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more TDB

This commit is contained in:
Hongze Cheng 2022-03-25 06:42:42 +00:00
parent 9ffdf09986
commit cc176b1037
4 changed files with 68 additions and 10 deletions
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29
source/libs/tdb/src/db/tdbBtree.c
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@ -131,7 +131,7 @@ int tdbBtreeClose(SBTree *pBt) {
return 0;
}
int tdbBtreeCursor(SBTC *pCur, SBTree *pBt) {
int tdbBtcOpen(SBTC *pCur, SBTree *pBt) {
pCur->pBt = pBt;
pCur->iPage = -1;
pCur->pPage = NULL;
@ -210,7 +210,7 @@ int tdbBtreeGet(SBTree *pBt, const void *pKey, int kLen, void **ppVal, int *vLen
void *pVal;
SCellDecoder cd;
tdbBtreeCursor(&btc, pBt);
tdbBtcOpen(&btc, pBt);
tdbBtCursorMoveTo(&btc, pKey, kLen, &cret);
@ -1072,3 +1072,28 @@ static int tdbBtreeCellSize(const SPage *pPage, SCell *pCell) {
}
#endif
int tdbBtcMoveToFirst(SBTC *pBtc) {
// TODO
return 0;
}
int tdbBtcMoveToLast(SBTC *pBtc) {
// TODO
return 0;
}
int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen) {
// TODO
return 0;
}
int tdbBtreeNext(SBTC *pBtc, void **ppKey, int *kLen, void **ppVal, int *vLen) {
// TODO
return 0;
}
int tdbBtcClose(SBTC *pBtc) {
// TODO
return 0;
}

37
source/libs/tdb/src/db/tdbDb.c
View File

@ -20,6 +20,10 @@ struct STDB {
SBTree *pBt;
};
struct STDBC {
SBTC btc;
};
int tdbDbOpen(const char *fname, int keyLen, int valLen, FKeyComparator keyCmprFn, STEnv *pEnv, STDB **ppDb) {
STDB *pDb;
SPager *pPager;
@ -75,7 +79,7 @@ int tdbDbInsert(STDB *pDb, const void *pKey, int keyLen, const void *pVal, int v
int ret;
pCur = &btc;
ret = tdbBtreeCursor(pCur, pDb->pBt);
ret = tdbBtcOpen(pCur, pDb->pBt);
if (ret < 0) {
return -1;
}
@ -92,17 +96,38 @@ int tdbDbGet(STDB *pDb, const void *pKey, int kLen, void **ppVal, int *vLen) {
return tdbBtreeGet(pDb->pBt, pKey, kLen, ppVal, vLen);
}
int tdbDbcOpen(STDB *pDb, STDBC **ppTDbc) {
// TODO
int tdbDbcOpen(STDB *pDb, STDBC **ppDbc) {
int ret;
STDBC *pDbc = NULL;
*ppDbc = NULL;
pDbc = malloc(sizeof(*pDbc));
if (pDbc == NULL) {
return -1;
}
tdbBtcOpen(&pDbc->btc, pDb->pBt);
// TODO: move to first now, we can move to any key-value
// and in any direction, design new APIs.
ret = tdbBtcMoveToFirst(&pDbc->btc);
if (ret < 0) {
ASSERT(0);
return -1;
}
*ppDbc = pDbc;
return 0;
}
int tdbDbNext(STDBC *pDbc, void **ppKey, int *kLen, void **ppVal, int *vLen) {
// TODO
return 0;
return tdbBtreeNext(&pDbc->btc, ppKey, kLen, ppVal, vLen);
}
int tdbDbcClose(STDBC *pDbc) {
// TODO
if (pDbc) {
free(pDbc);
}
return 0;
}

10
source/libs/tdb/src/inc/tdbBtree.h
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@ -38,12 +38,20 @@ struct SBTC {
void *pBuf;
};
// SBTree
int tdbBtreeOpen(int keyLen, int valLen, SPager *pFile, FKeyComparator kcmpr, SBTree **ppBt);
int tdbBtreeClose(SBTree *pBt);
int tdbBtreeCursor(SBTC *pCur, SBTree *pBt);
int tdbBtCursorInsert(SBTC *pCur, const void *pKey, int kLen, const void *pVal, int vLen);
int tdbBtreeGet(SBTree *pBt, const void *pKey, int kLen, void **ppVal, int *vLen);
// SBTC
int tdbBtcOpen(SBTC *pCur, SBTree *pBt);
int tdbBtcMoveToFirst(SBTC *pBtc);
int tdbBtcMoveToLast(SBTC *pBtc);
int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen);
int tdbBtreeNext(SBTC *pBtc, void **ppKey, int *kLen, void **ppVal, int *vLen);
int tdbBtcClose(SBTC *pBtc);
#ifdef __cplusplus
}
#endif

2
source/libs/tdb/src/inc/tdbDb.h
View File

@ -31,7 +31,7 @@ int tdbDbInsert(STDB *pDb, const void *pKey, int keyLen, const void *pVal, int v
int tdbDbGet(STDB *pDb, const void *pKey, int kLen, void **ppVal, int *vLen);
// STDBC
int tdbDbcOpen(STDB *pDb, STDBC **ppTDbc);
int tdbDbcOpen(STDB *pDb, STDBC **ppDbc);
int tdbDbNext(STDBC *pDbc, void **ppKey, int *kLen, void **ppVal, int *vLen);
int tdbDbcClose(STDBC *pDbc);