1 Possible compatibility problems with earlier versions marked with '*'.
3 Retrieval module enhancements. Tag sets may be typed in the reference
4 to it. From the .abs-file the "tagset" directive takes a third optional
5 integer type for the tag set referenced. From a .tag-file the "include"
6 directive takes a third optional type as well. The old "type" directive
7 in the tag set itself is still recognized but acts as the default type
10 Backend interface change. Individual Scan terms returned from bend_scan
11 may also be tagged as Surrogate Diagnostics. Refer to struct scan_entry
14 Retrieval module enhancements. Multiple tag sets and attribute sets may
15 be specified in abstract syntax specs. Revised the error/warning for
16 logging messages reported by the retrieval module when reading the
19 Object Identifier system (oid_..) changed. The API is backwards
20 compatible but the oid-routines now allocates new OID's when needed.
21 Raw OID's may be specified in oid_getvalbyname.
23 YAZ now uses GNU configure to generate Makefile(s).
25 * Minor changes in some of the member names of DeleteResultSetRequest and
26 DeleteResultSetResponse. See include/proto.h.
28 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
29 and added member 'languages' in TargetInfo (which was missing).
31 Changed the way attribute sets are handled in the retrieval
32 module. These are now cached, just like the abstract syntaxes
35 Changed YAZ so that it links with compiled ASN.1.
37 Added Explain-schema definitions and mapping routines. The following
38 Explain categories have been implemented: AttributeDetails,
39 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
41 Fixed minor bug in Windows version of Server Library.
43 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
45 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
47 Added EXTERNAL: UNIverse Resource Report (non-standard).
49 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
50 ENUMERATED and SET OF.
52 * Added 'const' to some of the char pointer arguments for the
53 functions, data1_read_node, data1_getelementbytagname,
54 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
57 Fixed bug in data1_insert_taggeddata - the last_child member of
58 parent wasn't initialised.
60 * Changed data1_read_record and data1_read_node so that the supplied
61 "SGML"-buffer is read-only. In particular the resulting data1 - tree
62 doesn't refer to any parts of the "SGML"-buffer.
64 Fixed bug in server library (Windows version of statserv_remove).
66 * Changed code so that it compiles as C++. The type definition
67 of Odr_fun which is a member of Odr_arm was changed. The result is,
68 that an explicit typecast is needed for the fun pointer when
69 using Odr_arm - as in:
70 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
72 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
74 Implemented the new structured date and time definition as approved
75 by the ZIG. Added schemaId element to the specificTag in Espec-1
76 (also approved at the last ZIG). Thanks to RVDM.
78 Added some Object identifiers (RVDM).
80 Changed the Update Extended Service (RVDM).
82 Added command "refid" to client which specifies referenceId for
83 the following requests.
85 Implemented extended service handling for server. See ztest.c
86 for an example as well as backend.h. New handlers are registerd
89 * Changed interface for sort in server.
91 Added new members to statserv_options_block. It allows a server
92 to read options from another source than just the command line. Thanks
95 * Changed definition of Z_Triple in file prt-grs.h - member boolean
96 renamed to zboolean. Some C++ compilers complained about the name.
98 Minor changes to gils.abs. Added index 's' (sort) on title
99 and date/time-last-modified.
103 Fixed bug in server library regarding inetd mode (-i). This bug
104 was introduced by release 1.4.
108 Added sort facility in client and backend server interface.
110 Fixed problem with dependencies in Makefile(s).
112 Fixed bugs for encoders/decoders of extended services and
115 Implemented sub-tree feature for schemas. Sub-trees are
116 referenced in *.abs-files. See explain.abs for an example
117 of the use of this feature.
119 Modified bib1.att; local attributes for ANY didn't include
120 ANY itself (only affects use of the retrieval module).
122 Fixed bug in plain SGML reader in function data1_read_node:
123 tags with prefix "var" was incorrectly interpreted as variants.
125 Added feature "sub-schemas" to enable references to - and definitions
126 of - group of elements.
128 * Removed member parent from type data1_element (in data1.h).
