2 * Copyright (C) 1995-1998, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
6 Compilation and installation for YAZ
7 $Id: README,v 1.21 1998-01-29 14:08:43 adam Exp $
9 The primary output of the source here is the lib/libyaz.a library,
10 which contains support functions for implementing the server or client
13 Windows programmers: refer to the file windows.txt which describes
14 how to compile the software using Microsoft Visual C++.
16 Two test-programs of interest are generated when you type 'make' at the
17 top level: ztest/ztest and client/client. Ztest is a dummy database
18 server which returns canned responses to all queries. It's good for
19 verifying that the protocol works ok, and ztest.c shows a minimalistic
20 implementation of the 'backend' interface.
22 Client is a linemode Z39.50 client. It supports a fair amount of the
23 functionality of Z39.50v2/SR, but some things you need to enable or
24 disable by recompilation. Its primary purpose is to excersise the
25 package, and verify that the protocol works OK. It can be started
28 client tcp:<hostname>:<port>
30 at the UNIX prompt, to connect to a Z39.50 server, or
32 client osi:[<tsel>'/']<hostname>:<port>
34 to connect to an OSI SR target (this requires mOSI-support). To connect
35 to the DANBIB test target, you might use:
37 client osi:0103/find2.denet.dk:4500
39 Use '?' to get a list of the available commands.
41 The current query language for the find command is a bit awkward, but
44 query ::= ['@attrset' <attribute-set>] rpn
45 rpn ::= complex | simple | attr rpn
46 complex ::= operator rpn rpn
47 operator ::= '@and' | '@or' | '@not' | '@prox' proximity
48 simple ::= term | set.
49 term ::= <word> | '"' <term> ... '"'.
50 set ::= '@set' <setname>.
51 attr ::= '@attr' [<attribute-set>] <number> '=' <number>.
52 proximity ::= exclusion distance ordered relation which unit
53 exclusion ::= '1' | '0' | 'void'
57 which ::= 'known' | 'private'
66 @and @attr 1=1 andersen @attr 1=4 @attr 4=2 duckling
68 @attrset Bib-1 @and @attr GILS 2=2008 Washington @attr 1=21 weather
70 The sort command takes a sequence of sort specifications. A sort
71 specification holds a field (sort criteria) and is followed by flags.
72 If the sort critieria includes = it is assumed that the sort SortKey
73 is of type sortAttributes using Bib-1. The integer before the = is
74 the attribute type and the integer following the = is the attribute
75 value. If no = is in the SortKey it is treated as a sortfield-type
76 of type InternationalString. Flags observed are s (sort case
77 sensitive), i (sort case insensitive), < (ascending), > (descending).
79 1=4 i> (use is title, insensitive, ascending).
80 Title s< (String Title, sensitive, descending).
86 util - Various little utility functions. Logging, memory debugging,
87 primitive ISO 2709 presentation for the client, etc.
89 odr - Open Data Representation. This module implements the BER
90 encoding rules. Documentation is found in the files odr-use.man
93 asn - This module implements the Z39.50/SR protocol. The best way
94 to find out how it works is to look in the sample
95 client/server code in server/seshigh.c or yazlib/tst.c. The
96 interface is still wholly described by the file proto.h
97 which defines structure and type definitions for each of the
98 types introduced in the protocol specification.
100 comstack- This module implements the transport transparency
101 stack (COMSTACK). The comstack implements a generic interface
102 for exchanging BER-encoded records over a network. It supports
103 the 'American' mode of exchanging the records straight over
104 TCP/IP, and uses Peter Furniss' XTIMOSI package over RFC1006.
105 Look for documentation in the file comstack.man.
107 rfc1006 - Xtimosi requires an implementation of the OSI transport
108 layer with an XTI-based API. Some systems (HP and DEC,
109 notably) provide this. For others, we provide an
110 implementation of the RFC1006 protocol (which is what
111 ISODE-based implementations often use). This module is not
112 neeeded if you don't use xtimosi, and it's not included in the
115 server - This is the implementation of the server frontend. It
116 provides event-handling and server managament functions,
117 and calls the backend primitives (best documentation of these
118 is in the file include/backend.h). See server.txt.
120 client - A demonstration client. If we come upon a good design for a
121 higher level client API, that will live here.
123 ztest - A demonstration server that implements a backend.
125 include - The various header files.
127 makelib - This is a simple utility that gathers the libraries from the
128 previous modules into libyaz.a.
130 lib - The libraries. Primarily libyaz.a.
132 To get more information or assistance, send mail to yaz-help@indexdata.dk.
134 We maintain a mailing-list for the purpose of announcing new versions of
135 the software, bug-reports, discussion etc. You can sign up by sending
136 mail to yaz-request@indexdata.dk and include the following command
137 command in your email: