-Implemented database mapping. Using mapdb one can specify a database
-to be mapped to one or more physical databases. Usage:
-mapdb <fromdb> <todb> ..
-
-Added SOIF-filter. Thanks to Peter Valkenburg.
-
-For the regx-filter "end element -record" may trigger a mark-of-record
-if outer level is reached.
-
-Tag sets may be typed in the reference to it. From the .abs-file the
-"tagset" directive takes a third optional integer type for the tag set
-referenced. From a .tag-file the "include" directive takes a third
-optional type as well. The old "type" directive in the tag set itself
-is still recognized but acts as the default type for the tag set.
-
-Zebra supports the specification of arbitrary attributes sets, schemas
-and tag sets, because of the change in YAZ' OID management system.
-
-Fixed bug in Sort that caused it NOT to use character mapping as it
-should.
-
-Zebra now uses GNU configure to generate Makefile(s).
-
-Added un-optimised support for left and left/right truncation attributes.
-
-Added support for relational operators on text when using RPN queries.
-
-Added support for sort specifications in RPN queries. Type 7 specifies
-'sort' where value 1=ascending, value 2=descending. The use attribute
-specifies the field criteria as usual. The term specifies priority
-where 0=first, 1=second, ...
-
-Changed the way use attributes are specified in the recordId
-specification.
-
-Maximum number of databases in one Zebra register increased.
-
-New setting, databasePath, which specifies that first directory during
-update traversal is the database name (instead of a fixed one).
-
-New setting, explainDatabase, which specifies that databases are
-EXPLAIN aware.
-
-Modified Zebra so that it works with ASN.1 compiled code for YAZ.
-
-Implemented EXPLAIN database maintenance. Zebra automatically
-generate - and update CategoryList, TargetInfo, DatabaseInfo,
-AttributeSetInfo and AttributeDetails records at this stage. The
-records may be transferred as GRS-1, SUTRS or Explain.
-
-Fixed register spec so that colon isn't treated as size separator
-unless followed by [0-9+-] in order to allow DOS drive specifications.
-
-Fixed two bugs in ISAMC system.
-
-Changed the way Zebra keeps its maintenance information about attribute
-sets, available attributes, etc.. Records in "SGML" notation using an
-EXPLAIN schema is now used when appropriate.
-
-Bug fix: Index didn't handle update/insert/delete of the same record
-(i.e. same recordId) in one run (one invocation of zebraidx). Only the
-first occurence of a record is considered.
-
-Most searches now return correct number of hits.
-
-New modular ranking system. Interested programmers are encouraged to
-inspect rank1.c and improve the algorithm.
-
-Bug fix: Lock files weren't removed as they should on NT.
-
-Implemented Z39.50 Sort. Zebra's sort handler uses use attributes to
-specify a "sort register". Refer to the gils sample records which refer
-to index type "s" which is specified as "sort" in the default.idx file.
-Each sort criteria can either be Ascending or Descending and at most
-three sort elements can be specified.
-
-Bug fix: Character mapping didn't work for text files.
-
---- 1.0b1 1998/1/29
-
-Simple ranked searches now return correct number of hits.
-
-The test option (-s) only makes a read-lock on the index as well
-as using read-only operations anywhere.
-
-Moved towards generic character mapping. Configuration file default.idx
-specifies character map files for register types w, p, u, etc.
-
-Implemented "begin variant" for the sgml.regx - filter.
-
-Fixed a few memory leaks.
-
-Added support for C++, headers uses extern "C" for public definitions.
-
-Bug fix: The show records facility (-s) only displayed information for
-the first record in a file (and not for every record in the file).
-
-Added option "-f <n>" to limit the logging of record operations. After
-<n> records has been processed no logging is performed (unless errors
-occur).
-
-Bug fix: the compressed ISAM system didn't handle update operations
-correctly.
-
-Added setting, "maxResultSetSize", to hold the number of records to
-save in a result set.
-
-Bug fix: Complete phrase did't work for search operations.
-
-Bug fix: temporary result sets weren't deleted.
-
-Reduced disk space for saved keys (storeKeys = 1).
-
-Added optional, physical ANY (key replication)
-
-Implemented proximity operator in search.
-
-Bug fix: the path name buffers used by file match traversal routines
-have been extended to support long file names.
-
-New C(ompressed) ISAM system. To enable it, specify "isam: c" in the
-configuration file. The resulting register without "storeKeys" is about
-half the size, and the memory used by zebraidx during phase 2 (merge) is
-reduced to a minimum.
-
-Reworked the way Regexp-2 queries with error tolerance are handled and
-specified. The documentation has been updated accordingly.
-
-Bug fix: Zebrasrv didn't search correctly when queries contained masking
-characters. This bug was introduced in 1.0a8.
-
-Zebrasrv now tag records with the proper database name.
-
-New settings, memMax and keyTmpDir.
-
-Changed name of setting lockDir (previously called lockPath) and
-setTmpDir (previously called tempSetPath).
-
-Generalized and changed record type specifications. In short, there are:
- text plain SUTRS
- grs.sgml structured, "SGML-like" syntax
- grs.regx.<filter> structured, Regular expression filter
- grs.marc.<abs> Reads *MARC records in the ISO2709 format. <abs>
- is the name of an abstract syntax file.
-Bug fix: Result sets weren't sorted in operations involving boolean
-operations with "ranked" operands.
-
---- 1.0a8 1996/6/6
-
-Added national character-handling subsystem.
-
-Various fixes.
-
-Small modifications to input filters and profiles.
-
-Added support for SOIF syntax (with private OID).
-
---- 1.0a7 1996/5/16
-
-Fixed buffer-size problem in indexing.
-
-Added compression to temporary files for updating.
-
-Added phrase registers.
-
-Added dynamic mapping of search attribute to multiple termlists (ANY).
-
-Scan support in multiple databases/registers.
-
-Configuration settings are case-insensitive and single dash (-)
-characters are ignored in comparisons.
-
-The index processing ignores empty files - warning given.
-
-New option to zebraidx (-V) displays version information.
-
---- 1.0a6 1996/2/24
-
-Fixed problem in file-update system.
-
-Fixed problem in shadow system; register was sometimes corrupted after
-a commit operation.
-
---- 1.0a5 1996/2/10
-
-Fixed problems in the ISAM subsystem. Caused difficulties when updating
-existing registers.
-
-Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
-the rank and record number.
-
-Fixed bug in the isam subsystem - caused a malfunction when accessing
-words which occurred more than 10000 times.
-
-Distribution should now include YAZ (Z39.50 protocol stack) to simplify
-installation.
-
-Server can now run under inetd. Use option -i, and -w <directory> to
-set working directory to desired location.
-
-New zebraidx command: clean - removes temporary shadow files.
-
-Fixed bug in ISAM system. Occurred rarely during register updates.
-
-Logging during index merge phase is improved. The remaining running
-time is estimated.
-
-Temporary files generated by zebraidx are removed after each run.
-
-Bug fix: Dictionary didn't handle 8-bit characters correctly; was obvious
-when doing scan operations in dictionaries with European characters.
-
---- 1.0a4 1996/01/11
-
-A whole slew of updates, to make the first publicized release. Get the doc
-and check it out.
-
---- 1.0a3 1995/12/06
-
-Memory-problems in ISAM fixed. More blocktypes added to the default setup
-to increase performance on larger databases.
-
-Various minor changes in data management system.