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design dbc api

This commit is contained in:
Hongze Cheng 2022-03-25 06:15:21 +00:00
parent f4359a6fb3
commit 9ffdf09986
3 changed files with 44 additions and 4 deletions
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15
source/libs/tdb/src/db/tdbDb.c
View File

@ -90,4 +90,19 @@ 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) {
return tdbBtreeGet(pDb->pBt, pKey, kLen, ppVal, vLen);
}
int tdbDbcOpen(STDB *pDb, STDBC **ppTDbc) {
// TODO
return 0;
}
int tdbDbNext(STDBC *pDbc, void **ppKey, int *kLen, void **ppVal, int *vLen) {
// TODO
return 0;
}
int tdbDbcClose(STDBC *pDbc) {
// TODO
return 0;
}

8
source/libs/tdb/src/inc/tdbDb.h
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@ -21,14 +21,20 @@ extern "C" {
#endif
typedef struct STDB STDB;
typedef struct STDbC STDbC;
typedef struct STDBC STDBC;
// STDB
int tdbDbOpen(const char *fname, int keyLen, int valLen, FKeyComparator keyCmprFn, STEnv *pEnv, STDB **ppDb);
int tdbDbClose(STDB *pDb);
int tdbDbDrop(STDB *pDb);
int tdbDbInsert(STDB *pDb, const void *pKey, int keyLen, const void *pVal, int valLen);
int tdbDbGet(STDB *pDb, const void *pKey, int kLen, void **ppVal, int *vLen);
// STDBC
int tdbDbcOpen(STDB *pDb, STDBC **ppTDbc);
int tdbDbNext(STDBC *pDbc, void **ppKey, int *kLen, void **ppVal, int *vLen);
int tdbDbcClose(STDBC *pDbc);
#ifdef __cplusplus
}
#endif

25
source/libs/tdb/test/tdbTest.cpp
View File

@ -48,9 +48,28 @@ TEST(tdb_test, simple_test) {
TDB_FREE(pVal);
}
{ // Loop to query the data
// STDbC *pDBC;
// tdbDBNext(pDBC, p)
{ // Iterate to query the DB data
STDBC *pDBC;
void *pKey = NULL;
void *pVal = NULL;
int vLen, kLen;
int count = 0;
ret = tdbDbcOpen(pDb, &pDBC);
GTEST_ASSERT_EQ(ret, 0);
for (;;) {
ret = tdbDbNext(pDBC, &pKey, &kLen, &pVal, &vLen);
if (ret < 0) break;
count++;
}
GTEST_ASSERT_EQ(count, nData);
tdbDbcClose(pDBC);
TDB_FREE(pKey);
TDB_FREE(pVal);
}
}