1 Zebra uses string attributes for indexing internally. Using set+numeric
2 use attribute can still be used. But that is a search-only conversion which
3 inspects .att-set files as indicated using attset-directives in zebra.cfg.
4 attset references are no longer required, but when used they deserve
5 as "check" for that the index names used are also present in .att.
7 Implemented bug #588: allrecords search. Using @attr 1=allrecords ""
8 matches all records in a database.
10 Zebra reads (non-standard) attribute 10 for RPN queries. The value, when
11 specified, is returned as subqueryId in SearchResult-1. It un-specified
12 no subqueryId is part of SearchResult-1.
14 Added 'dbperms' setting to zebra.cfg. Names file with lines of
15 format username: db1+...dbn, listing databases that user has access to.
16 Database-specific access control only happens for searching, at present.
18 Added zebra_set_approx_limit for a ZebraHandle (session). Results
19 will be approximate if hit count is greater than the limit specified.
21 Added support for term hit counts. This was not in place for earlier
22 1.4 versions, but is present in the 1.3 series. Bug #124.
24 Implemented the 'equivalent' directive for .chr-files.
26 Added zebra_get_bfs to get BFile handle for session.
28 Added 'melm' directive to absyn format to simplify config files
29 for MARC-style databases. See tab/marc21.abs for an example.
31 Added bath-compliant definition file marc21.abs for use with MARC databases.
33 Added autoconf utility idzebra.m4 which defines --with-idzebra .
35 Added mechanism to ignore leading articles when doing full-field indexing,
36 based on the character map files. See the manual for further discussion.
38 Fixed bug in record management. Releasing blocks could result in
41 Fixed bug in isam:b. A tree split could result in a lost item.
43 Remove isamd. It's not been in use for a long time and isamb is better
46 Change SYSNO to be zint. Change pointers in isamc and isamb to zint.
47 Change block number in bfile/cfile to zint. zint is a long integer
48 (64-bit). This change practially removes register limits for Zebra.
50 Implement int-list encoding for ISAMs.
52 Added facility to make attibutes in grs.regx and grs.tcl filter using the
53 data command with argument -attribute <name> . The content of data is
54 the value of the attribute. This command should be used inside a
55 begin element , end element section.
57 Update zebra.nsi to NSIS 2.
59 Added a new 'cut' directive to charmaps (.chr files) which specifies that
60 only characters after the cutting char should be indexed.
62 Update Perl internals so that it matches the current Zebra API.
63 The recordGroup structure is no longer available. A group of resources
64 can still be referenced by setting groupName=>.. in various methods.
66 Maximum number of records to be sorted in a result set can be
67 specified by setting "sortmax". Default is 1000.
69 Allow use of string use attributes for regular attribute sets. The
70 name matches the name given in the attribute set file. All strings
71 starting with / are considered X-Path as usual.
73 Fixed bug in grs.regx. filter . 'end element' could pop off top tag
74 element for XML tree. It may only pop off if -record is given.
76 Added grs.danbib filter - for Danish Bibliographic Centre.
78 Rename CHANGELOG to NEWS.
80 For text filter, return only header if elementSetName=H . elementSetName=R
81 returns contents only. Other elementSetName returns both header+content.
83 Added test for charmap and rusmarc.
85 Added feature charmaps (.chr) so that characters may be specified in
88 Fixed problem with encoding directive for charmap(.chr) files.
90 Allow Remote insert/delete/replace/update with record, recordIdNumber
91 (sysno) and/or recordIdOpaque(user supplied record Id). If both
92 IDs are omitted internal record ID match is assumed (recordId: - in
97 Fix bug. X-Path attribute expressions with spaces in them now works.
99 Fix base address for MARC output.
101 --- 1.3.14 2003/11/29
103 Fix bug with shadow and result set handling.
105 Implement MARCXML to ISO2709 conversion.
107 --- 1.3.13 2003/09/26
109 Add missing examples for Windows install.
111 Fix bug in regx filter to make it "greedy" again. This bug appeared
116 --- 1.3.12 2003/09/08
118 Fix XML error handling. Stop XML parse immediately if XML parse error
119 occur (i.e. produce one error only).
121 Zebra ignores "unsupported use attribute" for individual databases
122 when search multiple databases (unless all databases fail).
124 New filter grs.marcxml which works like grs.marc but produces MARCXML.
126 Added support for database deletion. It is possible to create/drop
127 a database from zebraidx utility. Note: only for isam:b.
129 Write zebrasrv.pid to lockdir.
131 Bug fix: result sets were not recovered correctly. Had to
132 add ODR handle for zebra_search_RPN in order to make it work.
