Alexandro Colorado wrote:
Is it possible to make a live spreadsheet, meaning that the content of
the cells are provided by a live XML feed from an APi. The idea is to
have stock charts/currency exchange/ and/or pricing of products directly
inserted into a Calc spreadsheet and users can add calculation to this
live objects such as graph a yield or update their price to their local
currency automatically.
Internet -- XML Feed --- OOoMacro -- Live Spread Sheet
My first question will be if the XML can be register as a DataSource,
which protocol to use so OOo can identify it as a datasource, second
will be how to use the XML parser that OOo includes (SAX?) from the
Macro API and finally can this connection be mantain as permanent or
should it be required every x seconds.
You can make an XSLT transformation from your source format to
OpenDocument spreadsheet format, and then use "Insert / Link to External
Data" to create a link into a spreadsheet. The source file can be at an
http location. Update of the data can't be triggered from the outside,
but you can specify an interval at which the link is refreshed.
Or you can write a component that uses any means to parse the data and
get notified of updates, and implements an add-in function with volatile
results to get the value into the spreadsheet. See the service
description of com.sun.star.sheet.AddIn for details on this.
You could also write a database driver, but for use in spreadsheets,
this doesn't seem to add any advantage.
Niklas
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