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C++ MojDbReq::txn方法代码示例

本文整理汇总了C++中MojDbReq::txn方法的典型用法代码示例。如果您正苦于以下问题：C++ MojDbReq::txn方法的具体用法？C++ MojDbReq::txn怎么用？C++ MojDbReq::txn使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MojDbReq的用法示例。


在下文中一共展示了MojDbReq::txn方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: delObj

MojErr MojDb::delObj(const MojObject& id, const MojObject& obj, MojDbStorageItem* item, MojObject& foundObjOut, MojDbReq& req, MojUInt32 flags)
{
	MojAssert(item);
	MojLogTrace(s_log);

	if (MojFlagGet(flags, FlagPurge)) {
		// update indexes
		MojTokenSet tokenSet;
		// we want purge to force delete
		req.fixmode(true);
		MojErr err = m_kindEngine.update(NULL, &obj, req, OpDelete, tokenSet);
		MojErrCheck(err);
		// gross layering violation
		err = req.txn()->offsetQuota(-(MojInt64) item->size());
		MojErrCheck(err);
		// permanently delete
		bool found = false;
		err = m_objDb->del(id, req.txn(), found);
		MojErrCheck(err);
		if (!found)
			MojErrThrow(MojErrDbCorruptDatabase);
		err = foundObjOut.put(IdKey, id);
		MojErrCheck(err);
	} else {
		// set deleted flag and put if we are not purging
		MojObject newObj = obj;
		MojErr err = newObj.putBool(DelKey, true);
		MojErrCheck(err);
		err = putObj(id, newObj, &obj, item, req, OpDelete);
		MojErrCheck(err);
		foundObjOut = newObj;
	}
	return MojErrNone;
}
开发者ID:KyleMaas，项目名称:db8，代码行数:34，代码来源:MojDb.cpp

示例2: find

MojErr MojDbIndex::find(MojDbCursor& cursor, MojDbWatcher* watcher, MojDbReq& req)
{
    LOG_TRACE("Entering function %s", __FUNCTION__);
	MojAssert(isOpen());

	MojAutoPtr<MojDbQueryPlan> plan(new MojDbQueryPlan(*m_kindEngine));
	MojAllocCheck(plan.get());
	MojErr err = plan->init(cursor.query(), *this);
	MojErrCheck(err);
	if (watcher) {
		// we have to add the watch before beginning the txn or we may miss events
		MojAssert(cursor.txn() == NULL);
		err = addWatch(*plan, cursor, watcher, req);
		MojErrCheck(err);
	}
	if (!cursor.txn()) {
		MojDbStorageTxn* txn = req.txn();
		bool cursorOwnsTxn = !(req.batch() || txn);
		if (txn) {
			cursor.txn(txn, cursorOwnsTxn);
		} else {
			MojRefCountedPtr<MojDbStorageTxn> localTxn;
			err = m_collection->beginTxn(localTxn);
			MojErrCheck(err);
			cursor.txn(localTxn.get(), cursorOwnsTxn);
			req.txn(localTxn.get());
		}
	}
	cursor.m_dbIndex = this;	// for debugging
	err = m_collection->find(plan, cursor.txn(), cursor.m_storageQuery);
	MojErrCheck(err);
	cursor.m_watcher = watcher;
	
	return MojErrNone;
}
开发者ID:sailesharya，项目名称:db8，代码行数:35，代码来源:MojDbIndex.cpp

示例3: stats

MojErr MojDbIndex::stats(MojObject& objOut, MojSize& usageOut, MojDbReq& req)
{
    LOG_TRACE("Entering function %s", __FUNCTION__);
	MojAssert(isOpen());
	
	MojSize count = 0;
	MojSize size = 0;
	MojErr err = m_index->stats(req.txn(), count, size);

    LOG_DEBUG("[db_mojodb] IndexStats: Kind: %s;Index: %s; Id: %zX; count= %zu; size= %zu; delMisses = %d, err= %d \n",
        m_kind->name().data(), m_name.data(), idIndex(), count, size, m_delMisses, err);

