1 Implemented "compression" of Dictionary and ISAM system. Dictionary
4 Added "tagsysno" directive to zebra.cfg to control under which tag the
5 sysstem ID is placed. Use tagsysno: 0 to disable Zebra's system number
8 Added "tagrank" as above.
10 Changed file naming scheme for register files from <name>.mf.<no> to
13 Implemented "position"-flag for register type (as defined in
14 default.idx). When set to zero no position (or seqence number) is
15 saved in register for each word occurrence, thus saving some register
18 Implemented database mapping. Using mapdb one can specify a database
19 to be mapped to one or more physical databases. Usage:
20 mapdb <fromdb> <todb> ..
22 Added SOIF-filter. Thanks to Peter Valkenburg.
24 For the regx-filter "end element -record" may trigger a mark-of-record
25 if outer level is reached.
27 Tag sets may be typed in the reference to it. From the .abs-file the
28 "tagset" directive takes a third optional integer type for the tag set
29 referenced. From a .tag-file the "include" directive takes a third
30 optional type as well. The old "type" directive in the tag set itself
31 is still recognized but acts as the default type for the tag set.
33 Zebra supports the specification of arbitrary attributes sets, schemas
34 and tag sets, because of the change in YAZ' OID management system.
36 Fixed bug in Sort that caused it NOT to use character mapping as it
39 Zebra now uses GNU configure to generate Makefile(s).
41 Added un-optimised support for left and left/right truncation attributes.
43 Added support for relational operators on text when using RPN queries.
45 Added support for sort specifications in RPN queries. Type 7 specifies
46 'sort' where value 1=ascending, value 2=descending. The use attribute
47 specifies the field criteria as usual. The term specifies priority
48 where 0=first, 1=second, ...
50 Changed the way use attributes are specified in the recordId
53 Maximum number of databases in one Zebra register increased.
55 New setting, databasePath, which specifies that first directory during
56 update traversal is the database name (instead of a fixed one).
58 New setting, explainDatabase, which specifies that databases are
61 Modified Zebra so that it works with ASN.1 compiled code for YAZ.
63 Implemented EXPLAIN database maintenance. Zebra automatically
64 generate - and update CategoryList, TargetInfo, DatabaseInfo,
65 AttributeSetInfo and AttributeDetails records at this stage. The
66 records may be transferred as GRS-1, SUTRS or Explain.
68 Fixed register spec so that colon isn't treated as size separator
69 unless followed by [0-9+-] in order to allow DOS drive specifications.
71 Fixed two bugs in ISAMC system.
73 Changed the way Zebra keeps its maintenance information about attribute
74 sets, available attributes, etc.. Records in "SGML" notation using an
75 EXPLAIN schema is now used when appropriate.
77 Bug fix: Index didn't handle update/insert/delete of the same record
78 (i.e. same recordId) in one run (one invocation of zebraidx). Only the
79 first occurence of a record is considered.
81 Most searches now return correct number of hits.
83 New modular ranking system. Interested programmers are encouraged to
84 inspect rank1.c and improve the algorithm.
86 Bug fix: Lock files weren't removed as they should on NT.
88 Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
89 specify a "sort register". Refer to the gils sample records which refer
90 to index type "s" which is specified as "sort" in the default.idx file.
91 Each sort criteria can either be Ascending or Descending and at most
92 three sort elements can be specified.
94 Bug fix: Character mapping didn't work for text files.
98 Simple ranked searches now return correct number of hits.
100 The test option (-s) only makes a read-lock on the index as well
101 as using read-only operations anywhere.
103 Moved towards generic character mapping. Configuration file default.idx
104 specifies character map files for register types w, p, u, etc.
106 Implemented "begin variant" for the sgml.regx - filter.
108 Fixed a few memory leaks.
110 Added support for C++, headers uses extern "C" for public definitions.
112 Bug fix: The show records facility (-s) only displayed information for
113 the first record in a file (and not for every record in the file).
115 Added option "-f <n>" to limit the logging of record operations. After
116 <n> records has been processed no logging is performed (unless errors
119 Bug fix: the compressed ISAM system didn't handle update operations
122 Added setting, "maxResultSetSize", to hold the number of records to
123 save in a result set.
125 Bug fix: Complete phrase did't work for search operations.
127 Bug fix: temporary result sets weren't deleted.
129 Reduced disk space for saved keys (storeKeys = 1).
131 Added optional, physical ANY (key replication)
133 Implemented proximity operator in search.
135 Bug fix: the path name buffers used by file match traversal routines
136 have been extended to support long file names.
138 New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
139 configuration file. The resulting register without "storeKeys" is about
140 half the size, and the memory used by zebraidx during phase 2 (merge) is
141 reduced to a minimum.
143 Reworked the way Regexp-2 queries with error tolerance are handled and
144 specified. The documentation has been updated accordingly.
146 Bug fix: Zebrasrv didn't search correctly when queries contained masking
147 characters. This bug was introduced in 1.0a8.
149 Zebrasrv now tag records with the proper database name.
151 New settings, memMax and keyTmpDir.
153 Changed name of setting lockDir (previously called lockPath) and
154 setTmpDir (previously called tempSetPath).
156 Generalized and changed record type specifications. In short, there are:
158 grs.sgml structured, "SGML-like" syntax
159 grs.regx.<filter> structured, Regular expression filter
160 grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
161 is the name of an abstract syntax file.
162 Bug fix: Result sets weren't sorted in operations involving boolean
163 operations with "ranked" operands.
167 Added national character-handling subsystem.
171 Small modifications to input filters and profiles.
173 Added support for SOIF syntax (with private OID).
177 Fixed buffer-size problem in indexing.
179 Added compression to temporary files for updating.
181 Added phrase registers.
183 Added dynamic mapping of search attribute to multiple termlists (ANY).
185 Scan support in multiple databases/registers.
187 Configuration settings are case-insensitive and single dash (-)
188 characters are ignored in comparisons.
190 The index processing ignores empty files - warning given.
192 New option to zebraidx (-V) displays version information.
196 Fixed problem in file-update system.
198 Fixed problem in shadow system; register was sometimes corrupted after
203 Fixed problems in the ISAM subsystem. Caused difficulties when updating
206 Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
207 the rank and record number.
209 Fixed bug in the isam subsystem - caused a malfunction when accessing
210 words which occurred more than 10000 times.
212 Distribution should now include YAZ (Z39.50 protocol stack) to simplify
215 Server can now run under inetd. Use option -i, and -w <directory> to
216 set working directory to desired location.
218 New zebraidx command: clean - removes temporary shadow files.
220 Fixed bug in ISAM system. Occurred rarely during register updates.
222 Logging during index merge phase is improved. The remaining running
225 Temporary files generated by zebraidx are removed after each run.
227 Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
228 when doing scan operations in dictionaries with European characters.
232 A whole slew of updates, to make the first publicized release. Get the doc
237 Memory-problems in ISAM fixed. More blocktypes added to the default setup
238 to increase performance on larger databases.
240 Various minor changes in data management system.
244 A couple of portability-problems resolved.
246 Changed some malloc() to xmalloc().