// 获取 DatetTime 类型的 SQL 片断
protected override string GetSqlValueByDateTime(object value, object dbType, int?precision)
{
// 默认精度为3
string format = "yyyy-MM-dd HH:mm:ss.fff";
SqlDbTypeInfo dbTypeInfo = SqlDbTypeInfo.Create(dbType);
if (dbTypeInfo != null && dbTypeInfo.IsDate)
{
format = "yyyy-MM-dd";
}
else if (dbTypeInfo != null && dbTypeInfo.IsDateTime)
{
format = "yyyy-MM-dd HH:mm:ss.fff";
}
else if (dbTypeInfo != null && dbTypeInfo.IsDateTime2)
{
string pad = string.Empty;
if (precision != null && precision.Value > 0)
{
pad = "f".PadLeft(precision.Value > 7 ? 7 : precision.Value, 'f');
}
if (!string.IsNullOrEmpty(pad))
{
format = string.Format("yyyy-MM-dd HH:mm:ss.{0}", pad);
}
else
{
format = "yyyy-MM-dd HH:mm:ss.fffffff";
}
}
string result = this.EscapeQuote(((DateTime)value).ToString(format), false, false);
return(result);
}
// 获取 String 类型的 SQL 片断
protected override string GetSqlValueByString(object value, object dbType, int?size = null)
{
bool unicode = SqlDbTypeInfo.IsUnicode2(dbType);
string result = this.EscapeQuote(value.ToString(), unicode, true);
return(result);
}
// 增加一个参数
protected override IDbDataParameter AddParameter(object value, object dbType, int?size = null, int?precision = null, int?scale = null, ParameterDirection?direction = null)
{
SqlParameter parameter = (SqlParameter)base.AddParameter(value, dbType, size, precision, scale, direction);
// 补充 DbType
SqlDbTypeInfo dbTypeInfo = SqlDbTypeInfo.Create(dbType);
if (dbTypeInfo != null && dbTypeInfo.DbType != null)
{
parameter.DbType = dbTypeInfo.DbType.Value;
if (dbTypeInfo.DbType.Value == DbType.Time)
{
parameter.SqlDbType = SqlDbType.Time;
}
}
else if (dbTypeInfo != null && dbTypeInfo.SqlDbType != null)
{
parameter.SqlDbType = dbTypeInfo.SqlDbType.Value;
}
if (size != null && (size.Value > 0 || size.Value == -1))
{
parameter.Size = size.Value;
}
if (precision != null && precision.Value > 0)
{
parameter.Precision = (byte)precision.Value;
}
if (scale != null && scale.Value > 0)
{
parameter.Scale = (byte)scale.Value;
}
return(parameter);
}
// 获取 DateTimeOffset 类型的 SQL 片断
protected override string GetSqlValueByDateTimeOffset(object value, object dbType, int?precision)
{
// 默认精度为7
string format = "yyyy-MM-dd HH:mm:ss.fffffff";
SqlDbTypeInfo dbTypeInfo = SqlDbTypeInfo.Create(dbType);
if (dbTypeInfo != null && dbTypeInfo.IsDateTimeOffset)
{
string pad = string.Empty;
if (precision != null && precision.Value > 0)
{
pad = "f".PadLeft(precision.Value > 7 ? 7 : precision.Value, 'f');
}
if (!string.IsNullOrEmpty(pad))
{
format = string.Format("yyyy-MM-dd HH:mm:ss.{0}", pad);
}
}
string date = this.EscapeQuote(((DateTimeOffset)value).DateTime.ToString(format), false, false);
string span = ((DateTimeOffset)value).Offset.ToString(@"hh\:mm");
span = string.Format("{0}{1}", ((DateTimeOffset)value).Offset.Hours >= 0 ? '+' : '-', span);
span = this.EscapeQuote(span, false, false);
string result = string.Format("TODATETIMEOFFSET({0},{1})", date, span);
return(result);
}
/// <summary>
/// 检查是否Unicode数据类型
/// </summary>
public static bool IsUnicode2(object dbType)
{
if (dbType == null)
{
return(true);
}
SqlDbTypeInfo dbTypeInfo = SqlDbTypeInfo.Create(dbType);
return(dbTypeInfo != null ? dbTypeInfo.IsUnicode : true);
}
// 获取 Time 类型的 SQL 片断
protected override string GetSqlValueByTime(object value, object dbType, int?precision)
{
// 默认精度为7
string format = @"hh\:mm\:ss\.fffffff";
SqlDbTypeInfo dbTypeInfo = SqlDbTypeInfo.Create(dbType);
if (dbTypeInfo != null && dbTypeInfo.IsTime)
{
string pad = string.Empty;
if (precision != null && precision.Value > 0)
{
pad = "f".PadLeft(precision.Value > 7 ? 7 : precision.Value, 'f');
}
if (!string.IsNullOrEmpty(pad))
{
format = string.Format(@"hh\:mm\:ss\.{0}", pad);
}
}
string result = this.EscapeQuote(((TimeSpan)value).ToString(format), false, false);
return(result);
}