X-Git-Url: http://git.indexdata.com/?p=mp-sparql-moved-to-github.git;a=blobdiff_plain;f=bibframe%2Ftriplestore.xml;h=12af0ddd0b5b860ba919f9966f80fa47ab7ac892;hp=3f7d34ce8a1fb20efb4bbcd320602455f7b4edb3;hb=62b3dd7a591f31846e92bb74f4a99b436fae1f1f;hpb=4ac3a5c367f8a1ccf102cd2a053370f51b735bb6

diff --git a/bibframe/triplestore.xml b/bibframe/triplestore.xml
index 3f7d34c..12af0dd 100644
--- a/bibframe/triplestore.xml
+++ b/bibframe/triplestore.xml
@@ -1,200 +1,621 @@
+<?xml version="1.0"?>
+
+<!-- 
+Mp-sparql example configuration
+
+This config file snippet is typically included from the main Metaproxy
+configuration. It sets up a simple chain that consists of the sparql 
+filter to translate the queries etc, and a http_client filter that is used
+to do the actual communication to the triple store.
+
+This config provides quite many databases, one for each major type of
+records. The most important are "work" and "instance". These have a great
+number of indexes.  There is a number of "small" databases like "person",
+"meeting" and "topic". These have one main index, named after the database
+name, for example "bf.person".  The "node" database can search for any node
+in the database, and "info" returns simple information about available
+databases.
+
+There are other databases defined in this file, but they are only used 
+internally, to be included in the real database definitions. All real,
+searchable databases have
+  schema="sparql-results"
+in the db tag, whereas those for include use only do not.
+
+All databases support the BF-L ("Link") schema, which returns the triples 
+of the nodes found in the database, without expanding anything. Most of them 
+also support BF-V ("Verbose") schema that expands those links to return a set
+of triples that is more or less self contained. A work, its instances, titles
+for all of them, authors, and their names, etc.
+
+
+
+
+-->
+
 <filters  xmlns="http://indexdata.com/metaproxy">
-  <filter type="sparql">
-      <!-- Which sparql server to use, our demo, or your local installation -->
-    <!--defaults uri="http://bibframe.indexdata.com/sparql/"/-->
-    <defaults uri="http://localhost:8890/sparql/"/>
-    <db path="work" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT
-              ?work
-              (sql:GROUP_DIGEST (?wtitle, ' ; ', 1000, 1)) AS ?title
-              (sql:GROUP_DIGEST (?creatorlabel, ' ; ', 1000, 1))AS ?creator
-              (sql:GROUP_DIGEST (?subjectlabel, ' ; ', 1000, 1))AS ?subject
-      </form>
-      <criteria>?work a bf:Work</criteria>
-
-      <criteria> OPTIONAL {
-          ?work bf:workTitle ?wt .
-          ?wt bf:titleValue ?wtitle }
-      </criteria>
-      <criteria> OPTIONAL {
-          ?work bf:creator ?creator .
-          ?creator bf:label ?creatorlabel }
-      </criteria>
-      <criteria>OPTIONAL {
-          ?work bf:subject ?subject .
-          ?subject bf:label ?subjectlabel }
-      </criteria>
-      <index type="4">?wt bf:titleValue %v FILTER(contains(%v, %s))</index>
-      <index type="1003">?creator bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="21">?subject bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="1016"> {
-            ?work ?op1 ?child .
-            ?child ?op2 %v FILTER(contains(STR(%v), %s))
-          }
-      </index>
-      <modifier>GROUP BY $work</modifier>
-    </db>
-    <db path="works" schema="rdf">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>CONSTRUCT { 
-          ?work bf:title ?wtitle . 
-          ?work bf:instanceTitle ?title .
-          ?work bf:author ?creator . 