	MojErrCheck(err);
	usageOut += size;

	err = objOut.put(SizeKey, (MojInt64) size);
	MojErrCheck(err);
	err = objOut.put(CountKey, (MojInt64) count);
	MojErrCheck(err);
	err = objOut.put(DelMissesKey, (MojInt64) m_delMisses); // cumulative since start
	MojErrCheck(err);

	MojThreadReadGuard guard(m_lock);
	if (!m_watcherMap.empty()) {
		MojObject watcherInfo;
		for (WatcherMap::ConstIterator i = m_watcherMap.begin(); i != m_watcherMap.end(); ++i) {
			err = watcherInfo.put(i.key(), (MojInt64) i.value());
			MojErrCheck(err);
		}
		err = objOut.put(WatchesKey, watcherInfo);
		MojErrCheck(err);
	}
	return MojErrNone;
}
开发者ID:sailesharya，项目名称:db8，代码行数:34，代码来源:MojDbIndex.cpp

示例4: updateLocale

MojErr MojDbIndex::updateLocale(const MojChar* locale, MojDbReq& req)
{
    LOG_TRACE("Entering function %s", __FUNCTION__);
	MojAssert(isOpen());
	MojAssert(locale);

	bool haveCollate = false;
	for (PropVec::ConstIterator i = m_props.begin(); i != m_props.end(); ++i) {
       if ((*i)->collation() != MojDbCollationInvalid) {
			haveCollate = true;
			MojErr err = (*i)->updateLocale(locale);
			MojErrCheck(err);
       }
	}
	if (haveCollate) {
		// drop and reindex
		MojErr err = drop(req);
		MojErrCheck(err);
		err = build(req.txn());
		MojErrCheck(err);
	}
    m_locale.assign(locale);
    
	return MojErrNone;
}
开发者ID:sailesharya，项目名称:db8，代码行数:25，代码来源:MojDbIndex.cpp

示例5: readIds

MojErr MojDbKindState::readIds(const MojChar* key, MojDbReq& req, MojObject& objOut, MojRefCountedPtr<MojDbStorageItem>& itemOut)
{
	MojErr err = readObj(key, objOut, m_kindEngine->indexIdDb(), req.txn(), itemOut);
	MojErrCheck(err);

	return MojErrNone;
}
开发者ID:feniksa，项目名称:indb8，代码行数:7，代码来源:MojDbKindState.cpp

示例6: writeIds

MojErr MojDbKindState::writeIds(const MojChar* key, const MojObject& obj, MojDbReq& req, MojRefCountedPtr<MojDbStorageItem>& oldItem)
{
	MojErr err = writeObj(key, obj, m_kindEngine->indexIdDb(), req.txn(), oldItem);
	MojErrCheck(err);

	return MojErrNone;
}
开发者ID:feniksa，项目名称:indb8，代码行数:7，代码来源:MojDbKindState.cpp

示例7: open

MojErr MojDbIndex::open(MojDbStorageIndex* index, const MojObject& id, MojDbReq& req, bool created)
{
    LOG_TRACE("Entering function %s", __FUNCTION__);
	MojAssert(!isOpen() && !m_props.empty());
	MojAssert(index);

	// we don't want to take built-in props into account when sorting indexes,
	m_sortKey = m_propNames;
	m_id = id;

	MojDbKey idKey;
	MojErr err = idKey.assign(id);
	MojErrCheck(err);
	err = m_idSet.put(idKey);
	MojErrCheck(err);
	err = addBuiltinProps();
	MojErrCheck(err);

	if (created && !isIdIndex()) {
		// if this index was just created, we need to re-index before committing the transaction
		MojDbStorageTxn* txn = req.txn();
		txn->notifyPreCommit(m_preCommitSlot);
		txn->notifyPostCommit(m_postCommitSlot);
	} else {
		// otherwise it's ready
		m_ready = true;
	}
	// and we're open
	m_index.reset(index);
	m_collection = m_index.get();

	return MojErrNone;
}
开发者ID:sailesharya，项目名称:db8，代码行数:33，代码来源:MojDbIndex.cpp

示例8: initUsage

MojErr MojDbQuotaEngine::initUsage(MojDbKind* kind, MojDbReq& req)
{
	MojAssert(kind);

