1 Possible compatibility problems with earlier versions marked with '*'.
3 Backend interface change. Individual Scan terms returned from
4 bend_scan may also be tagged as Surrogate Diagnostics. Refer
5 to struct scan_entry in include/backend.h.
7 Retrieval module enhancements. Multiple tag sets and attribute sets
8 may be specified in abstract syntax specs. Revised the error/warning
9 logging messages reported by the retrieval module when reading the
12 Object Identifier system (oid_..) changed. The API is backwards
13 compatible but the oid-routines now allocates new OID's
14 when needed. Raw OID's may be specified in oid_getvalbyname.
16 YAZ now uses GNU configure to generate Makefile(s).
18 * Minor changes in some of the member names of DeleteResultSetRequest and
19 DeleteResultSetResponse. See include/proto.h.
21 * Changed some C definitions regarding EXPLAIN record syntax (prt-exp.h)
22 and added member 'languages' in TargetInfo (which was missing).
24 Changed the way attribute sets are handled in the retrieval
25 module. These are now cached, just like the abstract syntaxes
28 Changed YAZ so that it links with compiled ASN.1.
30 Added Explain-schema definitions and mapping routines. The following
31 Explain categories have been implemented: AttributeDetails,
32 AttributeSetInfo, DatabaseInfo, CategoryList and TargetInfo.
34 Fixed minor bug in Windows version of Server Library.
36 --- 1.4pl2+ 1998/4/17 (Released with Zebra)
38 Added Extended Services to server (backend.h). Thanks to Charles Woodfield.
40 Added EXTERNAL: UNIverse Resource Report (non-standard).
42 Implemened odr_enum and odr_set_of functions to handle ASN.1 types
43 ENUMERATED and SET OF.
45 * Added 'const' to some of the char pointer arguments for the
46 functions, data1_read_node, data1_getelementbytagname,
47 data1_insert_taggeddata, data1_getesetbyname, data1_getelementbyname,
50 Fixed bug in data1_insert_taggeddata - the last_child member of
51 parent wasn't initialised.
53 * Changed data1_read_record and data1_read_node so that the supplied
54 "SGML"-buffer is read-only. In particular the resulting data1 - tree
55 doesn't refer to any parts of the "SGML"-buffer.
57 Fixed bug in server library (Windows version of statserv_remove).
59 * Changed code so that it compiles as C++. The type definition
60 of Odr_fun which is a member of Odr_arm was changed. The result is,
61 that an explicit typecast is needed for the fun pointer when
62 using Odr_arm - as in:
63 {1, -1, -1, Z_IdAuthentication_idPass, (Odr_fun)z_IdPass},
65 Updated TagSet-G and -M definitions (tagsetm.tag and tagsetg.tag).
67 Implemented the new structured date and time definition as approved
68 by the ZIG. Added schemaId element to the specificTag in Espec-1
69 (also approved at the last ZIG). Thanks to RVDM.
71 Added some Object identifiers (RVDM).
73 Changed the Update Extended Service (RVDM).
75 Added command "refid" to client which specifies referenceId for
76 the following requests.
78 Implemented extended service handling for server. See ztest.c
79 for an example as well as backend.h. New handlers are registerd
82 * Changed interface for sort in server.
84 Added new members to statserv_options_block. It allows a server
85 to read options from another source than just the command line. Thanks
88 * Changed definition of Z_Triple in file prt-grs.h - member boolean
89 renamed to zboolean. Some C++ compilers complained about the name.
91 Minor changes to gils.abs. Added index 's' (sort) on title
92 and date/time-last-modified.
96 Fixed bug in server library regarding inetd mode (-i). This bug
97 was introduced by release 1.4.
101 Added sort facility in client and backend server interface.
103 Fixed problem with dependencies in Makefile(s).
105 Fixed bugs for encoders/decoders of extended services and
108 Implemented sub-tree feature for schemas. Sub-trees are
109 referenced in *.abs-files. See explain.abs for an example
110 of the use of this feature.
112 Modified bib1.att; local attributes for ANY didn't include
113 ANY itself (only affects use of the retrieval module).
115 Fixed bug in plain SGML reader in function data1_read_node:
116 tags with prefix "var" was incorrectly interpreted as variants.
