4 Perl Filter and Perl API. By Peter Popovics.
6 For zebra.cfg, if no profilePath is specified, directory
7 (prefix)/share/idzebra/tab
10 Zebra Examples in examples . Zebra tests in test.
12 Bug fix: sort index was not properly modified on
13 record updates/deletes.
15 Fix handling of character entities for sgml filter.
17 Move data1 to Zebra (used to be part of YAZ).
21 Fix character encoding of scan response terms.
23 Fix character decoding of scan request terms.
25 Fix ESpec handling (requires YAZ 1.9.1)
27 Fix searches for complete fields.
31 When name zebra is used in a filename or directory 'idzebra' is used
32 instead to avoid confusion with GNU zebra (routing software).
34 Zebra server stops with a fatal error if config file cannot be read.
36 New config setting, followLinks, that controls whether update of files
37 should follow symbolic. Set it to 1 (for enable) or 0 (to disable).
38 By default symbolic links are followed.
40 Fix MARC transfer . MARC fields had wrong data for multiple fields.
42 XML record reader moved from YAZ to Zebra, to make YAZ less
43 dependant on external libraries.
45 Zebra uses yaz_iconv which is mini iconv library supporting UTF-8,
46 UCS4, ISO-8859-1. This means that Zebra does UNICODE even
47 on systems that doesn't offer iconv.
49 XML record reader supports external system entities.
53 New .abs-directive "xpath" that takes one argument: "enable"
54 or "disable" to enable and disable XPath -indexing. If no "xpath"
55 direcive is found in .abs-file , XPath-indexing is disabled to ensure
56 backwards compatibility. For missing .abs-files XPath-indexing is
57 enabled so that such records are searchable.
59 Zebra warns about missing .abs-file only once (for each type).
61 Fixed a bug in file update where already-inserted files could
66 Zebra license changed to GNU GPL.
68 XPath-like queries used when RPN string attributes are used, eg.
69 @attr 1=/portal/title sometitle
70 @attr 1=/portal/title[@xml:lang=da] danishtitle
71 @attr 1=/portal/title/@xml:lang da
72 @attr 1=//title sometitle
74 Zebra uses UTF-8 internally:
75 1) New setting "encoding" for zebra.cfg that specifies encoding for
76 OCTET terms in queries and record encoding for most transfer syntaxes
77 (except those that use International Strings, such as GRS-1).
78 2) The encoding of International strings is UTF-8 by default. It
79 may be changed by character set negotiation. If character set
80 negotiation is in effect and if records are selected for conversion
81 these'll be converted to the selected character set - thus overriding
82 the encoding setting in zebra.cfg.
83 3) New directive "encoding" in .abs-files. This specifies the external
84 character encoding for files indexed by zebra. However, if records
85 themselves have an XML header that specifies and encoding that'll be used
88 XML filter (-t grs.xml).
90 Multiple registers. New setting in resource 'root' that holds base
91 directory for register(s). A group a databases may be put in separate
92 register in directory root/reg by using db name 'reg/db1' ... 'reg/dbN'.
96 Fixes for Digital Unix
98 Implemented hits per term using USR:SearchResult-1.
100 New Zebra API. Locking system re-implemented.
102 --- 1.1.stable 2002/02/20
104 Rank weight can be controlled with attribute type 9. Default
105 value is 34. Recommended values between 1-36.
109 Updated for YAZ version 1.8.
111 Added support for termsets - a result set of terms matching
112 a given query. For @attr 8=<set> creates termset named <set>.
114 Added support for raw retrieval. Element Set Name R forces the
115 text filter which returns the record in its original form.
117 Added numerical sort - triggered by structure=numeric (4=109).
119 Remote record import using Z39.50 Extended Services and Segments.
121 Fixed bug where updating a database with user-defined attributes
122 could corrupt the register (bad storeKeys).
