4 Multiple registers. New setting in resource 'root' that holds base
5 directory for register(s). A group a databases may be put in separate
6 register in directory root/reg by using db name 'reg/db1' ... 'reg/dbN'.
10 Fixes for Digital Unix
12 Implemented hits per term using USR:SearchResult-1.
14 New Zebra API. Locking system re-implemented.
16 --- 1.1.stable 2002/02/20
18 Rank weight can be controlled with attribute type 9. Default
19 value is 34. Recommended values between 1-36.
23 Updated for YAZ version 1.8.
25 Added support for termsets - a result set of terms matching
26 a given query. For @attr 8=<set> creates termset named <set>.
28 Added support for raw retrieval. Element Set Name R forces the
29 text filter which returns the record in its original form.
31 Added numerical sort - triggered by structure=numeric (4=109).
33 Remote record import using Z39.50 Extended Services and Segments.
35 Fixed bug where updating a database with user-defined attributes
36 could corrupt the register (bad storeKeys).
38 Multi-threaded version.
40 Fixed bug regarding proximity.
42 Documentation updates.
44 Fixed bug in record retrieval module that occured on 64-bit OSF
49 Fixed bug in makefile for WIN32.
51 Fixed bug in configure script - used bash-specific features.
55 The software was split in two products Zebra (for testing,
56 non-profit use) and the commercial product Z'mbol. Zebra no
57 longer supports INDEX UPDATES, i.e. zebraidx should be invoked only
58 once for each register. Refer to LICENSE.zebra for more info.
60 Added support for multiple records in one file for filter grs.sgml.
62 Changed record index structure. New layout is incompatible with
63 previous releases. Added setting "recordcompression" to control
64 compression of records. Possible values are "none" (no
65 compression) and bzip2 (compression using libbz2).
67 Added XML transfer syntax support for retrieval of structured records.
68 Schema in CompSpec is recognised in retrieval of structured records.
70 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
71 that fails, the filter reads the file <filt>.flt (regx style filter).
73 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
74 Zebra's configure script automatically attempts to locate Tcl. For
75 manual Tcl configuration use option --with-tclconfig=<path> to specify
76 where Tcl's library files are located.
78 Implemented "compression" of Dictionary and ISAM system. Dictionary
81 Added "tagsysno" directive to zebra.cfg to control under which tag the
82 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
85 Added "tagrank" as above.
87 Changed file naming scheme for register files from <name>.mf.<no> to
90 Implemented "position"-flag for register type (as defined in
91 default.idx). When set to zero no position (or seqence number) is
92 saved in register for each word occurrence, thus saving some register
95 Implemented database mapping. Using mapdb one can specify a database
96 to be mapped to one or more physical databases. Usage:
97 mapdb <fromdb> <todb> ..
99 Added SOIF-filter. Thanks to Peter Valkenburg.
101 For the regx-filter "end element -record" may trigger a mark-of-record
102 if outer level is reached.
104 Tag sets may be typed in the reference to it. From the .abs-file the
105 "tagset" directive takes a third optional integer type for the tag set
106 referenced. From a .tag-file the "include" directive takes a third
107 optional type as well. The old "type" directive in the tag set itself
108 is still recognized but acts as the default type for the tag set.
110 Zebra supports the specification of arbitrary attributes sets, schemas
111 and tag sets, because of the change in YAZ' OID management system.
113 Fixed bug in Sort that caused it NOT to use character mapping as it
116 Zebra now uses GNU configure to generate Makefile(s).
118 Added un-optimised support for left and left/right truncation attributes.
120 Added support for relational operators on text when using RPN queries.
122 Added support for sort specifications in RPN queries. Type 7 specifies
123 'sort' where value 1=ascending, value 2=descending. The use attribute
124 specifies the field criteria as usual. The term specifies priority
125 where 0=first, 1=second, ...
127 Changed the way use attributes are specified in the recordId
130 Maximum number of databases in one Zebra register increased.
132 New setting, databasePath, which specifies that first directory during
133 update traversal is the database name (instead of a fixed one).
135 New setting, explainDatabase, which specifies that databases are
138 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
140 Implemented EXPLAIN database maintenance. Zebra automatically
141 generate - and update CategoryList, TargetInfo, DatabaseInfo,
142 AttributeSetInfo and AttributeDetails records at this stage. The
143 records may be transferred as GRS-1, SUTRS or Explain.
145 Fixed register spec so that colon isn't treated as size separator
146 unless followed by [0-9+-] in order to allow DOS drive specifications.
