1 Possible compatibility problems with earlier versions marked with '*'.
5 Redhat package is now several packages: libyaz (runtime libraries),
6 libyaz-devel (development and documentation, and yaz (utility programs).
8 New member 'schema' in struct bend_fetch_rr which the name of requested
9 schema (SRW/SRU) for record (or NULL if none was given). The fetch
10 handler MAY set this to reflect the schema of the returned record.
12 New member 'display_term' in struct scan_entry. GFS now sets member entries
13 and allocates scan entries to be filled by user scan handler. In previous
14 version, entries member was allocated by the scan handler. That still works,
15 but the GFS will ignore member display_term - assuming it was NOT set by
16 the handler. The fact that the GFS now allocates the entries both allows
17 for new members and makes a scan handler easier to write.
19 Fix CQL lex buffer overflow.
21 SRW/SRU recordPacking. For SRW default recordPacking is string. For
22 SRU default recordPacking is string.
24 SRU protocol support for frontend server.
26 Fix compile bug for systems that have nl_langinfo but CODESET undefined.
28 Added missing PQF transform rules for <= and >= . Thanks to Peter Popovics.
30 Added scan for the ZOOM shell (zoomsh).
34 * String Identifers for Schemas (Amendment 5).
35 http://lcweb.loc.gov/z3950/agency/amend/am5.html
36 Old definition for schema
37 Odr_oid *schema; /* OPT */
42 Z_InternationalString *uri;
43 #define Z_Schema_oid 1
44 #define Z_Schema_uri 2
47 * resultCount parameter to Sort Response (Amendment 1).
48 http://lcweb.loc.gov/z3950/agency/amend/am1.html
50 Support for SRW 1.0 over HTTP. This is an optional feature and
51 requires libxml2 to operate. Enable SOAP by specifying --with-xml2
54 Generic frontend server supports HTTP/SOAP/SRW and Z39.50/BER
55 on the same port. SRW SearchRetrieveRequests are mapped
56 to bend_init,bend_search,bend_fetch,bend_close.
58 Z39.50 Query Type-104 added - to facilitate CQL within Z39.50.
60 CQL support. Source is directory 'cql'. CQL is supported in ZOOM
61 (both SRW and Z39.50) and the YAZ client (Z39.50 only).
63 ZOOM connections are SRW based if schem http is used for hostname
64 in connect, e.g. z = ZOOM_connection_new("http://myserver");
65 ZOOM_query may be of type CQL, e.g. ZOOM_query_cql(q, "dc.title=x");
67 CCL proximity operators !n, %n converts to PQF @prox 0 n 1 2 k 2
68 and @prox 0 n 0 1 k 2 respectively, meaning: exlusion=false,
69 distance=n, order=true/false, relation=le, prox unit=word. If
70 n is omitted, distance 1 is used.
72 Fixed problem with C compiler include path in wrong order.
74 For TCP/IP COMSTACK, set recv buffer to an appropriate "large" value
75 on Solaris. Patch from Ko van der Sloot.
77 New MARC decode API. All new functions operate on a yaz_marc_t
78 handle. The most important new functions are: yaz_marc_create,
79 yaz_marc_decode_{buf,wrbuf}, yaz_marc_destroy, .. to create handler,
80 decode and destroy respectively. Decoder can produce formats
81 MARC line, simple XML, OAI MARC and MARC XML (LoC). See
82 include/yaz/marcdisp.h.
84 YAZ Iconv utility now supports MARC8 decoding (marc8.c). Converts
85 to UTF-8, UCS-32, wchar_t or Latin-1.
87 * Prototypes for yaz_iconv_-functions moved to separate header
88 include/yaz/yaz-iconv.h.
90 Make a few private functions 'static' in unix.c. This prevents
91 duplicate unix_close in PHP with YAZ and imap. PHP Bug 20977.
93 For ZOOM connection, the options targetImplementation{Id,Name,Version}
94 are set when Init Response is received.
96 New function ZOOM_connection_error_x similar to ZOOM_connection_error
97 but returns diagnostic set as well.
99 New function yaz_strerror which is a portable wrapper for
100 strerror/strerror_r/GetLastMessage.
