more TDB

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

@@ -17,4 +17,35 @@
 
 struct SBtCursor {
   // TODO
-};
\ No newline at end of file
+};
+
+static int btreeCreate(SBTree **pBt);
+static int btreeDestroy(SBTree *pBt);
+
+int btreeOpen(SBTree **ppBt, SPgFile *pPgFile) {
+  SBTree *pBt;
+  int     ret;
+
+  ret = btreeCreate(&pBt);
+  if (ret != 0) {
+    return -1;
+  }
+
+  *ppBt = pBt;
+  return 0;
+}
+
+int btreeClose(SBTree *pBt) {
+  // TODO
+  return 0;
+}
+
+static int btreeCreate(SBTree **pBt) {
+  // TODO
+  return 0;
+}
+
+static int btreeDestroy(SBTree *pBt) {
+  // TODO
+  return 0;
+}
\ No newline at end of file

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

@@ -16,7 +16,7 @@
 #include "tdbInt.h"
 
 struct STDb {
-  SBTree   btree;    // current access method
+  SBTree * pBt;      // current access method
   SPgFile *pPgFile;  // backend page file this DB is using
   TENV *   pEnv;     // TENV containing the DB
 };
@@ -47,6 +47,7 @@ int tdbOpen(TDB **ppDb, const char *fname, const char *dbname, TENV *pEnv) {
   uint8_t   fileid[TDB_FILE_ID_LEN];
   SPgFile * pPgFile;
   SPgCache *pPgCache;
+  SBTree *  pBt;
 
   // Create DB if DB handle is not created yet
   if (ppDb == NULL) {
@@ -78,6 +79,7 @@ int tdbOpen(TDB **ppDb, const char *fname, const char *dbname, TENV *pEnv) {
   }
 
   // Check if the SPgFile already opened
+  tdbGnrtFileID(fname, fileid, false);
   pPgFile = tdbEnvGetPageFile(pEnv, fileid);
   if (pPgFile == NULL) {
     pPgCache = tdbEnvGetPgCache(pEnv);
@@ -89,6 +91,11 @@ int tdbOpen(TDB **ppDb, const char *fname, const char *dbname, TENV *pEnv) {
   pDb->pPgFile = pPgFile;
 
   // open the access method (TODO)
+  if (btreeOpen(&pBt, pPgFile) != 0) {
+    return -1;
+  }
+
+  pDb->pBt = pBt;
 
   return 0;
 }

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

@@ -24,7 +24,7 @@ typedef struct SBTree    SBTree;
 typedef struct SBtCursor SBtCursor;
 
 // SBTree
-int btreeOpen(SBTree **ppBt);
+int btreeOpen(SBTree **ppBt, SPgFile *pPgFile);
 int btreeClose(SBTree *pBt);
 
 // SBtCursor

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

@@ -20,7 +20,6 @@
 extern "C" {
 #endif
 
-typedef struct SPgFile SPgFile;
 struct SPgFile {
   char *    fname;                    // backend file name
   uint8_t   fileid[TDB_FILE_ID_LEN];  // file id

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

@@ -25,6 +25,8 @@
 extern "C" {
 #endif
 
+typedef struct SPgFile SPgFile;
+
 // pgno_t
 typedef int32_t pgno_t;
 #define TDB_IVLD_PGNO ((pgno_t)-1)