-          ?work bf:subject ?subjectlabel }
-      </form>
-      <criteria>?work a bf:Work</criteria>
-
-      <criteria>?work bf:workTitle ?wt</criteria>
-      <criteria>?wt bf:titleValue ?wtitle</criteria>
-      <index type="4">?wt bf:titleValue %v FILTER(contains(%v, %s))</index>
-      <criteria>?work bf:creator ?creator</criteria>
-      <criteria>?creator bf:label ?creatorlabel</criteria>
-      <index type="1003">?creator bf:label %v FILTER(contains(%v, %s))</index>
-      <criteria>?work bf:subject ?subject</criteria>
-      <criteria>?subject bf:label ?subjectlabel</criteria>
-      <index type="21">?subject bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="instance" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT ?instance ?title ?format</form>
-      <criteria>?instance a bf:Instance</criteria>
-
-      <criteria>?instance bf:title ?title</criteria>
-      <index type="4">?instance bf:title %v FILTER(contains(%v, %s))</index>
-      <criteria>?instance bf:format ?format</criteria>
-      <index type="1013">?instance bf:format %s</index>
-    </db>
-    <db path="place" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT DISTINCT  ?label ?id ?place ?relatedTo ?authorizedAccessPoint </form>
-      <criteria>?place a bf:Place</criteria>
-      <criteria>?place bf:label ?label</criteria>
-      <criteria>OPTIONAL { ?place bf:identifier ?id}</criteria>
-      <criteria>OPTIONAL { ?place bf:relatedTo ?relatedTo}</criteria>
-      <criteria>OPTIONAL { ?place bf:authorizedAccessPoint ?authorizedAccessPoint}</criteria>
-      <index type="bf.place">?place bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="any">?place bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="person" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT DISTINCT  ?label ?id ?person ?relatedTo ?authorizedAccessPoint </form>
-      <criteria>?person a bf:Person</criteria>
-      <criteria>?person bf:label ?label</criteria>
-      <criteria>OPTIONAL { ?person bf:identifier ?id}</criteria>
-      <criteria>OPTIONAL { ?person bf:relatedTo ?relatedTo}</criteria>
-      <criteria>OPTIONAL { ?person bf:authorizedAccessPoint ?authorizedAccessPoint}</criteria>
-      <index type="bf.person">?person bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="any">?person bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="meeting" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT DISTINCT  ?label ?id ?meeting ?relatedTo ?authorizedAccessPoint </form>
-      <criteria>?meeting a bf:Meeting</criteria>
-      <criteria>?meeting bf:label ?label</criteria>
-      <criteria>OPTIONAL { ?meeting bf:identifier ?id}</criteria>
-      <criteria>OPTIONAL { ?meeting bf:relatedTo ?relatedTo}</criteria>
-      <criteria>OPTIONAL { ?meeting bf:authorizedAccessPoint ?authorizedAccessPoint}</criteria>
-      <index type="bf.meeting">?meeting bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="any">?meeting bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="agent" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT DISTINCT  ?label ?id ?agent ?relatedTo ?authorizedAccessPoint </form>
-      <criteria>?agent a bf:Agent</criteria>
-      <criteria>?agent bf:label ?label</criteria>
-      <criteria>OPTIONAL { ?agent bf:identifier ?id}</criteria>
-      <criteria>OPTIONAL { ?agent bf:relatedTo ?relatedTo}</criteria>
-      <criteria>OPTIONAL { ?agent bf:authorizedAccessPoint ?authorizedAccessPoint}</criteria>
-      <index type="bf.agent">?agent bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="any">?agent bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="event" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT DISTINCT  ?label ?id ?event ?relatedTo ?authorizedAccessPoint </form>
-      <criteria>?event a bf:Event</criteria>
-      <criteria>?event bf:label ?label</criteria>
-      <criteria>OPTIONAL { ?event bf:identifier ?id}</criteria>
-      <criteria>OPTIONAL { ?event bf:relatedTo ?relatedTo}</criteria>
-      <criteria>OPTIONAL { ?event bf:authorizedAccessPoint ?authorizedAccessPoint}</criteria>
-      <index type="bf.event">?event bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="any">?event bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="organization" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT DISTINCT  ?label ?id ?organization ?relatedTo ?authorizedAccessPoint </form>
-      <criteria>?organization a bf:Organization</criteria>
-      <criteria>?organization bf:label ?label</criteria>
-      <criteria>OPTIONAL { ?organization bf:identifier ?id}</criteria>
-      <criteria>OPTIONAL { ?organization bf:relatedTo ?relatedTo}</criteria>
