1 Added support for termsets - a result set of terms matching
4 Added support for raw retrieval. Element Set Name R forces the
5 text filter which returns the record in its original form.
7 Added numerical sort - triggered by structure=numeric (4=109).
9 Remote record import using Z39.50 Extended Services and Segments.
11 Fixed bug where updating a database with user-defined attributes
12 could corrupt the register (bad storeKeys).
14 Multi-threaded version.
16 Fixed bug regarding proximity.
18 Documentation updates.
20 Fixed bug in record retrieval module that occured on 64-bit OSF
25 Fixed bug in makefile for WIN32.
27 Fixed bug in configure script - used bash-specific features.
31 The software was split in two products Zebra (for testing,
32 non-profit use) and the commercial product Z'mbol. Zebra no
33 longer supports INDEX UPDATES, i.e. zebraidx should be invoked only
34 once for each register. Refer to LICENSE.zebra for more info.
36 Added support for multiple records in one file for filter grs.sgml.
38 Changed record index structure. New layout is incompatible with
39 previous releases. Added setting "recordcompression" to control
40 compression of records. Possible values are "none" (no
41 compression) and bzip2 (compression using libbz2).
43 Added XML transfer syntax support for retrieval of structured records.
44 Schema in CompSpec is recognised in retrieval of structured records.
46 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
47 that fails, the filter reads the file <filt>.flt (regx style filter).
49 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
50 Zebra's configure script automatically attempts to locate Tcl. For
51 manual Tcl configuration use option --with-tclconfig=<path> to specify
52 where Tcl's library files are located.
54 Implemented "compression" of Dictionary and ISAM system. Dictionary
57 Added "tagsysno" directive to zebra.cfg to control under which tag the
58 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
61 Added "tagrank" as above.
63 Changed file naming scheme for register files from <name>.mf.<no> to
66 Implemented "position"-flag for register type (as defined in
67 default.idx). When set to zero no position (or seqence number) is
68 saved in register for each word occurrence, thus saving some register
71 Implemented database mapping. Using mapdb one can specify a database
72 to be mapped to one or more physical databases. Usage:
73 mapdb <fromdb> <todb> ..
75 Added SOIF-filter. Thanks to Peter Valkenburg.
77 For the regx-filter "end element -record" may trigger a mark-of-record
78 if outer level is reached.
80 Tag sets may be typed in the reference to it. From the .abs-file the
81 "tagset" directive takes a third optional integer type for the tag set
82 referenced. From a .tag-file the "include" directive takes a third
83 optional type as well. The old "type" directive in the tag set itself
84 is still recognized but acts as the default type for the tag set.
86 Zebra supports the specification of arbitrary attributes sets, schemas
87 and tag sets, because of the change in YAZ' OID management system.
89 Fixed bug in Sort that caused it NOT to use character mapping as it
92 Zebra now uses GNU configure to generate Makefile(s).
94 Added un-optimised support for left and left/right truncation attributes.
96 Added support for relational operators on text when using RPN queries.
98 Added support for sort specifications in RPN queries. Type 7 specifies
99 'sort' where value 1=ascending, value 2=descending. The use attribute
100 specifies the field criteria as usual. The term specifies priority
101 where 0=first, 1=second, ...
103 Changed the way use attributes are specified in the recordId
106 Maximum number of databases in one Zebra register increased.
108 New setting, databasePath, which specifies that first directory during
109 update traversal is the database name (instead of a fixed one).
111 New setting, explainDatabase, which specifies that databases are
114 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
116 Implemented EXPLAIN database maintenance. Zebra automatically
117 generate - and update CategoryList, TargetInfo, DatabaseInfo,
118 AttributeSetInfo and AttributeDetails records at this stage. The
119 records may be transferred as GRS-1, SUTRS or Explain.
121 Fixed register spec so that colon isn't treated as size separator
122 unless followed by [0-9+-] in order to allow DOS drive specifications.
124 Fixed two bugs in ISAMC system.
126 Changed the way Zebra keeps its maintenance information about attribute
127 sets, available attributes, etc.. Records in "SGML" notation using an
128 EXPLAIN schema is now used when appropriate.
130 Bug fix: Index didn't handle update/insert/delete of the same record
131 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
132 first occurence of a record is considered.
