3 The software was split in two products Zebra (for testing,
4 non-profit use) and the commercial product Z'mbol. Zebra no
5 longer supports INDEX UPDATES, i.e. zebraidx should be invoked only
6 once for each register. Refer to LICENSE.zebra for more info.
8 Added support for multiple records in one file for filter grs.sgml.
10 Changed record index structure. New layout is incompatible with
11 previous releases. Added setting "recordcompression" to control
12 compression of records. Possible values are "none" (no
13 compression) and bzip2 (compression using libbz2).
15 Added XML transfer syntax support for retrieval of structured records.
16 Schema in CompSpec is recognised in retrieval of structured records.
18 Changed Tcl record filter so that it attemps to read <filt>.tflt. If
19 that fails, the filter reads the file <filt>.flt (regx style filter).
21 Implemented new Tcl record filter - use grs.tcl.<filter> to enable it.
22 Zebra's configure script automatically attempts to locate Tcl. For
23 manual Tcl configuration use option --with-tclconfig=<path> to specify
24 where Tcl's library files are located.
26 Implemented "compression" of Dictionary and ISAM system. Dictionary
29 Added "tagsysno" directive to zebra.cfg to control under which tag the
30 system ID is placed. Use tagsysno: 0 to disable Zebra's system number
33 Added "tagrank" as above.
35 Changed file naming scheme for register files from <name>.mf.<no> to
38 Implemented "position"-flag for register type (as defined in
39 default.idx). When set to zero no position (or seqence number) is
40 saved in register for each word occurrence, thus saving some register
43 Implemented database mapping. Using mapdb one can specify a database
44 to be mapped to one or more physical databases. Usage:
45 mapdb <fromdb> <todb> ..
47 Added SOIF-filter. Thanks to Peter Valkenburg.
49 For the regx-filter "end element -record" may trigger a mark-of-record
50 if outer level is reached.
52 Tag sets may be typed in the reference to it. From the .abs-file the
53 "tagset" directive takes a third optional integer type for the tag set
54 referenced. From a .tag-file the "include" directive takes a third
55 optional type as well. The old "type" directive in the tag set itself
56 is still recognized but acts as the default type for the tag set.
58 Zebra supports the specification of arbitrary attributes sets, schemas
59 and tag sets, because of the change in YAZ' OID management system.
61 Fixed bug in Sort that caused it NOT to use character mapping as it
64 Zebra now uses GNU configure to generate Makefile(s).
66 Added un-optimised support for left and left/right truncation attributes.
68 Added support for relational operators on text when using RPN queries.
70 Added support for sort specifications in RPN queries. Type 7 specifies
71 'sort' where value 1=ascending, value 2=descending. The use attribute
72 specifies the field criteria as usual. The term specifies priority
73 where 0=first, 1=second, ...
75 Changed the way use attributes are specified in the recordId
78 Maximum number of databases in one Zebra register increased.
80 New setting, databasePath, which specifies that first directory during
81 update traversal is the database name (instead of a fixed one).
83 New setting, explainDatabase, which specifies that databases are
86 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
88 Implemented EXPLAIN database maintenance. Zebra automatically
89 generate - and update CategoryList, TargetInfo, DatabaseInfo,
90 AttributeSetInfo and AttributeDetails records at this stage. The
91 records may be transferred as GRS-1, SUTRS or Explain.
93 Fixed register spec so that colon isn't treated as size separator
94 unless followed by [0-9+-] in order to allow DOS drive specifications.
96 Fixed two bugs in ISAMC system.
98 Changed the way Zebra keeps its maintenance information about attribute
99 sets, available attributes, etc.. Records in "SGML" notation using an
100 EXPLAIN schema is now used when appropriate.
102 Bug fix: Index didn't handle update/insert/delete of the same record
103 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
104 first occurence of a record is considered.
106 Most searches now return correct number of hits.
108 New modular ranking system. Interested programmers are encouraged to
109 inspect rank1.c and improve the algorithm.
