2 Perl Filter and Perl API. By Peter Popovics.
4 For zebra.cfg, if no profilePath is specified, directory
5 (prefix)/share/idzebra/tab
8 Zebra Examples in examples . Zebra tests in test.
10 Bug fix: sort index was not properly modified on
11 record updates/deletes.
13 Move data1 to Zebra (used to be part of YAZ).
17 Fix character encoding of scan response terms.
19 Fix character decoding of scan request terms.
21 Fix ESpec handling (requires YAZ 1.9.1)
23 Fix searches for complete fields.
27 When name zebra is used in a filename or directory 'idzebra' is used
28 instead to avoid confusion with GNU zebra (routing software).
30 Zebra server stops with a fatal error if config file cannot be read.
32 New config setting, followLinks, that controls whether update of files
33 should follow symbolic. Set it to 1 (for enable) or 0 (to disable).
34 By default symbolic links are followed.
36 Fix MARC transfer . MARC fields had wrong data for multiple fields.
38 XML record reader moved from YAZ to Zebra, to make YAZ less
39 dependant on external libraries.
41 Zebra uses yaz_iconv which is mini iconv library supporting UTF-8,
42 UCS4, ISO-8859-1. This means that Zebra does UNICODE even
43 on systems that doesn't offer iconv.
45 XML record reader supports external system entities.
49 New .abs-directive "xpath" that takes one argument: "enable"
50 or "disable" to enable and disable XPath -indexing. If no "xpath"
51 direcive is found in .abs-file , XPath-indexing is disabled to ensure
52 backwards compatibility. For missing .abs-files XPath-indexing is
53 enabled so that such records are searchable.
55 Zebra warns about missing .abs-file only once (for each type).
57 Fixed a bug in file update where already-inserted files could
62 Zebra license changed to GNU GPL.
64 XPath-like queries used when RPN string attributes are used, eg.
65 @attr 1=/portal/title sometitle
66 @attr 1=/portal/title[@xml:lang=da] danishtitle
67 @attr 1=/portal/title/@xml:lang da
68 @attr 1=//title sometitle
70 Zebra uses UTF-8 internally:
71 1) New setting "encoding" for zebra.cfg that specifies encoding for
72 OCTET terms in queries and record encoding for most transfer syntaxes
73 (except those that use International Strings, such as GRS-1).
74 2) The encoding of International strings is UTF-8 by default. It
75 may be changed by character set negotiation. If character set
76 negotiation is in effect and if records are selected for conversion
77 these'll be converted to the selected character set - thus overriding
78 the encoding setting in zebra.cfg.
79 3) New directive "encoding" in .abs-files. This specifies the external
80 character encoding for files indexed by zebra. However, if records
81 themselves have an XML header that specifies and encoding that'll be used
84 XML filter (-t grs.xml).
86 Multiple registers. New setting in resource 'root' that holds base
87 directory for register(s). A group a databases may be put in separate
88 register in directory root/reg by using db name 'reg/db1' ... 'reg/dbN'.
92 Fixes for Digital Unix
94 Implemented hits per term using USR:SearchResult-1.
96 New Zebra API. Locking system re-implemented.
98 --- 1.1.stable 2002/02/20
100 Rank weight can be controlled with attribute type 9. Default
101 value is 34. Recommended values between 1-36.
105 Updated for YAZ version 1.8.
107 Added support for termsets - a result set of terms matching
108 a given query. For @attr 8=<set> creates termset named <set>.
110 Added support for raw retrieval. Element Set Name R forces the
111 text filter which returns the record in its original form.
113 Added numerical sort - triggered by structure=numeric (4=109).
115 Remote record import using Z39.50 Extended Services and Segments.
117 Fixed bug where updating a database with user-defined attributes
118 could corrupt the register (bad storeKeys).
120 Multi-threaded version.
122 Fixed bug regarding proximity.
124 Documentation updates.
126 Fixed bug in record retrieval module that occured on 64-bit OSF
131 Fixed bug in makefile for WIN32.
133 Fixed bug in configure script - used bash-specific features.
137 Added support for multiple records in one file for filter grs.sgml.
139 Changed record index structure. New layout is incompatible with
140 previous releases. Added setting "recordcompression" to control
141 compression of records. Possible values are "none" (no
142 compression) and bzip2 (compression using libbz2).
144 Added XML transfer syntax support for retrieval of structured records.
145 Schema in CompSpec is recognised in retrieval of structured records.
147 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
148 that fails, the filter reads the file <filt>.flt (regx style filter).
150 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
151 Zebra's configure script automatically attempts to locate Tcl. For
152 manual Tcl configuration use option --with-tclconfig=<path> to specify
153 where Tcl's library files are located.
155 Implemented "compression" of Dictionary and ISAM system. Dictionary
158 Added "tagsysno" directive to zebra.cfg to control under which tag the
159 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
162 Added "tagrank" as above.
164 Changed file naming scheme for register files from <name>.mf.<no> to
167 Implemented "position"-flag for register type (as defined in
168 default.idx). When set to zero no position (or seqence number) is
169 saved in register for each word occurrence, thus saving some register
172 Implemented database mapping. Using mapdb one can specify a database
173 to be mapped to one or more physical databases. Usage:
174 mapdb <fromdb> <todb> ..
176 Added SOIF-filter. Thanks to Peter Valkenburg.
178 For the regx-filter "end element -record" may trigger a mark-of-record
179 if outer level is reached.
181 Tag sets may be typed in the reference to it. From the .abs-file the
182 "tagset" directive takes a third optional integer type for the tag set
183 referenced. From a .tag-file the "include" directive takes a third
184 optional type as well. The old "type" directive in the tag set itself
185 is still recognized but acts as the default type for the tag set.
