fix child table query problem

source/dnode/vnode/src/meta/metaQuery.c

@@ -98,6 +98,8 @@ SMTbCursor *metaOpenTbCursor(SMeta *pMeta) {
 
   tdbDbcOpen(pMeta->pUidIdx, &pTbCur->pDbc, NULL);
 
+  tdbDbcMoveToFirst(pTbCur->pDbc);
+
   return pTbCur;
 }
 
@@ -185,7 +187,9 @@ struct SMCtbCursor {
 
 SMCtbCursor *metaOpenCtbCursor(SMeta *pMeta, tb_uid_t uid) {
   SMCtbCursor *pCtbCur = NULL;
+  SCtbIdxKey   ctbIdxKey;
   int          ret;
+  int          c;
 
   pCtbCur = (SMCtbCursor *)taosMemoryCalloc(1, sizeof(*pCtbCur));
   if (pCtbCur == NULL) {
@@ -199,6 +203,14 @@ SMCtbCursor *metaOpenCtbCursor(SMeta *pMeta, tb_uid_t uid) {
     return NULL;
   }
 
+  // move to the suid
+  ctbIdxKey.suid = uid;
+  ctbIdxKey.uid = INT64_MIN;
+  tdbDbcMoveTo(pCtbCur->pCur, &ctbIdxKey, sizeof(ctbIdxKey), &c);
+  if (c > 0) {
+    tdbDbcMoveToNext(pCtbCur->pCur);
+  }
+
   return pCtbCur;
 }
 
@@ -225,6 +237,9 @@ tb_uid_t metaCtbCursorNext(SMCtbCursor *pCtbCur) {
   }
 
   pCtbIdxKey = pCtbCur->pKey;
+  if (pCtbIdxKey->suid > pCtbCur->suid) {
+    return 0;
+  }
 
   return pCtbIdxKey->uid;
 }

source/dnode/vnode/src/meta/metaTDBImpl.c

@@ -289,7 +289,7 @@ int metaSaveTableToDB(SMeta *pMeta, STbCfg *pTbCfg, STbDdlH *pHandle) {
   pVal = pBuf = buf;
   metaEncodeTbInfo(&pBuf, pTbCfg);
   vLen = POINTER_DISTANCE(pBuf, buf);
-  ret = tdbDbInsert(pMetaDb->pTbDB, pKey, kLen, pVal, vLen, &pMetaDb->txn);
+  ret = tdbDbPut(pMetaDb->pTbDB, pKey, kLen, pVal, vLen, &pMetaDb->txn);
   if (ret < 0) {
     return -1;
   }
@@ -311,7 +311,7 @@ int metaSaveTableToDB(SMeta *pMeta, STbCfg *pTbCfg, STbDdlH *pHandle) {
     pVal = pBuf = buf;
     metaEncodeSchemaEx(&pBuf, &schemaWrapper);
     vLen = POINTER_DISTANCE(pBuf, buf);
-    ret = tdbDbInsert(pMetaDb->pSchemaDB, pKey, kLen, pVal, vLen, &pMeta->pDB->txn);
+    ret = tdbDbPut(pMetaDb->pSchemaDB, pKey, kLen, pVal, vLen, &pMeta->pDB->txn);
     if (ret < 0) {
       return -1;
     }
@@ -325,7 +325,7 @@ int metaSaveTableToDB(SMeta *pMeta, STbCfg *pTbCfg, STbDdlH *pHandle) {
   kLen = nameLen + 1 + sizeof(uid);
   pVal = NULL;
   vLen = 0;
-  ret = tdbDbInsert(pMetaDb->pNameIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
+  ret = tdbDbPut(pMetaDb->pNameIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
   if (ret < 0) {
     return -1;
   }
@@ -336,7 +336,7 @@ int metaSaveTableToDB(SMeta *pMeta, STbCfg *pTbCfg, STbDdlH *pHandle) {
     kLen = sizeof(uid);
     pVal = NULL;
     vLen = 0;
-    ret = tdbDbInsert(pMetaDb->pStbIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
+    ret = tdbDbPut(pMetaDb->pStbIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
     if (ret < 0) {
       return -1;
     }
@@ -347,7 +347,7 @@ int metaSaveTableToDB(SMeta *pMeta, STbCfg *pTbCfg, STbDdlH *pHandle) {
     kLen = sizeof(ctbIdxKey);
     pVal = NULL;
     vLen = 0;
-    ret = tdbDbInsert(pMetaDb->pCtbIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
+    ret = tdbDbPut(pMetaDb->pCtbIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
     if (ret < 0) {
       return -1;
     }
@@ -362,7 +362,7 @@ int metaSaveTableToDB(SMeta *pMeta, STbCfg *pTbCfg, STbDdlH *pHandle) {
     kLen = sizeof(uid);
     pVal = NULL;
     vLen = 0;
-    ret = tdbDbInsert(pMetaDb->pNtbIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
+    ret = tdbDbPut(pMetaDb->pNtbIdx, pKey, kLen, pVal, vLen, &pMetaDb->txn);
     if (ret < 0) {
       return -1;
     }
@@ -530,7 +530,7 @@ int metaSaveSmaToDB(SMeta *pMeta, STSma *pSmaCfg) {
   int32_t kLen = sizeof(pSmaCfg->indexUid);
   int32_t vLen = POINTER_DISTANCE(qBuf, pBuf);
 
