First RPN to CQL conversion using actual attribute matching.

[yaz-moved-to-github.git] / include / yaz / rpn2cql.h

diff --git a/include/yaz/rpn2cql.h b/include/yaz/rpn2cql.h
index 1eadae1..26c72f7 100644 (file)
--- a/include/yaz/rpn2cql.h
+++ b/include/yaz/rpn2cql.h
@@ -37,7 +37,7 @@
 
 YAZ_BEGIN_CDECL
 
-/** \brief transforms PQF given a CQL tree
+/** \brief transforms RPN query to CQL output stream
     \param ct CQL transform handle
     \param pr print function
     \param client_data opaque data to be passed to print handler
@@ -52,7 +52,7 @@ int cql_transform_rpn2cql_stream(cql_transform_t ct,
                                  Z_RPNQuery *q);
 
 
-/** \brief transforms PQF given a CQL tree
+/** \brief transforms RPN query to CQL WRBUF
     \param ct CQL transform handle
     \param w WRBUF handle for result
     \param q RPN Query
@@ -64,6 +64,16 @@ int cql_transform_rpn2cql_wrbuf(cql_transform_t ct,
                                 WRBUF w,
                                 Z_RPNQuery *q);
 
+/** \brief find a pattern that has a subset of attributes
+    \param ct CQL transform handle
+    \param category pattern category
+    \param attributes RPN attributes
+    \returns pattern value or NULL if not found
+ */
+const char *cql_lookup_reverse(cql_transform_t ct, 
+                               const char *category,
+                               Z_AttributeList *attributes);
+
 YAZ_END_CDECL
 
 #endif