187 Zebra supports the specification of arbitrary attributes sets, schemas
188 and tag sets, because of the change in YAZ' OID management system.
190 Fixed bug in Sort that caused it NOT to use character mapping as it
193 Zebra now uses GNU configure to generate Makefile(s).
195 Added un-optimised support for left and left/right truncation attributes.
197 Added support for relational operators on text when using RPN queries.
199 Added support for sort specifications in RPN queries. Type 7 specifies
200 'sort' where value 1=ascending, value 2=descending. The use attribute
201 specifies the field criteria as usual. The term specifies priority
202 where 0=first, 1=second, ...
204 Changed the way use attributes are specified in the recordId
207 Maximum number of databases in one Zebra register increased.
209 New setting, databasePath, which specifies that first directory during
210 update traversal is the database name (instead of a fixed one).
212 New setting, explainDatabase, which specifies that databases are
215 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
217 Implemented EXPLAIN database maintenance. Zebra automatically
218 generate - and update CategoryList, TargetInfo, DatabaseInfo,
219 AttributeSetInfo and AttributeDetails records at this stage. The
220 records may be transferred as GRS-1, SUTRS or Explain.
222 Fixed register spec so that colon isn't treated as size separator
223 unless followed by [0-9+-] in order to allow DOS drive specifications.
225 Fixed two bugs in ISAMC system.
227 Changed the way Zebra keeps its maintenance information about attribute
228 sets, available attributes, etc.. Records in "SGML" notation using an
229 EXPLAIN schema is now used when appropriate.
231 Bug fix: Index didn't handle update/insert/delete of the same record
232 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
233 first occurence of a record is considered.
235 Most searches now return correct number of hits.
237 New modular ranking system. Interested programmers are encouraged to
238 inspect rank1.c and improve the algorithm.
240 Bug fix: Lock files weren't removed as they should on NT.
242 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
243 specify a "sort register". Refer to the gils sample records which refer
244 to index type "s" which is specified as "sort" in the default.idx file.
245 Each sort criteria can either be Ascending or Descending and at most
246 three sort elements can be specified.
248 Bug fix: Character mapping didn't work for text files.
252 Simple ranked searches now return correct number of hits.
254 The test option (-s) only makes a read-lock on the index as well
255 as using read-only operations anywhere.
257 Moved towards generic character mapping. Configuration file default.idx
258 specifies character map files for register types w, p, u, etc.
260 Implemented "begin variant" for the sgml.regx - filter.
262 Fixed a few memory leaks.
264 Added support for C++, headers uses extern "C" for public definitions.
266 Bug fix: The show records facility (-s) only displayed information for
267 the first record in a file (and not for every record in the file).
269 Added option "-f <n>" to limit the logging of record operations. After
270 <n> records has been processed no logging is performed (unless errors
273 Bug fix: the compressed ISAM system didn't handle update operations
276 Added setting, "maxResultSetSize", to hold the number of records to
277 save in a result set.
279 Bug fix: Complete phrase did't work for search operations.
281 Bug fix: temporary result sets weren't deleted.
283 Reduced disk space for saved keys (storeKeys = 1).
285 Added optional, physical ANY (key replication)
287 Implemented proximity operator in search.
289 Bug fix: the path name buffers used by file match traversal routines
290 have been extended to support long file names.
292 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
293 configuration file. The resulting register without "storeKeys" is about
294 half the size, and the memory used by zebraidx during phase 2 (merge) is
295 reduced to a minimum.
297 Reworked the way Regexp-2 queries with error tolerance are handled and
298 specified. The documentation has been updated accordingly.
300 Bug fix: Zebrasrv didn't search correctly when queries contained masking
301 characters. This bug was introduced in 1.0a8.
303 Zebrasrv now tag records with the proper database name.
305 New settings, memMax and keyTmpDir.
307 Changed name of setting lockDir (previously called lockPath) and
308 setTmpDir (previously called tempSetPath).
310 Generalized and changed record type specifications. In short, there are:
312 grs.sgml structured, "SGML-like" syntax
313 grs.regx.<filter> structured, Regular expression filter
314 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
315 is the name of an abstract syntax file.
316 Bug fix: Result sets weren't sorted in operations involving boolean
317 operations with "ranked" operands.
321 Added national character-handling subsystem.
325 Small modifications to input filters and profiles.
327 Added support for SOIF syntax (with private OID).
331 Fixed buffer-size problem in indexing.
333 Added compression to temporary files for updating.
335 Added phrase registers.
337 Added dynamic mapping of search attribute to multiple termlists (ANY).
339 Scan support in multiple databases/registers.
341 Configuration settings are case-insensitive and single dash (-)
342 characters are ignored in comparisons.
344 The index processing ignores empty files - warning given.
346 New option to zebraidx (-V) displays version information.
350 Fixed problem in file-update system.
352 Fixed problem in shadow system; register was sometimes corrupted after
357 Fixed problems in the ISAM subsystem. Caused difficulties when updating
360 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
361 the rank and record number.
363 Fixed bug in the isam subsystem - caused a malfunction when accessing
364 words which occurred more than 10000 times.
366 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
369 Server can now run under inetd. Use option -i, and -w <directory> to
370 set working directory to desired location.
372 New zebraidx command: clean - removes temporary shadow files.
374 Fixed bug in ISAM system. Occurred rarely during register updates.
376 Logging during index merge phase is improved. The remaining running
379 Temporary files generated by zebraidx are removed after each run.
381 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
382 when doing scan operations in dictionaries with European characters.
386 A whole slew of updates, to make the first publicized release. Get the doc
391 Memory-problems in ISAM fixed. More blocktypes added to the default setup
392 to increase performance on larger databases.
394 Various minor changes in data management system.
398 A couple of portability-problems resolved.
400 Changed some malloc() to xmalloc().