1 Remote record import using Z39.50 Extended Services and Segments.
3 Multi-threaded version.
5 Fixed bug regarding proximity.
9 Fixed bug in record retrieval module that occured on 64-bit OSF
14 Fixed bug in makefile for WIN32.
16 Fixed bug in configure script - used bash-specific features.
20 The software was split in two products Zebra (for testing,
21 non-profit use) and the commercial product Z'mbol. Zebra no
22 longer supports INDEX UPDATES, i.e. zebraidx should be invoked only
23 once for each register. Refer to LICENSE.zebra for more info.
25 Added support for multiple records in one file for filter grs.sgml.
27 Changed record index structure. New layout is incompatible with
28 previous releases. Added setting "recordcompression" to control
29 compression of records. Possible values are "none" (no
30 compression) and bzip2 (compression using libbz2).
32 Added XML transfer syntax support for retrieval of structured records.
33 Schema in CompSpec is recognised in retrieval of structured records.
35 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
36 that fails, the filter reads the file <filt>.flt (regx style filter).
38 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
39 Zebra's configure script automatically attempts to locate Tcl. For
40 manual Tcl configuration use option --with-tclconfig=<path> to specify
41 where Tcl's library files are located.
43 Implemented "compression" of Dictionary and ISAM system. Dictionary
46 Added "tagsysno" directive to zebra.cfg to control under which tag the
47 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
50 Added "tagrank" as above.
52 Changed file naming scheme for register files from <name>.mf.<no> to
55 Implemented "position"-flag for register type (as defined in
56 default.idx). When set to zero no position (or seqence number) is
57 saved in register for each word occurrence, thus saving some register
60 Implemented database mapping. Using mapdb one can specify a database
61 to be mapped to one or more physical databases. Usage:
62 mapdb <fromdb> <todb> ..
64 Added SOIF-filter. Thanks to Peter Valkenburg.
66 For the regx-filter "end element -record" may trigger a mark-of-record
67 if outer level is reached.
69 Tag sets may be typed in the reference to it. From the .abs-file the
70 "tagset" directive takes a third optional integer type for the tag set
71 referenced. From a .tag-file the "include" directive takes a third
72 optional type as well. The old "type" directive in the tag set itself
73 is still recognized but acts as the default type for the tag set.
75 Zebra supports the specification of arbitrary attributes sets, schemas
76 and tag sets, because of the change in YAZ' OID management system.
78 Fixed bug in Sort that caused it NOT to use character mapping as it
81 Zebra now uses GNU configure to generate Makefile(s).
83 Added un-optimised support for left and left/right truncation attributes.
85 Added support for relational operators on text when using RPN queries.
87 Added support for sort specifications in RPN queries. Type 7 specifies
88 'sort' where value 1=ascending, value 2=descending. The use attribute
89 specifies the field criteria as usual. The term specifies priority
90 where 0=first, 1=second, ...
92 Changed the way use attributes are specified in the recordId
95 Maximum number of databases in one Zebra register increased.
97 New setting, databasePath, which specifies that first directory during
98 update traversal is the database name (instead of a fixed one).
100 New setting, explainDatabase, which specifies that databases are
103 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
105 Implemented EXPLAIN database maintenance. Zebra automatically
106 generate - and update CategoryList, TargetInfo, DatabaseInfo,
107 AttributeSetInfo and AttributeDetails records at this stage. The
108 records may be transferred as GRS-1, SUTRS or Explain.
110 Fixed register spec so that colon isn't treated as size separator
111 unless followed by [0-9+-] in order to allow DOS drive specifications.
113 Fixed two bugs in ISAMC system.
115 Changed the way Zebra keeps its maintenance information about attribute
116 sets, available attributes, etc.. Records in "SGML" notation using an
117 EXPLAIN schema is now used when appropriate.
119 Bug fix: Index didn't handle update/insert/delete of the same record
120 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
121 first occurence of a record is considered.
123 Most searches now return correct number of hits.
125 New modular ranking system. Interested programmers are encouraged to
126 inspect rank1.c and improve the algorithm.