-      <criteria>OPTIONAL { ?organization bf:authorizedAccessPoint ?authorizedAccessPoint}</criteria>
-      <index type="bf.organization">?organization bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="any">?organization bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="topic" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT DISTINCT  ?label ?id ?topic ?relatedTo ?authorizedAccessPoint </form>
-      <criteria>?topic a bf:Topic</criteria>
-      <criteria>?topic bf:label ?label</criteria>
-      <criteria>OPTIONAL { ?topic bf:identifier ?id}</criteria>
-      <criteria>OPTIONAL { ?topic bf:relatedTo ?relatedTo}</criteria>
-      <criteria>OPTIONAL { ?topic bf:authorizedAccessPoint ?authorizedAccessPoint}</criteria>
-      <index type="bf.topic">?topic bf:label %v FILTER(contains(%v, %s))</index>
-      <index type="any">?topic bf:label %v FILTER(contains(%v, %s))</index>
-    </db>
-    <db path="title" schema="sparql-results">
-        <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-        <prefix>bf: http://bibframe.org/vocab/</prefix>
-        <form>SELECT DISTINCT ?title ?titleValue 
-            ?formDesignation ?partNumber ?partTitle ?subtitle 
-            ?titleAttribute ?titleQualifier ?titleSource 
-            ?titleType ?titleVariationDate</form>
-        <criteria>?title a bf:Title</criteria>
-        <criteria>OPTIONAL { ?title bf:titleValue ?titleValue}</criteria>
-        <criteria>OPTIONAL { ?title bf:formDesignation ?formDesignation}</criteria>
-        <criteria>OPTIONAL { ?title bf:partNumber ?partNumber}</criteria>
-        <criteria>OPTIONAL { ?title bf:partTitle ?partTitle}</criteria>
-        <criteria>OPTIONAL { ?title bf:subtitle ?subtitle}</criteria>
-        <criteria>OPTIONAL { ?title bf:titleAttribute ?titleAttribute}</criteria>
-        <criteria>OPTIONAL { ?title bf:titleQualifier ?titleQualifier}</criteria>
-        <criteria>OPTIONAL { ?title bf:titleSource ?titleSource}</criteria>
-        <criteria>OPTIONAL { ?title bf:titleType ?titleType}</criteria>
-        <criteria>OPTIONAL { ?title bf:titleVariationDate ?titleVariationDate}</criteria>
-        <index type="bf.title">?title bf:titleValue %v FILTER(contains(%v, %s))</index>
-        <index type="bf.subtitle">?title bf:subtitle %v FILTER(contains(%v, %s))</index>
-        <index type="bf.parttitle">?title bf:partTitle %v FILTER(contains(%v, %s))</index>
-        <index type="any">?title ?rel  %v FILTER(contains(str(%v), %s))</index>
-    </db>
-    <!-- A hack to be able to look at any triplet in the base -->
-    <db path="node" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT ?node ?rel ?obj</form>
-      <index type="any">?node ?rel ?obj FILTER( str(?node) = %s )</index>
-    </db>
-    <!-- A way to see which triplets refers to a given uri. -->
-    <db path="ref" schema="sparql-results">
-      <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
-      <prefix>bf: http://bibframe.org/vocab/</prefix>
-      <form>SELECT ?node ?rel ?obj</form>
-      <index type="any">?node ?rel ?obj FILTER( str(?obj) = %s )</index>
-    </db>
-  </filter>
-  <filter type="log">
-    <message>http</message>
-    <category apdu="true"/>
-  </filter>
-  <filter type="http_client">
-    <x-forwarded-for>true</x-forwarded-for>
-  </filter>
+    <filter type="sparql">
+
+        <!-- Which sparql server to use, our demo, or your local installation -->
+        <!--defaults uri="http://bibframe.indexdata.com/sparql/"/-->
+        <defaults uri="http://localhost:8890/sparql/"/>
+
+        <!-- "thing" database that will be included all real databases -->
+        <db path="thing">  <!-- no schema, so it is not directly searchable -->
+            <prefix>rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns</prefix>
+            <prefix>bf: http://bibframe.org/vocab/</prefix>
+            <form>SELECT DISTINCT ?thing </form>
+
+            <!-- Common indexes -->
+
+            <!-- bf.uri is a simple way to get to a thing -->
+            <index type="bf.uri">
+                ?thing  %v_rel %v_obj 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>
+
+            <!-- Find all nodes that refer to the given uri -->
+            <!-- useful after finding uris in the "small" bases -->
+            <!-- direct references only -->
+            <index type="bf.ref">
+                ?thing %v_rel %u
+            </index>
+
+
+            <!-- The BF-L present format is the same for everything -->
+            <!-- Each db is supposed to provide a dedicated BF-V present format -->
+            <present type="BF-L">
+                CONSTRUCT {
+                    %u ?rel ?subj
+                }
+                WHERE {
+                    %u ?rel ?subj .