-  ret = tdbDbInsert(pMeta->pDB->pSmaDB, key, kLen, val, vLen, &pMetaDb->txn);
+  ret = tdbDbPut(pMeta->pDB->pSmaDB, key, kLen, val, vLen, &pMetaDb->txn);
   if (ret < 0) {
     taosMemoryFreeClear(pBuf);
     return -1;
@@ -545,7 +545,7 @@ int metaSaveSmaToDB(SMeta *pMeta, STSma *pSmaCfg) {
   val = NULL;
   vLen = 0;
 
-  ret = tdbDbInsert(pMeta->pDB->pSmaIdx, key, kLen, val, vLen, &pMetaDb->txn);
+  ret = tdbDbPut(pMeta->pDB->pSmaIdx, key, kLen, val, vLen, &pMetaDb->txn);
   if (ret < 0) {
     taosMemoryFreeClear(pBuf);
     return -1;

source/dnode/vnode/src/meta/metaTable.c

@@ -218,7 +218,7 @@ static int metaSaveToTbDb(SMeta *pMeta, const SMetaEntry *pME) {
   tCoderClear(&coder);
 
   // write to table.db
-  if (tdbDbInsert(pMeta->pTbDb, pKey, kLen, pVal, vLen, &pMeta->txn) < 0) {
+  if (tdbDbPut(pMeta->pTbDb, pKey, kLen, pVal, vLen, &pMeta->txn) < 0) {
     goto _err;
   }
 
@@ -231,11 +231,11 @@ _err:
 }
 
 static int metaUpdateUidIdx(SMeta *pMeta, const SMetaEntry *pME) {
-  return tdbDbInsert(pMeta->pUidIdx, &pME->uid, sizeof(tb_uid_t), &pME->version, sizeof(int64_t), &pMeta->txn);
+  return tdbDbPut(pMeta->pUidIdx, &pME->uid, sizeof(tb_uid_t), &pME->version, sizeof(int64_t), &pMeta->txn);
 }
 
 static int metaUpdateNameIdx(SMeta *pMeta, const SMetaEntry *pME) {
-  return tdbDbInsert(pMeta->pNameIdx, pME->name, strlen(pME->name) + 1, &pME->uid, sizeof(tb_uid_t), &pMeta->txn);
+  return tdbDbPut(pMeta->pNameIdx, pME->name, strlen(pME->name) + 1, &pME->uid, sizeof(tb_uid_t), &pMeta->txn);
 }
 
 static int metaUpdateTtlIdx(SMeta *pMeta, const SMetaEntry *pME) {
@@ -258,12 +258,12 @@ static int metaUpdateTtlIdx(SMeta *pMeta, const SMetaEntry *pME) {
   ttlKey.dtime = ctime + ttlDays * 24 * 60 * 60;
   ttlKey.uid = pME->uid;
 
