changelog

harvest是一个下载html网页得机器人

--- 1.3.14 2003/11/29

Fix bug with shadow and result set handling.

Implement MARCXML to ISO2709 conversion.

--- 1.3.13 2003/09/26

Add missing examples for Windows install.

Fix bug in regx filter to make it "greedy" again. This bug appeared
in version 1.3.12.

Fix a few tests.

--- 1.3.12 2003/09/08

Fix XML error handling. Stop XML parse immediately if XML parse error
occur (i.e.  produce one error only).

Zebra ignores "unsupported use attribute" for individual databases
when search multiple databases (unless all databases fail).

New filter grs.marcxml which works like grs.marc but produces MARCXML.

Added support for database deletion. It is possible to create/drop
a database from zebraidx utility. Note: only for isam:b.

Write zebrasrv.pid to lockdir.

Bug fix: result sets were not recovered correctly. Had to
add ODR handle for zebra_search_RPN in order to make it work.

Fixed a bug in regx filters that didn't do anchors (^) correctly.

Fixed a bug in searches with X-Path searches sometimes giving "extra"
hits.

Zebra server checks for zebrasrv.pid and refuses to start if it is already
locked by another (running) zebrasrv.

Fixed a bug with text being chunked in pieces for the grs.xml filter.

--- 1.3.11 2003/04/25

xelm code updates. xelm works regardless state of 'xpath enable/disable'
Avoid -L/usr/lib since that is already default library path.

Allow multiple updates within one transaction.

Fixed a bug with >2GB files (overflow in integer expression).

--- 1.3.10 2003/04/01

Fix linker error for Perl module.

Fix bug in and operation which in some cases could result in "extra"
hits. Bug was introduced in 1.3.5.

Fix bug in handling of schema conversion when producing numeric tags.

--- 1.3.9 2003/03/27

Zvrank updates. 

Add missing files doc/zvrank.txt and doc/marc_indexing.xml.

--- 1.3.8 2003/03/26

Zvrank: an experimental ranking algorithm. See doc/zvrank.txt and
source in index/zvrank.c. Enable this by using rank: zvrank in zebra.cfg.
Contributed by Johannes Leveling <Johannes.Leveling at fernuni-hagen.de>

livrank: another experimental ranking algorithm. Source in livcode.c.
Enable this by using rank: livrank in zebra.cfg and use -DLIV_CODE=1
for CFLAGS.
Contributed by Pete Mallinson, University of Liverpool. 

Advanced MARC indexing. See doc/marc_indexing.xml
 Oleg Kolobov <oleg at lib.tpu.ru>

Perl API updates and fixes. 
 Peter Popovics <pop at technomat.hu>

Fixed 'zebraidx delete'.

Implemented 'zebraidx clean'.

64-bit offsets for register files on WIN32 (no 2 GB limit).

Fixed a few memory leaks WRT sorting.

--- 1.3.7 2003/02/27

Fixed error handling : error code was not properly returned.

Support Truncation 104 (CCL).

--- 1.3.6 2003/02/25

Added missing source files for perl extension.

--- 1.3.5 2003/02/23

Implemented xelm directive.

Updated for newer version of YAZ (introduction of string schema).

Directory examples/zthes now part of distribution (was missing
in previous release).

New .abs directive, systag, that control where to put retrieval
information. The directive takes two arguments: system tag, element name.
System tag is one of : rank, sysno, size.

--- 1.3.4 2002/11/26

Perl Filter and Perl API. By Peter Popovics.

For zebra.cfg, if no profilePath is specified, directory
 (prefix)/share/idzebra/tab
is used.

Zebra Examples in examples . Zebra tests in test.

Bug fix: sort index was not properly modified on 
record updates/deletes.

Fix handling of character entities for sgml filter.

Move data1 to Zebra (used to be part of YAZ).

--- 1.3.3 2002/10/05

Fix character encoding of scan response terms.

Fix character decoding of scan request terms.