	MojRefCountedPtr<MojDbStorageItem> item;
	MojErr err = m_usageDb->get(kind->id(), req.txn(), false, item);
	MojErrCheck(err);
	if (!item.get()) {
		MojObject stats;
		MojSize usage = 0;
		err = kind->stats(stats, usage, req, false);
		MojErrCheck(err);
		err = insertUsage(kind->id(), (MojInt64) usage, req.txn());
		MojErrCheck(err);
	}
	return MojErrNone;
}
开发者ID:anttiharju-owo，项目名称:db8，代码行数:17，代码来源:MojDbQuotaEngine.cpp

示例9: drop

MojErr MojDbIndex::drop(MojDbReq& req)
{
    LOG_TRACE("Entering function %s", __FUNCTION__);
	MojAssert(isOpen());

	MojErr err = m_index->drop(req.txn());
	MojErrCheck(err);

	return MojErrNone;
}
开发者ID:sailesharya，项目名称:db8，代码行数:10，代码来源:MojDbIndex.cpp

示例10: drop

MojErr MojDbIndex::drop(MojDbReq& req)
{
	MojAssert(isOpen());
	MojLogTrace(s_log);

	MojErr err = m_index->drop(req.txn());
	MojErrCheck(err);

	return MojErrNone;
}
开发者ID:KyleMaas，项目名称:db8，代码行数:10，代码来源:MojDbIndex.cpp

示例11: open

MojErr MojDbQuotaEngine::open(const MojObject& conf, MojDb* db, MojDbReq& req)
{
    LOG_TRACE("Entering function %s", __FUNCTION__);
	MojAssert(db);

	MojErr err = db->storageEngine()->openDatabase(_T("UsageDbName"), req.txn(), m_usageDb);
	MojErrCheck(err);
	err = MojDbPutHandler::open(conf, db, req);
	MojErrCheck(err);

	MojDbKindEngine::KindMap& kinds = db->kindEngine()->kindMap();
	for (MojDbKindEngine::KindMap::ConstIterator i = kinds.begin();
		 i != kinds.end(); ++i) {
		err = initUsage(i.value().get(), req);
		MojErrCheck(err);
	}
	err = refreshImpl(req.txn());
	MojErrCheck(err);

	m_isOpen = true;

	return MojErrNone;
}
开发者ID:ctbrowser，项目名称:db8，代码行数:23，代码来源:MojDbQuotaEngine.cpp

示例12: initTokens

MojErr MojDbKindState::initTokens(MojDbReq& req, const StringSet& strings)
{
	// TODO: bug inside this function. (latest strace step)
	MojAssertMutexLocked(m_lock);

	// TODO: filing load tokens. Go inside readObj
	// load tokens
	MojErr err = readObj(TokensKey, m_tokensObj, m_kindEngine->kindDb(), req.txn(), m_oldTokensItem);
	MojErrCheck(err);

	// populate token vec
	MojUInt8 maxToken = 0;
	err = m_tokenVec.resize(m_tokensObj.size());
	MojErrCheck(err);
	for (MojObject::ConstIterator i = m_tokensObj.begin(); i != m_tokensObj.end(); ++i) {
		MojString key = i.key();
		MojInt64 value = i.value().intValue();
		MojSize idx = (MojSize) (value - MojObjectWriter::TokenStartMarker);
		if (value < MojObjectWriter::TokenStartMarker || value >= MojUInt8Max || idx >= m_tokenVec.size()) {
			MojErrThrow(MojErrDbInvalidToken);
		}
		if (value > maxToken) {
			maxToken = (MojUInt8) value;
		}
		err = m_tokenVec.setAt(idx, key);
		MojErrCheck(err);
	}
	if (maxToken > 0) {
		m_nextToken = (MojUInt8) (maxToken + 1);
	}