130 Implemented function odr_nullval() that returns the value of
133 * Removed member num_children from data1_node (in data1.h).
135 Made NT service interface part of the server library. The
136 function statserv_main uses the NT service when required and
137 calls the statserv_start / statserv_close routines.
139 Routine zget_SearchRequest and zget_PresentRequest fills
140 resultSetName/Id member with "default" instead of "Default".
142 Fixed memory leak in server. Request queue member wasn't freed.
144 Fixed nmem_exit so that memory is freed.
148 Revised the CCL parser utility to be thread safe.
150 Added function, oid_ent_to_oid, to replace the function
151 oid_getoidbyent, which is not thread safe.
153 * Added nmem_init and nmem_exit to initialize and release
154 NMEM resources. Function nmem_init should be called once in the
155 initial thread before NMEM/ODR is used. statserv.c and client.c
156 have been changed accordingly. The change was necessary to make
157 NMEM thread safe. The NMEM memory pool is shared amongst threads
158 in a process. Unix-based applications will still work fine without
161 Added NT Services interface for the the Z39.50 (statserv) Server.
162 Refer to the ztest.c source on the usage.
164 Windows 95/NT port using MSVC5.0. Project files are included in the
167 * Defined new 'global' handle for the retrieval (data1) system. The
168 new handled, data1_handle, describes the state of the data1 system.
169 This handle is passed as first argument to virtually all
170 data1 related routines. The functions data1_create and data1_destroy
171 creates and destroys a data1 handle respectively.
173 Added ODR encode stream member to all backend request structures
174 init, search, scan etc. This stream should be used to allocate all
175 memory used for the response when thread safe operation is needed.
177 Changed the comstack utility, cs_addstr, to be thread safe. The
178 returned hostname string returned by the function is now part the
181 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
182 function. The cs_straddr takes a COMSTACK handle as argument, so this
183 function must be used after cs_create and before bind/connect.
184 This function is thread safe.
186 Moved test server to 'ztest' directory - generic server code still
187 in 'server' directory.
189 Made prefix query (pquery.c) utility thread safe.
191 Added new function modifier YAZ_EXPORT to 'export' public DLL
192 functions when using windows (see include/yconfig.h).
194 Added definitions to the OID database (util/oid.c) (RVDM).
196 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
198 Added call to ccl_rpn_delete in client program.
200 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
201 release of RPN structure.
203 Added support for C++, headers uses extern "C" for public definitions.
204 With input from RVDM.
206 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
207 Thanks to Ronald van der Meer (RVDM).
209 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
211 Added support for private extensions to the OID database
212 (oid_setprivateoids()). Thanks to RVDM.
214 Added optional, physical ANY (key replication)
216 Fixed null-reference problem in GRS-1 output filter.
218 Proximity operator added to Prefix Query Format (PQF).
220 In test client command "base" accepts multiple databases.
222 Fixed bug in cs_close stack that caused trouble with WINSOCK.
226 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
228 Smallish bug-fixes in the new encoders/decoders (explain).
230 Bug fixed in DeleteRequest.
232 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
234 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
236 Added SOIF syntax (using private OID for now) to retrieval module and client.
238 Added Update extended service.
240 Added SearchResult-1 additional info structure.
242 Added optional CCL (ISO8777) interpreter as separate module. Available
245 --- 1.2 1996/6/10 (1st anniversary release)
247 Added Summary record syntax. Lightly tested.
249 Added OPAC record syntax. Untested.
251 Added ResourceReport service encoders/decoders. Untested.
253 Fixed bug in z_Unit - wrong tagging on unitSystem.
255 Fixed bug in the DiagRecs decoder.
257 Added options for max PDU size and session timeout to frontend-server.
259 Added documentation of query-language parsers and other supporting utilities.
261 [frontend-server] Added Attribute set to the bend_scanrequest API.
263 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
264 surrogate diagnostics were generated.
266 [retrieval] Allow multiple local values for attribute.
268 [retrieval] Allow multiple attributes per element in .abs files. index type.
