VN3056REP - Same business logic as View Report for View Cross function from Questionnaire list

Introduction

The current process of "View cross" function in Questionnaire list:

• Create / Rebuild the default data cache of selected questionnaire.
• Check if the data cache has any axises, if yes redirect to a "nearly" cross viewer page, if no, just render an error message.

Disadvantage:

• The data cache is always rebuilt if there is a change in data of questionnaire.
• If the questionnaire template of questionnaire is changed, it is too difficult to re-setup the data cache.

Design decisions

When "View Cross" function of Questionnaire list is clicked:

• If this is the first time that this function is used for selected questionnaire, create a data cache and redirect to cross viewer page.
• If not, use the same business logic as "View Report" function, show the below dialog

• If option 1 is selected, data cache will be re-setup, rebuild, and then show the cross viewer page.
• If option 2 is selected, just show the cross viewer page with the old data cache.

Design detail

• Re-make a new "Regenerate instant cross" dialog as above.
• There are two main processes for this dialog:

• The Page_Load event:

Create default data cache

// QuestionnaireObject is a selected Questionnaire
QuestionnaireCacheSpecification qcsObject = DiagramUtilities.CreateNewDCSByQuestionnaire(QuestionnaireObject);

• The Button Ok clicked event:

Re-setup data cache:

// qcs is a questionnaire cache specification object
var generator = new GenerateInstantReport();
List<DataColumn> datacolumns = qcs.QuestionnaireSelection.GetDataColumns();
generator.RemoveBrTagFromQuestionAndSubQuestion(datacolumns);
qcs.AxisSet = qcs.CreateDefaultAxisSet();
qcs.Save();

Rebuild data cache:

// qcsObject is a questionnaire cache specification object
DataCacheManager.Instance.BuildDCSIfNeeded(qcsObject, true, false);

Document revisions

Version No.	Date	Changed By	Description	Svn revision
0.1	23.03.2010	Trần Nguyễn Thanh Tùng	Technical design	NA