Message-ID: <154163776.16118.1711725003327.JavaMail.appbox@confluence> Subject: Exported From Confluence MIME-Version: 1.0 Content-Type: multipart/related; boundary="----=_Part_16117_1976632664.1711725003326" ------=_Part_16117_1976632664.1711725003326 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Content-Location: file:///C:/exported.html Loading Attribute Values

Loading Attribute Values

You may need to load the same values that Structure shows on the= Structure Board, especially if it's a total value, progress value or other= Structure-specific value. This is done via StructureAttributeSe= rvice.

About Attributes

One of the core concepts in Structure is the Attribute abstraction. An a= ttribute is something that can provide a value of specific type and meaning= for any row in a forest.

For example, a "Summary" attribute would produce the value of Summary fi= eld for issues, the name of a folder for folders and a person's full name f= or users. Some attributes may be applicable only to certain item types and = would provide empty value for all other items.

Besides item-based attributes, which provide values that depend only on = the item in the forest, there are forest-based attributes, which are calcul= ated based on the whole forest and items in it.

Forests and Attributes are two main concepts that make up the Structure = grid. Looking at the Structure Board, you see Forest in the vertical direct= ion =E2=80=93 rows and hierarchy are taken from Forest, and you see Attribu= tes in the horizontal direction =E2=80=93 all columns load Attributes from = the server and display those values.

General Ap= proach to Loading Values

Let's assume that, after Reading Structure Content, you have StructureCompo= nents instance and an instance of ForestSpec = for a forest. We can read a number of attributes for a number of rows by go= ing to StructureAttributeService.


1. Figure out = which Attributes do you need

The service accepts multiple attribute specs in one request. If you need= several attributes calculated =E2=80=93 it's better to do that in one= request.

=20
List<=
;AttributeSpec<?>> attributeSet =3D new ArrayList<>();
attributeSet.add(CoreAttributeSpecs.KEY);
attributeSet.add(CoreAttributeSpecs.SUMMARY);
attributeSet.add(CoreAttributeSpecs.TOTAL_REMAINING_ESTIMATE);
=20

CoreAttributeSpecs class and its parent class, S= haredAttributeSpecs, contain some of the most popular attributes.

It's likely that you'll need to build you own attribute specification. F= or example, to address a numeric JIRA custom field and calculate total of t= hat field based on sub-issues, you'll need the following.

=20
Attribu=
teSpec<Number> customField =3D
  AttributeSpecBuilder.create("customfield", ValueFormat.NUMBER).params().s=
et("fieldId", 10000).build();

AttributeSpec<Number> customFieldTotal =3D
  AttributeSpecBuilder.create(CoreAttributeSpecs.Id.SUM, ValueFormat.NUMBER=
).params().setAttribute(customField).build();

attributeSet.add(customFieldTotal);
=20

2. Figure out which Rows do = you need to calculate the Attributes for

For example, this could be all rows in that structure.

=20
LongLis=
t rows =3D myStructureComponents.getForestService().getForestSource(forestS=
pec).getLatest().getForest().getRows();
=20

If you need to create a LongList manually, use LongAr= ray implementation.

3. Call StructureAttributeService

This service calculates a matrix of values for each row and attribute yo= u specify.

=20
RowValu=
es values =3D myStructureComponents.getAttributeService().getAttributeValue=
s(forestSpec, rows, attributeSet);
=20

There is a variation of getAttributeValues() method that ac= cepts a Forest, rather than ForestSpec. It is rec= ommended to use the variant that accepts ForestSpec whenever p= ossible, because that variant uses caching.

4. Read out the result

The returned object contains values for all pairs of requested row and r= equested attribute.

=20
for (Lo=
ngIterator ii : rows) {
  String key =3D values.get(ii.value(), CoreAttributeSpecs.KEY);
  Number total =3D values.get(ii.value(), customFieldTotal);
  ...
}
=20
------=_Part_16117_1976632664.1711725003326--