more work

include/dnode/vnode/meta/meta.h

@@ -48,7 +48,7 @@ int    metaDropTable(SMeta *pMeta, tb_uid_t uid);
 int    metaCommit(SMeta *pMeta);
 
 // For Query
-int metaGetTableInfo(SMeta *pMeta, const char *tbname, STableMetaMsg **ppMsg);
+int metaGetTableInfo(SMeta *pMeta, char *tbname, STableMetaMsg **ppMsg);
 
 // Options
 void metaOptionsInit(SMetaCfg *pMetaCfg);

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

@@ -431,17 +431,79 @@ static void metaClearTbCfg(STbCfg *pTbCfg) {
 }
 
 /* ------------------------ FOR QUERY ------------------------ */
-int metaGetTableInfo(SMeta *pMeta, const char *tbname, STableMetaMsg **ppMsg) {
-  DBT      key = {0};
-  DBT      value = {0};
-  SMetaDB *pMetaDB = pMeta->pDB;
+int metaGetTableInfo(SMeta *pMeta, char *tbname, STableMetaMsg **ppMsg) {
+  DBT            key = {0};
+  DBT            value = {0};
+  SMetaDB *      pMetaDB = pMeta->pDB;
+  int            ret;
+  STbCfg         tbCfg;
+  SSchemaKey     schemaKey;
+  DBT            key1 = {0};
+  DBT            value1 = {0};
+  uint32_t       ncols;
+  void *         pBuf;
+  int            tlen;
+  STableMetaMsg *pMsg;
 
   key.data = tbname;
   key.size = strlen(tbname) + 1;
 
-  pMetaDB->pNameIdx->get(pMetaDB->pNameIdx, NULL, &key, &value, 0);
+  ret = pMetaDB->pNameIdx->get(pMetaDB->pNameIdx, NULL, &key, &value, 0);
+  if (ret != 0) {
+    // TODO
+    return -1;
+  }
+
+  metaDecodeTbInfo(value.data, &tbCfg);
+
+  switch (tbCfg.type) {
+    case META_SUPER_TABLE:
+      schemaKey.uid = tbCfg.stbCfg.suid;
+      schemaKey.sver = 0;
+
+      key1.data = &schemaKey;
+      key1.size = sizeof(schemaKey);
+
+      ret = pMetaDB->pSchemaDB->get(pMetaDB->pSchemaDB, &key1, &value1, NULL, 0);
+      if (ret != 0) {
+        // TODO
+        return -1;
+      }
+      pBuf = value1.data;
+      pBuf = taosDecodeFixedU32(pBuf, &ncols);
+
+      tlen = sizeof(STableMetaMsg) + (tbCfg.stbCfg.nTagCols + ncols) * sizeof(SSchema);
+      pMsg = calloc(1, tlen);
+      if (pMsg == NULL) {
+        terrno = TSDB_CODE_OUT_OF_MEMORY;
+        return -1;
+      }
+
+      strcpy(pMsg->tbFname, tbCfg.name);
+      pMsg->numOfTags = tbCfg.stbCfg.nTagCols;
+      pMsg->numOfColumns = ncols;
+      pMsg->tableType = tbCfg.type;
+      pMsg->sversion = 0;
+      pMsg->tversion = 0;
+      pMsg->suid = tbCfg.stbCfg.suid;
+      pMsg->tuid = tbCfg.stbCfg.suid;
+      for (size_t i = 0; i < tbCfg.stbCfg.nTagCols; i++) {
+
+      }
+
+      break;
+    case META_CHILD_TABLE:
+      ASSERT(0);
+      break;
+    case META_NORMAL_TABLE:
+      ASSERT(0);
+      break;
+    default:
+      ASSERT(0);
+      break;
+  }
 
-  // TODO: construct the message body
+  *ppMsg = pMsg;
 
   return 0;
 }
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