+                }
+            </present>
+
+        </db>
+
+        <!-- "smallindex" db that will be included in work and instance -->
+        <!-- It provides the small indexes like bf.person, bf.place, etc -->
+        <!-- These match a person, etc, no matter what the relation to that -->
+        <!-- is, as long as there is a direct link -->
+        <!-- The %v gets assigned a new variable name, like ?v0. -->
+        <!-- The %vx gets the same ?v0, with the x suffixed to it, by regular -->
+        <!-- This way, we use a different variable for each index clause, and -->
+        <!-- do not get into trouble if we have an AND between two of the same kind -->
+        <db path="smallindex">
+            <index type="bf.person">
+                ?thing ?rel %vx .
+                %vx a bf:Person .
+                %vx bf:label %v FILTER(contains(%v, %s))
+            </index>
+            <index type="bf.topic">
+                ?thing ?rel %vx .
+                %vx a bf:Topic .
+                %vx bf:label %v FILTER(contains(%v, %s))
+            </index>
+            <index type="bf.place">
+                ?thing ?rel %vx .
+                %vx a bf:Place .
+                %vx bf:label %v FILTER(contains(%v, %s))
+            </index>
+            <index type="bf.agent">
+                ?thing ?rel %vx .
+                %vx a bf:Agent .
+                %vx bf:label %v FILTER(contains(%v, %s))
+            </index>
+            <index type="bf.meeting">
+                ?thing ?rel %vx .
+                %vx a bf:Meeting .
+                %vx bf:label %v FILTER(contains(%v, %s))
+            </index>
+            <index type="bf.organization">
+                ?thing ?rel %vx .
+                %vx a bf:Organization .
+                %vx bf:label %v FILTER(contains(%v, %s))
+            </index>
+            <index type="bf.event">
+                ?thing ?rel %vx .
+                %vx a bf:Event .
+                %vx bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <!-- work database -->
+
+        <db path="work" schema="sparql-results" include="thing smallindex">
+
+            <!-- The search clause just finds ?things, present is done below -->
+            <criteria>?thing a bf:Work</criteria>
+
+            <!-- Title indexes -->
+            <!-- These are messy, there are so many ways to get to a title -->
+
+            <!-- Main title. Looks logical, but in practice we have not seen -->
+            <!-- many of these -->
+            <index type="bf.title">
+                    ?thing bf:title %v FILTER(contains(%v, %s))
+            </index>
+
+            <!-- worktitle.titleValue seems to be the most common way to -->
+            <!-- store the title of a work -->
+            <index type="bf.worktitle">
+                ?thing bf:workTitle %v_wt .
+                %v_wt bf:titleValue %v FILTER(contains(%v, %s))
+            </index>
+
+            <!-- Combining the two above, since users are not likely -->
+            <!-- to know how a given title has been indexed -->
+            <!-- TODO is "maintitle" a good name for this? I made it up myself -->
+            <index type="bf.maintitle">
+                {
+                    ?thing bf:workTitle %v_wt .
+                    %v_wt bf:titleValue %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:title %v FILTER(contains(%v, %s))
+                }
+            </index>
+
+            <!-- the worktitle can also contain a subtitle and a parttitle -->
+            <index type="bf.subtitle">
+                ?thing bf:workTitle %v_wt .
+                %v_wt bf:subtitle %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.parttitle">
+                ?thing bf:workTitle %v_wt .
+                %v_wt bf:partTitle %v FILTER(contains(%v, %s))
+            </index>
+
+            <!-- work.titlevariation - this could also have sub- and partTitles -->
+            <index type="bf.titlevariation">
+                ?thing bf:titleVariation %v_tv .
+                %v_tv bf:titleValue %v FILTER(contains(%v, %s))
+            </index>
+
+            <!-- Instance titles -->
+            <index type="bf.instancetitle">
+                %v_inst bf:instanceOf ?thing .
+                %v_inst bf:instanceTitle %v_tit .
