1 New filter present_chunk. This filter allows splitting of present requests into smaller chunks.
3 New filter sd_remove, which replaces surrogate diagnostics with
4 SUTRS records. This filter tries to deal with clients that breaks
5 when receiving surrogate diagnostics.
7 new filter http_client. Same role as z3950_client, but just for
8 HTTP. Allows Metaproxy to operate as a HTTP proxy.
10 New filter http_rewrite1, which serves as purpose on how to rewrite
11 HTTP content with Metaproxy.
13 Use libboost-system if available, because newer versions of libboost-threads
14 requires libboost-system.
16 Allow frontend_net to serve SSL/HTTPS, because we can specify a server
21 zoom: Torus setting: authenticationMode which may hold values "basic"
26 configure: check for Libxslt support in YAZ and rely on definitions
27 from yaz-config, rather than doing own xslt/xml2 checks.
29 Allow timestamp format for log lines to be given with option -m
30 for metaproxy. Similar to yaz-ztest/GFS option -m.
32 Document log category 'line' for log filter.
34 Solr configuration example in etc/config-solr.xml
36 multi: do not mess with request package. For scan and search,
37 database-names were modified and the request package was left with
38 dangling pointers that caused a log filter to fail (request package
39 inspected after multi was invoked).
41 Documentation: fix id of metaproxy-config ref .
43 Documentation: update for USEMARCON support.
47 record_transform: allow OPACXML to OPAC conversion
49 zoom: document content-proxy
51 zoom: document db parm content-{user,password}, torus_url. Also
52 <torus auth_url="..> which makes zoom operate in authenticated mode
57 zoom: fix http://-check. SRU search broken in 1.3.51.
61 zoom: only append http:// for SRU if not already given . Makes it
62 possible to use https-URLs.
64 Use yazpp 1.4 or later due to new ABI.
66 frontend_net: allow max package size to be specified. Controlled by
67 attribute 'max_recv_bytes' of element 'port'.
71 For most generated diagnostics by filters, typically temporary
72 system error, augment addinfo message with filter name.
74 Add support for CentOS 6 packages.
76 sru_z3950: interpret Z39.50 diagnostics part of Init Response.
78 Add man page for metaproxy-config.
82 zoom: new config element passthru. This defines an element set that is
83 passed verbatim to the backend in pz2 mode.
85 auth_simple: allow both idPass and open auth. Also fix SEGV that could
90 z3950_client: fix string handling for init diagnostics in the case where
93 query_rewrite: no charset conversion for error queries. Avoid performing
94 charset conversion for query conversion errors. The resulting Type-1
95 query is invalid in this case.
99 For graceful stop (SIGUSR1), metaproxy will kill children processes.
101 Log when metaproxy is invoked in test mode (-t).
103 Log PID for each log message.
105 multi: combine both NSDs and multiple NSDs into one (diagnostics).
107 z3950_client: fixup multiple NSD's too. Like surrogate diagnostics,
108 a (backend=target) is appended for each diagnostic so that can be
109 determined the origin of error.
111 multi: hideerrors also in use for present response.
113 Solr example in zoom man page.
115 Fix typo in query_rewrite config example.
117 Log at least first non surrogate diagnostic. Instead of
118 "Z_Records_multipleNSD"
120 multi: Fix check for opt Records in present response. A SEGV could occur
121 if a target did not return records and no diagnostics.
123 --- 1.3.46 2012/09/24
125 Yet another fix for graceful stop.
127 --- 1.3.45 2012/09/12
129 sru_z3950: relay surrogate diagnostics.
131 --- 1.3.44 2012/09/10
133 zoom: Honor extraArgs, strip # in zurl.
135 multi: fix SEGV for scan. Reported by Rustam T. Usmanov.
137 zoom: url_recipe allow %{var[reg]} substitutions.
138 It's like ${var[reg]} but does URI component encoding as well.
140 --- 1.3.43 2012/08/22
142 RPM/Deb: require yazpp 1.3.2, because it fixes a missing close of
143 non-keepalive HTTP sessions.
