4 Zebra license changed to GNU GPL.
6 XPATH-like queries used when RPN string attributes are used, eg.
7 @attr 1=/portal/title sometitle
8 @attr 1=/portal/title[@xml:lang=da] danishtitle
9 @attr 1=/portal/title/@xml:lang da
10 @attr 1=//title sometitle
12 Zebra uses UTF-8 internally:
13 1) New setting "encoding" for zebra.cfg that specifies encoding for
14 OCTET terms in queries and record encoding for most transfer syntaxes
15 (except those that use International Strings, such as GRS-1).
16 2) The encoding of International strings is UTF-8 by default. It
17 may be changed by character set negotiation. If character set
18 negotiation is in effect and if records are selected for conversion
19 these'll be converted to the selected character set - thus overriding
20 the encoding setting in zebra.cfg.
22 3) New directive "encoding" in .abs-files. This specifies the
23 external for files indexed by zebra. However, if records themselves
24 have an XML header that specifies and encoding that'll be used
27 XML filter (-t grs.xml).
29 Multiple registers. New setting in resource 'root' that holds base
30 directory for register(s). A group a databases may be put in separate
31 register in directory root/reg by using db name 'reg/db1' ... 'reg/dbN'.
35 Fixes for Digital Unix
37 Implemented hits per term using USR:SearchResult-1.
39 New Zebra API. Locking system re-implemented.
41 --- 1.1.stable 2002/02/20
43 Rank weight can be controlled with attribute type 9. Default
44 value is 34. Recommended values between 1-36.
48 Updated for YAZ version 1.8.
50 Added support for termsets - a result set of terms matching
51 a given query. For @attr 8=<set> creates termset named <set>.
53 Added support for raw retrieval. Element Set Name R forces the
54 text filter which returns the record in its original form.
56 Added numerical sort - triggered by structure=numeric (4=109).
58 Remote record import using Z39.50 Extended Services and Segments.
60 Fixed bug where updating a database with user-defined attributes
61 could corrupt the register (bad storeKeys).
63 Multi-threaded version.
65 Fixed bug regarding proximity.
67 Documentation updates.
69 Fixed bug in record retrieval module that occured on 64-bit OSF
74 Fixed bug in makefile for WIN32.
76 Fixed bug in configure script - used bash-specific features.
80 Added support for multiple records in one file for filter grs.sgml.
82 Changed record index structure. New layout is incompatible with
83 previous releases. Added setting "recordcompression" to control
84 compression of records. Possible values are "none" (no
85 compression) and bzip2 (compression using libbz2).
87 Added XML transfer syntax support for retrieval of structured records.
88 Schema in CompSpec is recognised in retrieval of structured records.
90 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
91 that fails, the filter reads the file <filt>.flt (regx style filter).
93 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
94 Zebra's configure script automatically attempts to locate Tcl. For
95 manual Tcl configuration use option --with-tclconfig=<path> to specify
96 where Tcl's library files are located.
98 Implemented "compression" of Dictionary and ISAM system. Dictionary
101 Added "tagsysno" directive to zebra.cfg to control under which tag the
102 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
105 Added "tagrank" as above.
107 Changed file naming scheme for register files from <name>.mf.<no> to
110 Implemented "position"-flag for register type (as defined in
111 default.idx). When set to zero no position (or seqence number) is
112 saved in register for each word occurrence, thus saving some register
115 Implemented database mapping. Using mapdb one can specify a database
116 to be mapped to one or more physical databases. Usage:
117 mapdb <fromdb> <todb> ..
119 Added SOIF-filter. Thanks to Peter Valkenburg.
121 For the regx-filter "end element -record" may trigger a mark-of-record
122 if outer level is reached.
124 Tag sets may be typed in the reference to it. From the .abs-file the
125 "tagset" directive takes a third optional integer type for the tag set
126 referenced. From a .tag-file the "include" directive takes a third
127 optional type as well. The old "type" directive in the tag set itself
128 is still recognized but acts as the default type for the tag set.
130 Zebra supports the specification of arbitrary attributes sets, schemas
131 and tag sets, because of the change in YAZ' OID management system.
133 Fixed bug in Sort that caused it NOT to use character mapping as it
136 Zebra now uses GNU configure to generate Makefile(s).
138 Added un-optimised support for left and left/right truncation attributes.
140 Added support for relational operators on text when using RPN queries.
142 Added support for sort specifications in RPN queries. Type 7 specifies
143 'sort' where value 1=ascending, value 2=descending. The use attribute
144 specifies the field criteria as usual. The term specifies priority
145 where 0=first, 1=second, ...
147 Changed the way use attributes are specified in the recordId
150 Maximum number of databases in one Zebra register increased.
152 New setting, databasePath, which specifies that first directory during
153 update traversal is the database name (instead of a fixed one).