+                %v_tit bf:titleValue %v FILTER(contains(%v, %s))
+            </index>
+
+            <!-- Combined title index. There are so many ways titles can be expresses
+            in Bibframe, this seems to cover most of what we have seen -->
+            <index type="bf.anytitle">
+                {
+                    ?thing bf:title %v FILTER(contains(%v, %s))
+                } UNION { <!-- any kind of link -->
+                    ?thing ?titlerel %v_ti . <!-- mostly workTitle, but others too -->
+                    %v_ti a bf:Title <!-- to something that is a title -->
+                    {
+                        %v_ti bf:titleValue %v FILTER(contains(%v, %s))
+                    } UNION {
+                        %v_ti bf:partTitle %v FILTER(contains(%v, %s))
+                    } UNION {
+                        %v_ti bf:subtitle %v FILTER(contains(%v, %s))
+                    }
+                } UNION {
+                    %v_inst bf:instanceOf ?thing .
+                    %v_inst bf:instanceTitle %v_ti .
+                    %v_ti bf:titleValue %v FILTER(contains(%v, %s))
+                }
+            </index>
+
+            <!-- Author indexes. Much simpler than titles. -->
+            <index type="bf.creator">
+                ?thing bf:creator %v_c .
+                %v_c bf:label %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.contributor">
+                ?thing bf:contributor %v_c .
+                %v_c bf:label %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.anyauthor"> <!-- TODO - Is this a good name? -->
+                {
+                    ?thing bf:creator %v_c .
+                    %v_c bf:label %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:contributor %v_c .
+                    %v_c bf:label %v FILTER(contains(%v, %s))
+                }
+            </index>
+
+            <!-- Subjects -->
+            <!-- Note that these refer to anything with a bf:subject relation -->
+            <!-- The actual item is likely to be something like topic person etc -->
+            <index type="bf.subject">
+                ?thing bf:subject %v_su .
+                %v_su 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>
+
+            <!-- Find the work that has a given Instance -->
+            <index type="bf.instance">
+                %v_inst bf:instanceOf ?thing FILTER ( %v_inst = %u)
+            </index>
+
+            <!-- Present formats -->
+            <!-- BF-L comes from the "thing" template -->
+            <!-- BF-V expands all links, even to instances but not other works -->
+            <present type="BF-V">
+                CONSTRUCT {
+                    %u ?wrel1 ?wobj1 .
+                    ?wobj1 ?wrel2 ?wobj2 .
+                    ?wobj2 ?wrel3 ?wobj3 .
+                    ?inst ?irel1 ?iobj1 .
+                    ?iobj1 ?irel2 ?iobj2 .
+                    ?iobj2 ?irel3 ?iobj3
+                }
+                WHERE {
+                    %u a bf:Work .
+                    %u ?wrel1 ?wobj1 .
+
+                    OPTIONAL {
+                        ?wobj1 ?wrel2 ?wobj2
+                            MINUS { ?wobj1 a bf:Work }
+                            MINUS { ?wobj1 a bf:Instance }
+                        OPTIONAL {
+                            ?wobj2 ?wrel3 ?wobj3
+                                MINUS { ?wobj2 a bf:Work }
+                                MINUS { ?wobj2 a bf:Instance }
+                        }
+                    }
+                    <!-- Link to the instance(s) -->
+                    OPTIONAL {
+                        ?inst bf:instanceOf %u .
+                        ?inst ?irel1 ?iobj1
+                        OPTIONAL {
+                            ?iobj1 ?irel2 ?iobj2
+                                MINUS { ?iobj1 a bf:Work }
+                                MINUS { ?iobj1 a bf:Instance }
+                            OPTIONAL {
+                                ?iobj2 ?irel3 ?iobj3
+                                    MINUS { ?iobj2 a bf:Work }
+                                    MINUS { ?iobj2 a bf:Instance }
+                            }
+                        }
+                    }
+                }
+            </present>
+        </db>
+
+        <!-- Instance database -->
+
+        <db path="instance" schema="sparql-results" include="thing smallindex">
+            <criteria>?thing a bf:Instance</criteria>
+
+            <!-- Title indexes -->
+            <!-- These are messy, there are so many ways to get to a title -->
+
+            <!-- Main title. Looks logical. Many instances seem to have a title -->
+            <index type="bf.title">
+                ?thing bf:title %v FILTER(contains(%v, %s))
+            </index>
+
+            <!-- instancetitle is also pretty common -->
+            <index type="bf.instancetitle">
+                ?thing bf:instanceTitle %v_it .
+                %v_it bf:titleValue %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.titlestatement">
+                ?thing bf:titleStatement %v FILTER(contains(%v, %s))
+            </index>
+
+            <!-- Combining the two above, since users are not likely to know how
+            a given title has been indexed -->
+            <index type="bf.maintitle">
+                {
+                    ?thing bf:instanceTitle %v_it .