145 http_file: allow zero size files (bug fix)
147 Fix zoom schema: auth_url is optional
149 --- 1.3.42 2012/08/20
151 zoom: fix un-init memory (could result in SEGV at session close)
153 frontend_net: handle X-Forwarded-For. This is stored in package.origin()
154 and may be used in filters as usual.
156 zoom: authentication via Torus lookup
157 Enabled by new configuration setting: auth_url . If this is defined,
158 the zoom module will contact Torus for auth/IP lookup and that will
159 define realm to be used in session.
161 --- 1.3.41 2012/08/10
163 virt_db: Fix database name - first character we removed by mistake.
164 Bug introduced in 1.3.40.
166 --- 1.3.40 2012/08/06
168 virt_db: Don't use "unix path" as database for Unix sockets.
170 --- 1.3.39 2012/08/02
172 z3950_client: Don't tamper with / in zurl - fixes problems
173 using Unix sockets for backends.
175 session_shared: fix integer overflow problem with hit count.
177 session_shared: avoid long usage of cached queries.
179 zoom: New database argument , torus_url to set URL of Torus
180 record to be fetched.
182 --- 1.3.38 2012/07/04
184 Fixes for 'metaproxy reload' for RPM/Debian packages.
186 zoom: Allow rpn2cql conversion to be augmented with a properties file.
187 Element rpn2cql can be specified per-target for the zoom filter.
189 log: New category "line" which is a single-line log message with
190 most important parts of a HTTP/Z39.50 request/response.
192 --- 1.3.37 2012/06/01
194 frontend_net: add facility to report live statistics about response
195 times and current thread usage. The report is an XML document
196 and is triggered for a specific URL path. This is set by <stat-req>
197 in the configuration of frontend_net. By default this report is
198 disabled (same as empty value for <stat-req>).
200 Fix reload problem in init.d script for RPM/Debian.
201 The '/etc/init.d/metaproxy reload' in some cases would stop but not
202 start metaproxy - effectively stopping the service.
204 Don't display start log message when config testing (-t).
206 zoom: avoid CCL message limit of 1K in ZOOM filter.
208 --- 1.3.36 2012/05/10
210 metaproxy init script reacts to reload which does graceful stop +
211 start and is used by logrorate script.
213 --- 1.3.35 2012/05/09
215 Fixes for Windows compilation.
217 Metaproxy daemon reacts to SIGUSR1 in which case it will leave
218 existing sessions running but terminate the monitor process that is
219 used in keepalive mode.
221 Change start log message to 'metaproxy start'. Was 'Metaproxy start'
222 before. Consistent with 'metaproxy stop' message.
224 zoom: document zoom's proxy_timeout
226 z3950_client: fixup addinfo for init response
228 virt_db: return other diagnostic if init is rejected. Diagnostic 236:
229 "Access to specified database denied" is returned, but only if init
230 response from backend does not carry diagnostics already.
232 multi: relays user info for first rejected target. The other-information
233 field for init response for first rejected target is in common init
234 response. This ensures that some backend init diagnostics are returned to
237 --- 1.3.34 2012/04/25
239 frontend_log: extend logging (when message is given in config).
241 --- 1.3.33 2012/04/25
243 zoom: Fix check for proxy. Use diagnostic 1074 for proxy failures.
245 --- 1.3.32 2012/04/24
247 sru_z3950 filter passes through incoming Z39.50 requests again. Was
248 not handled by mistake in Metaproxy versions 1.3.29, 1.3.30 and 1.3.31.
250 --- 1.3.31 2012/04/24
252 zoom: fixes for retry/proxy failover logic. More logging.
254 --- 1.3.30 2012/04/23
256 zoom: return addinfo="proxy failure" for proxy failures. This also
257 changes the scheme for dealing with proxies a bit. zoom now always
258 do proxy check, even if there's no failover. Fortunately, that's not
261 zoom: Init rejected wo diagnostics maps to Bib-1:1014.
262 Bib-1 1014, "Init/AC: Authentication System error", seems pretty
263 generic. We don't know why the init would fail; IP, user, block IP, etc.
264 sru_z3950 filter maps this to SRU diagnostic 3: "Authentication error".
266 zoom: guess if invalid SRU response was an auth failure
268 session_shared: disable session retry by default . Can be enabled by
269 restart="true" in resultset section.
