1 Possible compatibility problems with earlier versions marked with '*'.
3 Implemented the new structured date and time definition as approved
4 by the ZIG. Added schemaId element to the specificTag in Espec-1
5 (also approved at the last ZIG). Thanks to RVDM.
7 Added some Object identifiers (RVDM).
9 Changed the Update Extended Service (RVDM).
11 Added command "refid" to client which specifies referenceId for
12 the following requests.
14 Implemented extended service handling for server. See ztest.c
15 for an example as well as backend.h. New handlers are registerd
18 * Changed interface for sort in server.
20 Added new members to statserv_options_block. It allows a server
21 to read options from another source than just the command line. Thanks
24 * Changed definition of Z_Triple in file prt-grs.h - member boolean
25 renamed to zboolean. Some C++ compilers complained about the name.
27 Minor changes to gils.abs. Added index 's' (sort) on title
28 and date/time-last-modified.
32 Fixed bug in server library regarding inetd mode (-i). This bug
33 was introduced by release 1.4.
37 Added sort facility in client and backend server interface.
39 Fixed problem with dependencies in Makefile(s).
41 Fixed bugs for encoders/decoders of extended services and
44 Implemented sub-tree feature for schemas. Sub-trees are
45 referenced in *.abs-files. See explain.abs for an example
46 of the use of this feature.
48 Modified bib1.att; local attributes for ANY didn't include
49 ANY itself (only affects use of the retrieval module).
51 Fixed bug in plain SGML reader in function data1_read_node:
52 tags with prefix "var" was incorrectly interpreted as variants.
54 Added feature "sub-schemas" to enable references to - and definitions
55 of - group of elements.
57 * Removed member parent from type data1_element (in data1.h).
59 Implemented function odr_nullval() that returns the value of
62 * Removed member num_children from data1_node (in data1.h).
64 Made NT service interface part of the server library. The
65 function statserv_main uses the NT service when required and
66 calls the statserv_start / statserv_close routines.
68 Routine zget_SearchRequest and zget_PresentRequest fills
69 resultSetName/Id member with "default" instead of "Default".
71 Fixed memory leak in server. Request queue member wasn't freed.
73 Fixed nmem_exit so that memory is freed.
77 Revised the CCL parser utility to be thread safe.
79 Added function, oid_ent_to_oid, to replace the function
80 oid_getoidbyent, which is not thread safe.
82 * Added nmem_init and nmem_exit to initialize and release
83 NMEM resources. Function nmem_init should be called once in the
84 initial thread before NMEM/ODR is used. statserv.c and client.c
85 have been changed accordingly. The change was necessary to make
86 NMEM thread safe. The NMEM memory pool is shared amongst threads
87 in a process. Unix-based applications will still work fine without
90 Added NT Services interface for the the Z39.50 (statserv) Server.
91 Refer to the ztest.c source on the usage.
93 Windows 95/NT port using MSVC5.0. Project files are included in the
96 * Defined new 'global' handle for the retrieval (data1) system. The
97 new handled, data1_handle, describes the state of the data1 system.
98 This handle is passed as first argument to virtually all
99 data1 related routines. The functions data1_create and data1_destroy
100 creates and destroys a data1 handle respectively.
102 Added ODR encode stream member to all backend request structures
103 init, search, scan etc. This stream should be used to allocate all
104 memory used for the response when thread safe operation is needed.
106 Changed the comstack utility, cs_addstr, to be thread safe. The
107 returned hostname string returned by the function is now part the
110 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
111 function. The cs_straddr takes a COMSTACK handle as argument, so this
112 function must be used after cs_create and before bind/connect.
113 This function is thread safe.
115 Moved test server to 'ztest' directory - generic server code still
116 in 'server' directory.
118 Made prefix query (pquery.c) utility thread safe.
120 Added new function modifier YAZ_EXPORT to 'export' public DLL
121 functions when using windows (see include/yconfig.h).
123 Added definitions to the OID database (util/oid.c) (RVDM).
125 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
127 Added call to ccl_rpn_delete in client program.
129 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
130 release of RPN structure.
132 Added support for C++, headers uses extern "C" for public definitions.
133 With input from RVDM.
135 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
136 Thanks to Ronald van der Meer (RVDM).
138 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
140 Added support for private extensions to the OID database
141 (oid_setprivateoids()). Thanks to RVDM.
