Recently, I gave several Search presentations, and some of them were focused on Crawled and Managed Properties. In this post, I’m focusing on the User Experience part of this story, especially on the Debugging and Troubleshooting.
As you know, our content might have one (or more) unstructured part(s) and some structured metadata, properties. When we crawl the content, we extract these properties – these are the crawled properties. And based on the crawled properties, we can create managed properties.
Managed Properties in a Nutshell
Managed Properties are controlled and managed by the Search Admins. You can create them mapped to one or more Crawled Properties.
For example, let’s say your company has different content coming from different source systems. Office documents, emails, database entries, etc. stored in SharePoint, File System, Exchange or Lotus Notes mailboxes, Documentum repositories, etc. For each content, there’s someone who created that, right? But the name of this property might be different in the several systems and/or for the several document types. For Office Documents, it might be Author, Created By, Owner, etc. For emails, usually it’s called From.
At this point, we have several different Crawled Properties, used for the same thing: tag the creator of the content. Why not display this in a general way for you, the End User? For example, we can create a Managed Property called ContentAuthor and map each of the Crawled Properties above to this (Author, Created By, Owner, From, etc.). With this, we’ll be able to use this properties in a common way on the UI: display on the Core Results Web Part, use as Refiner, or as a Sorting value in the case of FAST.
(NOTE: Of course, you can use each Crawled Property for more than one Managed Properties.)
On the Search UI
If you check a typical SharePoint Search UI, you can find the Managed Properties in several ways:
1. Refiners – Refiners can be created by the Managed Properties. You can define several refiner types (text, numeric range, date range, etc.) by customizing this Web Part’s Filter Category Definition property. There are several articles and blog posts describing how to do this, one of my favorite one is this one by John Ross.
2. Search Result Properties – The out-of-the-box Search Result Set is something like this:
This UI contains some basic information about your content, but I’ve never seen any environment where it should have not been customized more or less. Like the first screenshot, above. You can include the Managed Properties you want, and you can customize how they are displayed too. For this, you’ll have to edit some XMLs and XSLTs, see below…
3. Property-based Actions – If you can customize the UI of properties on the Core Result Web Part, why not assign some actions to them? For example, a link to a related item. A link to more details. A link to the customer dashboard. Anything that has a (parameterized) URL and has business value to your Search Users…
4. Scopes and Tabs – Search Properties can be used for creating Scopes, and each scope can have its own Tab on the Search UI.
Core Result Web Part – Fetched Properties
If you want to add some managed properties to the Search UI, the first step is adding this property to the Fetched Properties. This field is a bit tricky though:
Edit the Page, open the Core Result Web Part’s properties, and expand the Display Properties. Here, you’ll see the field for Fetched Properties. Take a deep breath, and try to edit it – yes, it’s a single-line, crazy long XML. No, don’t try to copy and paste this with your favorite XML editor, because if you do and break it to lines, tabs, etc. and try to copy back here, you’ll have another “surprise” – this is really a single line text editor control. If you paste a multi-line XML here, you’ll get the first line only…
Instead, copy the content of this to the clipboard and paste to Notepad++ (this is a free text editor tool, and really… this is a Notepad++ :)). It looks like this:
Open the Language menu and select XML. Your XML will still be one-line, but at least, formatted.
Open the Plugins / XML Tools / Pretty Print (XML only – with line breaks) menu, and here you go! Here is your well formatted, “nice” Fetched Properties XML:
So, you can enter your Managed Properties, by using the Column tag:
Ok, you’re done with editing, but as I’ve mentioned, it’s not a good idea to copy this multi-line XML and paste to the Fetched Properties field of the Core Results Web Part. Instead, use the Linarize XML menu of the XML Tools in Notepad++, and your XML will be one loooooooooong line immediately. From this point, it’s really an easy copy-paste again. Do you like it?
NOTES about the Fetched Properties:
- If you enter a property name that doesn’t exist, this error message will be displayed:
- You’ll get the same(!) error if you enter the same property name more than once.
- Also, you’ll get the same error if you enter some invalid property names to the Refinement Panel Web Part!
Debugging the Property Values
Once you’ve entered the proper Managed Property names to the Fetched Property field, technically, you’re ready to use them. But first, you should be able to check their values without too much effort. Matthew McDermott has published a very nice way to do this: use an “empty” XSL on the Core Results Web Part, so that you’ll get the plain XML results. You can find the full description here.
In summary: if you create a Managed Property AND add it to the Fetched Properties, you’re ready to display (and use) it on the Result Set. For debugging the property values, I always create a test page with Matthew’s “empty” XSL, and begin to work with the UI customization only afterwards.