Get data
After the XML data is loaded, it is flattened into a tabular format. Inside the data set, the data is actually stored as an array of objects (rows) with properties (columns) and values.
The following example shows data selected with the /gallery/photos/photo XPath, in bold:
<gallery id="12345"> <photographer id="4532">John Doe</photographer> <email>john@doe.com</email> <photos id="2000"> <photo path="sun.jpg" width="16" height="16"/> <photo path="tree.jpg" width="16" height="16"/> <photo path="surf.jpg" width="16" height="16"/> </photos> </gallery>
The data set then flattens the set of nodes into a tabular format, that the following table represents.
|
@path |
@width |
@height |
|---|---|---|
|
sun.jpg |
16 |
16 |
|
tree.jpg |
16 |
16 |
|
surf.jpg |
16 |
16 |
You can get all of the rows in the data set by calling getData(). The data is loaded asynchronously, so you can only access the data after it is loaded. You might need to register an observer to be notified when the data is ready. For more information, see Work with observer notifications.
Use the getData() method to fetch
all the rows in the data set. To get the value of a specific column,
index into the row with the column name.
var dsPhotos = new Spry.Data.XMLDataSet("/photos.php?galleryid=2000", "/gallery/photos/photo");
...
var rows = dsPhotos.getData(); // Get all rows.
var path = rows[0]["@path"]; // Get the data in the "@path" column of the first row.