<!-- bf.uri is a simple way to get to a thing -->
<index type="bf.uri">
- ?thing rdf:type ?any FILTER( ?thing = %u ) </index>
+ ?thing rdf:type ?any FILTER( ?thing = %u )
+ </index>
+ <!-- bf.type is a simple way to search for types -->
+ <!-- for example, a bf.Work can also be bf:Text or bf:Audio -->
+ <index type="bf.type">
+ ?thing a %t
+ </index>
<!-- The BF-L present format is the same for everything -->
<!-- Each db is supposed to provide a dedicated BF-V present format -->
?subject bf:label %v FILTER(contains(%v, %s))
</index>
+ <!-- contentCategory can be searched with complete URIs like -->
+ <!-- http://id.loc.gov/vocabulary/contentTypes/txt -->
+ <index type="bf.contentcategory">
+ ?thing bf:contentCategory %u
+ </index>
<!-- Present formats -->
<!-- BF-L comes from the "thing" template -->
}
</index>
+ <!-- isbn index. The Instance may contain a isbn10 or isbn13. -->
+ <!-- These can be literal values like -->
+ <!-- http://isbn.example.org/1906833214 which we need to search -->
+ <!-- by our usual substring match. Or they can be links to Identivfiers -->
+ <!-- which will have a proper identifierValue on which we can do -->
+ <!-- an exact match -->
+ <index type="bf.isbn">
+ {
+ ?thing bf:isbn10 %v
+ FILTER(contains(str(%v), %s))
+ } UNION {
+ ?thing bf:isbn13 %v
+ FILTER(contains(str(%v), %s))
+ } UNION {
+ {
+ ?thing bf:isbn10 ?isbn
+ } UNION {
+ ?thing bf:isbn13 ?isbn
+ }
+ ?isbn a bf:Identifier .
+ ?isbn bf:identifierValue %v FILTER( %v = %s )
+ }
+ </index>
+
+
<!-- Present formats. BF-L comes from "thing" -->
<!-- Full instance, with the related work too -->
<present type="BF-V">