Class DurationAttribute
Declares that a TimeSpan column stores a duration, and in which unit.
[AttributeUsage(AttributeTargets.Property|AttributeTargets.Field, AllowMultiple = true, Inherited = true)]
public class DurationAttribute : MappingAttribute, _Attribute- Inheritance
-
objectDurationAttribute
- Implements
- Inherited Members
- Extension Methods
Examples
[Column(DataType = DataType.Int64), Duration(DurationUnit.Second)]
public TimeSpan Elapsed { get; set; }Remarks
Without this attribute (or the equivalent fluent or mapping schema configuration) a TimeSpan
column keeps its existing meaning, which is provider-defined and is a time of day rather than a duration on
providers that map TimeSpan to a TIME column. Duration semantics are opt-in precisely so
that existing mappings are not silently reinterpreted.
The unit is what makes translation possible: a BIGINT column alone does not say whether it holds ticks
or seconds, and guessing wrong is a silent factor-of-10000000 error.
Applying this attribute to a class or interface has no effect.
Constructors
DurationAttribute(DurationUnit)
Creates attribute instance.
public DurationAttribute(DurationUnit unit)Parameters
unitDurationUnitUnit in which the duration is stored.
Properties
Unit
Gets or sets the unit in which the duration is stored in the column.
public DurationUnit Unit { get; set; }Property Value
Methods
GetObjectID()
Returns mapping attribute id, based on all attribute options.
public override string GetObjectID()