpp 第 618 行定义.

引用了 eve::Applied, context, eve::Status::success() , 以及 eve::Result< T >::success().

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该类的文档由以下文件生成:

• src/modules/statepatch/StatePatch.h
• src/modules/statepatch/StatePatch.cpp