-  return tdbDbInsert(pMeta->pTtlIdx, &ttlKey, sizeof(ttlKey), NULL, 0, &pMeta->txn);
+  return tdbDbPut(pMeta->pTtlIdx, &ttlKey, sizeof(ttlKey), NULL, 0, &pMeta->txn);
 }
 
 static int metaUpdateCtbIdx(SMeta *pMeta, const SMetaEntry *pME) {
   SCtbIdxKey ctbIdxKey = {.suid = pME->ctbEntry.suid, .uid = pME->uid};
-  return tdbDbInsert(pMeta->pCtbIdx, &ctbIdxKey, sizeof(ctbIdxKey), NULL, 0, &pMeta->txn);
+  return tdbDbPut(pMeta->pCtbIdx, &ctbIdxKey, sizeof(ctbIdxKey), NULL, 0, &pMeta->txn);
 }
 
 static int metaUpdateTagIdx(SMeta *pMeta, const SMetaEntry *pME) {
@@ -304,7 +304,7 @@ static int metaSaveToSkmDb(SMeta *pMeta, const SMetaEntry *pME) {
   tCoderInit(&coder, TD_LITTLE_ENDIAN, pVal, vLen, TD_ENCODER);
   tEncodeSSchemaWrapper(&coder, pSW);
 
-  if (tdbDbInsert(pMeta->pSkmDb, &skmDbKey, sizeof(skmDbKey), pVal, vLen, &pMeta->txn) < 0) {
+  if (tdbDbPut(pMeta->pSkmDb, &skmDbKey, sizeof(skmDbKey), pVal, vLen, &pMeta->txn) < 0) {
     rcode = -1;
     goto _exit;
   }

source/dnode/vnode/src/tsdb/tsdbTDBImpl.c

@@ -97,7 +97,7 @@ int32_t tsdbCloseDBF(SDBFile *pDBF) {
 int32_t tsdbSaveSmaToDB(SDBFile *pDBF, void *pKey, int32_t keyLen, void *pVal, int32_t valLen, TXN *txn) {
   int32_t ret;
 
-  ret = tdbDbInsert(pDBF->pDB, pKey, keyLen, pVal, valLen, txn);
+  ret = tdbDbPut(pDBF->pDB, pKey, keyLen, pVal, valLen, txn);
   if (ret < 0) {
     tsdbError("Failed to create insert sma data into db, ret = %d", ret);
     return -1;

source/libs/tdb/inc/tdb.h

@@ -40,7 +40,7 @@ int tdbCommit(TENV *pEnv, TXN *pTxn);
 int tdbDbOpen(const char *fname, int keyLen, int valLen, tdb_cmpr_fn_t keyCmprFn, TENV *pEnv, TDB **ppDb);
 int tdbDbClose(TDB *pDb);
 int tdbDbDrop(TDB *pDb);
-int tdbDbInsert(TDB *pDb, const void *pKey, int keyLen, const void *pVal, int valLen, TXN *pTxn);
+int tdbDbPut(TDB *pDb, const void *pKey, int keyLen, const void *pVal, int valLen, TXN *pTxn);
 int tdbDbGet(TDB *pDb, const void *pKey, int kLen, void **ppVal, int *vLen);
 int tdbDbPGet(TDB *pDb, const void *pKey, int kLen, void **ppKey, int *pkLen, void **ppVal, int *vLen);
 
