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98 lines
3.8 KiB
98 lines
3.8 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using FirebirdSql.Data.FirebirdClient;
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namespace FireBirdUtil.SqlUtils
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{
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public static class SQLExecuteUtil_Transaction
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{//TODO:是否增加方法：用FbCommand参数，替代FbConnection参数的方法
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/// <summary>
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/// 在事务中：插入数据
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/// </summary>
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/// <param name="conn">连接.在调用该方法之前，应该已打开</param>
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/// <param name="tr">事务</param>
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/// <param name="tableName">表名</param>
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/// <param name="fieldsValues">一条数据的信息</param>
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public static void Insert(FbConnection conn, FbTransaction tr, string tableName, IDictionary<string, object> fieldsValues)
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{
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var insertSql = SqlUtil.GetInsertSql(tableName, fieldsValues);
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SqlExecuteBaseUtil.ExecuteNonQuery(conn, tr, insertSql);
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}
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/// <summary>
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/// 在事务中：删除符合条件的数据
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/// </summary>
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/// <param name="conn">连接.在调用该方法之前，应该已打开</param>
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/// <param name="tr">事务</param>
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/// <param name="tableName">表名</param>
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/// <param name="conditions">以where打头的条件</param>
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public static void Delete(FbConnection conn, FbTransaction tr, string tableName, string conditions)
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{
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var deleteSql = SqlUtil.GetDeleteSql(tableName, conditions);
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SqlExecuteBaseUtil.ExecuteNonQuery(conn, tr, deleteSql);
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}
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/// <summary>
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/// 在事务中：更新符合条件的数据
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/// </summary>
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/// <param name="conn">连接.在调用该方法之前，应该已打开</param>
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/// <param name="tr">事务</param>
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/// <param name="tableName">表名</param>
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/// <param name="newValues">新值：Key为字段名，Value为新值</param>
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/// <param name="conditions">以where打头的条件</param>
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public static void Update(FbConnection conn, FbTransaction tr, string tableName, Dictionary<string, object> newValues, string conditions)
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{
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var updateSql = SqlUtil.GetUpdateSql(tableName, newValues, conditions);
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SqlExecuteBaseUtil.ExecuteNonQuery(conn, tr, updateSql);
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}
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/// <summary>
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/// 在事务中：如果指定数据库中，不存在指定的表，则根据创建表的参数，创建之
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/// </summary>
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/// <param name="conn">连接.在调用该方法之前，应该已打开</param>
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/// <param name="tr">事务</param>
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/// <param name="tableName">表名</param>
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/// <param name="tableParams">创建表的字段的相关参数信息</param>
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public static void CreateTableIfNotExist(FbConnection conn, FbTransaction tr, string tableName, string tableParams)
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{
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if (IsTableExist(conn, tr, tableName))
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return;
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CreateTable(conn, tr, tableName, tableParams);
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}
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/// <summary>
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/// 在事务中：在指定数据库中，判断表是否存在
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/// </summary>
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/// <param name="conn">连接.在调用该方法之前，应该已打开</param>
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/// <param name="tr">事务</param>
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/// <param name="tableName">表名</param>
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public static bool IsTableExist(FbConnection conn, FbTransaction tr, string tableName)
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{
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return SqlExecuteBaseUtil.ExecuteScalar<bool>(conn, tr, SqlUtil.GetJudgeTableExistSql(tableName), obj => {
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int count = 0;
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if (obj.Equals(null) || obj.Equals(System.DBNull.Value)) {
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count = -1;
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} else {
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count = (int)obj;
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}
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return count > 0;
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});
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}
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/// <summary>
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/// 在事务中：在指定数据库中，创建数据表
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/// </summary>
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/// <param name="conn">连接.在调用该方法之前，应该已打开</param>
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/// <param name="tr">事务</param>
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/// <param name="tableName">表名</param>
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/// <param name="tableParams">创建表的字段的相关参数信息</param>
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public static void CreateTable(FbConnection conn, FbTransaction tr, string tableName, string tableParams)
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{
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string strSQL = SqlUtil.GetCreateTableSql(tableName, tableParams);
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SqlExecuteBaseUtil.ExecuteNonQuery(conn, tr, strSQL);
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}
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}
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}
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