118 Added feature "sub-schemas" to enable references to - and definitions
119 of - group of elements.
121 * Removed member parent from type data1_element (in data1.h).
123 Implemented function odr_nullval() that returns the value of
126 * Removed member num_children from data1_node (in data1.h).
128 Made NT service interface part of the server library. The
129 function statserv_main uses the NT service when required and
130 calls the statserv_start / statserv_close routines.
132 Routine zget_SearchRequest and zget_PresentRequest fills
133 resultSetName/Id member with "default" instead of "Default".
135 Fixed memory leak in server. Request queue member wasn't freed.
137 Fixed nmem_exit so that memory is freed.
141 Revised the CCL parser utility to be thread safe.
143 Added function, oid_ent_to_oid, to replace the function
144 oid_getoidbyent, which is not thread safe.
146 * Added nmem_init and nmem_exit to initialize and release
147 NMEM resources. Function nmem_init should be called once in the
148 initial thread before NMEM/ODR is used. statserv.c and client.c
149 have been changed accordingly. The change was necessary to make
150 NMEM thread safe. The NMEM memory pool is shared amongst threads
151 in a process. Unix-based applications will still work fine without
154 Added NT Services interface for the the Z39.50 (statserv) Server.
155 Refer to the ztest.c source on the usage.
157 Windows 95/NT port using MSVC5.0. Project files are included in the
160 * Defined new 'global' handle for the retrieval (data1) system. The
161 new handled, data1_handle, describes the state of the data1 system.
162 This handle is passed as first argument to virtually all
163 data1 related routines. The functions data1_create and data1_destroy
164 creates and destroys a data1 handle respectively.
166 Added ODR encode stream member to all backend request structures
167 init, search, scan etc. This stream should be used to allocate all
168 memory used for the response when thread safe operation is needed.
170 Changed the comstack utility, cs_addstr, to be thread safe. The
171 returned hostname string returned by the function is now part the
174 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
175 function. The cs_straddr takes a COMSTACK handle as argument, so this
176 function must be used after cs_create and before bind/connect.
177 This function is thread safe.
179 Moved test server to 'ztest' directory - generic server code still
180 in 'server' directory.
182 Made prefix query (pquery.c) utility thread safe.
184 Added new function modifier YAZ_EXPORT to 'export' public DLL
185 functions when using windows (see include/yconfig.h).
187 Added definitions to the OID database (util/oid.c) (RVDM).
189 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
191 Added call to ccl_rpn_delete in client program.
193 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
194 release of RPN structure.
196 Added support for C++, headers uses extern "C" for public definitions.
197 With input from RVDM.
199 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
200 Thanks to Ronald van der Meer (RVDM).
202 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
204 Added support for private extensions to the OID database
205 (oid_setprivateoids()). Thanks to RVDM.
207 Added optional, physical ANY (key replication)
209 Fixed null-reference problem in GRS-1 output filter.
211 Proximity operator added to Prefix Query Format (PQF).
213 In test client command "base" accepts multiple databases.
215 Fixed bug in cs_close stack that caused trouble with WINSOCK.
219 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
221 Smallish bug-fixes in the new encoders/decoders (explain).
223 Bug fixed in DeleteRequest.
225 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
227 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
229 Added SOIF syntax (using private OID for now) to retrieval module and client.
231 Added Update extended service.
233 Added SearchResult-1 additional info structure.
235 Added optional CCL (ISO8777) interpreter as separate module. Available
238 --- 1.2 1996/6/10 (1st anniversary release)
240 Added Summary record syntax. Lightly tested.
242 Added OPAC record syntax. Untested.
244 Added ResourceReport service encoders/decoders. Untested.
246 Fixed bug in z_Unit - wrong tagging on unitSystem.
248 Fixed bug in the DiagRecs decoder.
250 Added options for max PDU size and session timeout to frontend-server.
252 Added documentation of query-language parsers and other supporting utilities.
254 [frontend-server] Added Attribute set to the bend_scanrequest API.
256 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
257 surrogate diagnostics were generated.
259 [retrieval] Allow multiple local values for attribute.
261 [retrieval] Allow multiple attributes per element in .abs files. index type.
