// 获取 String 类型的 SQL 片断
protected override string GetSqlValueByString(object value, object dbType, int?size = null)
{
bool unicode = OracleDbTypeInfo.IsUnicode2(dbType);
string result = this.EscapeQuote(value.ToString(), unicode, true);
return(result);
}
/// <summary>
/// 获取 DatetTime 类型的 SQL 片断
/// </summary>
protected override string GetSqlValueByDateTime(object value, object dbType, int?precision)
{
// 默认精度6
string format = "yyyy-MM-dd HH:mm:ss";
OracleDbTypeInfo dbTypeInfo = OracleDbTypeInfo.Create(dbType);
bool isTimestamp = false;
if (dbTypeInfo != null && (dbTypeInfo.IsDateTime || dbTypeInfo.IsDateTime2))
{
format = "yyyy-MM-dd HH:mm:ss.ffffff";
isTimestamp = true;
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 result = this.EscapeQuote(((DateTime)value).ToString(format), false, false);
result = isTimestamp
? string.Format("TO_TIMESTAMP({0},'yyyy-mm-dd hh24:mi:ss.ff')", result)
: string.Format("TO_DATE({0},'yyyy-mm-dd hh24:mi:ss')", result);
return(result);
}
/// <summary>
/// 检查是否Unicode数据类型
/// </summary>
public static bool IsUnicode2(object dbType)
{
if (dbType == null)
{
return(true);
}
OracleDbTypeInfo dbTypeInfo = OracleDbTypeInfo.Create(dbType);
return(dbTypeInfo != null ? dbTypeInfo.IsUnicode : true);
}
/// <summary>
/// 增加一个参数
/// </summary>
protected override IDbDataParameter AddParameter(object value, object dbType, int?size = null, int?precision = null, int?scale = null, ParameterDirection?direction = null)
{
if (value is bool)
{
value = ((bool)value) ? 1 : 0;
}
else if (value is Guid)
{
value = ((Guid)value).ToByteArray();
dbType = OracleDbType.Raw;
}
//else if (value is DateTimeOffset)
//{
// value = new Oracle.ManagedDataAccess.Types.OracleTimeStampTZ(((DateTimeOffset)value).LocalDateTime, TimeZone.CurrentTimeZone.StandardName);
//}
OracleParameter parameter = (OracleParameter)base.AddParameter(value, dbType, size, precision, scale, direction);
// 补充 DbType
OracleDbTypeInfo dbTypeInfo = OracleDbTypeInfo.Create(dbType);
if (dbTypeInfo != null && dbTypeInfo.DbType != null)
{
parameter.DbType = dbTypeInfo.DbType.Value;
}
else if (dbTypeInfo != null && dbTypeInfo.SqlDbType != null)
{
parameter.OracleDbType = 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);
}
