better sql creation

src/main/java/com/hz6826/clockin/init/DatabaseInit.java

@@ -3,52 +3,192 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
-import java.util.HashMap;
+import java.util.ArrayList;
 import java.util.Scanner;
 
-import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonArray;
+import java.util.Map;
+import java.util.Set;
 
 import com.hz6826.clockin.ClockIn;
-import org.jetbrains.annotations.Nullable;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.DatabaseMetaData;
+import java.sql.Statement;
+
+
+/*
+ * 储存了sql的信息
+ * */
+class SQLPair {
+    public String dataBaseName;
+    public JsonObject sql_tables;  // ???
+
+    public SQLPair(String dataBaseName, JsonObject sql_tables) {
+        this.sql_tables = sql_tables;
+        this.databaseName = databaseName;
+    }
+};
 
 public class DatabaseInit {
 
-    private HashMap<String,String> sql;
+    private SQLPair sql;
+    private Connection connection;
+    private String databaseName;
+
+    /*
+     *   构造器初始化sql表,并根据数据库类型建立表
+     * */
+    public static void DatabaseInit(Connection DBconnection) {
+        DatabaseMetaData metaData = null;
+        try {
+            metaData = DBconnection.getMetaData();
+        } catch (SQLException e) {
+            throw new RuntimeException("get database metadata error");
+        }
 
-    public DatabaseInit(){
-        //读取配置文件
-        Gson gson = new Gson();
+        String dataBaseName = "";
+        try {
+            dataBaseName = metaData.getDatabaseProductName();
+        } catch (SQLException e) {
+            throw new RuntimeException("get database type error");
+        }
+
+
+        JsonArray sql_list = JsonParser.parseString(loadSource("sql/index.sql")).getAsJsonObject().getAsJsonArray();
+
+        if (sql_list.getAsJsonArray().isEmpty()) {
+            throw new RuntimeException("no sql list");
+        }
 
+        boolean databaseExists = false;
 
+        for (JsonElement databaseElm : sql_list) {
+            if (databaseElm.getAsString().equalsIgnoreCase(dataBaseName)) {
+                databaseExists = true;
+                break;
+            }
+        }
 
-        //获取当前数据库的类型
+        if (!databaseExists) {
+            throw new RuntimeException("no sql list");
+        }
 
         //查找是否有匹配的数据库文件
 
+        JsonObject sqlJson = JsonParser.parseString(loadSource("sql" + dataBaseName + "/index.json")).getAsJsonObject().getAsJsonObject();
+        if (!sqlJson.get("sql_name").getAsString().equalsIgnoreCase(dataBaseName)) {
+            throw new RuntimeException("sql name not match,may be the sql is bad");
+        }
+        ;
+
+        JsonObject table_sql_list_array = sqlJson.get("tables").getAsJsonObject();
+
+        this.sql = new sql_list(dataBaseName, table_sql_list_array);
+
         //有则添加
 
         //没有报错
     }
 
-    public boolean createTable(String name){
 
+    public boolean export_data(String path) {
+
+        return true;
+    }
+
+    public boolean import_data(String path) {
+        return true;
+    }
+
+    public boolean createTable(String name) {
+
+        String sql=this.sql.sql_tables.get(name).getAsString();
+        if (sql == null) {
+            return false;
+        }
+        try (Statement statement = this.connection.createStatement()) {
+            statement.executeUpdate(sql);
+
+        } catch (SQLException e) {
+           throw  new RuntimeException("create table error",e);
+        }
         return true;
     }
+
+
     public boolean deleteTable(String name) {
+
         return true;
     }
-    public boolean createAll(String name){
+
+    public boolean createAll(String name) {
+        try{
+            this.connection.setAutoCommit(false);
+
+        }catch (SQLException e){
+            throw  new RuntimeException("can not create Transaction",e);
+        }
+
+        JsonObject jsonObject = this.sql.sql_tables;
+
+        // 获取所有键值对
+        Set<Map.Entry<String, com.google.gson.JsonElement>> entries = jsonObject.entrySet();
+
+        // 遍历并打印所有数据
+
+        String currentKey="";
+        try (Connection conn =  ...) {
+            for (Map.Entry<String, com.google.gson.JsonElement> entry : entries) {
+                currentKey= entry.getKey();
+                String value = entry.getValue().getAsString(); // 根据值的类型选择合适的方法
+                this.createTable(value);
+            }
+            // 提交事务
+            this.connection.commit();
+            this.connection.setAutoCommit(true);
+
+        } catch (SQLException e) {
+            // 回滚事务
+            ClockIn.LOGGER.error("create failed:{}", currentKey);
+            if (this.connection != null) {
+                try {
+                    this.connection.rollback();
+                }
+                catch (SQLException rollback) {
+                    throw  new RuntimeException("rollback error",rollback);
+                }
+            }
+        }finally {
+            if (this.connection != null) {
+                try {
+                    this.connection.setAutoCommit(true);
+                    this.connection.close();
+                } catch (SQLException e) {
+                    ClockIn.LOGGER.error("close connection error",e);
+                }
+            }
+        }
         return true;
     }
-    public boolean deleteAll(){
+
+    public boolean deleteAll() {
         return true;
     }
-    public boolean checkTable(){
+
+    public boolean checkTable() {
         return true;
     }
 
     /**
      * 从资源里加载文件
+     *
      * @param fileName 资源名称
      * @return 资源内容
      */
@@ -63,7 +203,7 @@ private static String loadSource(String fileName) {
                 scanner.useDelimiter("\\A");
                 return scanner.hasNext() ? scanner.next() : "";
             }
-        } catch (IOException e){
+        } catch (IOException e) {
             ClockIn.LOGGER.error("An exception occured when loading source {}! This is technically our fault. Please report it to us!", fileName, e);
         }
         return "";

src/main/resources/sql/create-all/sqlite/index.json → src/main/resources/sql/sqlite/index.json

@@ -5,5 +5,5 @@
     "rewards": "Reward.sql",
     "mails": "Mail.sql",
     "daily_clock_in_records": "DailyClockInRecord.sql"
-  },
+  }
 }