134 Fixed a bug in regx filters that didn't do anchors (^) correctly.
136 Fixed a bug in searches with X-Path searches sometimes giving "extra"
139 Zebra server checks for zebrasrv.pid and refuses to start if it is already
140 locked by another (running) zebrasrv.
142 Fixed a bug with text being chunked in pieces for the grs.xml filter.
144 --- 1.3.11 2003/04/25
146 xelm code updates. xelm works regardless state of 'xpath enable/disable'
147 Avoid -L/usr/lib since that is already default library path.
149 Allow multiple updates within one transaction.
151 Fixed a bug with >2GB files (overflow in integer expression).
153 --- 1.3.10 2003/04/01
155 Fix linker error for Perl module.
157 Fix bug in and operation which in some cases could result in "extra"
158 hits. Bug was introduced in 1.3.5.
160 Fix bug in handling of schema conversion when producing numeric tags.
166 Add missing files doc/zvrank.txt and doc/marc_indexing.xml.
170 Zvrank: an experimental ranking algorithm. See doc/zvrank.txt and
171 source in index/zvrank.c. Enable this by using rank: zvrank in zebra.cfg.
172 Contributed by Johannes Leveling <Johannes.Leveling at fernuni-hagen.de>
174 livrank: another experimental ranking algorithm. Source in livcode.c.
175 Enable this by using rank: livrank in zebra.cfg and use -DLIV_CODE=1
177 Contributed by Pete Mallinson, University of Liverpool.
179 Advanced MARC indexing. See doc/marc_indexing.xml
180 Oleg Kolobov <oleg at lib.tpu.ru>
182 Perl API updates and fixes.
183 Peter Popovics <pop at technomat.hu>
185 Fixed 'zebraidx delete'.
187 Implemented 'zebraidx clean'.
189 64-bit offsets for register files on WIN32 (no 2 GB limit).
191 Fixed a few memory leaks WRT sorting.
195 Fixed error handling : error code was not properly returned.
197 Support Truncation 104 (CCL).
201 Added missing source files for perl extension.
205 Implemented xelm directive.
207 Updated for newer version of YAZ (introduction of string schema).
209 Directory examples/zthes now part of distribution (was missing
210 in previous release).
212 New .abs directive, systag, that control where to put retrieval
213 information. The directive takes two arguments: system tag, element name.
214 System tag is one of : rank, sysno, size.
218 Perl Filter and Perl API. By Peter Popovics.
220 For zebra.cfg, if no profilePath is specified, directory
221 (prefix)/share/idzebra/tab
224 Zebra Examples in examples . Zebra tests in test.
226 Bug fix: sort index was not properly modified on
227 record updates/deletes.
229 Fix handling of character entities for sgml filter.
231 Move data1 to Zebra (used to be part of YAZ).
235 Fix character encoding of scan response terms.
237 Fix character decoding of scan request terms.
239 Fix ESpec handling (requires YAZ 1.9.1)
241 Fix searches for complete fields.
245 When name zebra is used in a filename or directory 'idzebra' is used
246 instead to avoid confusion with GNU zebra (routing software).
248 Zebra server stops with a fatal error if config file cannot be read.
250 New config setting, followLinks, that controls whether update of files
251 should follow symbolic. Set it to 1 (for enable) or 0 (to disable).
252 By default symbolic links are followed.
254 Fix MARC transfer . MARC fields had wrong data for multiple fields.
256 XML record reader moved from YAZ to Zebra, to make YAZ less
257 dependant on external libraries.
259 Zebra uses yaz_iconv which is mini iconv library supporting UTF-8,
260 UCS4, ISO-8859-1. This means that Zebra does UNICODE even
261 on systems that doesn't offer iconv.
263 XML record reader supports external system entities.
267 New .abs-directive "xpath" that takes one argument: "enable"
268 or "disable" to enable and disable XPath -indexing. If no "xpath"
269 direcive is found in .abs-file , XPath-indexing is disabled to ensure
270 backwards compatibility. For missing .abs-files XPath-indexing is
271 enabled so that such records are searchable.
273 Zebra warns about missing .abs-file only once (for each type).
275 Fixed a bug in file update where already-inserted files could
280 Zebra license changed to GNU GPL.
282 XPath-like queries used when RPN string attributes are used, eg.
283 @attr 1=/portal/title sometitle
284 @attr 1=/portal/title[@xml:lang=da] danishtitle
285 @attr 1=/portal/title/@xml:lang da
286 @attr 1=//title sometitle
288 Zebra uses UTF-8 internally:
289 1) New setting "encoding" for zebra.cfg that specifies encoding for
290 OCTET terms in queries and record encoding for most transfer syntaxes
291 (except those that use International Strings, such as GRS-1).