111 Bug fix: Lock files weren't removed as they should on NT.
113 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
114 specify a "sort register". Refer to the gils sample records which refer
115 to index type "s" which is specified as "sort" in the default.idx file.
116 Each sort criteria can either be Ascending or Descending and at most
117 three sort elements can be specified.
119 Bug fix: Character mapping didn't work for text files.
123 Simple ranked searches now return correct number of hits.
125 The test option (-s) only makes a read-lock on the index as well
126 as using read-only operations anywhere.
128 Moved towards generic character mapping. Configuration file default.idx
129 specifies character map files for register types w, p, u, etc.
131 Implemented "begin variant" for the sgml.regx - filter.
133 Fixed a few memory leaks.
135 Added support for C++, headers uses extern "C" for public definitions.
137 Bug fix: The show records facility (-s) only displayed information for
138 the first record in a file (and not for every record in the file).
140 Added option "-f <n>" to limit the logging of record operations. After
141 <n> records has been processed no logging is performed (unless errors
144 Bug fix: the compressed ISAM system didn't handle update operations
147 Added setting, "maxResultSetSize", to hold the number of records to
148 save in a result set.
150 Bug fix: Complete phrase did't work for search operations.
152 Bug fix: temporary result sets weren't deleted.
154 Reduced disk space for saved keys (storeKeys = 1).
156 Added optional, physical ANY (key replication)
158 Implemented proximity operator in search.
160 Bug fix: the path name buffers used by file match traversal routines
161 have been extended to support long file names.
163 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
164 configuration file. The resulting register without "storeKeys" is about
165 half the size, and the memory used by zebraidx during phase 2 (merge) is
166 reduced to a minimum.
168 Reworked the way Regexp-2 queries with error tolerance are handled and
169 specified. The documentation has been updated accordingly.
171 Bug fix: Zebrasrv didn't search correctly when queries contained masking
172 characters. This bug was introduced in 1.0a8.
174 Zebrasrv now tag records with the proper database name.
176 New settings, memMax and keyTmpDir.
178 Changed name of setting lockDir (previously called lockPath) and
179 setTmpDir (previously called tempSetPath).
181 Generalized and changed record type specifications. In short, there are:
183 grs.sgml structured, "SGML-like" syntax
184 grs.regx.<filter> structured, Regular expression filter
185 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
186 is the name of an abstract syntax file.
187 Bug fix: Result sets weren't sorted in operations involving boolean
188 operations with "ranked" operands.
192 Added national character-handling subsystem.
196 Small modifications to input filters and profiles.
198 Added support for SOIF syntax (with private OID).
202 Fixed buffer-size problem in indexing.
204 Added compression to temporary files for updating.
206 Added phrase registers.
208 Added dynamic mapping of search attribute to multiple termlists (ANY).
210 Scan support in multiple databases/registers.
212 Configuration settings are case-insensitive and single dash (-)
213 characters are ignored in comparisons.
215 The index processing ignores empty files - warning given.
217 New option to zebraidx (-V) displays version information.
221 Fixed problem in file-update system.
223 Fixed problem in shadow system; register was sometimes corrupted after
228 Fixed problems in the ISAM subsystem. Caused difficulties when updating
231 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
232 the rank and record number.
234 Fixed bug in the isam subsystem - caused a malfunction when accessing
235 words which occurred more than 10000 times.
237 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
240 Server can now run under inetd. Use option -i, and -w <directory> to
241 set working directory to desired location.
243 New zebraidx command: clean - removes temporary shadow files.
245 Fixed bug in ISAM system. Occurred rarely during register updates.
247 Logging during index merge phase is improved. The remaining running
250 Temporary files generated by zebraidx are removed after each run.
252 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
253 when doing scan operations in dictionaries with European characters.
257 A whole slew of updates, to make the first publicized release. Get the doc
262 Memory-problems in ISAM fixed. More blocktypes added to the default setup
263 to increase performance on larger databases.
265 Various minor changes in data management system.
269 A couple of portability-problems resolved.
271 Changed some malloc() to xmalloc().