refactor: TdEngineService 代码清理

iot-platform/src/main/java/com/iot/platform/service/TdEngineService.java

@@ -125,7 +125,7 @@ public class TdEngineService {
         if (name == null || name.isEmpty()) {
             return "`unknown`";
         }
-        return "`" + name.replaceAll("`", "") + "`";
+        return "`" + name.replace("`", "") + "`";
     }
 
     private boolean isValidFieldName(String name) {
@@ -136,18 +136,6 @@ public class TdEngineService {
         return name != null && name.matches(ALLOWED_TABLE_NAME);
     }
 
-    private boolean isNumeric(String str) {
-        if (str == null || str.isEmpty()) {
-            return false;
-        }
-        try {
-            Double.parseDouble(str);
-            return true;
-        } catch (NumberFormatException e) {
-            return false;
-        }
-    }
-
     // === 缓存工具方法 ===
     private String getStableKey(String dbName, String stableName) {
         return dbName + "." + stableName;
@@ -217,6 +205,7 @@ public class TdEngineService {
      * 从数据库加载列类型
      */
     private Map<String, String> loadStableColumnTypesFromDB(String dbName, String stableName) {
+
         Map<String, String> columnTypes = new HashMap<>();
         String sql = String.format("DESCRIBE %s.%s", wrapName(dbName), wrapName(stableName));
         try (Connection conn = getConnection();
@@ -286,8 +275,6 @@ public class TdEngineService {
             return;
         }
 
-//        String superTableName = extractSuperTableName(table);
-
         int batchSize = DEFAULT_BATCH_SIZE;
         for (int i = 0; i < dataList.size(); i += batchSize) {
             List<Map<String, Object>> batch = dataList.subList(i, Math.min(i + batchSize, dataList.size()));
@@ -297,15 +284,11 @@ public class TdEngineService {
         log.info("批量写入成功: {} | 条数: {}", table, dataList.size());
     }
 
-    private String extractSuperTableName(String table) {
-        int idx = table.lastIndexOf('_');
-        return idx > 0 ? table.substring(0, idx) : table;
-    }
-
     /**
      * 收集数据中所有动态列及其类型
      */
     private Map<String, String> collectColumnTypes(List<Map<String, Object>> dataList) {
+
         Map<String, String> columnTypes = new LinkedHashMap<>();
         for (Map<String, Object> data : dataList) {
             if (data == null) {
@@ -327,7 +310,8 @@ public class TdEngineService {
      * 构建批量插入 SQL
      */
     private String buildInsertSql(String dbName, String table, String superTableName,
-                                   Map<String, String> columnTypes, List<Map<String, Object>> dataList) {
+                                  Map<String, String> columnTypes, List<Map<String, Object>> dataList) {
+
         if (columnTypes.isEmpty()) {
             return null;
         }
@@ -365,7 +349,8 @@ public class TdEngineService {
         if (!hasData) {
             return null;
         }
-        log.info("生成的 INSERT SQL | 列类型: {} | SQL 前100字符: {}", columnTypes, sql.toString().substring(0, Math.min(100, sql.toString().length())));
+        log.info("生成的 INSERT SQL | 列类型: {} | SQL 前100字符: {}",
+                columnTypes, sql.substring(0, Math.min(100, sql.toString().length())));
         sql.setLength(sql.length() - 1);
         return sql.toString();
     }
@@ -495,7 +480,7 @@ public class TdEngineService {
     /**
      * 根据 TdEngine 列类型获取创建列的 SQL 类型
      */
-    private String getColumnTypeForDDL(String tdType, String columnName) {
+    private String getColumnTypeForDDL(String tdType) {
         switch (tdType) {
             case "BOOL":
             case "BIGINT":
@@ -586,7 +571,7 @@ public class TdEngineService {
                 }
 
                 if (!existingColumns.contains(col)) {
-                    String ddlType = getColumnTypeForDDL(colType, col);
+                    String ddlType = getColumnTypeForDDL(colType);
                     String alterSql = String.format(
                             "ALTER STABLE %s.%s ADD COLUMN %s %s",
                             wrapName(dbName),