263 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
267 Minor changes, mostly specific to Zebra's requirements (retrieval)
271 Repaired bug in frontend server when running multiple listening
272 endpoints in dynamic mode.
274 z_External() now won't break if a known, ASN.1 value comes encapsulated
275 in an octet-string. The value will pass through unmodified in an Odr_oct.
277 Added a bit of code to the demo client to decode & display
278 ASN.1-structured records represented in the octet-aligned branch of
279 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
281 Added z_ext_getentbyref() to the ASN module. Doc updated.
283 * Completed the SCAN definition in the ASN module. This may break SCAN
284 code based on older YAZ-versions at compile-time. The fix is easy -
287 * Added 'displayTerm' and OtherInformation to the TermInfo structure
288 under the SCAN definition. Remember to initialize this, server-people.
290 Comstack should now support the WAIS protocol in TCP/IP mode. Note
291 that this does not extend to ODR and ASN.
293 Comstack allows insertion of established socket (primarily for
294 inetd-operation of servers). Doc updated.
296 Front-end server can now start from the inetd in TCP mode. Doc
303 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
304 the rank and record number.
306 Adjustments to the frontend server.
308 Fixed diagnostic BER dumper. It ignored the file argument.
312 Various changes to retrieval module.
314 Changed the union discriminators of the protocol files from enums to
315 ints paired with #defines.
317 *Changed oident.class to oident.oclass to avoid a reserved word in C++
320 *Changed operator in the RPN structure to 'roperator', again to avoid a
323 Fixed problems in Explain decoders/encoders.
327 Memory bug in log module fixed.
331 Occasional malloc() of 0 bytes fixed in d1_espec.c.
333 Bug in Explain DatabaseInfo module fixed.
335 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
339 The shift to v1.0 signals that we now consider the *core* functionality
340 of YAZ reasonably stable (the core being more or less equivalent to
341 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
342 tested (Explain not at all - though that will happen soonish).
344 Minor changes to code to support Windows port.
346 Various minor changes after we're getting to use GRS-1 & co. more.
348 Added Espec-1 format.
350 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
351 of the protocol and it cannot be selected when encoding (maps into 'string'
352 when decoding). Needed to talk to some servers.
354 Demo client can request simple element set names.
356 Added Diagnostic Format encoders/decoders.
358 Added simple Close handling to frontend server (no hooks for resource
359 reporting yet), and demonstration client.
361 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
365 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
366 handled incorrectly when records were requested in the searchResponse. This
367 will only affect you if you use the frontend-server.
369 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
370 Test-client will ask for and print GRS1. Ztest will return dummy records
373 Added Explain encoders/decoders to the service-level API. Untested.
375 Added Extended Services: Item Order encoders and decoders to the Service-
376 level API. Untested. We could use a recent copy of the pertinent bits
377 of the ILL protocol to add those bits.
379 Added diagnostic format 1 encoders/decoders to the service-level API.
382 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
383 odr_cons.c, which causes a more correct output.
385 Fixed handling of searchRequest in frontend server. NextResultSetPosition
386 was always set to 0 when no records were requested in the searchRequest.
388 * Added better external-handling. This shouldn't harm old code that
389 *encodes* externals. It can break code that looks for a
390 'single-ASN1-type' representation, since those types that are known
391 are now decoded immediately. Look at the SUTRS sample code in
392 seshigh.c and client.c. Documentation updated.
394 Handling of structured records in bend_fetchresponse. Length -1 marks
395 structured record, type is deduced from format field.
398 Fairly quick maintenance release to add SUTRS support.
400 Fixed handling of SUTRS records in the demonstration client.
402 * Added format field to the bend_fetchrequest and bend_fetchresponce
403 structures of the backend API (frontend server). When the record is
404 returned, the value of the format field is mapped to an OID. The
405 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
406 of the record. The special value VAL_NONE in the bend_request means
407 that no specific format was requested by the client. Documentation
408 updated accordingly. Test server (ztest) will return a fixed dummy
409 SUTRS record if your client requests SUTRS.
411 Documentation updated accordingly.
413 You can now set external libraries and RANLIB support in the top-level
417 First public release.