新增数据库操作

common/src/main/ets/db/SQLiteContext.ets

+import { Globals } from '../utils/Globals';
+import { Logger } from '../utils/Logger';
+import BaseTable from './BaseTable';
+import { DatabaseImpl } from './DatabaseImpl';
+
+export class SQLiteContext {
+  static init(context) {
+    globalThis.sqliteContext = context;
+  }
+
+
+  /**
+   * 传入数据库表类，获取对应的表对象，进行相应的增删改查操作
+   * @param tableClass
+   */
+  static with<T extends BaseTable<any>>(tableClass: { new(dbName, tableName): T }): T {
+    let dbName = Reflect.getMetadata('Database', tableClass)
+    if (!dbName) {
+      throw new Error('table db is empty')
+    }
+    Logger.info(this, 'dbName=' + dbName)
+    let database = Globals.getOrCreate(dbName, () => {
+      return new DatabaseImpl(dbName);
+    })
+    return database.getTable(tableClass)
+  }
+}
\ No newline at end of file