143 Added optional, physical ANY (key replication)
145 Fixed null-reference problem in GRS-1 output filter.
147 Proximity operator added to Prefix Query Format (PQF).
149 In test client command "base" accepts multiple databases.
151 Fixed bug in cs_close stack that caused trouble with WINSOCK.
155 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
157 Smallish bug-fixes in the new encoders/decoders (explain).
159 Bug fixed in DeleteRequest.
161 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
163 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
165 Added SOIF syntax (using private OID for now) to retrieval module and client.
167 Added Update extended service.
169 Added SearchResult-1 additional info structure.
171 Added optional CCL (ISO8777) interpreter as separate module. Available
174 --- 1.2 1996/6/10 (1st anniversary release)
176 Added Summary record syntax. Lightly tested.
178 Added OPAC record syntax. Untested.
180 Added ResourceReport service encoders/decoders. Untested.
182 Fixed bug in z_Unit - wrong tagging on unitSystem.
184 Fixed bug in the DiagRecs decoder.
186 Added options for max PDU size and session timeout to frontend-server.
188 Added documentation of query-language parsers and other supporting utilities.
190 [frontend-server] Added Attribute set to the bend_scanrequest API.
192 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
193 surrogate diagnostics were generated.
195 [retrieval] Allow multiple local values for attribute.
197 [retrieval] Allow multiple attributes per element in .abs files. index type.
199 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
203 Minor changes, mostly specific to Zebra's requirements (retrieval)
207 Repaired bug in frontend server when running multiple listening
208 endpoints in dynamic mode.
210 z_External() now won't break if a known, ASN.1 value comes encapsulated
211 in an octet-string. The value will pass through unmodified in an Odr_oct.
213 Added a bit of code to the demo client to decode & display
214 ASN.1-structured records represented in the octet-aligned branch of
215 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
217 Added z_ext_getentbyref() to the ASN module. Doc updated.
219 * Completed the SCAN definition in the ASN module. This may break SCAN
220 code based on older YAZ-versions at compile-time. The fix is easy -
223 * Added 'displayTerm' and OtherInformation to the TermInfo structure
224 under the SCAN definition. Remember to initialize this, server-people.
226 Comstack should now support the WAIS protocol in TCP/IP mode. Note
227 that this does not extend to ODR and ASN.
229 Comstack allows insertion of established socket (primarily for
230 inetd-operation of servers). Doc updated.
232 Front-end server can now start from the inetd in TCP mode. Doc
239 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
240 the rank and record number.
242 Adjustments to the frontend server.
244 Fixed diagnostic BER dumper. It ignored the file argument.
248 Various changes to retrieval module.
250 Changed the union discriminators of the protocol files from enums to
251 ints paired with #defines.
253 *Changed oident.class to oident.oclass to avoid a reserved word in C++
256 *Changed operator in the RPN structure to 'roperator', again to avoid a
259 Fixed problems in Explain decoders/encoders.
263 Memory bug in log module fixed.
267 Occasional malloc() of 0 bytes fixed in d1_espec.c.
269 Bug in Explain DatabaseInfo module fixed.
271 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
275 The shift to v1.0 signals that we now consider the *core* functionality
276 of YAZ reasonably stable (the core being more or less equivalent to
277 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
278 tested (Explain not at all - though that will happen soonish).
280 Minor changes to code to support Windows port.
282 Various minor changes after we're getting to use GRS-1 & co. more.
284 Added Espec-1 format.
286 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
287 of the protocol and it cannot be selected when encoding (maps into 'string'
288 when decoding). Needed to talk to some servers.
290 Demo client can request simple element set names.
292 Added Diagnostic Format encoders/decoders.
294 Added simple Close handling to frontend server (no hooks for resource
295 reporting yet), and demonstration client.
297 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
301 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
302 handled incorrectly when records were requested in the searchResponse. This
303 will only affect you if you use the frontend-server.
305 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
306 Test-client will ask for and print GRS1. Ztest will return dummy records
309 Added Explain encoders/decoders to the service-level API. Untested.
311 Added Extended Services: Item Order encoders and decoders to the Service-
312 level API. Untested. We could use a recent copy of the pertinent bits
313 of the ILL protocol to add those bits.
315 Added diagnostic format 1 encoders/decoders to the service-level API.
318 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
319 odr_cons.c, which causes a more correct output.
321 Fixed handling of searchRequest in frontend server. NextResultSetPosition
322 was always set to 0 when no records were requested in the searchRequest.
324 * Added better external-handling. This shouldn't harm old code that
325 *encodes* externals. It can break code that looks for a
326 'single-ASN1-type' representation, since those types that are known
327 are now decoded immediately. Look at the SUTRS sample code in
328 seshigh.c and client.c. Documentation updated.
330 Handling of structured records in bend_fetchresponse. Length -1 marks
331 structured record, type is deduced from format field.
334 Fairly quick maintenance release to add SUTRS support.
336 Fixed handling of SUTRS records in the demonstration client.
338 * Added format field to the bend_fetchrequest and bend_fetchresponce
339 structures of the backend API (frontend server). When the record is
340 returned, the value of the format field is mapped to an OID. The
341 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
342 of the record. The special value VAL_NONE in the bend_request means
343 that no specific format was requested by the client. Documentation
344 updated accordingly. Test server (ztest) will return a fixed dummy
345 SUTRS record if your client requests SUTRS.
347 Documentation updated accordingly.
349 You can now set external libraries and RANLIB support in the top-level
353 First public release.