271 --- 1.3.29 2012/04/18
273 zoom: may read cf-proxy's config settings.
274 This reduces manual configuration of the content proxy server host.
275 The ZOOM module will use the old style session.proxyhost if "server"
276 is given (deprecated) and use the new style proxyhost/session if
277 "config_file" is in use.
279 frontend_net: remove incoming requests that can not be handled
280 Requests in queue for filter frontend_net are removed if client
281 closes connection for the session and request is not yet handled.
283 sru_z3950: serialize requests. This is to ensure that pipelined
284 HTTP requests are handled properly.
286 --- 1.3.28 2012/04/04
288 New class, wrbuf, that wraps YAZ' WRBUF.
290 --- 1.3.27 2012/03/30
292 Metaproxy daemon is now running as user "metaproxy". This user is
293 managed by package maintainer scripts. The user information is stored
294 in /etc/metaproxy/metaproxy.user .
296 --- 1.3.26 2012/03/20
298 New filter, sort, that allows sorting of XML records via Z39.50
301 Filter record_transform: USEMarcon support. For example:
302 <retrieval syntax="usmarc">
303 <backend syntax="unimarc" name="F">
304 <usemarcon stage1="/etc/usemarcon/uni2us/uni2us.ini"/>
308 Filter multi: empty route pattern uses route as default.
310 <target route="z3950.indexdata.com">z3950.indexdata.com</route>
311 may use the shorter notation
312 <target route="z3950.indexdata.com"/>
314 Filter query_rewrite: use config path to locate XSLT.
316 Filter frontend_net: log statistics.
317 If a custom message element in frontend_net configuration it makes
318 the frontend_net filter produce a log entry whenever an operation
319 is completed. The log is always written using yaz_log with the
320 custom message given, the package ID (session ID) , the time
321 the operation has been active (end-to-end) , the threads currently
322 active/total and the size of the request input/output queues.
324 query_rewrite: charset conversion of query terms.
325 This is an optional feature. Enabled by element <charset> in
326 configuration with attribute 'from' and 'to' that specifies
327 from/to encodings. The default 'from' encoding is UTF-8.
329 Filter record_transform: honor piggyback searches.
331 Filter zoom: re-connect when database is reused.
332 Re-connect is necessary if a connection is lost or a timeout occurs.
333 If not, we'll be seeing zero hits, when we shouldn't.
335 --- 1.3.25 2012/02/29
337 zoom: Change scheme for dealing with content proxy URLs. The module
338 now has its own common XSL transform that is enabled by record_xsl
339 attribute in the configuration. This XSL gets parameter cproxyhost
340 that holds the host for the content proxy session . The genearted-url
341 is created only if urlRecipe is enabled. In previous version default
342 value of urlRecipe was ${md-electronic-url}; it is now empty and
343 disabled by default. Also generated-url no longer includes the content
344 proxy host. Content proxying URLs is supposed to the handle in the record_xsl
347 zoom: new setting timeout that specifies timeout for outgoing Z39.50/SRU
348 connections. Default value is 40 (seconds).
350 zoom: tune CCL to Z39.50 diagnostics mapping. Throw Bib-1: 108
351 "Malformed query" for syntax errors and related ones; throw
352 Bib-1: 3 "Unsupported search" for everything else. Details from
353 the CCL parser is provided as additional-info.
355 multi: new setting hideerrors that makes multi only relay diagnostics
356 to a client if all backends fail.
358 --- 1.3.24 2012/02/23
360 zoom: empty ccl_map field-mappings disables CCL map.
362 zoom: fix Explain search that could return error if session was
365 --- 1.3.23 2012/02/10
367 zoom: returns Explain records for database IR-Explain---1. The
368 target profile records are converted to Explain records via XSLT.
370 session_shared: make error recovery configurable. Whether a search
371 is restarted on errors or not, is configurable by attribute "restart"
372 in element "resultset" in configuration.
374 session_shared: only relay init for first request. session_shared, for
375 each backend class, now only relays first init request (rather than all).
376 The module only needs to save init response info once. This avoids the
377 need to check for session max.