+                    %v_it bf:titleValue %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:title %v FILTER(contains(%v, %s))
+                }
+            </index>
+
+
+            <!-- the instancetitle can also contain a subtitle and a parttitle -->
+            <index type="bf.subtitle">
+                ?thing bf:instanceTitle %v_it .
+                %v_it bf:subtitle %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.parttitle">
+                ?thing bf:instanceTitle %v_it .
+                %v_it bf:partTitle %v FILTER(contains(%v, %s))
+            </index>
+            <!-- We could also go to the works, and get those titles... -->
+
+            <!-- Combining any kind of title into one index -->
+            <index type="bf.anytitle">
+                {
+                    ?thing bf:title %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:titleStatement %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing ?titlerel %v_it . <!-- any kind of link -->
+                    %v_it a bf:Title <!-- to something that is a title -->
+                    {
+                        %v_it bf:titleValue %v FILTER(contains(%v, %s))
+                    } UNION {
+                        %v_it bf:partTitle %v FILTER(contains(%v, %s))
+                    } UNION {
+                        %v_it bf:subtitle %v FILTER(contains(%v, %s))
+                    }
+                }
+            </index>
+
+            <!-- Author indexes. Many instances don't have any, works do -->
+            <index type="bf.creator">
+                ?thing bf:creator %v_cr .
+                %v_cr bf:label %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.workcreator">
+                ?thing bf:instanceOf %v_work .
+                %v_work bf:creator %v_cr .
+                %v_cr bf:label %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.workcontributor">
+                ?thing bf:instanceOf %v_work .
+                %v_work bf:contributor %v_co .
+                %v_co bf:label %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.contributor">
+                ?thing bf:contributor %v_co .
+                %v_co bf:label %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.anyauthor">
+                {
+                    ?thing bf:creator %v_cr .
+                    %v_cr bf:label %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:contributor %v_co .
+                    %v_co bf:label %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:instanceOf %v_work .
+                    %v_work bf:creator %v_wcr .
+                    %v_wcr bf:label %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:instanceOf %v_work .
+                    %v_work bf:contributor %v_wco .
+                    %v_wco bf:label %v FILTER(contains(%v, %s))
+                }
+            </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(isUri(%v) &amp;&amp; contains(str(%v), %s))
+                } UNION {
+                    ?thing bf:isbn13  %v
+                        FILTER(isUri(%v) &amp;&amp; contains(str(%v), %s))
+                } UNION {
+                    {
+                        ?thing bf:isbn10 %v_isbn
+                    } UNION {
+                        ?thing bf:isbn13 %v_isbn
+                    }
+                    %v_isbn a bf:Identifier  .
+                    %v_isbn bf:identifierValue  %v FILTER( %v = %s )
+                }
+            </index>
+
+            <!-- lccn number, a simpler index for id numbers -->
+            <index type="bf.lccn">
+                ?thing bf:lccn %v_lccn .
+                %v_lccn a bf:Identifier  .
+                %v_lccn bf:identifierValue  %v FILTER( %v = %s )
+            </index>
+
+            <!-- Find the instances of a given work -->
+            <index type="bf.work">
+                ?thing bf:instanceOf %u
+            </index>
+
+
+            <!-- Present formats. BF-L comes from "thing" -->
+            <!-- Full instance, with the related work too -->
+            <present type="BF-V">
+                CONSTRUCT {
+                    %u ?irel1 ?iobj1 .
+                    ?iobj1 ?irel2 ?iobj2 .
+                    ?iobj2 ?irel3 ?iobj3 .
+                    ?work ?wrel1 ?wobj1 .
+                    ?wobj1 ?wrel2 ?wobj2 .
+                    ?wobj2 ?wrel3 ?wobj3
+                }
+                WHERE {
+                    %u a bf:Instance .
+                    %u ?irel1 ?iobj1 .
+                    OPTIONAL {
+                        ?iobj1 ?irel2 ?iobj2
+                            MINUS { ?iobj2 a bf:Work }
+                            MINUS { ?iobj2 a bf:Instance } .
+                        OPTIONAL {
+                            ?iobj2 ?irel3 ?iobj3
+                                MINUS { ?iobj3 a bf:Work }
+                                MINUS { ?iobj3 a bf:Instance }
+                        }
+                    }
+                    OPTIONAL { <!-- Work -->
+                        %u bf:instanceOf ?work .
