Grass Valley Xstudio Vertigo Suite v.4.10 - Manual (Page 261)

9-38 Xstudio User Manual
Linking objects to a data source
The following sections describe how to use specific types of data descriptors to link social
media data source to template controls or to an Action or Event:
•
“Data linking using a basic data descriptor” on page 9-38
• “Data linking using a Dynamic identifier” on page 9-38
• “Data linking using the poll identifier from a local template variable” on page 9-40
• “Using Dynamic rows” on page 9-41
Data linking using a basic data descriptor
If the snapshot or ticker was configured with a specific message stream or poll identifier (no
dynamic identifier), dragging a cell from the data table in the Data Manager to the property
of a control or the parameter of an Action or Event creates a basic descriptor in the following
form: Data:Schema:TickerOrSnapshot(columnName, row)
For example, dragging from the U SER N AME cell from the first row of the table to the
D ATA S OURCE property of a text box results in the following data descriptor:
Data:SocialMedia:MR_Messages(UserName,1)
Data linking using a Dynamic identifier
When a ticker or snapshot uses a dynamic identifier (see page 9-32 ), the identifier must first
be entered in the Data Manager to populate the data table. Once the table is populated, then
you can drag from a cell in the data table to the property of a control or to parameter of an
Action or Event. A data descriptor with a dynamic identifier has the following form:
Data:Schema:TickerOrSnapshot(dynamicIdentifer).tableName(columnName,
row)
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 ).
MR_Messages
The name of a ticker in the specified schema. The ticker must
have been defined in the Data Manager (see
“Creating a
snapshot or ticker for social media content” on page 9-31 ).
UserName
The U SER N AME column of the data table.
1
The first row of the data table.