379 --- 1.3.22 2012/02/02
381 zoom: fix memory leaks.
383 session_shared: maximum number of sessons is configurable. Default
384 value is 100. Result-sets for backends without named result sets are
385 only re-used if databases is identical for a search. This is under the
386 assumption that performance may suffer for those backends when
387 changing the database for each search.
389 multi: combines diagnostics from all backends. All diagnostics from
390 backends are combined into multiple non-surrogate diagnostics; rather
391 than just one diagnostic from first backend.
393 --- 1.3.21 2011/12/27
395 zoom: relay realm to cproxy parameter file.
397 Configuration: Allow filter collection element inside route. This
398 makes it possible to include multiple filters at once.
400 zoom: nocproxy also disables urlRecipe.
402 --- 1.3.20 2011/12/21
404 zoom: return diagnostic if CQL sortby conv fails. Diagnostic Bib-1 214
405 "Illegal sort relation" is returned. Gets translated to SRU diagnostic
406 90: "Unsupported direction value".
408 zoom: honor database argument nocproxy. This disables creating a content
409 connector session (for non-CF targets, usually) and also relays nocproxy
410 as database argument to a CF target.
412 --- 1.3.19 2011/12/16
414 zoom: Multiple proxy hosts may be given for proxy rich database
415 parameter. List is comma separated.
417 http_file: decodes URI paths properly. Does not return 404: not found
418 if no prefix are matches. Instead packages are passed on.
420 --- 1.3.18 2011/12/08
422 zoom: content-{user,password,proxy} are passed on to content proxy
423 system and takes precedence over user,password,proxy .
425 sru_z3950: SRU extra argument x-log-enable=1 enables a search response
426 with a log element including log material from children filters. At
427 this point, only the zoom filter uses this log facility. It will
428 eventually be used by other filters as well. In particular it might be
429 useful for this feature to track all filters in used during a search.
431 zoom: for x-log-enable=1, APDUs sent by ZOOM C, records as received
432 and queries as they are manipulated are logged.
434 zoom: extend addinfo with native diagnostics. Diagnostics as received
435 by ZOOM C are put into addinfo - including ZOOM, HTTP, SRU and Bib-1
436 diagnostics. This indicates both a backend diagnostic and the original
439 zoom: default urlRecipe value is ${md-electronic-url}
441 zoom: target profile setting sruVersion is recognized.
443 --- 1.3.17 2011/11/17
445 zoom: log target profile record fetched (AKA Torus).
447 --- 1.3.16 2011/11/17
449 Change target profile parameter CfSubDb to CfSubDB.
451 --- 1.3.15 2011/11/12
453 zoom: bug fix: realm was relayed to CF targets by mistake (realm only
454 makes sense to the zoom module itself).
456 --- 1.3.14 2011/11/11
458 zoom: realm may be given as part of database.
460 --- 1.3.13 2011/10/26
462 Fix Origin class assigment method; was removd by mistake in 1.3.12.
464 --- 1.3.12 2011/10/26
466 zoom: database args x-name=value are passed through to backend database.
468 SRU filter: user may specify session ID that is passed to log entries
469 that follows. It is specified by using x-session-id in the SRU arguments.
471 zoom: fix null pointer reference which would occur for bad url parameter
472 inside "torus" or if url was not given.
474 --- 1.3.11 2011/09/09
475 Fix bug in filter session_shared where sessions would not expire
476 properly (session ttl). This in turn could make the target close the
477 connection before expected and session_shared would return diagnostic
478 2: system temporarily available.
480 --- 1.3.10 2011/09/09
482 zoom: new target profile setting: sortmap_field. If sortmap_field is given
483 the field is mapped to the value for the sortmap. Values not matching
484 sortmap_field are passed verbatim.
486 zoom: new target profile setting: sortStrategy. One of: "z3950", "type7",
487 "cql", "sru11" or "embed". The "embed" chooses type-7 or CQL sortby
488 depending on whether RPN or CQL is actually sent to the target.
492 zoom: urlRecipe result is stored in <pz:metadata type="generated-url">.
494 zoom: For content proxy authentication is stored in param name
495 "auth", instead of "authentication".