292 2) The encoding of International strings is UTF-8 by default. It
293 may be changed by character set negotiation. If character set
294 negotiation is in effect and if records are selected for conversion
295 these'll be converted to the selected character set - thus overriding
296 the encoding setting in zebra.cfg.
297 3) New directive "encoding" in .abs-files. This specifies the external
298 character encoding for files indexed by zebra. However, if records
299 themselves have an XML header that specifies and encoding that'll be used
302 XML filter (-t grs.xml).
304 Multiple registers. New setting in resource 'root' that holds base
305 directory for register(s). A group a databases may be put in separate
306 register in directory root/reg by using db name 'reg/db1' ... 'reg/dbN'.
310 Fixes for Digital Unix
312 Implemented hits per term using USR:SearchResult-1.
314 New Zebra API. Locking system re-implemented.
316 --- 1.1.stable 2002/02/20
318 Rank weight can be controlled with attribute type 9. Default
319 value is 34. Recommended values between 1-36.
323 Updated for YAZ version 1.8.
325 Added support for termsets - a result set of terms matching
326 a given query. For @attr 8=<set> creates termset named <set>.
328 Added support for raw retrieval. Element Set Name R forces the
329 text filter which returns the record in its original form.
331 Added numerical sort - triggered by structure=numeric (4=109).
333 Remote record import using Z39.50 Extended Services and Segments.
335 Fixed bug where updating a database with user-defined attributes
336 could corrupt the register (bad storeKeys).
338 Multi-threaded version.
340 Fixed bug regarding proximity.
342 Documentation updates.
344 Fixed bug in record retrieval module that occured on 64-bit OSF
349 Fixed bug in makefile for WIN32.
351 Fixed bug in configure script - used bash-specific features.
355 Added support for multiple records in one file for filter grs.sgml.
357 Changed record index structure. New layout is incompatible with
358 previous releases. Added setting "recordcompression" to control
359 compression of records. Possible values are "none" (no
360 compression) and bzip2 (compression using libbz2).
362 Added XML transfer syntax support for retrieval of structured records.
363 Schema in CompSpec is recognised in retrieval of structured records.
365 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
366 that fails, the filter reads the file <filt>.flt (regx style filter).
368 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
369 Zebra's configure script automatically attempts to locate Tcl. For
370 manual Tcl configuration use option --with-tclconfig=<path> to specify
371 where Tcl's library files are located.
373 Implemented "compression" of Dictionary and ISAM system. Dictionary
376 Added "tagsysno" directive to zebra.cfg to control under which tag the
377 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
380 Added "tagrank" as above.
382 Changed file naming scheme for register files from <name>.mf.<no> to
385 Implemented "position"-flag for register type (as defined in
386 default.idx). When set to zero no position (or seqence number) is
387 saved in register for each word occurrence, thus saving some register
390 Implemented database mapping. Using mapdb one can specify a database
391 to be mapped to one or more physical databases. Usage:
392 mapdb <fromdb> <todb> ..
394 Added SOIF-filter. Thanks to Peter Valkenburg.
396 For the regx-filter "end element -record" may trigger a mark-of-record
397 if outer level is reached.
399 Tag sets may be typed in the reference to it. From the .abs-file the
400 "tagset" directive takes a third optional integer type for the tag set
401 referenced. From a .tag-file the "include" directive takes a third
402 optional type as well. The old "type" directive in the tag set itself
403 is still recognized but acts as the default type for the tag set.
405 Zebra supports the specification of arbitrary attributes sets, schemas
406 and tag sets, because of the change in YAZ' OID management system.
408 Fixed bug in Sort that caused it NOT to use character mapping as it
411 Zebra now uses GNU configure to generate Makefile(s).
413 Added un-optimised support for left and left/right truncation attributes.
415 Added support for relational operators on text when using RPN queries.
417 Added support for sort specifications in RPN queries. Type 7 specifies
418 'sort' where value 1=ascending, value 2=descending. The use attribute
419 specifies the field criteria as usual. The term specifies priority
420 where 0=first, 1=second, ...
422 Changed the way use attributes are specified in the recordId
425 Maximum number of databases in one Zebra register increased.
427 New setting, databasePath, which specifies that first directory during
428 update traversal is the database name (instead of a fixed one).
430 New setting, explainDatabase, which specifies that databases are
433 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
435 Implemented EXPLAIN database maintenance. Zebra automatically
436 generate - and update CategoryList, TargetInfo, DatabaseInfo,
437 AttributeSetInfo and AttributeDetails records at this stage. The
438 records may be transferred as GRS-1, SUTRS or Explain.
