Grass Valley Xstudio Vertigo Suite v.4.10 - Manual (Page 263)

9-40 Xstudio User Manual
Linking objects to a data source
Data linking using the poll identifier from a local template variable
A more flexible data descriptor obtains the poll identifier from a local template variable.
Typically, the poll identifier is entered into a control such as a text box. If the control has its
D
ATA T ARGET property set to a local variable such as L:campaignId, whatever is entered
into the control is written to the corresponding local variable.
A data descriptor with a dynamic identifier that is contained in a local variable has the
following form:
Data:Schema:TickerOrSnapshot(L:variable).tableName(columnName, row)
When a template is built using data descriptors of this form, it becomes possible to reuse the
same template for different polls by typing in a different poll identifier in the text box.
Like in the example below, to populate the data table you would first enter a valid C AMPAIGN
ID in the Data Manager and click G O . Next, type in the name of the local variable in place
of the C AMPAIGN ID in the Data Manager. Once this has been done it is possible to drag a
cell from the data table in the Data Manager into the location where it will be used.
In the example above, the D ATA S OURCE property of the text box is set to the following data
descriptor:
Data:SocialMedia:DynPoll(L:campaignId).m_DynPoll(ChoiceName,2).
Field Description
Data
A prefix used in template logic to indicate a data server variable,
as opposed to a control property or constant.
SocialMedia
The schema name. The schema must have been defined in the
Data Manager (see
“Creating a social media data source” on
page 9-30 ).