com.almworks.jira.structure.api.attribute

Interface RowValues

All Known Subinterfaces:

VersionedRowValues

All Known Implementing Classes:

VersionedRowValues.EmptyVersionedRowValues

@PublicApi
public interface RowValues

An object that implements RowValues interface is supplied as a result of attributes calculation by StructureAttributeService. The interface allows retrieval of values by row ID and attribute specification.

See Also:

VersionedRowValues, StructureAttributeService, AttributeSpec

Method Summary

Modifier and Type	Method and Description
<T> T	get(Long row, AttributeSpec<T> attribute) Returns a value for the given row and attribute.
AttributeTrail	getTrail(AttributeSpec<?> attribute) Returns an object that can be used to implement correct value invalidation, in case the value is cached.

Method Detail

get

@Nullable
<T> T get(@Nullable
                     Long row,
                     @Nullable
                     AttributeSpec<T> attribute)

Returns a value for the given row and attribute.

Type Parameters:

T - value type

Parameters:

row - row ID

attribute - attribute specification

Returns:

value or null if the value is missing

getTrail

@NotNull
AttributeTrail getTrail(AttributeSpec<?> attribute)

Returns an object that can be used to implement correct value invalidation, in case the value is cached.

Parameters:

attribute - attribute that was requested for value calculation

Returns:

the attribute's trail (a trail for non-requested attribute will be empty, but not null)