New function: p_query_attset.

[yaz-moved-to-github.git] / README

diff --git a/README b/README
index bc365da..8096b34 100644 (file)
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
 
 

- * Copyright (C) 1995, Index Data.
+ * Copyright (C) 1995-1996, Index Data.

  * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
 
  * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
 

@@ -31,9 +31,28 @@ the DANBIB test target, you might use:
 
 client osi:0103/find2.denet.dk:4500
 
 
 client osi:0103/find2.denet.dk:4500
 

-Client supports CCL-queries, with the mapping between qualifiers and
-attribute values specified in the file default.bib in the working
-directory. Use '?' to get a list of the available commands.
+Use '?' to get a list of the available commands.
+
+The current query language is a bit awkward, but functional:
+
+query    ::= ['@attrset' <attribute-set>] rpn
+rpn      ::= complex | simple | attr rpn
+complex  ::= operator rpn rpn
+operator ::= '@and' | '@or' | '@not'.
+simple   ::= term | set.
+term     ::= <word> | '"' <term> ... '"'.
+set      ::= '@set' <setname>.
+attr     ::= '@attr' [<attribute-set>] <number> '=' <number>.
+
+Eg.:
+
+Andersen
+
+"Hans Andersen"
+
+@and @attr 1=1 andersen @attr 1=4 @attr 4=2 duckling
+
+@attrset Bib-1 @and @attr GILS 2=2008 Washington @attr 1=21 weather

 
 The directories:
 
 
 The directories:
 

@@ -53,7 +72,7 @@ asn     - This module implements the Z39.50/SR protocol. The best way
        which defines structure and type definitions for each of the
        types introduced in the protocol specification.
 
        which defines structure and type definitions for each of the
        types introduced in the protocol specification.
 

-yazlib  - This module implements the transport transparency
+comstack- This module implements the transport transparency

        stack (COMSTACK). The comstack implements a generic interface
        for exchanging BER-encoded records over a network. It supports
        the 'American' mode of exchanging the records straight over
        stack (COMSTACK). The comstack implements a generic interface
        for exchanging BER-encoded records over a network. It supports
        the 'American' mode of exchanging the records straight over

@@ -82,3 +101,9 @@ makelib - This is a simple utility that gathers the libraries from the
        previous modules into libyaz.a.
 
 lib     - The libraries. Primarily libyaz.a.
        previous modules into libyaz.a.
 
 lib     - The libraries. Primarily libyaz.a.

+
+To get more information or assistance, send mail to yaz-help@index.ping.dk.
+
+We maintain a mailing-list for the purpose of announcing new versions of
+the software, bug-reports, discussion etc. You can sign up by sending
+mail to yaz-request@index.ping.dk.