102 * ZOOM_record_get supports type "xml" in which case MARC XML (from LOC)
103 is returned for MARC. If type is "oai", then OAI MARC is returned.
105 Fix creation of lib/yaz-config so it works if srcdir != objdir. Patch
110 yaz_marc_decode uses OAI MARC as XML format for ISO2709 records.
112 Fix bad race conditions on SIGTERM and terminate gracefully in
115 Move retrieval (data1) module to Zebra since nobody seems to be
118 Add GRS-1 render for ZOOM using same format as yaz-client.
122 Added man pages: yaz-client(1), yaz-ztest(8), yaz(7), zoomsh(1).
124 Fix broken ESpec handling in data1 module.
126 SGML reader parses comments and makes them part of the data1 tree.
128 Added several type casts so that YAZ compiles as C++ code.
130 ZOOM didn't handle PDU encoding failures properly.
132 Added more Bib-1 diagnostics (approved extensions).
134 GNU configure: better check for iconv.
136 More portable use of accept, getpeername. Check for socklen_t. Use
137 int/size_t if socklen_t is not defined.
141 PQF parser rejects bad queries - including those with extra
142 characters in them. PQF parser used to silently ignore that.
143 Cleaner API for PQF added, which allows you to get detailed
144 error information for bad queries (see yaz/pquery.h).
146 Fixed bug in ZOOM_record_get for type "database".
148 Implemented mini iconv library supporting conversions between
149 UTF-8, UCS4, UCS4LE and ISO-8859-1. Implemented in util/siconv.c.
151 * Removed XML reader (d1_expat.c). It's part of Zebra instead.
155 Fixed ZOOM C record cache so that preferredRecordSyntax and
156 elementSetName is used to check for already fetched records.
160 Added three members in bend_initrequest structure to facilitate
161 character set negotiation.
163 Fixed a bug in frontend server that could cause indefinite
164 loops under rare conditions.
166 Revised character set utilities (charneg.h) so that encoding
167 UCS-4, UCSA-4, UTF-16 and UTF-8 are encoded non-privately.
169 For PQF, directive @term <type> sets term type for Scan/Search.
170 Here <type> is general, string, numeric, null. The term type
171 is inherited - just like @attr.
173 New call odr_set_charset that sets character set conversion for
174 international-strings on a ODR stream. Prototype is:
175 int odr_set_charset(ODR o, const char *to, const char *from);
176 The InternationalString is still represented as C string in YAZ
177 so native strings of type UTF-8, ASCII, etc. will work (UTF-16
178 won't). On the protocol level, you can use any encoding.
180 Support for UNIX sockets in ZOOM.
182 Solaris recv sometimes returns errno == ENOENT. It is treated as
183 EINPROGRESS. COMSTACK patch by Ko van der Sloot.
185 New COMSTACK of type UNIX Socket. Use "unix:/path" as address for
186 both client and server. Code by Morten Bøgeskov.
190 On Windows ZOOM functions are of type __stdcall rather than __cdecl, so
191 that they can be used directly from Visual Basic. You must recompile
192 your windows APP if you're using ZOOM.
194 Character Set and Language Negotiation(3) for ZOOM API and YAZ client.
195 Commands "lang" and "charset" sets language and character set respectively.
196 Options "lang" and "charset" is interpreted by the ZOOM API. Note, these
197 are not part of the official ZOOM spec) All is due to Oleg Kolobov.
199 Attributes from multiple CCL fields may be OR'ed rather than merged
200 using directive "@field or". Fields are still merged by default -
201 equivalent to "@field merge".
203 Fixed bug in ZOOM connect that occurred on OpenBSD (maybe others). Patch
206 Fixed bug in zget for parameter ExtendedServicesResponse.
212 Added PQF feature: '@attr type=value' may be written as '@type=value'.
214 Client displays USR.1:SearchResult-1 (hits per term).
216 Additional Search Info for search in Generic Frontend Server.
218 Fixed CCL parsing of "field=s".
220 WIN32 installer - using the excellent NSIS software from nullsoft.
222 Fixed CCL parsing of "field = - <number>".
224 Added function yaz_marc_decode that decodes MARC for line mode
225 display or XML (similar to that used by JZKit).
227 Fixed BER decoding of OPTIONAL CHOICE. The bug didn't affect the
228 Z39.50. But ISO/ILL was, however.
230 Added patch by Rustam T. Usmanov that implements Z39.50 duplicate
231 detection service (Z39.50-1995 Amendment 2) and Language Negotiation (3).
233 http://lcweb.loc.gov/z3950/agency/amend/am2.html
234 http://lcweb.loc.gov/z3950/agency/defns/charneg-3.html
238 New YAZ client features: Command completion and new commands:
239 push_command, set_apdufile, set_marcdump, set_cclfields, register_oid.
240 Code provided by Jacob Poulsen.
242 New call oid_trav, that visits all registered OIDs via callback.
244 Function ZOOM_record_get now returns const char pointer rather than
245 void pointer. It saves a lot of type casts.
247 For YAZ client, command "auth" now allows you to set authentication
248 in IdPass style. It is enabled when three tokens are given - order
249 is user, group and password.
251 Fix memory leaks in MARC record handling for ZOOM.
253 New option for YAZ client, -k <kilobytes> that sets
254 maximum record size. Similar to -k option for generic frontend
255 server and yaz-ztest.
257 More fixes for scan. Non-zero stepSize handled. OID's fixes.
259 Prefix query parser reports "fail" when bad attribute set is given.
261 Fix in MARC decoder. Proximity logging. Fix for attribute set
262 in scan handler for server. Patches by Shigeru Ishida.
264 SSL/COMSTACK updates. cs_rcvconnect completes SSL handshake. ZOOM
267 Configure option --with-openssl=<dir> now works when a directory is
268 specified. Patch provided by Morten Bøgeskov.
270 New option for YAZ client, -u <auth>, that sets authentication.
272 ZOOM fix: error information was sometimes "missing", since error
273 was cleared/reset too when it shouldn't.
275 ZOOM_record_get returns ISO2709 buffer when "raw" is given.
279 Scan for ZOOM API. New object ZOOM_scanset. New functions
280 ZOOM_connection_scan, ZOOM_scanset_size, ZOOM_scanset_term and
281 ZOOM_scanset_destroy.
283 New ZOOM function, ZOOM_connection_last_event, that returns type
284 of last event (such as "receive data", "send data", "apdu received",
287 New ZOOM option, schema, that specifies schema for retrieval.
289 New CCL feature. Qualifiers can be aliases for one or more
290 other qualifiers (if more than one is given, OR is used).
292 ZOOM uses named result sets if target supports it.
294 Two new YAZ client commands: . (dot, which sources a script of YAZ
295 client commands), and ! (to execute shell command.). Implemented
298 Working on Debian packages.
302 YAZ client enables named result sets only if target supports it.
304 *** ZOOM. Prefix for ZOOM definitions changed from Z3950_ to ZOOM_.
306 * ZOOM. Removed Z3950_connection_host. Use Z3950_connection_option_get
307 with key="host" to get same result.
309 * ZOOM. Added Z3950_record_clone and removed Z3950_resultset_get.
310 Function Z3950_resultset_record(s) returns references to records
311 "owned" by resultset. To become owner use Z3950_record_clone.
313 Function z_ext_record handles Extended Services. Thanks to
318 CCL Parser fix: ignore token comma when dealing with and-lists.
320 Documentation updates for COMSTACK.
322 * ZOOM changes. Query object renamed from Z3950_search to Z3950_query.
323 Changed prototype Z3950_records. For some functions, int parameters
324 were changed to size_t.
326 TCP/IP COMSTACK no longer uses getprotobyname to avoid memory leak
329 New MARC decode/display function, marc_display_exl, which properly rejects
330 non-ISO2709 records. YAZ client uses it.
334 Fix bug: local attribute set wasn't set correctly in PQF strings.
338 * Old Z39.50 codecs no longer supported.
340 Added ZOOM C binding. See http://zoom.z3950.org/
342 Renamed states for COMSTACKs to avoid confusion with events.
344 Implemented cs_look and proper cs_rcvconnect.
346 Fixed COMSTACK error that occurred on HPUX. Fix by Giannis Kosmas.
348 Configure detects POSIX threads on OpenBSD.
350 When sort flag 'i' was specified in yaz-client the caseSensitivy flag
351 was set to a wrong value. Thanks to Robert Sanderson for reporting this.
353 When error is returned from present handler, non-surrogate diagnostic
354 is returned in present response (and fetch handler is no longer called).
356 * Minor adjustments to pquery parser (PQF). Token characters may be
357 escaped by using backslash (C-style).
359 PQF parser allows string attribute values to be specified. For @attr,
360 non-numeric characters after the equal-sign are treated as strings
361 (e.g. @attr 9=title).
363 CCL trunction character may be defined (@truncation in file)
365 * function zget_ExtendedServicesRequest sets waitAction to
366 waitIfPossible (was wait).
368 Added cs_set_blocking to set change blocking mode of a COMSTACK. Thanks
371 CCL operator names may be set in field definition files (CCL_bibset).
372 See ccl/bib1 for an example.
374 Fixes in ASN.1 compiler for C++ compatibility.
376 * Renamed members "and" and "or" in struct Z_Operator to "op_and"
377 and "op_or" to avoid conflict with C++.
379 Fixed problem with GNU readline detection on Redhat 7.0.
381 Added step-size for Scan backend handler.
383 Fixed bug that made the frontend server crash when no attribute
384 set was specified for scan.
386 Front-end server automatically switches to original working directory
387 when installed as an NT service. Previously -w had to be specified to
390 Added extended attributes for retrieval module (data1), so that data1
391 records carry d1_readXML/SGML attributes. d1_read also supports
392 null-data rules ( <tag/>)
394 On UNIX when POSIX threads are available, a separate library libyazthread
395 is created. Programmers should link with that library and the yaz library
396 when using threads. The reason for the split was that some applications
397 on Linux, such as Apache, doesn't work well when using shared objects that
400 Added SSL support for the COMSTACK. You start yaz-client and yaz-ztest
401 (or any frontend server) in SSL mode by specifying ssl: followed by
402 address. Only tested on UNIX.
404 Added feature for CCL module. Virtual structure s=al or s=ol generates
405 and-list and or-list respectively instead of phrase search.
409 * Added prefix "yaz_" for the functions log_init.., log_file.. and
410 log_mask_str. This was done to avoid name conflicts with other libraries
411 (such as other PHP extensions).
413 Added raw OID member for preferred record syntax (request_format_raw)
414 and returned record syntax (output_format_raw) for backend fetch method.
416 Config file yaz-config now accepts options so that it returns specific
417 compile settings, etc. Thanks to Morten Bøgeskov <morten@bogeskov.dk>
419 Shared library support for UNIX using GNU libtool.
421 * Modified backend interface. Request/Response struct's replaced by
422 one read/write C struct. For example bend_fetchrequest and
423 bend_fetchresult have been replaced by single bend_fetch_rr struct.
424 Every handler - even search has to be registered in bend_init
425 handler. This means that the YAZ library no longer refers to
426 external functions and it makes it possible to make the whole
427 thing a single DLL/SO.
429 Added Segment handler for backend server.
431 Added Zmbol/Zebra administrative functions to YAZ client.
433 Threaded frontend server on UNIX (when POSIX Threads are available).
434 Starting the server with option -T enables multi-threading.
438 Added configure option --enable-comp/disable-comp to control use
439 of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
440 located in sub directory asn.
442 YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
443 in ${exec_prefix}/bin along with the other programs yaz-client and
446 GNU automake used to maintain makefiles.
450 Changed retrieval module so that we can load records with no abstract
451 syntax defined. Tagpaths in these records are fully composed of string
454 Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
458 On UNIX, the generated makefile now supports a proper 'make install'.
459 The prefix can be set via GNU configure to set the install location
460 (default is /usr/local).
462 * YAZ programs client and ztest were renamed to yaz-client and
463 yaz-ztest to avoid conflicts when users install YAZ in "standard"
464 locations, such as /usr/bin,/usr/local/bin,etc.
466 * YAZ Header files were moved from include to include/yaz. YAZ Header
467 files are referred to as include <yaz/log.h> rather than <log.h>.
468 The YAZ include path (-I ..) is therefore the same as before. Programmers
469 should update their #include statements or use -Ipath/include/yaz
470 instead. The main motivation for doing this change is that YAZ header files
471 can be installed in "standard" locations /usr/include,/usr/local/include
472 without introducing conflicts, since ALL YAZ header files are stored
473 in subdirectory yaz (under /usr/include for example).
475 Compilation of YAZ for WIN32 is now handled by an nmake-style makefile
476 rather than project/workspace files. We switched because project files
477 are incompatible between Visual C++ 5 and 6. Refer to windows.txt for
480 Changed name of logging function, logf, to yaz_log, to prevent name
481 clash with some math-log functions. The YAZ header log.h defines logf
482 to yaz_log (#define) so there should be no incompatibilities by this
485 Added bend_start/bend_stop handlers for server. These handler are
486 called on start/stop of server. For windows they are called whenever
487 a service is started/stopped.
489 * YAZ now auto-generates decoders/encoders for the Z39.50 protocol using
490 a fairly small ASN.1 compiler written in Tcl. The compiler is located
491 in util/yc.tcl. The auto-generated C code structures are, in a few
492 cases, incompatible with the old decoders. There are differences in the
493 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
494 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
495 The preprocessor variable ASN_COMPILED is defined when the compiled
496 ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
497 protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
498 wish to use the old encoders/decoders you can specify --disable-yc
501 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
502 version so that it supports both new - and old version of DB Update
504 * Added 'name' parameter to ODR encoder/decoder routines to facilitate
505 pretty ODR print. Updated whole Z39.50 encoder/decoder to reflect the
506 change. The name parameter can be set to 0 in which no name is specified
507 for the construction. The macros odr_implicit and odr_explicit sets name
508 parameter to zero for the construction involved. New macros
509 odr_implicit_tag and odr_explicit_tag are similar to the others,
510 except that a name parameter is added. For programmers' that don't use
511 ODR they probably only need to change the call to z_APDU and z_External.
513 Added access control facility by interfacing the TCP wrapper library.
514 YAZ automatically attempts to find the TCP wrapper Library (-lwrap) and
515 tcpd.h on Unix systems. For the server, option -d<daemon> specifies the
516 name of the daemon and enables the access control as specified in
517 hosts.allow/hosts.deny. Refer to man pages tcpd(8) and hosts_access(5).
519 Fixed memory leak in ccl_find_str and ccl_qual_rm. Thanks to Hans van
520 den Dool <H.M.vdnDool@kub.nl>.
522 Added reference ID parameter to most functions in server API - refer
523 to backend.h. Thanks to Hans van den Dool <H.M.vdnDool@kub.nl>.
525 Changed name of ccl library to libccl.a (was ccl.a).
527 Fixed bug in decoder for Explain (Category TargetInfo).
529 Added support for GNU readline in client. Thanks to Jacob Poulsen
530 <ja7@dbc.dk>. GNU configure attempts to detect if readline is available.
532 * CHANGED DEFINITION OF ES: UPDATE (INCLUDING THE OID) to reflect the
533 new definition from the ZIG. NOTE THIS IF YOU HAVE AN UPDATE
534 IMPLEMENTATION! This change was made to the development version before
535 the ZIG decided to retract the amendment. If any users MUST be
536 compatible with the original Update definition, PLEASE CONTACT US, and
537 we will include a separate definition corresponding to the old Update
538 ES. Note that because of the change to the ASN.1 of the
539 TaskPackageRecordStructure we cannot define a single structure that
540 will support both versions.
542 * Added const modifier to buffer parameter for some ODR/BER encoding
543 routines: ber_dectag, ber_declen, odp_more_chunks, completeBER,
544 completeWAIS, odr_dumpBER.
546 Fixed bug in client.c which caused a crash when a scanResponse didn't
547 contain positionOfTerm.
549 * Fixed inconsistency in the ScanResponse/ListEntries protocol. This
550 * will cause an error in a client if a non-YAZ target sends both a
551 * list of Scan entries and non-surrogate diagnostics.
553 Retrieval module enhancements. Tag sets may be typed in the reference
554 to it. From the .abs-file the "tagset" directive takes a third optional
555 integer type for the tag set referenced. From a .tag-file the "include"
556 directive takes a third optional type as well. The old "type" directive
557 in the tag set itself is still recognized but acts as the default type
560 Backend interface change. Individual Scan terms returned from bend_scan
561 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
562 in include/backend.h.
564 Retrieval module enhancements. Multiple tag sets and attribute sets may
565 be specified in abstract syntax specs. Revised the error/warning for
566 logging messages reported by the retrieval module when reading the
569 Object Identifier system (oid_..) changed. The API is backwards
570 compatible but the oid-routines now allocates new OID's when needed.
571 Raw OID's may be specified in oid_getvalbyname.
573 YAZ now uses GNU configure to generate Makefile(s).
575 * Minor changes in some of the member names of DeleteResultSetRequest and
576 DeleteResultSetResponse. See include/proto.h.
578 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
579 and added member 'languages' in TargetInfo (which was missing).
581 Changed the way attribute sets are handled in the retrieval
582 module. These are now cached, just like the abstract syntaxes
585 Changed YAZ so that it links with compiled ASN.1.
587 Added Explain-schema definitions and mapping routines. The following
588 Explain categories have been implemented: AttributeDetails,
589 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
591 Fixed minor bug in Windows version of Server Library.
593 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
595 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
597 Added EXTERNAL: UNIverse Resource Report (non-standard).
599 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
600 ENUMERATED and SET OF.
602 * Added 'const' to some of the char pointer arguments for the
603 functions, data1_read_node, data1_getelementbytagname,
604 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
607 Fixed bug in data1_insert_taggeddata - the last_child member of
608 parent wasn't initialised.
610 * Changed data1_read_record and data1_read_node so that the supplied
611 "SGML"-buffer is read-only. In particular the resulting data1 - tree
612 doesn't refer to any parts of the "SGML"-buffer.
614 Fixed bug in server library (Windows version of statserv_remove).
616 * Changed code so that it compiles as C++. The type definition
617 of Odr_fun which is a member of Odr_arm was changed. The result is,
618 that an explicit typecast is needed for the fun pointer when
619 using Odr_arm - as in:
620 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
622 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
624 Implemented the new structured date and time definition as approved
625 by the ZIG. Added schemaId element to the specificTag in Espec-1
626 (also approved at the last ZIG). Thanks to RVDM.
628 Added some Object identifiers (RVDM).
630 Changed the Update Extended Service (RVDM).
632 Added command "refid" to client which specifies referenceId for
633 the following requests.
635 Implemented extended service handling for server. See ztest.c
636 for an example as well as backend.h. New handlers are registerd
639 * Changed interface for sort in server.
641 Added new members to statserv_options_block. It allows a server
642 to read options from another source than just the command line. Thanks
643 to Charles Woodfield.
645 * Changed definition of Z_Triple in file prt-grs.h - member boolean
646 renamed to zboolean. Some C++ compilers complained about the name.
648 Minor changes to gils.abs. Added index 's' (sort) on title
649 and date/time-last-modified.
653 Fixed bug in server library regarding inetd mode (-i). This bug
654 was introduced by release 1.4.
658 Added sort facility in client and backend server interface.
660 Fixed problem with dependencies in Makefile(s).
662 Fixed bugs for encoders/decoders of extended services and
665 Implemented sub-tree feature for schemas. Sub-trees are
666 referenced in *.abs-files. See explain.abs for an example
667 of the use of this feature.
669 Modified bib1.att; local attributes for ANY didn't include
670 ANY itself (only affects use of the retrieval module).
672 Fixed bug in plain SGML reader in function data1_read_node:
673 tags with prefix "var" was incorrectly interpreted as variants.
675 Added feature "sub-schemas" to enable references to - and definitions
676 of - group of elements.
678 * Removed member parent from type data1_element (in data1.h).
680 Implemented function odr_nullval() that returns the value of
683 * Removed member num_children from data1_node (in data1.h).
685 Made NT service interface part of the server library. The
686 function statserv_main uses the NT service when required and
687 calls the statserv_start / statserv_close routines.
689 Routine zget_SearchRequest and zget_PresentRequest fills
690 resultSetName/Id member with "default" instead of "Default".
692 Fixed memory leak in server. Request queue member wasn't freed.
694 Fixed nmem_exit so that memory is freed.
698 Revised the CCL parser utility to be thread safe.
700 Added function, oid_ent_to_oid, to replace the function
701 oid_getoidbyent, which is not thread safe.
703 * Added nmem_init and nmem_exit to initialize and release
704 NMEM resources. Function nmem_init should be called once in the
705 initial thread before NMEM/ODR is used. statserv.c and client.c
706 have been changed accordingly. The change was necessary to make
707 NMEM thread safe. The NMEM memory pool is shared amongst threads
708 in a process. Unix-based applications will still work fine without
711 Added NT Services interface for the the Z39.50 (statserv) Server.
712 Refer to the ztest.c source on the usage.
714 Windows 95/NT port using MSVC5.0. Project files are included in the
717 * Defined new 'global' handle for the retrieval (data1) system. The
718 new handled, data1_handle, describes the state of the data1 system.
719 This handle is passed as first argument to virtually all
720 data1 related routines. The functions data1_create and data1_destroy
721 creates and destroys a data1 handle respectively.
723 Added ODR encode stream member to all backend request structures
724 init, search, scan etc. This stream should be used to allocate all
725 memory used for the response when thread safe operation is needed.
727 Changed the comstack utility, cs_addstr, to be thread safe. The
728 returned hostname string returned by the function is now part the
731 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
732 function. The cs_straddr takes a COMSTACK handle as argument, so this
733 function must be used after cs_create and before bind/connect.
734 This function is thread safe.
736 Moved test server to 'ztest' directory - generic server code still
737 in 'server' directory.
739 Made prefix query (pquery.c) utility thread safe.
741 Added new function modifier YAZ_EXPORT to 'export' public DLL
742 functions when using windows (see include/yconfig.h).
744 Added definitions to the OID database (util/oid.c) (RVDM).
746 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
748 Added call to ccl_rpn_delete in client program.
750 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
751 release of RPN structure.
753 Added support for C++, headers uses extern "C" for public definitions.
754 With input from RVDM.
756 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
757 Thanks to Ronald van der Meer (RVDM).
759 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
761 Added support for private extensions to the OID database
762 (oid_setprivateoids()). Thanks to RVDM.
764 Added optional, physical ANY (key replication)
766 Fixed null-reference problem in GRS-1 output filter.
768 Proximity operator added to Prefix Query Format (PQF).
770 In test client command "base" accepts multiple databases.
772 Fixed bug in cs_close stack that caused trouble with WINSOCK.
776 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
778 Smallish bug-fixes in the new encoders/decoders (explain).
780 Bug fixed in DeleteRequest.
782 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
784 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
786 Added SOIF syntax (using private OID for now) to retrieval module and client.
788 Added Update extended service.
790 Added SearchResult-1 additional info structure.
792 Added optional CCL (ISO8777) interpreter as separate module. Available
795 --- 1.2 1996/6/10 (1st anniversary release)
797 Added Summary record syntax. Lightly tested.
799 Added OPAC record syntax. Untested.
801 Added ResourceReport service encoders/decoders. Untested.
803 Fixed bug in z_Unit - wrong tagging on unitSystem.
805 Fixed bug in the DiagRecs decoder.
807 Added options for max PDU size and session timeout to frontend-server.
809 Added documentation of query-language parsers and other supporting utilities.
811 [frontend-server] Added Attribute set to the bend_scanrequest API.
813 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
814 surrogate diagnostics were generated.
816 [retrieval] Allow multiple local values for attribute.
818 [retrieval] Allow multiple attributes per element in .abs files. index type.
820 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
824 Minor changes, mostly specific to Zebra's requirements (retrieval)
828 Repaired bug in frontend server when running multiple listening
829 endpoints in dynamic mode.
831 z_External() now won't break if a known, ASN.1 value comes encapsulated
832 in an octet-string. The value will pass through unmodified in an Odr_oct.
834 Added a bit of code to the demo client to decode & display
835 ASN.1-structured records represented in the octet-aligned branch of
836 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
838 Added z_ext_getentbyref() to the ASN module. Doc updated.
840 * Completed the SCAN definition in the ASN module. This may break SCAN
841 code based on older YAZ-versions at compile-time. The fix is easy -
844 * Added 'displayTerm' and OtherInformation to the TermInfo structure
845 under the SCAN definition. Remember to initialize this, server-people.
847 Comstack should now support the WAIS protocol in TCP/IP mode. Note
848 that this does not extend to ODR and ASN.
850 Comstack allows insertion of established socket (primarily for
851 inetd-operation of servers). Doc updated.
853 Front-end server can now start from the inetd in TCP mode. Doc
860 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
861 the rank and record number.
863 Adjustments to the frontend server.
865 Fixed diagnostic BER dumper. It ignored the file argument.
869 Various changes to retrieval module.
871 Changed the union discriminators of the protocol files from enums to
872 ints paired with #defines.
874 *Changed oident.class to oident.oclass to avoid a reserved word in C++
877 *Changed operator in the RPN structure to 'roperator', again to avoid a
880 Fixed problems in Explain decoders/encoders.
884 Memory bug in log module fixed.
888 Occasional malloc() of 0 bytes fixed in d1_espec.c.
890 Bug in Explain DatabaseInfo module fixed.
892 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
896 The shift to v1.0 signals that we now consider the *core* functionality
897 of YAZ reasonably stable (the core being more or less equivalent to
898 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
899 tested (Explain not at all - though that will happen soonish).
901 Minor changes to code to support Windows port.
903 Various minor changes after we're getting to use GRS-1 & co. more.
905 Added Espec-1 format.
907 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
908 of the protocol and it cannot be selected when encoding (maps into 'string'
909 when decoding). Needed to talk to some servers.
911 Demo client can request simple element set names.
913 Added Diagnostic Format encoders/decoders.
915 Added simple Close handling to frontend server (no hooks for resource
916 reporting yet), and demonstration client.
918 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
922 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
923 handled incorrectly when records were requested in the searchResponse. This
924 will only affect you if you use the frontend-server.
926 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
927 Test-client will ask for and print GRS1. Ztest will return dummy records
930 Added Explain encoders/decoders to the service-level API. Untested.
932 Added Extended Services: Item Order encoders and decoders to the Service-
933 level API. Untested. We could use a recent copy of the pertinent bits
934 of the ILL protocol to add those bits.
936 Added diagnostic format 1 encoders/decoders to the service-level API.
939 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
940 odr_cons.c, which causes a more correct output.
942 Fixed handling of searchRequest in frontend server. NextResultSetPosition
943 was always set to 0 when no records were requested in the searchRequest.
945 * Added better external-handling. This shouldn't harm old code that
946 *encodes* externals. It can break code that looks for a
947 'single-ASN1-type' representation, since those types that are known
948 are now decoded immediately. Look at the SUTRS sample code in
949 seshigh.c and client.c. Documentation updated.
951 Handling of structured records in bend_fetchresponse. Length -1 marks
952 structured record, type is deduced from format field.
955 Fairly quick maintenance release to add SUTRS support.
957 Fixed handling of SUTRS records in the demonstration client.
959 * Added format field to the bend_fetchrequest and bend_fetchresponce
960 structures of the backend API (frontend server). When the record is
961 returned, the value of the format field is mapped to an OID. The
962 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
963 of the record. The special value VAL_NONE in the bend_request means
964 that no specific format was requested by the client. Documentation
965 updated accordingly. Test server (ztest) will return a fixed dummy
966 SUTRS record if your client requests SUTRS.
968 Documentation updated accordingly.
970 You can now set external libraries and RANLIB support in the top-level
974 First public release.