Annotation Step

Description

The Annotation Stream step helps you refine your data table for the Streamlined Data Refinery by either creating a measure or attribute on column(s) that you specify.

If you want, you can create multiple annotations on the same field; for example, you might want to create an average measure and a sum measure on the same field. You can also create multiple Annotation Streams to modify the same data model.

Job Entry Workflow

The Annotation Stream modifies the default model produced from the Build Model job entry.

Here is an example workflow.

After you are done annotating your data model, you are ready to publish it.

Prerequisites

You must have the Streamlined Data Refinery set up on your system before using this step.

Annotate Stream

These sections describe the different ways that you can create annotations. The annotation type that you create - either Create Measure or Create Attribute - determines which properties are shown in the dialog box to complete that annotation.

Option	Description
Step Name:	Displays the name of the step.
Annotations	Displays a list of fields and annotations.
-Edit	Use to edit a field that you have highlighted from the Field list.
-Delete	Use to delete a field that you have highlighted from the Field list.
Field	Lists the names of the fields selected for annotation.
Model Action	Specifies which model action is being taken: Create Measure or Create Attribute.
Summary	Displays a summary of that specific annotation.
Select Fields	Displays a list of fields to select from.
Help	Provides a link to the Help documentation.
OK	Click OK to finish the annotation and close the window.
Cancel	Click Cancel to discard entries and close the window.

Select Fields to Annotate

This section describes how to use the Select Fields to Annotate dialog box.

Option	Description
Available Fields	Lists the available fields for annotating.
>	Use this button to Add only the selected field(s).
>>	Use this button to Add All available fields.
<	Use this button to Remove only the selected field(s).
<<	Use this button to Remove All selected fields.
Selected Fields	Lists all of the fields selected for annotating.
OK	Click OK to finish the annotation and close the window.
Cancel	Click Cancel to discard entries and close the window.

Annotate Individual Fields

This section describes how to annotate an individual field.

To begin annotating, select and double click on a field in the list of available fields.

Options	Description
Annotate Field	Shows the name of the field to be annotated.
Actions:	Select an annotation type from the drop down: either Create Measure or Create Attribute.

Create Measure on a Column

Creates a measure or calculated measure using a field of existing measures.

Options	Description
Name - Value	Displays the name of the annotation component. Click in the Value column next to the item that you want to work with.
Measure Name	Type a name for your annotation.
Aggregation Type	Choose from a list of aggregation types: SUM, AVERAGE, COUNT, COUNT_DISTINCT, MINIMUM, MAXIMUM.
Format String	Choose from a list of Format Strings.
Description	Enter a description for the annotation.
Help	Provides a link to the Help documentation.
Previous	Scrolls back through the list of created annotations on the model.
Next	Scrolls forward through a list of created annotations on the model.
OK	Click OK to finish the annotation and close the window.
Cancel	Click Cancel to discard entries and close the window.

Create Attribute

Creates a single level hierarchy, using a field or existing hierarchy level.

Options	Description
Name - Value	Displays the name of the annotation component. Click in the Value column next to the item that you want to work with.
Attribute Name	Type a name for your annotation.
Time Level Type	Choose a Time Level Type from the drop down menu.
Time Source Format	Choose the format that you want the attribute to appear in.
Ordinal Field	Refers to the field used to sort the members.
Description	Enter a description for the annotation.
Parent Attribute	Populated with fields that have been previously annotated within the same dimension/hierarchy.
Dimension	Choose an existing dimension or create a new dimension for the attribute.
Hierarchy	Choose an existing hierarchy or create a new hierarchy for the attribute.
Is Unique	Select either True or False.

Example/Sample(s)

Information about working with the Streamlined Data Refinery, and other general information related to PDI, is located in the Pentaho Documentation.

You can download a set of SDR sample files from our folder on Box.

Pentaho Data Integration