Information Technology Reference
In-Depth Information
Figure 12-10.
The Yahoo! Pipes editor
On the left side you'll find the series of modules that you can drag into the Pipes UI.
These modules can be connected to perform the operations you want. I'm going to
use three modules—Fetch Site Feed, Union, and Truncate—to bring together the
feeds of three websites, merge them together, and then cut off the output after five
items (Figure 12-11).
1.
Fetch Site Feed takes the URL of the RSS feed for a web site. In this
example, I'm going to take three RSS feeds, for three different websites,
and link them together. You'll notice in Figure 12-11, I have three “Fetch
Site Feed” modules.
2.
Union simply combines up to five inputs into one feed. Here the union is
combining the three feeds that I've entered. If desired, I could have
multiple unions and feed more than five pipes by “union-ing” to a union,
and so forth.
3.
Truncate tells Pipes that I only want five items output. This is useful to
speed up response time, as Pipes only needs to export a few items, and
not the tens or hundreds that multiple feeds may provide. Here it's the
last thing I've connected up before the Pipe's output module.
