Article:		Normalizing XML, Part 2
Subject:		possible typo?
Date:		2003-01-27 11:05:18
From:		Joe Hubert
The Housing2.xsd schema includes this snippet within the HousingUnitList element: <key name="UnitIDKey"> <selector xpath="Unit" /> <field xpath="@unitID" /> </key> Should the xpath be "HousingUnit" instead of "Unit"?

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• possible typo?
  2003-01-27 12:30:14 Will Provost
  
  That's correct. In fact, in double-checking this I discovered that there are also some missing namespace prefixes; the result was that the instance document was being incorrectly passed because the field xpath was resolving to an empty set.

  
  The correct lines for the keys and keyref are as follows:

  
  <key name="RealtorKey">
  <selector xpath="h:Realtor" />
  <field xpath="h:contact/h:name" />
  </key>
  </element>
  </sequence>
  </complexType>
  <key name="UnitIDKey">
  <selector xpath="h:HousingUnit" />
  <field xpath="@unitID" />
  </key>
  <keyref name="HousingUnitToRealtor" refer="h:RealtorKey">
  <selector xpath="h:HousingUnit" />
  <field xpath="h:realtor" />
  </keyref>
  </element>
  
  </schema>

  
  Good catch! Thanks.