79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "tdatablock.h"
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#include "tdbInt.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _STREAM_STATE_H_
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#define _STREAM_STATE_H_
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typedef struct SStreamTask SStreamTask;
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// incremental state storage
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typedef struct {
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SStreamTask* pOwner;
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TDB* db;
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TTB* pStateDb;
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TTB* pFuncStateDb;
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TXN txn;
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} SStreamState;
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SStreamState* streamStateOpen(char* path, SStreamTask* pTask);
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void streamStateClose(SStreamState* pState);
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int32_t streamStateBegin(SStreamState* pState);
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int32_t streamStateCommit(SStreamState* pState);
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int32_t streamStateAbort(SStreamState* pState);
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typedef struct {
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TBC* pCur;
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} SStreamStateCur;
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#if 1
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int32_t streamStateFuncPut(SStreamState* pState, const STupleKey* key, const void* value, int32_t vLen);
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int32_t streamStateFuncGet(SStreamState* pState, const STupleKey* key, void** pVal, int32_t* pVLen);
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int32_t streamStateFuncDel(SStreamState* pState, const STupleKey* key);
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int32_t streamStatePut(SStreamState* pState, const SWinKey* key, const void* value, int32_t vLen);
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int32_t streamStateGet(SStreamState* pState, const SWinKey* key, void** pVal, int32_t* pVLen);
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int32_t streamStateDel(SStreamState* pState, const SWinKey* key);
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int32_t streamStateAddIfNotExist(SStreamState* pState, const SWinKey* key, void** pVal, int32_t* pVLen);
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int32_t streamStateReleaseBuf(SStreamState* pState, const SWinKey* key, void* pVal);
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void streamFreeVal(void* val);
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SStreamStateCur* streamStateGetCur(SStreamState* pState, const SWinKey* key);
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SStreamStateCur* streamStateSeekKeyNext(SStreamState* pState, const SWinKey* key);
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SStreamStateCur* streamStateSeekKeyPrev(SStreamState* pState, const SWinKey* key);
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void streamStateFreeCur(SStreamStateCur* pCur);
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int32_t streamStateGetKVByCur(SStreamStateCur* pCur, SWinKey* pKey, const void** pVal, int32_t* pVLen);
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int32_t streamStateSeekFirst(SStreamState* pState, SStreamStateCur* pCur);
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int32_t streamStateSeekLast(SStreamState* pState, SStreamStateCur* pCur);
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int32_t streamStateCurNext(SStreamState* pState, SStreamStateCur* pCur);
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int32_t streamStateCurPrev(SStreamState* pState, SStreamStateCur* pCur);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ifndef _STREAM_STATE_H_ */
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