Fix ESpec handling (requires YAZ 1.9.1)

Fix searches for complete fields.

--- 1.3.2 2002/09/09

When name zebra is used in a filename or directory 'idzebra' is used
instead to avoid confusion with GNU zebra (routing software).

Zebra server stops with a fatal error if config file cannot be read.

New config setting, followLinks, that controls whether update of files
should follow symbolic. Set it to 1 (for enable) or 0 (to disable).
By default symbolic links are followed.

Fix MARC transfer . MARC fields had wrong data for multiple fields.

XML record reader moved from YAZ to Zebra, to make YAZ less 
dependant on external libraries.

Zebra uses yaz_iconv which is mini iconv library supporting UTF-8,
UCS4, ISO-8859-1. This means that Zebra does UNICODE even
on systems that doesn't offer iconv.

XML record reader supports external system entities.

--- 1.3.1 2002/08/20

New .abs-directive "xpath" that takes one argument: "enable"
or "disable" to enable and disable XPath -indexing. If no "xpath"
direcive is found in .abs-file , XPath-indexing is disabled to ensure
backwards compatibility. For missing .abs-files XPath-indexing is
enabled so that such records are searchable.

Zebra warns about missing .abs-file only once (for each type).

Fixed a bug in file update where already-inserted files could
be treated as "new".

--- 1.3.0 2002/08/05

Zebra license changed to GNU GPL.

XPath-like queries used when RPN string attributes are used, eg.
   @attr 1=/portal/title sometitle
   @attr 1=/portal/title[@xml:lang=da] danishtitle
   @attr 1=/portal/title/@xml:lang da
   @attr 1=//title sometitle

Zebra uses UTF-8 internally:
1) New setting "encoding" for zebra.cfg that specifies encoding for
OCTET terms in queries and record encoding for most transfer syntaxes
(except those that use International Strings, such as GRS-1).
2) The encoding of International strings is UTF-8 by default. It
may be changed by character set negotiation. If character set
negotiation is in effect and if records are selected for conversion
these'll be converted to the selected character set - thus overriding
the encoding setting in zebra.cfg.
3) New directive "encoding" in .abs-files. This specifies the external
character encoding for files indexed by zebra. However, if records
themselves have an XML header that specifies and encoding that'll be used
instead.

XML filter (-t grs.xml).

Multiple registers. New setting in resource 'root' that holds base
directory for register(s). A group a databases may be put in separate
register in directory root/reg by using db name 'reg/db1' ... 'reg/dbN'.

--- 1.1.1 2002/03/21

Fixes for Digital Unix

Implemented hits per term using USR:SearchResult-1.

New Zebra API. Locking system re-implemented.

--- 1.1.stable 2002/02/20

Rank weight can be controlled with attribute type 9. Default
value is 34. Recommended values between 1-36.

--- 1.1 2001/10/25

Updated for YAZ version 1.8.

Added support for termsets - a result set of terms matching
a given query. For @attr 8=<set> creates termset named <set>.

Added support for raw retrieval. Element Set Name R forces the
text filter which returns the record in its original form.

Added numerical sort - triggered by structure=numeric (4=109).

Remote record import using Z39.50 Extended Services and Segments.

Fixed bug where updating a database with user-defined attributes
could corrupt the register (bad storeKeys).

Multi-threaded version.

Fixed bug regarding proximity.

Documentation updates.

Fixed bug in record retrieval module that occured on 64-bit OSF 
architectures.

--- 1.0.1 2000/2/10

Fixed bug in makefile for WIN32.

Fixed bug in configure script - used bash-specific features.

--- 1.0 1999/12/10

Added support for multiple records in one file for filter grs.sgml.

Changed record index structure. New layout is incompatible with
previous releases. Added setting "recordcompression" to control
compression of records. Possible values are "none" (no
compression) and bzip2 (compression using libbz2).

Added XML transfer syntax support for retrieval of structured records.