Resource_view based query??

Question

Hello,
I searched the documentation (XML dev guide/XDK). I did not find info about
querying based on resource_view. I tried to expand the query
select extractvalue
value(ct),
'/xs:complexType/@name',
'xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xdb="http://xmlns.oracle.com/xdb"'
) COMPLEX_TYPE,
extractvalue
value(ct),
'/xs:complexType/@xdb:SQLType',
'xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xdb="http://xmlns.oracle.com/xdb"'
) SQL_TYPE
from resource_view,
table
xmlsequence
extract
res,
'/r:Resource/r:Contents/xs:schema/xs:complexType',
'xmlns:r="http://xmlns.oracle.com/xdb/XDBResource.xsd"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xdb="http://xmlns.oracle.com/xdb"'
) ct
where equals_path(res,'/sys/schemas/HL7_KSMITH/PORR_MT040001ALLMax') = 1
Where can I find much info in this area?
What are /@name and /@xdb:SQLType conventions in this query?
Do we able query resource_view based on xs:element, xs:sequence and xs:attribute etc for a registered schema?
Do we able query resource_view for all nodes of a registered schema?
Let me know your thought. I appreciate your help.
Regards
Ram Iyer

Answer 1

Ram
@indicates that the Xpath references an attribute.
Eg in the case of the node
     <xs:complexType name="LineItemType" xdb:SQLType="LINEITEM_T">
          <xs:sequence>
               <xs:element name="Description" type="DescriptionType" xdb:SQLName="DESCRIPTION"/>
               <xs:element name="Part" type="PartType" xdb:SQLName="PART"/>
          </xs:sequence>
          <xs:attribute name="ItemNumber" type="xs:integer" xdb:SQLName="ITEMNUMBER" xdb:SQLType="NUMBER"/>
     </xs:complexType>
@name will return the value LineItemType and @xdb:SQLType will return the value LINEITEM_T
This is basic XML Knowledge.