155 New setting, explainDatabase, which specifies that databases are
158 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
160 Implemented EXPLAIN database maintenance. Zebra automatically
161 generate - and update CategoryList, TargetInfo, DatabaseInfo,
162 AttributeSetInfo and AttributeDetails records at this stage. The
163 records may be transferred as GRS-1, SUTRS or Explain.
165 Fixed register spec so that colon isn't treated as size separator
166 unless followed by [0-9+-] in order to allow DOS drive specifications.
168 Fixed two bugs in ISAMC system.
170 Changed the way Zebra keeps its maintenance information about attribute
171 sets, available attributes, etc.. Records in "SGML" notation using an
172 EXPLAIN schema is now used when appropriate.
174 Bug fix: Index didn't handle update/insert/delete of the same record
175 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
176 first occurence of a record is considered.
178 Most searches now return correct number of hits.
180 New modular ranking system. Interested programmers are encouraged to
181 inspect rank1.c and improve the algorithm.
183 Bug fix: Lock files weren't removed as they should on NT.
185 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
186 specify a "sort register". Refer to the gils sample records which refer
187 to index type "s" which is specified as "sort" in the default.idx file.
188 Each sort criteria can either be Ascending or Descending and at most
189 three sort elements can be specified.
191 Bug fix: Character mapping didn't work for text files.
195 Simple ranked searches now return correct number of hits.
197 The test option (-s) only makes a read-lock on the index as well
198 as using read-only operations anywhere.
200 Moved towards generic character mapping. Configuration file default.idx
201 specifies character map files for register types w, p, u, etc.
203 Implemented "begin variant" for the sgml.regx - filter.
205 Fixed a few memory leaks.
207 Added support for C++, headers uses extern "C" for public definitions.
209 Bug fix: The show records facility (-s) only displayed information for
210 the first record in a file (and not for every record in the file).
212 Added option "-f <n>" to limit the logging of record operations. After
213 <n> records has been processed no logging is performed (unless errors
216 Bug fix: the compressed ISAM system didn't handle update operations
219 Added setting, "maxResultSetSize", to hold the number of records to
220 save in a result set.
222 Bug fix: Complete phrase did't work for search operations.
224 Bug fix: temporary result sets weren't deleted.
226 Reduced disk space for saved keys (storeKeys = 1).
228 Added optional, physical ANY (key replication)
230 Implemented proximity operator in search.
232 Bug fix: the path name buffers used by file match traversal routines
233 have been extended to support long file names.
235 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
236 configuration file. The resulting register without "storeKeys" is about
237 half the size, and the memory used by zebraidx during phase 2 (merge) is
238 reduced to a minimum.
240 Reworked the way Regexp-2 queries with error tolerance are handled and
241 specified. The documentation has been updated accordingly.
243 Bug fix: Zebrasrv didn't search correctly when queries contained masking
244 characters. This bug was introduced in 1.0a8.
246 Zebrasrv now tag records with the proper database name.
248 New settings, memMax and keyTmpDir.
250 Changed name of setting lockDir (previously called lockPath) and
251 setTmpDir (previously called tempSetPath).
253 Generalized and changed record type specifications. In short, there are:
255 grs.sgml structured, "SGML-like" syntax
256 grs.regx.<filter> structured, Regular expression filter
257 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
258 is the name of an abstract syntax file.
259 Bug fix: Result sets weren't sorted in operations involving boolean
260 operations with "ranked" operands.
264 Added national character-handling subsystem.
268 Small modifications to input filters and profiles.
270 Added support for SOIF syntax (with private OID).
274 Fixed buffer-size problem in indexing.
276 Added compression to temporary files for updating.
278 Added phrase registers.
280 Added dynamic mapping of search attribute to multiple termlists (ANY).
282 Scan support in multiple databases/registers.
284 Configuration settings are case-insensitive and single dash (-)
285 characters are ignored in comparisons.
287 The index processing ignores empty files - warning given.
289 New option to zebraidx (-V) displays version information.
293 Fixed problem in file-update system.
295 Fixed problem in shadow system; register was sometimes corrupted after
300 Fixed problems in the ISAM subsystem. Caused difficulties when updating
303 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
304 the rank and record number.
306 Fixed bug in the isam subsystem - caused a malfunction when accessing
307 words which occurred more than 10000 times.
309 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
312 Server can now run under inetd. Use option -i, and -w <directory> to
313 set working directory to desired location.
315 New zebraidx command: clean - removes temporary shadow files.
317 Fixed bug in ISAM system. Occurred rarely during register updates.
319 Logging during index merge phase is improved. The remaining running
322 Temporary files generated by zebraidx are removed after each run.
324 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
325 when doing scan operations in dictionaries with European characters.
329 A whole slew of updates, to make the first publicized release. Get the doc
334 Memory-problems in ISAM fixed. More blocktypes added to the default setup
335 to increase performance on larger databases.
337 Various minor changes in data management system.
341 A couple of portability-problems resolved.
343 Changed some malloc() to xmalloc().