Add sorting support:

sort and sort-desc relation modifiers (approved)
sort.title and sort.title-desc indexes (deprecated)
sort context-set prefix (deprecated; only for sort indexes)

diff --git a/zebra/pqf.properties b/zebra/pqf.properties
index 0601bc8..b8f36c3 100644 (file)
--- a/zebra/pqf.properties
+++ b/zebra/pqf.properties
@@ -1,4 +1,4 @@
-# $Id: pqf.properties,v 1.7 2006-09-18 10:45:43 mike Exp $
+# $Id: pqf.properties,v 1.8 2006-09-19 16:29:05 mike Exp $
 #
 # Properties file to drive the YAZ CQL-to-PQF converter for Zebra.
 # This specifies the interpretation of various CQL indexes, relations,
@@ -10,6 +10,7 @@ set.rec               = info:srw/cql-context-set/2/rec-1.1
 set.net                = info:srw/cql-context-set/2/net-1.0
 set.dc         = info:srw/cql-context-set/1/dc-v1.1
 set.zeerex      = info:srw/cql-context-set/2/zeerex-1.1
+set.sort       = http://irspy.indexdata.com/cql/sort/1.0
 
 # The default set when an index doesn't specify one: Net
 set            = info:srw/cql-context-set/2/net-1.0
@@ -29,6 +30,15 @@ index.net.path                               = 1=net:path
 index.dc.title                         = 1=dc:title
 index.dc.creator                       = 1=dc:creator
 
+# Sorting indexes
+#   ###        These are deprecated in favour of the relation modifiers below
+#      -- i.e. instead of "net.port=3950 or sort.title=0", use
+#      "net.port=3950 or dc.title/sort=0".  This approach has the
+#      benefit that only two new entities (sort and sort-desc) need
+#      be added in total, rather than two per sortable index.
+index.sort.title                       = 7=1 1=dc:title
+index.sort.title-desc                  = 7=2 1=dc:title
+
 # Relation attributes are selected according to the CQL relation by
 # looking up the "relation.<relation>" property:
 #
@@ -53,6 +63,10 @@ relationModifier.stem                        = 2=101
 relationModifier.phonetic              = 2=100
 relationModifier.regexp                        = 5=102
 
+# Non-standard extensions to provoke Zebra's inline sorting
+relationModifier.sort                  = 7=1
+relationModifier.sort-desc             = 7=2
+
 # Position attributes may be specified for anchored terms (those
 # beginning with "^", which is stripped) and unanchored (those not
 # beginning with "^").  This may change when we get a BIB-1 truncation