1 Possible compatibility problems with earlier versions marked with '*'.
3 Implemented sub-tree feature for schemas. Sub-trees are
4 referenced in *.abs-files. See explain.abs for an example
5 of the use of this feature.
7 Modified bib1.att; local attributes for ANY didn't include
8 ANY itself (only affects use of the retrieval module).
10 Fixed bug in plain SGML reader in function data1_read_node:
11 tags with prefix "var" was incorrectly interpreted as variants.
13 Added feature "sub-schemas" to enable references to - and definitions
14 of - group of elements.
16 * Removed member parent from type data1_element (in data1.h).
18 Implemented function odr_nullval() that returns the value of
21 * Removed member num_children from data1_node (in data1.h).
23 Made NT service interface part of the server library. The
24 function statserv_main uses the NT service when required and
25 calls the statserv_start / statserv_close routines.
27 Routine zget_SearchRequest fills resultSetName member with "default"
30 Fixed memory leak in server. Request queue member wasn't freed.
32 Fixed nmem_exit so that memory is freed.
36 Revised the CCL parser utility to be thread safe.
38 Added function, oid_ent_to_oid, to replace the function
39 oid_getoidbyent, which is not thread safe.
41 * Added nmem_init and nmem_exit to initialize and release
42 NMEM resources. Function nmem_init should be called once in the
43 initial thread before NMEM/ODR is used. statserv.c and client.c
44 have been changed accordingly. The change was necessary to make
45 NMEM thread safe. The NMEM memory pool is shared amongst threads
46 in a process. Unix-based applications will still work fine without
49 Added NT Services interface for the the Z39.50 (statserv) Server.
50 Refer to the ztest.c source on the usage.
52 Windows 95/NT port using MSV5.0. Project files are included in the
55 * Defined new 'global' handle for the retrieval (data1) system. The
56 new handled, data1_handle, describes the state of the data1 system.
57 This handle is passed as first argument to virtually all
58 data1 related routines. The functions data1_create and data1_destroy
59 creates and destroys a data1 handle respectively.
61 Added ODR encode stream member to all backend request structures
62 init, search, scan etc. This stream should be used to allocate all
63 memory used for the response when thread safe operation is needed.
65 Changed the comstack utility, cs_addstr, to be thread safe. The
66 returned hostname string returned by the function is now part the
69 Added comstack utility, cs_straddr, which replaces the tcpip_strtoaddr
70 function. The cs_straddr takes a COMSTACK handle as argument, so this
71 function must be used after cs_create and before bind/connect.
72 This function is thread safe.
74 Moved test server to 'ztest' directory - generic server code still
75 in 'server' directory.
77 Made prefix query (pquery.c) utility thread safe.
79 Added new function modifier YAZ_EXPORT to 'export' public DLL
80 functions when using windows (see include/yconfig.h).
82 Added definitions to the OID database (util/oid.c) (RVDM).
84 Added new BIB-1 diagnostic messages to the handler diagbib1_str.
86 Added call to ccl_rpn_delete in client program.
88 Added ODR argument to ccl_rpn_query and ccl_scan_query to provide
89 release of RPN structure.
91 Added support for C++, headers uses extern "C" for public definitions.
94 In handling of SEQUENCE OF: Counter set to zero when SEQUENCE OF is absent.
95 Thanks to Ronald van der Meer (RVDM).
97 Added initializers (zget_ routines) for a number of PDUs. Thanks to RVDM.
99 Added support for private extensions to the OID database
100 (oid_setprivateoids()). Thanks to RVDM.
102 Added optional, physical ANY (key replication)
104 Fixed null-reference problem in GRS-1 output filter.
106 Proximity operator added to Prefix Query Format (PQF).
108 In test client command "base" accepts multiple databases.
110 Fixed bug in cs_close stack that caused trouble with WINSOCK.
114 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
116 Smallish bug-fixes in the new encoders/decoders (explain).
118 Bug fixed in DeleteRequest.
120 Fixed tagging bug of type 101 query in SearchRequest-Query PDU encoder/decoder.
122 Fixed tagging bug in ResourceReportResponse PDU encoder/decode.
124 Added SOIF syntax (using private OID for now) to retrieval module and client.
126 Added Update extended service.
128 Added SearchResult-1 additional info structure.
130 Added optional CCL (ISO8777) interpreter as separate module. Available
133 --- 1.2 1996/6/10 (1st anniversary release)
135 Added Summary record syntax. Lightly tested.
137 Added OPAC record syntax. Untested.
139 Added ResourceReport service encoders/decoders. Untested.
141 Fixed bug in z_Unit - wrong tagging on unitSystem.
143 Fixed bug in the DiagRecs decoder.
145 Added options for max PDU size and session timeout to frontend-server.
147 Added documentation of query-language parsers and other supporting utilities.
149 [frontend-server] Added Attribute set to the bend_scanrequest API.
151 [frontend-server] NextResultSetPosition was sometimes set incorrectly when
152 surrogate diagnostics were generated.