@@ -52,6 +52,7 @@ int tdbDbcMoveToFirst(TDBC *pDbc);
 int tdbDbcMoveToLast(TDBC *pDbc);
 int tdbDbcMoveToNext(TDBC *pDbc);
 int tdbDbcMoveToPrev(TDBC *pDbc);
+int tdbDbcGet(TDBC *pDbc, const void **ppKey, int *pkLen, const void **ppVal, int *pvLen);
 
 int tdbDbcPut(TDBC *pDbc, const void *pKey, int keyLen, const void *pVal, int valLen);
 int tdbDbcUpdate(TDBC *pDbc, const void *pKey, int kLen, const void *pVal, int vLen);

source/libs/tdb/src/db/tdbBtree.c

@@ -58,15 +58,6 @@ typedef struct {
   SBTree *pBt;
 } SBtreeInitPageArg;
 
-typedef struct {
-  int       kLen;
-  const u8 *pKey;
-  int       vLen;
-  const u8 *pVal;
-  SPgno     pgno;
-  u8       *pBuf;
-} SCellDecoder;
-
 static int tdbDefaultKeyCmprFn(const void *pKey1, int keyLen1, const void *pKey2, int keyLen2);
 static int tdbBtreeOpenImpl(SBTree *pBt);
 static int tdbBtreeInitPage(SPage *pPage, void *arg, int init);
@@ -75,7 +66,6 @@ static int tdbBtreeEncodeCell(SPage *pPage, const void *pKey, int kLen, const vo
 static int tdbBtreeDecodeCell(SPage *pPage, const SCell *pCell, SCellDecoder *pDecoder);
 static int tdbBtreeBalance(SBTC *pBtc);
 static int tdbBtreeCellSize(const SPage *pPage, SCell *pCell);
-static int tdbBtcMoveToNext(SBTC *pBtc);
 static int tdbBtcMoveDownward(SBTC *pBtc);
 static int tdbBtcMoveUpward(SBTC *pBtc);
 
@@ -1017,6 +1007,7 @@ int tdbBtcOpen(SBTC *pBtc, SBTree *pBt, TXN *pTxn) {
   pBtc->iPage = -1;
   pBtc->pPage = NULL;
   pBtc->idx = -1;
+  memset(&pBtc->coder, 0, sizeof(SCellDecoder));
 
   if (pTxn == NULL) {
     pBtc->pTxn = &pBtc->txn;
@@ -1059,6 +1050,8 @@ int tdbBtcMoveToFirst(SBTC *pBtc) {
       return 0;
     }
   } else {
+    ASSERT(0);
+#if 0
     // move from a position
     int iPage = 0;
 
@@ -1076,6 +1069,7 @@ int tdbBtcMoveToFirst(SBTC *pBtc) {
 
       tdbBtcMoveUpward(pBtc);
     }
+#endif
   }
 
   // move downward
@@ -1124,6 +1118,8 @@ int tdbBtcMoveToLast(SBTC *pBtc) {
       return 0;
     }
   } else {
+    ASSERT(0);
+#if 0
     int iPage = 0;
 
     // downward search
@@ -1146,6 +1142,7 @@ int tdbBtcMoveToLast(SBTC *pBtc) {
 
       tdbBtcMoveUpward(pBtc);
     }
+#endif
   }
 
   // move downward
@@ -1215,7 +1212,7 @@ int tdbBtreeNext(SBTC *pBtc, void **ppKey, int *kLen, void **ppVal, int *vLen) {
   return 0;
 }
 
-static int tdbBtcMoveToNext(SBTC *pBtc) {
+int tdbBtcMoveToNext(SBTC *pBtc) {
   int    nCells;
   int    ret;
   SCell *pCell;
@@ -1261,6 +1258,43 @@ static int tdbBtcMoveToNext(SBTC *pBtc) {
   return 0;
 }
 