148 Fixed two bugs in ISAMC system.
150 Changed the way Zebra keeps its maintenance information about attribute
151 sets, available attributes, etc.. Records in "SGML" notation using an
152 EXPLAIN schema is now used when appropriate.
154 Bug fix: Index didn't handle update/insert/delete of the same record
155 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
156 first occurence of a record is considered.
158 Most searches now return correct number of hits.
160 New modular ranking system. Interested programmers are encouraged to
161 inspect rank1.c and improve the algorithm.
163 Bug fix: Lock files weren't removed as they should on NT.
165 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
166 specify a "sort register". Refer to the gils sample records which refer
167 to index type "s" which is specified as "sort" in the default.idx file.
168 Each sort criteria can either be Ascending or Descending and at most
169 three sort elements can be specified.
171 Bug fix: Character mapping didn't work for text files.
175 Simple ranked searches now return correct number of hits.
177 The test option (-s) only makes a read-lock on the index as well
178 as using read-only operations anywhere.
180 Moved towards generic character mapping. Configuration file default.idx
181 specifies character map files for register types w, p, u, etc.
183 Implemented "begin variant" for the sgml.regx - filter.
185 Fixed a few memory leaks.
187 Added support for C++, headers uses extern "C" for public definitions.
189 Bug fix: The show records facility (-s) only displayed information for
190 the first record in a file (and not for every record in the file).
192 Added option "-f <n>" to limit the logging of record operations. After
193 <n> records has been processed no logging is performed (unless errors
196 Bug fix: the compressed ISAM system didn't handle update operations
199 Added setting, "maxResultSetSize", to hold the number of records to
200 save in a result set.
202 Bug fix: Complete phrase did't work for search operations.
204 Bug fix: temporary result sets weren't deleted.
206 Reduced disk space for saved keys (storeKeys = 1).
208 Added optional, physical ANY (key replication)
210 Implemented proximity operator in search.
212 Bug fix: the path name buffers used by file match traversal routines
213 have been extended to support long file names.
215 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
216 configuration file. The resulting register without "storeKeys" is about
217 half the size, and the memory used by zebraidx during phase 2 (merge) is
218 reduced to a minimum.
220 Reworked the way Regexp-2 queries with error tolerance are handled and
221 specified. The documentation has been updated accordingly.
223 Bug fix: Zebrasrv didn't search correctly when queries contained masking
224 characters. This bug was introduced in 1.0a8.
226 Zebrasrv now tag records with the proper database name.
228 New settings, memMax and keyTmpDir.
230 Changed name of setting lockDir (previously called lockPath) and
231 setTmpDir (previously called tempSetPath).
233 Generalized and changed record type specifications. In short, there are:
235 grs.sgml structured, "SGML-like" syntax
236 grs.regx.<filter> structured, Regular expression filter
237 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
238 is the name of an abstract syntax file.
239 Bug fix: Result sets weren't sorted in operations involving boolean
240 operations with "ranked" operands.
244 Added national character-handling subsystem.
248 Small modifications to input filters and profiles.
250 Added support for SOIF syntax (with private OID).
254 Fixed buffer-size problem in indexing.
256 Added compression to temporary files for updating.
258 Added phrase registers.
260 Added dynamic mapping of search attribute to multiple termlists (ANY).
262 Scan support in multiple databases/registers.
264 Configuration settings are case-insensitive and single dash (-)
265 characters are ignored in comparisons.
267 The index processing ignores empty files - warning given.
269 New option to zebraidx (-V) displays version information.
273 Fixed problem in file-update system.
275 Fixed problem in shadow system; register was sometimes corrupted after
280 Fixed problems in the ISAM subsystem. Caused difficulties when updating
283 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
284 the rank and record number.
286 Fixed bug in the isam subsystem - caused a malfunction when accessing
287 words which occurred more than 10000 times.
289 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
292 Server can now run under inetd. Use option -i, and -w <directory> to
293 set working directory to desired location.
295 New zebraidx command: clean - removes temporary shadow files.
297 Fixed bug in ISAM system. Occurred rarely during register updates.
299 Logging during index merge phase is improved. The remaining running
302 Temporary files generated by zebraidx are removed after each run.
304 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
305 when doing scan operations in dictionaries with European characters.
309 A whole slew of updates, to make the first publicized release. Get the doc
314 Memory-problems in ISAM fixed. More blocktypes added to the default setup
315 to increase performance on larger databases.
317 Various minor changes in data management system.
321 A couple of portability-problems resolved.
323 Changed some malloc() to xmalloc().