154 [retrieval] Allow multiple local values for attribute.
156 [retrieval] Allow multiple attributes per element in .abs files. index type.
158 [retrieval] Added Summary tagset, abstract syntax, and d1-node/ASN filter.
162 Minor changes, mostly specific to Zebra's requirements (retrieval)
166 Repaired bug in frontend server when running multiple listening
167 endpoints in dynamic mode.
169 z_External() now won't break if a known, ASN.1 value comes encapsulated
170 in an octet-string. The value will pass through unmodified in an Odr_oct.
172 Added a bit of code to the demo client to decode & display
173 ASN.1-structured records represented in the octet-aligned branch of
174 the EXTERNAL CHOICE. Thanks to CAS for prodding us to finally do this.
176 Added z_ext_getentbyref() to the ASN module. Doc updated.
178 * Completed the SCAN definition in the ASN module. This may break SCAN
179 code based on older YAZ-versions at compile-time. The fix is easy -
182 * Added 'displayTerm' and OtherInformation to the TermInfo structure
183 under the SCAN definition. Remember to initialize this, server-people.
185 Comstack should now support the WAIS protocol in TCP/IP mode. Note
186 that this does not extend to ODR and ASN.
188 Comstack allows insertion of established socket (primarily for
189 inetd-operation of servers). Doc updated.
191 Front-end server can now start from the inetd in TCP mode. Doc
198 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
199 the rank and record number.
201 Adjustments to the frontend server.
203 Fixed diagnostic BER dumper. It ignored the file argument.
207 Various changes to retrieval module.
209 Changed the union discriminators of the protocol files from enums to
210 ints paired with #defines.
212 *Changed oident.class to oident.oclass to avoid a reserved word in C++
215 *Changed operator in the RPN structure to 'roperator', again to avoid a
218 Fixed problems in Explain decoders/encoders.
222 Memory bug in log module fixed.
226 Occasional malloc() of 0 bytes fixed in d1_espec.c.
228 Bug in Explain DatabaseInfo module fixed.
230 Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
234 The shift to v1.0 signals that we now consider the *core* functionality
235 of YAZ reasonably stable (the core being more or less equivalent to
236 Z39.50-1992). Some of the really nifty v3 stuff is still not heavily
237 tested (Explain not at all - though that will happen soonish).
239 Minor changes to code to support Windows port.
241 Various minor changes after we're getting to use GRS-1 & co. more.
243 Added Espec-1 format.
245 Added VisibleString field body type to GRS-1. It is illegal acc. to my copy
246 of the protocol and it cannot be selected when encoding (maps into 'string'
247 when decoding). Needed to talk to some servers.
249 Demo client can request simple element set names.
251 Added Diagnostic Format encoders/decoders.
253 Added simple Close handling to frontend server (no hooks for resource
254 reporting yet), and demonstration client.
256 Added cs_addrstr() command to COMSTACK to retrieve peer hostname/address.
260 Fixed bug in the frontend-server. The numberOfRecordsReturned field was
261 handled incorrectly when records were requested in the searchResponse. This
262 will only affect you if you use the frontend-server.
264 Added GRS-1 encoders/decoders to the service-level API. Lightly tested.
265 Test-client will ask for and print GRS1. Ztest will return dummy records
268 Added Explain encoders/decoders to the service-level API. Untested.
270 Added Extended Services: Item Order encoders and decoders to the Service-
271 level API. Untested. We could use a recent copy of the pertinent bits
272 of the ILL protocol to add those bits.
274 Added diagnostic format 1 encoders/decoders to the service-level API.
277 Moved pretty-printing of structure-wrappers ({..}) from odr_seq.c to
278 odr_cons.c, which causes a more correct output.
280 Fixed handling of searchRequest in frontend server. NextResultSetPosition
281 was always set to 0 when no records were requested in the searchRequest.
283 * Added better external-handling. This shouldn't harm old code that
284 *encodes* externals. It can break code that looks for a
285 'single-ASN1-type' representation, since those types that are known
286 are now decoded immediately. Look at the SUTRS sample code in
287 seshigh.c and client.c. Documentation updated.
289 Handling of structured records in bend_fetchresponse. Length -1 marks
290 structured record, type is deduced from format field.
293 Fairly quick maintenance release to add SUTRS support.
295 Fixed handling of SUTRS records in the demonstration client.
297 * Added format field to the bend_fetchrequest and bend_fetchresponce
298 structures of the backend API (frontend server). When the record is
299 returned, the value of the format field is mapped to an OID. The
300 value VAL_SUTRS will also cause a slightly different ASN.1 packaging
301 of the record. The special value VAL_NONE in the bend_request means
302 that no specific format was requested by the client. Documentation
303 updated accordingly. Test server (ztest) will return a fixed dummy
304 SUTRS record if your client requests SUTRS.
306 Documentation updated accordingly.
308 You can now set external libraries and RANLIB support in the top-level
312 First public release.