DHISSDE

1
DHIS-SDE

• Standard data entry

2
Routine data?

• Data submitted regularly.
• A list of related data elements (form) and input
  fields.
• E.g.
• All data elements about immunization.
• All data elements about pregnancy and child
  birth.

3
DHIS2 concepts (short)

• Organization Unit A clinic, hospital, etc.
• Period Time period, to- and from-date.
• Data element E.g. Number of child births
• Form A list of related data elements (no
  values!).
• Data value Value for one data element, for one
  organization unit and a specific period. 0
  child births for Clinic Foo, feb. 2005.
• Validation
• Min/max validation.
• Type validation (int, string, bool).

4
Show it!
5
SDE sequence
Enter data
Validate
Save
Fail
Correct
Change min/max
Comment
6
Model-View-Controller (MVC)

• Model Data and data definitions.
• DHIS Java classes Form, Period,
  OrganizationUnit, etc.
• SDE Java classes DataSet, DataSetElement,
  DataSpan-
• Controller Prepares data for views. Handles
  communication between view and model.
• XWork/Webwork
• SDE WebWork action classes GetDataAction,
  ValidateAction, SaveAction etc.
• View Displays data in specific ways.
• Velocity (A lot like JSP.)
• SDE velocity files save.vm, display.vm,
  correctvalue.vm, etc.

7
SDE code challenges

• Need to connect the three aspects, org.unit, form
  and period ? DataSpan.
• Store values conveniently along with data element
  and other info ? DataSet, DataSetElement.
• Simplify contact with Core? ? Dhis2BeanAdapter,
  DataService
• All the JavaScript and IFRAME issues