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