+int tdbBtcMoveToPrev(SBTC *pBtc) {
+  if (pBtc->idx < 0) return -1;
+
+  pBtc->idx--;
+  if (pBtc->idx >= 0) {
+    return 0;
+  }
+
+  // move upward
+  for (;;) {
+    if (pBtc->iPage == 0) {
+      pBtc->idx = -1;
+      return 0;
+    }
+
+    tdbBtcMoveUpward(pBtc);
+    pBtc->idx--;
+    if (pBtc->idx >= 0) {
+      break;
+    }
+  }
+
+  // move downward
+  for (;;) {
+    if (TDB_BTREE_PAGE_IS_LEAF(pBtc->pPage)) break;
+
+    tdbBtcMoveDownward(pBtc);
+    if (TDB_BTREE_PAGE_IS_LEAF(pBtc->pPage)) {
+      pBtc->idx = TDB_PAGE_TOTAL_CELLS(pBtc->pPage) - 1;
+    } else {
+      pBtc->idx = TDB_PAGE_TOTAL_CELLS(pBtc->pPage);
+    }
+  }
+
+  return 0;
+}
+
 static int tdbBtcMoveDownward(SBTC *pBtc) {
   int    ret;
   SPgno  pgno;
@@ -1306,14 +1340,38 @@ static int tdbBtcMoveUpward(SBTC *pBtc) {
   return 0;
 }
 
+int tdbBtcGet(SBTC *pBtc, const void **ppKey, int *kLen, const void **ppVal, int *vLen) {
+  SCell *pCell;
+
+  if (pBtc->idx < 0 || pBtc->idx >= TDB_PAGE_TOTAL_CELLS(pBtc->pPage)) {
+    return -1;
+  }
+
+  pCell = tdbPageGetCell(pBtc->pPage, pBtc->idx);
+  tdbBtreeDecodeCell(pBtc->pPage, pCell, &pBtc->coder);
+
+  if (ppKey) {
+    *ppKey = (void *)pBtc->coder.pKey;
+    *kLen = pBtc->coder.kLen;
+  }
+
+  if (ppVal) {
+    *ppVal = (void *)pBtc->coder.pVal;
+    *kLen = pBtc->coder.vLen;
+  }
+
+  return 0;
+}
+
 int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst) {
-  int          ret;
-  int          nCells;
-  int          c;
-  SCell       *pCell;
-  SCellDecoder cd = {0};
-  SBTree      *pBt = pBtc->pBt;
-  SPager      *pPager = pBt->pPager;
+  int         ret;
+  int         nCells;
+  int         c;
+  SCell      *pCell;
+  SBTree     *pBt = pBtc->pBt;
+  SPager     *pPager = pBt->pPager;
+  const void *pTKey;
+  int         tkLen;
 
   if (pBtc->iPage < 0) {
     // move from a clear cursor
@@ -1330,6 +1388,8 @@ int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst) {
     // for empty tree, just return with an invalid position
     if (TDB_PAGE_TOTAL_CELLS(pBtc->pPage) == 0) return 0;
   } else {
+    ASSERT(0);
+#if 0
     SPage *pPage;
     int    idx;
     int    iPage = 0;
@@ -1364,11 +1424,12 @@ int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst) {
       if (pBtc->iPage == iPage) break;
       tdbBtcMoveUpward(pBtc);
     }
+#endif
   }
 
   // search downward to the leaf
   for (;;) {
-    int    lidx, ridx, midx;
+    int    lidx, ridx;
     SPage *pPage;
 
     pPage = pBtc->pPage;
@@ -1377,13 +1438,11 @@ int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst) {
     ridx = nCells - 1;
 
     ASSERT(nCells > 0);
-    ASSERT(pBtc->idx == -1);
 
     // compare first cell
-    midx = lidx;
-    pCell = tdbPageGetCell(pPage, midx);
-    tdbBtreeDecodeCell(pPage, pCell, &cd);
-    c = pBt->kcmpr(pKey, kLen, cd.pKey, cd.kLen);
+    pBtc->idx = lidx;
+    tdbBtcGet(pBtc, &pTKey, &tkLen, NULL, NULL);
+    c = pBt->kcmpr(pKey, kLen, pTKey, tkLen);
     if (c <= 0) {
       ridx = lidx - 1;
     } else {
@@ -1392,10 +1451,9 @@ int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst) {
 