124 Multi-threaded version.
126 Fixed bug regarding proximity.
128 Documentation updates.
130 Fixed bug in record retrieval module that occured on 64-bit OSF
135 Fixed bug in makefile for WIN32.
137 Fixed bug in configure script - used bash-specific features.
141 Added support for multiple records in one file for filter grs.sgml.
143 Changed record index structure. New layout is incompatible with
144 previous releases. Added setting "recordcompression" to control
145 compression of records. Possible values are "none" (no
146 compression) and bzip2 (compression using libbz2).
148 Added XML transfer syntax support for retrieval of structured records.
149 Schema in CompSpec is recognised in retrieval of structured records.
151 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
152 that fails, the filter reads the file <filt>.flt (regx style filter).
154 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
155 Zebra's configure script automatically attempts to locate Tcl. For
156 manual Tcl configuration use option --with-tclconfig=<path> to specify
157 where Tcl's library files are located.
159 Implemented "compression" of Dictionary and ISAM system. Dictionary
162 Added "tagsysno" directive to zebra.cfg to control under which tag the
163 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
166 Added "tagrank" as above.
168 Changed file naming scheme for register files from <name>.mf.<no> to
171 Implemented "position"-flag for register type (as defined in
172 default.idx). When set to zero no position (or seqence number) is
173 saved in register for each word occurrence, thus saving some register
176 Implemented database mapping. Using mapdb one can specify a database
177 to be mapped to one or more physical databases. Usage:
178 mapdb <fromdb> <todb> ..
180 Added SOIF-filter. Thanks to Peter Valkenburg.
182 For the regx-filter "end element -record" may trigger a mark-of-record
183 if outer level is reached.
185 Tag sets may be typed in the reference to it. From the .abs-file the
186 "tagset" directive takes a third optional integer type for the tag set
187 referenced. From a .tag-file the "include" directive takes a third
188 optional type as well. The old "type" directive in the tag set itself
189 is still recognized but acts as the default type for the tag set.
191 Zebra supports the specification of arbitrary attributes sets, schemas
192 and tag sets, because of the change in YAZ' OID management system.
194 Fixed bug in Sort that caused it NOT to use character mapping as it
197 Zebra now uses GNU configure to generate Makefile(s).
199 Added un-optimised support for left and left/right truncation attributes.
201 Added support for relational operators on text when using RPN queries.
203 Added support for sort specifications in RPN queries. Type 7 specifies
204 'sort' where value 1=ascending, value 2=descending. The use attribute
205 specifies the field criteria as usual. The term specifies priority
206 where 0=first, 1=second, ...
208 Changed the way use attributes are specified in the recordId
211 Maximum number of databases in one Zebra register increased.
213 New setting, databasePath, which specifies that first directory during
214 update traversal is the database name (instead of a fixed one).
216 New setting, explainDatabase, which specifies that databases are
219 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
221 Implemented EXPLAIN database maintenance. Zebra automatically
222 generate - and update CategoryList, TargetInfo, DatabaseInfo,
223 AttributeSetInfo and AttributeDetails records at this stage. The
224 records may be transferred as GRS-1, SUTRS or Explain.
226 Fixed register spec so that colon isn't treated as size separator
227 unless followed by [0-9+-] in order to allow DOS drive specifications.
229 Fixed two bugs in ISAMC system.
231 Changed the way Zebra keeps its maintenance information about attribute
232 sets, available attributes, etc.. Records in "SGML" notation using an
233 EXPLAIN schema is now used when appropriate.
235 Bug fix: Index didn't handle update/insert/delete of the same record
236 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
237 first occurence of a record is considered.
239 Most searches now return correct number of hits.
241 New modular ranking system. Interested programmers are encouraged to
242 inspect rank1.c and improve the algorithm.
244 Bug fix: Lock files weren't removed as they should on NT.
246 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
247 specify a "sort register". Refer to the gils sample records which refer
248 to index type "s" which is specified as "sort" in the default.idx file.