+                        ?work ?wrel1 ?wobj1 .
+                        OPTIONAL {
+                            ?wobj1 ?wrel2 ?wobj2
+                                MINUS { ?wobj1 a bf:Work }
+                                MINUS { ?wobj1 a bf:Instance } .
+                            OPTIONAL {
+                                ?wobj2 ?wrel3 ?wobj3
+                                    MINUS { ?wobj2 a bf:Work }
+                                    MINUS { ?wobj2 a bf:Instance }
+                            }
+                        }
+                    }
+                }
+            </present>
+
+        </db>
+
+        <!-- Small databases -->
+
+        <!-- "small" contains all the things common to all small databases -->
+        <!-- It is only to be used as an include, it is not searchable, since -->
+        <!-- it has no schema atribute -->
+        <!-- It is divided into "smallbody", and a "small" that includes -->
+        <!-- the general indexes, so that title searches can include the body, -->
+        <!-- but have different "any" indexes -->
+
+        <db path="smallbody" include="thing">
+            <present type="BF-V">
+                <!-- I don't think we need more than one level -->
+                <!--for these simple databases -->
+                CONSTRUCT {
+                    %u ?rel ?obj .
+                    ?obj ?rel1 ?obj1 .
+                }
+                WHERE {
+                    %u ?rel ?obj .
+                    OPTIONAL { ?obj ?rel1 ?obj1 }
+                }
+            </present>
+        </db>
+
+        <!-- The combined "small" database defaults -->
+        <db path="small" include="smallbody">
+            <index type="any">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+            <index type="1016">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <!-- Various "small" databases, leaning heavily on the defaults above -->
+        <db path="place" schema="sparql-results" include="small" >
+            <criteria>?thing a bf:Place</criteria>
+            <index type="bf.place">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <db path="person" schema="sparql-results" include="small" >
+            <criteria>?thing a bf:Person</criteria>
+            <index type="bf.person">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <db path="meeting" schema="sparql-results" include="small" >
+            <criteria>?thing a bf:Meeting</criteria>
+            <index type="bf.meeting">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <db path="agent" schema="sparql-results" include="small" >
+            <criteria>?thing a bf:Agent</criteria>
+            <index type="bf.agent">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <db path="event" schema="sparql-results" include="small" >
+            <criteria>?thing a bf:Event</criteria>
+            <index type="bf.event">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <db path="organization" schema="sparql-results" include="small" >
+            <criteria>?thing a bf:Organization</criteria>
+            <index type="bf.organization">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <db path="topic" schema="sparql-results" include="small" >
+            <criteria>?thing a bf:Topic</criteria>
+            <index type="bf.topic">
+                ?thing bf:label %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <!-- Title search, for seatching Title objects. -->
+        <!-- Not sure if this is needed, but it is a nice example -->
+        <db path="title" schema="sparql-results" include="smallbody" >
+            <criteria>?thing a bf:Title</criteria>
+
+            <index type="any">
+                {
+                    ?thing bf:titleValue %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:subtitle %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:partTitle %v FILTER(contains(%v, %s))
+                }
+            </index>
+
+            <index type="1016">
+                {
+                    ?thing bf:titleValue %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:subtitle %v FILTER(contains(%v, %s))
+                } UNION {
+                    ?thing bf:partTitle %v FILTER(contains(%v, %s))
+                }
+            </index>
+
+            <index type="bf.title">
+                ?thing bf:titleValue %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.subtitle">
+                ?thing bf:subtitle %v FILTER(contains(%v, %s))
+            </index>
+
+            <index type="bf.parttitle">
+                ?thing bf:partTitle %v FILTER(contains(%v, %s))
+            </index>
+        </db>
+
+        <!-- A hack to be able to look at any triplet in the base -->
+        <!-- The indexes bf.uri and bf.ref can also come in handy here -->
+        <db path="node" schema="sparql-results" include="smallbody">
+            <index type="any">
+                ?thing ?rel ?obj FILTER( str(?thing) = %s )
+            </index>
+        </db>
+
+    </filter>
+
+    <filter type="log">
+        <message>http</message>
+    </filter>
+
+    <filter type="http_client">
+        <x-forwarded-for>true</x-forwarded-for>
+    </filter>
 </filters>