270 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
274 Minor changes, mostly specific to Zebra's requirements (retrieval)
278 Repaired bug in frontend server when running multiple listening
279 endpoints in dynamic mode.
281 z_External() now won't break if a known, ASN.1 value comes encapsulated
282 in an octet-string. The value will pass through unmodified in an Odr_oct.
284 Added a bit of code to the demo client to decode & display
285 ASN.1-structured records represented in the octet-aligned branch of
286 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
288 Added z_ext_getentbyref() to the ASN module. Doc updated.
290 * Completed the SCAN definition in the ASN module. This may break SCAN
291 code based on older YAZ-versions at compile-time. The fix is easy -
294 * Added 'displayTerm' and OtherInformation to the TermInfo structure
295 under the SCAN definition. Remember to initialize this, server-people.
297 Comstack should now support the WAIS protocol in TCP/IP mode. Note
298 that this does not extend to ODR and ASN.
300 Comstack allows insertion of established socket (primarily for
301 inetd-operation of servers). Doc updated.
303 Front-end server can now start from the inetd in TCP mode. Doc
310 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
311 the rank and record number.
313 Adjustments to the frontend server.
315 Fixed diagnostic BER dumper. It ignored the file argument.
319 Various changes to retrieval module.
321 Changed the union discriminators of the protocol files from enums to
322 ints paired with #defines.
324 *Changed oident.class to oident.oclass to avoid a reserved word in C++
327 *Changed operator in the RPN structure to 'roperator', again to avoid a
330 Fixed problems in Explain decoders/encoders.
334 Memory bug in log module fixed.
338 Occasional malloc() of 0 bytes fixed in d1_espec.c.
340 Bug in Explain DatabaseInfo module fixed.
342 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
346 The shift to v1.0 signals that we now consider the *core* functionality
347 of YAZ reasonably stable (the core being more or less equivalent to
348 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
349 tested (Explain not at all - though that will happen soonish).
351 Minor changes to code to support Windows port.
353 Various minor changes after we're getting to use GRS-1 & co. more.
355 Added Espec-1 format.
357 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
358 of the protocol and it cannot be selected when encoding (maps into 'string'
359 when decoding). Needed to talk to some servers.
361 Demo client can request simple element set names.
363 Added Diagnostic Format encoders/decoders.
365 Added simple Close handling to frontend server (no hooks for resource
366 reporting yet), and demonstration client.
368 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
372 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
373 handled incorrectly when records were requested in the searchResponse. This
374 will only affect you if you use the frontend-server.
376 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
377 Test-client will ask for and print GRS1. Ztest will return dummy records
380 Added Explain encoders/decoders to the service-level API. Untested.
382 Added Extended Services: Item Order encoders and decoders to the Service-
383 level API. Untested. We could use a recent copy of the pertinent bits
384 of the ILL protocol to add those bits.
386 Added diagnostic format 1 encoders/decoders to the service-level API.
389 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
390 odr_cons.c, which causes a more correct output.
392 Fixed handling of searchRequest in frontend server. NextResultSetPosition
393 was always set to 0 when no records were requested in the searchRequest.
395 * Added better external-handling. This shouldn't harm old code that
396 *encodes* externals. It can break code that looks for a
397 'single-ASN1-type' representation, since those types that are known
398 are now decoded immediately. Look at the SUTRS sample code in
399 seshigh.c and client.c. Documentation updated.
401 Handling of structured records in bend_fetchresponse. Length -1 marks
402 structured record, type is deduced from format field.
405 Fairly quick maintenance release to add SUTRS support.
407 Fixed handling of SUTRS records in the demonstration client.
409 * Added format field to the bend_fetchrequest and bend_fetchresponce
410 structures of the backend API (frontend server). When the record is
411 returned, the value of the format field is mapped to an OID. The
412 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
413 of the record. The special value VAL_NONE in the bend_request means
414 that no specific format was requested by the client. Documentation
415 updated accordingly. Test server (ztest) will return a fixed dummy
416 SUTRS record if your client requests SUTRS.
418 Documentation updated accordingly.
420 You can now set external libraries and RANLIB support in the top-level
424 First public release.