1st Filter

Let's brew our first filter coffee

Do you remember the cadastral parcel number "05430202600946______" I mentioned in introduction? Did you find out, where it is meanwhile?

No?

Ok, let's find it out together!

To do this, we will use the following Filter Expression:

<fes:Filter 
	xmlns:fes="http://www.opengis.net/fes/2.0"
	xmlns:cp="http://inspire.ec.europa.eu/schemas/cp/4.0">
	<fes:PropertyIsEqualTo>
		<fes:ValueReference>cp:nationalCadastralReference</fes:ValueReference>
		<fes:Literal>05430202600946______</fes:Literal>
	</fes:PropertyIsEqualTo>
</fes:Filter>

You recognize the key value pair and the operator?

Key	Value	Operator
cp:nationalCadastralReference	05430202600946______	PropertyIsEqualTo (i.e. "=")

Now open a new blank FME Workbench!

Insert a OGC WFS (Web Feature Service) Reader.

Open [Parameters ...] and paste the following URL:

https://www.wfs.nrw.de/geobasis/wfs_nw_inspire-flurstuecke_alkis?

Select CadastralParcel as [Feature Types].

Delete [Max Features] if set.

Now open the [XML Filter Expression] editor [...] and paste the XML from above.

Close the editor with [OK] and the [Parameters] and [Add Reader] windows also with [OK].

Now [Run Just This] (in Feature Caching mode).

Explore the one feature the WFS returns:

You know where we are?

Ok, that works!

But I'm really sorry to disappoint you!

We have to return to theory again.

Good to know #2

Do you also use ArcGIS Desktop, i.e. ArcMap and ArcCatalog?

If so, you can do the same in ArcGIS Desktop, if Interoperability Connections are installed.

It's because Interop Connections are FME!