134 Most searches now return correct number of hits.
136 New modular ranking system. Interested programmers are encouraged to
137 inspect rank1.c and improve the algorithm.
139 Bug fix: Lock files weren't removed as they should on NT.
141 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
142 specify a "sort register". Refer to the gils sample records which refer
143 to index type "s" which is specified as "sort" in the default.idx file.
144 Each sort criteria can either be Ascending or Descending and at most
145 three sort elements can be specified.
147 Bug fix: Character mapping didn't work for text files.
151 Simple ranked searches now return correct number of hits.
153 The test option (-s) only makes a read-lock on the index as well
154 as using read-only operations anywhere.
156 Moved towards generic character mapping. Configuration file default.idx
157 specifies character map files for register types w, p, u, etc.
159 Implemented "begin variant" for the sgml.regx - filter.
161 Fixed a few memory leaks.
163 Added support for C++, headers uses extern "C" for public definitions.
165 Bug fix: The show records facility (-s) only displayed information for
166 the first record in a file (and not for every record in the file).
168 Added option "-f <n>" to limit the logging of record operations. After
169 <n> records has been processed no logging is performed (unless errors
172 Bug fix: the compressed ISAM system didn't handle update operations
175 Added setting, "maxResultSetSize", to hold the number of records to
176 save in a result set.
178 Bug fix: Complete phrase did't work for search operations.
180 Bug fix: temporary result sets weren't deleted.
182 Reduced disk space for saved keys (storeKeys = 1).
184 Added optional, physical ANY (key replication)
186 Implemented proximity operator in search.
188 Bug fix: the path name buffers used by file match traversal routines
189 have been extended to support long file names.
191 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
192 configuration file. The resulting register without "storeKeys" is about
193 half the size, and the memory used by zebraidx during phase 2 (merge) is
194 reduced to a minimum.
196 Reworked the way Regexp-2 queries with error tolerance are handled and
197 specified. The documentation has been updated accordingly.
199 Bug fix: Zebrasrv didn't search correctly when queries contained masking
200 characters. This bug was introduced in 1.0a8.
202 Zebrasrv now tag records with the proper database name.
204 New settings, memMax and keyTmpDir.
206 Changed name of setting lockDir (previously called lockPath) and
207 setTmpDir (previously called tempSetPath).
209 Generalized and changed record type specifications. In short, there are:
211 grs.sgml structured, "SGML-like" syntax
212 grs.regx.<filter> structured, Regular expression filter
213 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
214 is the name of an abstract syntax file.
215 Bug fix: Result sets weren't sorted in operations involving boolean
216 operations with "ranked" operands.
220 Added national character-handling subsystem.
224 Small modifications to input filters and profiles.
226 Added support for SOIF syntax (with private OID).
230 Fixed buffer-size problem in indexing.
232 Added compression to temporary files for updating.
234 Added phrase registers.
236 Added dynamic mapping of search attribute to multiple termlists (ANY).
238 Scan support in multiple databases/registers.
240 Configuration settings are case-insensitive and single dash (-)
241 characters are ignored in comparisons.
243 The index processing ignores empty files - warning given.
245 New option to zebraidx (-V) displays version information.
249 Fixed problem in file-update system.
251 Fixed problem in shadow system; register was sometimes corrupted after
256 Fixed problems in the ISAM subsystem. Caused difficulties when updating
259 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
260 the rank and record number.
262 Fixed bug in the isam subsystem - caused a malfunction when accessing
263 words which occurred more than 10000 times.
265 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
268 Server can now run under inetd. Use option -i, and -w <directory> to
269 set working directory to desired location.
271 New zebraidx command: clean - removes temporary shadow files.
273 Fixed bug in ISAM system. Occurred rarely during register updates.
275 Logging during index merge phase is improved. The remaining running
278 Temporary files generated by zebraidx are removed after each run.
280 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
281 when doing scan operations in dictionaries with European characters.
285 A whole slew of updates, to make the first publicized release. Get the doc
290 Memory-problems in ISAM fixed. More blocktypes added to the default setup
291 to increase performance on larger databases.
293 Various minor changes in data management system.
297 A couple of portability-problems resolved.
299 Changed some malloc() to xmalloc().