EII — Enterprise Information Integration
Whereas ETL has to do with transferring batches of information from one system to another, EII strives to provide real-time views across multiple sources of data within one or across multiple organizations.
To show how the Stylus Studio® XML Pipeline designer can be used to build EII applications, let consider the following use-case. A company wants to create an internal phone directory combining information from its employees and the summer interns.
To combine this information, we're going to use:
Most of the items on this list were created just by dragging and dropping. The final report was creating using the XML Report tool. And all of these pieces are combined together by dragging from the File Explorer pane onto the XML Pipeline pane, and connecting the dots.
The advantage to the XML Pipeline is that each step may be developed and tested in isolation. This gives you access to the full power of the development tool suite for each technology. You can use either the tool that is best for each job, or the tool you are more comfortable with. And the modular approach means that changes will impact only a small portion of the overall flow.
Stylus Studio® introduces a new concept: the XML Pipeline Debugger.
Just as you can step from XSLT or XQuery right into embedded Java extension functions, you can set breakpoints at nodes in the pipeline and examine the values coming in, and then step right in to the underlying code. Engine-agnostic, multi-lingual, cross-technology debugging is now at your fingertips.
Once you've built your EII XML pipeline, you need to deploy it. You have the option of generating code that can then be deployed as a REST service, as the examples included with the evaluation copy demonstrate.
Enough talk, time to see it in action.
The report itself was very simple; although it's discussed elsewhere, here's a quick sneak-peek at the definition (and notice the little tweak that gets even/odd row coloring).
And this is the resulting log information when run in the pipeline simulator:
Resulting in this for our final EII phone listing application:
Just with a few short pieces of code, we've been able to assemble very different data sources into a coherent picture. We can filter, sort, perform conditional processing, validate, import, export, and of course transform, using a variety of adapters and languages. And we simulate and debug and then deploy.
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The Stylus Studio EII Blog
Interested in learning more about EII and XML? Bookmark the Stylus Studio EII Blog — a free source of EII and XML development news.