	// add strings
	bool updated = false;
	for (StringSet::ConstIterator i = strings.begin(); i != strings.end(); ++i) {
		if (!m_tokensObj.contains(*i)) {
			updated = true;
			MojUInt8 token = 0;
			TokenVec tokenVec;
			MojObject tokenObj;
			err = addPropImpl(*i, false, token, tokenVec, tokenObj);
			MojErrCheck(err);
		}
	}
	if (updated) {
		err = writeTokens(m_tokensObj);
		MojErrCheck(err);
	}
	return MojErrNone;
}
开发者ID:feniksa，项目名称:indb8，代码行数:49，代码来源:MojDbKindState.cpp

示例13: updateOwnIndexes

MojErr MojDbKind::updateOwnIndexes(const MojObject* newObj, const MojObject* oldObj, const MojDbReq& req, MojInt32& idxcount)
{
	
	MojInt32 count = 0;

	for (IndexVec::ConstIterator i = m_indexes.begin();
		 i != m_indexes.end(); ++i) {
		count++;
		MojErr err = (*i)->update(newObj, oldObj, req.txn(), req.fixmode());
		MojErrCheck(err);
	}
	MojLogInfo(s_log, _T("Kind_UpdateOwnIndexes: %s; count: %d \n"), this->id().data(), count);
	
	idxcount += count;
	return MojErrNone;
}
开发者ID:webOS101，项目名称:db8，代码行数:16，代码来源:MojDbKind.cpp

示例14: getImpl

MojErr MojDb::getImpl(const MojObject& id, MojObjectVisitor& visitor, MojDbOp op, MojDbReq& req)
{
	MojRefCountedPtr<MojDbStorageItem> item;
	MojErr err = m_objDb->get(id, req.txn(), false, item);
	MojErrCheck(err);
	if (item.get()) {
		MojString kindId;
		err = item->kindId(kindId, m_kindEngine);
		MojErrCheck(err);
		err = m_kindEngine.checkPermission(kindId, op, req);
		MojErrCheck(err);
		err = item->visit(visitor, m_kindEngine);
		MojErrCheck(err);
		err = item->close();
		MojErrCheck(err);
	}
	return MojErrNone;
}
开发者ID:KyleMaas，项目名称:db8，代码行数:18，代码来源:MojDb.cpp

示例15: open

MojErr MojDbKindEngine::open(MojDb* db, MojDbReq& req)
{
	MojAssert(db);
	MojAssertWriteLocked(db->m_schemaLock);
	MojLogTrace(s_log);

	// open kind db and index seq
	m_db = db;
	MojDbStorageEngine* engine = db->storageEngine();
	MojDbStorageTxn* txn = req.txn();
	MojAssert(engine);
	MojErr err = engine->openDatabase(KindsDbName, txn, m_kindDb);
	MojErrCheck(err);
	err = engine->openDatabase(IndexIdsDbName, txn, m_indexIdDb);
	MojErrCheck(err);
	err = engine->openSequence(IndexIdsSeqName, txn, m_indexIdSeq);
	MojErrCheck(err);
	// built-in kinds
	err = addBuiltin(RootKindJson, req);
	MojErrCheck(err);
	err = addBuiltin(KindKindJson, req);
	MojErrCheck(err);
	err = addBuiltin(RevTimestampJson, req);
	MojErrCheck(err);
	err = addBuiltin(DbStateJson, req);
	MojErrCheck(err);
	err = addBuiltin(PermissionJson, req);
	MojErrCheck(err);
	err = addBuiltin(QuotaJson, req);
	MojErrCheck(err);
	// built-in indexes
	err = setupRootKind();
	MojErrCheck(err);
	// locale
	err = db->getLocale(m_locale, req);
	MojErrCheck(err);
	// load kinds from obj db
	err = loadKinds(req);
	MojErrCheck(err);

	return MojErrNone;
}
开发者ID:feniksa，项目名称:indb8，代码行数:42，代码来源:MojDbKindEngine.cpp


注：本文中的MojDbReq::txn方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。