128 Bug fix: Lock files weren't removed as they should on NT.
130 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
131 specify a "sort register". Refer to the gils sample records which refer
132 to index type "s" which is specified as "sort" in the default.idx file.
133 Each sort criteria can either be Ascending or Descending and at most
134 three sort elements can be specified.
136 Bug fix: Character mapping didn't work for text files.
140 Simple ranked searches now return correct number of hits.
142 The test option (-s) only makes a read-lock on the index as well
143 as using read-only operations anywhere.
145 Moved towards generic character mapping. Configuration file default.idx
146 specifies character map files for register types w, p, u, etc.
148 Implemented "begin variant" for the sgml.regx - filter.
150 Fixed a few memory leaks.
152 Added support for C++, headers uses extern "C" for public definitions.
154 Bug fix: The show records facility (-s) only displayed information for
155 the first record in a file (and not for every record in the file).
157 Added option "-f <n>" to limit the logging of record operations. After
158 <n> records has been processed no logging is performed (unless errors
161 Bug fix: the compressed ISAM system didn't handle update operations
164 Added setting, "maxResultSetSize", to hold the number of records to
165 save in a result set.
167 Bug fix: Complete phrase did't work for search operations.
169 Bug fix: temporary result sets weren't deleted.
171 Reduced disk space for saved keys (storeKeys = 1).
173 Added optional, physical ANY (key replication)
175 Implemented proximity operator in search.
177 Bug fix: the path name buffers used by file match traversal routines
178 have been extended to support long file names.
180 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
181 configuration file. The resulting register without "storeKeys" is about
182 half the size, and the memory used by zebraidx during phase 2 (merge) is
183 reduced to a minimum.
185 Reworked the way Regexp-2 queries with error tolerance are handled and
186 specified. The documentation has been updated accordingly.
188 Bug fix: Zebrasrv didn't search correctly when queries contained masking
189 characters. This bug was introduced in 1.0a8.
191 Zebrasrv now tag records with the proper database name.
193 New settings, memMax and keyTmpDir.
195 Changed name of setting lockDir (previously called lockPath) and
196 setTmpDir (previously called tempSetPath).
198 Generalized and changed record type specifications. In short, there are:
200 grs.sgml structured, "SGML-like" syntax
201 grs.regx.<filter> structured, Regular expression filter
202 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
203 is the name of an abstract syntax file.
204 Bug fix: Result sets weren't sorted in operations involving boolean
205 operations with "ranked" operands.
209 Added national character-handling subsystem.
213 Small modifications to input filters and profiles.
215 Added support for SOIF syntax (with private OID).
219 Fixed buffer-size problem in indexing.
221 Added compression to temporary files for updating.
223 Added phrase registers.
225 Added dynamic mapping of search attribute to multiple termlists (ANY).
227 Scan support in multiple databases/registers.
229 Configuration settings are case-insensitive and single dash (-)
230 characters are ignored in comparisons.
232 The index processing ignores empty files - warning given.
234 New option to zebraidx (-V) displays version information.
238 Fixed problem in file-update system.
240 Fixed problem in shadow system; register was sometimes corrupted after
245 Fixed problems in the ISAM subsystem. Caused difficulties when updating
248 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
249 the rank and record number.
251 Fixed bug in the isam subsystem - caused a malfunction when accessing
252 words which occurred more than 10000 times.
254 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
257 Server can now run under inetd. Use option -i, and -w <directory> to
258 set working directory to desired location.
260 New zebraidx command: clean - removes temporary shadow files.
262 Fixed bug in ISAM system. Occurred rarely during register updates.
264 Logging during index merge phase is improved. The remaining running
267 Temporary files generated by zebraidx are removed after each run.
269 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
270 when doing scan operations in dictionaries with European characters.
274 A whole slew of updates, to make the first publicized release. Get the doc
279 Memory-problems in ISAM fixed. More blocktypes added to the default setup
280 to increase performance on larger databases.
282 Various minor changes in data management system.
286 A couple of portability-problems resolved.
288 Changed some malloc() to xmalloc().