     // compare last cell
     if (lidx <= ridx) {
-      midx = ridx;
-      pCell = tdbPageGetCell(pPage, midx);
-      tdbBtreeDecodeCell(pPage, pCell, &cd);
-      c = pBt->kcmpr(pKey, kLen, cd.pKey, cd.kLen);
+      pBtc->idx = ridx;
+      tdbBtcGet(pBtc, &pTKey, &tkLen, NULL, NULL);
+      c = pBt->kcmpr(pKey, kLen, pTKey, tkLen);
       if (c >= 0) {
         lidx = ridx + 1;
       } else {
@@ -1407,24 +1465,15 @@ int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst) {
     for (;;) {
       if (lidx > ridx) break;
 
-      midx = (lidx + ridx) >> 1;
-
-      pCell = tdbPageGetCell(pPage, midx);
-      ret = tdbBtreeDecodeCell(pPage, pCell, &cd);
-      if (ret < 0) {
-        // TODO: handle error
-        ASSERT(0);
-        return -1;
-      }
-
-      // Compare the key values
-      c = pBt->kcmpr(pKey, kLen, cd.pKey, cd.kLen);
+      pBtc->idx = (lidx + ridx) >> 1;
+      tdbBtcGet(pBtc, &pTKey, &tkLen, NULL, NULL);
+      c = pBt->kcmpr(pKey, kLen, pTKey, tkLen);
       if (c < 0) {
         // pKey < cd.pKey
-        ridx = midx - 1;
+        ridx = pBtc->idx - 1;
       } else if (c > 0) {
         // pKey > cd.pKey
-        lidx = midx + 1;
+        lidx = pBtc->idx + 1;
       } else {
         // pKey == cd.pKey
         break;
@@ -1433,14 +1482,11 @@ int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst) {
 
     // keep search downward or break
     if (TDB_BTREE_PAGE_IS_LEAF(pPage)) {
-      pBtc->idx = midx;
       *pCRst = c;
       break;
     } else {
-      if (c <= 0) {
-        pBtc->idx = midx;
-      } else {
-        pBtc->idx = midx + 1;
+      if (c > 0) {
+        pBtc->idx += 1;
       }
       tdbBtcMoveDownward(pBtc);
     }

source/libs/tdb/src/db/tdbDb.c

@@ -75,7 +75,7 @@ int tdbDbDrop(TDB *pDb) {
   return 0;
 }
 
-int tdbDbInsert(TDB *pDb, const void *pKey, int keyLen, const void *pVal, int valLen, TXN *pTxn) {
+int tdbDbPut(TDB *pDb, const void *pKey, int keyLen, const void *pVal, int valLen, TXN *pTxn) {
   return tdbBtreeInsert(pDb->pBt, pKey, keyLen, pVal, valLen, pTxn);
 }
 
@@ -99,14 +99,6 @@ int tdbDbcOpen(TDB *pDb, TDBC **ppDbc, TXN *pTxn) {
 
   tdbBtcOpen(&pDbc->btc, pDb->pBt, pTxn);
 
-  // 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;
 }
@@ -117,10 +109,12 @@ int tdbDbcMoveToFirst(TDBC *pDbc) { return tdbBtcMoveToFirst(&pDbc->btc); }
 
 int tdbDbcMoveToLast(TDBC *pDbc) { return tdbBtcMoveToLast(&pDbc->btc); }
 
-int tdbDbcMoveToNext(TDBC *pDbc) { return 0; }
-int tdbDbcMoveToPrev(TDBC *pDbc) {
-  // TODO
-  return 0;
+int tdbDbcMoveToNext(TDBC *pDbc) { return tdbBtcMoveToNext(&pDbc->btc); }
+
+int tdbDbcMoveToPrev(TDBC *pDbc) { return tdbBtcMoveToPrev(&pDbc->btc); }
+
+int tdbDbcGet(TDBC *pDbc, const void **ppKey, int *pkLen, const void **ppVal, int *pvLen) {
+  return tdbBtcGet(&pDbc->btc, ppKey, pkLen, ppVal, pvLen);
 }
 