249 Each sort criteria can either be Ascending or Descending and at most
250 three sort elements can be specified.
252 Bug fix: Character mapping didn't work for text files.
256 Simple ranked searches now return correct number of hits.
258 The test option (-s) only makes a read-lock on the index as well
259 as using read-only operations anywhere.
261 Moved towards generic character mapping. Configuration file default.idx
262 specifies character map files for register types w, p, u, etc.
264 Implemented "begin variant" for the sgml.regx - filter.
266 Fixed a few memory leaks.
268 Added support for C++, headers uses extern "C" for public definitions.
270 Bug fix: The show records facility (-s) only displayed information for
271 the first record in a file (and not for every record in the file).
273 Added option "-f <n>" to limit the logging of record operations. After
274 <n> records has been processed no logging is performed (unless errors
277 Bug fix: the compressed ISAM system didn't handle update operations
280 Added setting, "maxResultSetSize", to hold the number of records to
281 save in a result set.
283 Bug fix: Complete phrase did't work for search operations.
285 Bug fix: temporary result sets weren't deleted.
287 Reduced disk space for saved keys (storeKeys = 1).
289 Added optional, physical ANY (key replication)
291 Implemented proximity operator in search.
293 Bug fix: the path name buffers used by file match traversal routines
294 have been extended to support long file names.
296 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
297 configuration file. The resulting register without "storeKeys" is about
298 half the size, and the memory used by zebraidx during phase 2 (merge) is
299 reduced to a minimum.
301 Reworked the way Regexp-2 queries with error tolerance are handled and
302 specified. The documentation has been updated accordingly.
304 Bug fix: Zebrasrv didn't search correctly when queries contained masking
305 characters. This bug was introduced in 1.0a8.
307 Zebrasrv now tag records with the proper database name.
309 New settings, memMax and keyTmpDir.
311 Changed name of setting lockDir (previously called lockPath) and
312 setTmpDir (previously called tempSetPath).
314 Generalized and changed record type specifications. In short, there are:
316 grs.sgml structured, "SGML-like" syntax
317 grs.regx.<filter> structured, Regular expression filter
318 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
319 is the name of an abstract syntax file.
320 Bug fix: Result sets weren't sorted in operations involving boolean
321 operations with "ranked" operands.
325 Added national character-handling subsystem.
329 Small modifications to input filters and profiles.
331 Added support for SOIF syntax (with private OID).
335 Fixed buffer-size problem in indexing.
337 Added compression to temporary files for updating.
339 Added phrase registers.
341 Added dynamic mapping of search attribute to multiple termlists (ANY).
343 Scan support in multiple databases/registers.
345 Configuration settings are case-insensitive and single dash (-)
346 characters are ignored in comparisons.
348 The index processing ignores empty files - warning given.
350 New option to zebraidx (-V) displays version information.
354 Fixed problem in file-update system.
356 Fixed problem in shadow system; register was sometimes corrupted after
361 Fixed problems in the ISAM subsystem. Caused difficulties when updating
364 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
365 the rank and record number.
367 Fixed bug in the isam subsystem - caused a malfunction when accessing
368 words which occurred more than 10000 times.
370 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
373 Server can now run under inetd. Use option -i, and -w <directory> to
374 set working directory to desired location.
376 New zebraidx command: clean - removes temporary shadow files.
378 Fixed bug in ISAM system. Occurred rarely during register updates.
380 Logging during index merge phase is improved. The remaining running
383 Temporary files generated by zebraidx are removed after each run.
385 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
386 when doing scan operations in dictionaries with European characters.
390 A whole slew of updates, to make the first publicized release. Get the doc
395 Memory-problems in ISAM fixed. More blocktypes added to the default setup
396 to increase performance on larger databases.
398 Various minor changes in data management system.
402 A couple of portability-problems resolved.
404 Changed some malloc() to xmalloc().