DbProviderEx SetParameterType(string providerName)
{
if (string.IsNullOrEmpty(providerName))
{
providerName = DefaultProvider;
}
DbProviderEx pex = new DbProviderEx();
pex.ProviderName = providerName.Trim();
switch (pex.ProviderName)
{
case "System.Data.SqlClient":
pex.ParameterType = "@";
pex.ProviderType = DbProviderType.SqlServer;
break;
case "MySql.Data.MySqlClient":
pex.ParameterType = "@";
pex.ProviderType = DbProviderType.MySql;
break;
default:
pex.ParameterType = ":";
pex.ProviderType = DbProviderType.Oracle;
break;
}
return(pex);
}
/// <summary>
///
/// </summary>
/// <param name="typeName"></param>
/// <param name="pex">数据库类型，默认主连接的类型</param>
internal ConditionBuilder(string typeName, DbProviderEx pex = null)
{
m_typeName = typeName;
WhereParam = new List <string>();
if (pex == null)
{
DbProEx = DMHelper.Instance.ProviderEx;
}
else
{
DbProEx = pex;
}
}