 int tdbDbcPut(TDBC *pDbc, const void *pKey, int keyLen, const void *pVal, int valLen) {
@@ -147,6 +141,7 @@ int tdbDbcNext(TDBC *pDbc, void **ppKey, int *kLen, void **ppVal, int *vLen) {
 
 int tdbDbcClose(TDBC *pDbc) {
   if (pDbc) {
+    tdbBtcClose(&pDbc->btc);
     tdbOsFree(pDbc);
   }
 

source/libs/tdb/src/inc/tdbInt.h

@@ -103,15 +103,25 @@ typedef struct SBtInfo {
   int   nData;
 } SBtInfo;
 
+typedef struct {
+  int       kLen;
+  const u8 *pKey;
+  int       vLen;
+  const u8 *pVal;
+  SPgno     pgno;
+  u8       *pBuf;
+} SCellDecoder;
+
 struct SBTC {
-  SBTree *pBt;
-  i8      iPage;
-  SPage  *pPage;
-  int     idx;
-  int     idxStack[BTREE_MAX_DEPTH + 1];
-  SPage  *pgStack[BTREE_MAX_DEPTH + 1];
-  TXN    *pTxn;
-  TXN     txn;
+  SBTree      *pBt;
+  i8           iPage;
+  SPage       *pPage;
+  int          idx;
+  int          idxStack[BTREE_MAX_DEPTH + 1];
+  SPage       *pgStack[BTREE_MAX_DEPTH + 1];
+  SCellDecoder coder;
+  TXN         *pTxn;
+  TXN          txn;
 };
 
 // SBTree
@@ -123,11 +133,14 @@ int tdbBtreePGet(SBTree *pBt, const void *pKey, int kLen, void **ppKey, int *pkL
 
 // SBTC
 int tdbBtcOpen(SBTC *pBtc, SBTree *pBt, TXN *pTxn);
+int tdbBtcClose(SBTC *pBtc);
 int tdbBtcMoveTo(SBTC *pBtc, const void *pKey, int kLen, int *pCRst);
 int tdbBtcMoveToFirst(SBTC *pBtc);
 int tdbBtcMoveToLast(SBTC *pBtc);
+int tdbBtcMoveToNext(SBTC *pBtc);
+int tdbBtcMoveToPrev(SBTC *pBtc);
 int tdbBtreeNext(SBTC *pBtc, void **ppKey, int *kLen, void **ppVal, int *vLen);
-int tdbBtcClose(SBTC *pBtc);
+int tdbBtcGet(SBTC *pBtc, const void **ppKey, int *kLen, const void **ppVal, int *vLen);
 
 // tdbPager.c ====================================
 

source/libs/tdb/test/tdbTest.cpp

@@ -152,7 +152,7 @@ TEST(tdb_test, simple_test) {
     for (int iData = 1; iData <= nData; iData++) {
       sprintf(key, "key%d", iData);
       sprintf(val, "value%d", iData);
-      ret = tdbDbInsert(pDb, key, strlen(key), val, strlen(val), &txn);
+      ret = tdbDbPut(pDb, key, strlen(key), val, strlen(val), &txn);
       GTEST_ASSERT_EQ(ret, 0);
 
       // if pool is full, commit the transaction and start a new one
@@ -269,7 +269,7 @@ TEST(tdb_test, simple_test2) {
     for (int iData = 1; iData <= nData; iData++) {
       sprintf(key, "key%d", iData);
       sprintf(val, "value%d", iData);
-      ret = tdbDbInsert(pDb, key, strlen(key), val, strlen(val), &txn);
+      ret = tdbDbPut(pDb, key, strlen(key), val, strlen(val), &txn);
       GTEST_ASSERT_EQ(ret, 0);
     }