440 Fixed register spec so that colon isn't treated as size separator
441 unless followed by [0-9+-] in order to allow DOS drive specifications.
443 Fixed two bugs in ISAMC system.
445 Changed the way Zebra keeps its maintenance information about attribute
446 sets, available attributes, etc.. Records in "SGML" notation using an
447 EXPLAIN schema is now used when appropriate.
449 Bug fix: Index didn't handle update/insert/delete of the same record
450 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
451 first occurence of a record is considered.
453 Most searches now return correct number of hits.
455 New modular ranking system. Interested programmers are encouraged to
456 inspect rank1.c and improve the algorithm.
458 Bug fix: Lock files weren't removed as they should on NT.
460 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
461 specify a "sort register". Refer to the gils sample records which refer
462 to index type "s" which is specified as "sort" in the default.idx file.
463 Each sort criteria can either be Ascending or Descending and at most
464 three sort elements can be specified.
466 Bug fix: Character mapping didn't work for text files.
470 Simple ranked searches now return correct number of hits.
472 The test option (-s) only makes a read-lock on the index as well
473 as using read-only operations anywhere.
475 Moved towards generic character mapping. Configuration file default.idx
476 specifies character map files for register types w, p, u, etc.
478 Implemented "begin variant" for the sgml.regx - filter.
480 Fixed a few memory leaks.
482 Added support for C++, headers uses extern "C" for public definitions.
484 Bug fix: The show records facility (-s) only displayed information for
485 the first record in a file (and not for every record in the file).
487 Added option "-f <n>" to limit the logging of record operations. After
488 <n> records has been processed no logging is performed (unless errors
491 Bug fix: the compressed ISAM system didn't handle update operations
494 Added setting, "maxResultSetSize", to hold the number of records to
495 save in a result set.
497 Bug fix: Complete phrase did't work for search operations.
499 Bug fix: temporary result sets weren't deleted.
501 Reduced disk space for saved keys (storeKeys = 1).
503 Added optional, physical ANY (key replication)
505 Implemented proximity operator in search.
507 Bug fix: the path name buffers used by file match traversal routines
508 have been extended to support long file names.
510 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
511 configuration file. The resulting register without "storeKeys" is about
512 half the size, and the memory used by zebraidx during phase 2 (merge) is
513 reduced to a minimum.
515 Reworked the way Regexp-2 queries with error tolerance are handled and
516 specified. The documentation has been updated accordingly.
518 Bug fix: Zebrasrv didn't search correctly when queries contained masking
519 characters. This bug was introduced in 1.0a8.
521 Zebrasrv now tag records with the proper database name.
523 New settings, memMax and keyTmpDir.
525 Changed name of setting lockDir (previously called lockPath) and
526 setTmpDir (previously called tempSetPath).
528 Generalized and changed record type specifications. In short, there are:
530 grs.sgml structured, "SGML-like" syntax
531 grs.regx.<filter> structured, Regular expression filter
532 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
533 is the name of an abstract syntax file.
534 Bug fix: Result sets weren't sorted in operations involving boolean
535 operations with "ranked" operands.
539 Added national character-handling subsystem.
543 Small modifications to input filters and profiles.
545 Added support for SOIF syntax (with private OID).
549 Fixed buffer-size problem in indexing.
551 Added compression to temporary files for updating.
553 Added phrase registers.
555 Added dynamic mapping of search attribute to multiple termlists (ANY).
557 Scan support in multiple databases/registers.
559 Configuration settings are case-insensitive and single dash (-)
560 characters are ignored in comparisons.
562 The index processing ignores empty files - warning given.
564 New option to zebraidx (-V) displays version information.
568 Fixed problem in file-update system.
570 Fixed problem in shadow system; register was sometimes corrupted after
575 Fixed problems in the ISAM subsystem. Caused difficulties when updating
578 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
579 the rank and record number.
581 Fixed bug in the isam subsystem - caused a malfunction when accessing
582 words which occurred more than 10000 times.
584 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
587 Server can now run under inetd. Use option -i, and -w <directory> to
588 set working directory to desired location.
590 New zebraidx command: clean - removes temporary shadow files.
592 Fixed bug in ISAM system. Occurred rarely during register updates.
594 Logging during index merge phase is improved. The remaining running
597 Temporary files generated by zebraidx are removed after each run.
599 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
600 when doing scan operations in dictionaries with European characters.
604 A whole slew of updates, to make the first publicized release. Get the doc
609 Memory-problems in ISAM fixed. More blocktypes added to the default setup
610 to increase performance on larger databases.
612 Various minor changes in data management system.
616 A couple of portability-problems resolved.
618 Changed some malloc() to xmalloc().