/// <summary>
/// 构建数据库对象
/// </summary>
/// <param name="server">服务器地址</param>
/// <param name="database">数据库名称</param>
/// <param name="userId">用户名</param>
/// <param name="password">密码</param>
/// <param name="poolSize">连接池连接数</param>
/// <param name="consolePrintSql">是否在控制台输出Sql语句</param>
public DbContext(string server, string database, string userId, string password, int poolSize = 3, bool consolePrintSql = false)
{
if (string.IsNullOrWhiteSpace(server) ||
string.IsNullOrWhiteSpace(database) ||
string.IsNullOrWhiteSpace(userId) ||
string.IsNullOrWhiteSpace(password))
{
throw new ConnectionStringIsEmptyException();
}
if (consolePrintSql)
{
_consolePrintSql = true;
}
if (poolSize <= 0)
{
throw new ConnectionStringIsEmptyException($"连接数最小为一个！");
}
string connectionString = BuildConnectionString(server, database, userId, password);
MySQLConnectionPools.Init(connectionString, poolSize);
_dbSQLHelper = new MySQLHelper(connectionString);
}
public int ExecuteNonQuery(bool isNewConnection, bool consolePrintSql, string commandText, params IDbDataParameter[] parameters)
{
if (string.IsNullOrWhiteSpace(commandText))
{
throw new ArgumentNullException("执行命令不能为空");
}
int result = 0;
if (isNewConnection == true)
{
using (IDbConnection connection = new MySqlConnection(_connectionString))
{
connection.Open();
result = ExecuteNonQuery(connection, consolePrintSql, commandText, parameters);
}
}
else
{
using (IConnector connector = MySQLConnectionPools.GetConnector())
{
result = ExecuteNonQuery(connector.GetConnection(), consolePrintSql, commandText, parameters);
}
}
return(result);
}
public List <T> ExecuteList <T>(bool consolePrintSql, List <PropertyInfo> propertyInfoList, string commandText, params IDbDataParameter[] parameters)
{
if (string.IsNullOrWhiteSpace(commandText))
{
throw new ArgumentNullException("执行命令不能为空");
}
List <T> list = new List <T>();
using (IConnector connector = MySQLConnectionPools.GetConnector())
{
IDbCommand command = connector.GetConnection().CreateCommand();
command.CommandText = commandText;
foreach (IDbDataParameter parameter in parameters)
{
command.Parameters.Add(parameter);
}
PrintSql(consolePrintSql, commandText);
IDataReader reader = command.ExecuteReader(CommandBehavior.CloseConnection);
list = InstanceFactory.CreateListAndDisposeReader <T>(reader, propertyInfoList);
}
return(list);
}
public object ExecuteScalar(bool consolePrintSql, string commandText, params IDbDataParameter[] parameters)
{
if (string.IsNullOrWhiteSpace(commandText))
{
throw new ArgumentNullException("执行命令不能为空");
}
object result = null;
using (IConnector connector = MySQLConnectionPools.GetConnector())
{
using (IDbCommand command = connector.GetConnection().CreateCommand())
{
command.CommandText = commandText;
foreach (IDbDataParameter parameter in parameters)
{
command.Parameters.Add(parameter);
}
PrintSql(consolePrintSql, commandText);
result = command.ExecuteScalar();
}
}
return(result);
}