499 zoom: relay schema in SRU mode. Previously recordSchema was not affected
504 zoom: new target profile element literalTransform that holds XSLT
505 (encoded as string) for target. Only if present and non-zero length it is
506 considered present. This takes precedence over transform.
508 Don't rely on trang anymore for Git checkout builds. Configuration in etc
509 will only be properly validated if trang is available. From now on only
510 relax NC files are bundled with the source dist.
512 Updates to check for Boost unit test (autoconf stuff). On MacOSX this
513 component was not detected when it should be.
517 z3950_client: mark non-surrogate diagnostics from backend.
519 zoom: a proxy may be specified for HTTP fetch of target profiles.
523 Honor piggyback. Makes some SRU targets behave that insist on
524 maximumRecords > 0, but also increases performance.
528 Fix dlpath in installed metaproxy.xml for RPM/Deb package. The
529 file was not update for libdir/metaproxy4 in version 1.3.2.
533 Change location of Metaproxy modules from libdir/metaproxy to
534 libdir/metaproxy4. Directory libdir/metaproxy is also owned by
535 libmetaproxy3 and, thus, should not be used by libmetaproxy4.
537 New facility to dump APDUs from zoom filter. Enabled by
538 <log apdu="true"/> in the zoom filter configuation.
540 zoom filter bug fix: SRU diagnostics received from backend was
541 not properly converted to Bib-1 diagnostics.
543 Package metaproxy depends on libmetaproxy4, same version.
547 zoom: fix a bug WRT passing authentication parameters to backends.
551 Fixes for windows Makefile.
553 --- 1.2.10 2011/07/25
555 Change major version of metaproxy library from 3 to 4. This in turn
556 makes new package names for Debian and RPM.
560 zoom: enable marc-8 encoding by default for usmarc and opac (in pz2
563 zoom: configurable element sets for record transforms.
565 zoom: the target profile based transform is specified by element_transform
566 in element torus of of the ZOOM filter configuration ; default value
567 is "pz2". Target profile based retrieval is specified by element_raw
568 in configuration. It will perform same steps, but omit the XSL transform.
569 Default value is "raw".
571 zoom: element set is omitted if not set in profile. But only if pz2
572 transform is in effect. Previously the default element set was to "F".
574 zoom: For non-CF targets database arguments are parsed. User may supply
575 db,user=myuser&password=mypass for non-CF targets. These values override
576 what's given the authentication from the target profile.
578 session_shared: fix reference to freed memory. Would occur if a search
579 response had non-surrogate diagnostics.
583 Route may be given for each port in frontend_net.
587 Documentation for zoom filter. Local target profiles may be specified.
589 Fixes for zoom filter.
593 First version with zoom filter.
597 Filter z3950_client may be configured to always send a close APDU
598 to backend target when connection/session is closed. This will only
599 happen if close APDU is not already sent. Enabled by configuration
600 for z3950_client (force_close).
602 Filter virt_db and multi: relay close APDU.
604 Filter virt_db and multi: relay init size parameters
605 preferredMessageSize and maximumRecordSize.
607 Filter sru_z3950: increase init sz parameters from 1MB to 10 MB.
611 RPM package for Metaproxy works for both SLES11 and Centos 5.5.
613 metaproxy-config: exec_prefix, libdir, includedir. Use these variables
614 as determined by configure.
616 RPM: Release includes 'indexdata' name. Use indexdata in release name so
617 this package can be distinguished from other vendors.
621 Fix filter multi: relay idAuthentication parameters.
625 Add metaproxy-config for returning compiler flags, libraries.
629 Fix --with-boost=PREFIX .
633 session_shared: fix use of maintenance thread.
635 Introduce 'start' method for filters and routers. It gets called after
636 configure and after fork, but before processing. This changes API -
637 from libmetaproxy2 to libmetaproxy3.
641 session_shared: ensure backend session is closed if init rejected
644 z3950_client: fix NULL ptr reference that could occur if two clients
645 connected concurrently and if max-sockets was in effect.
649 Fix bug 3497 - Metaproxy unstable while stopping.
651 Fix bug 3495 - SEGV in SRU filter.
655 Filter multi throws diagnostic 'Present Out of Range' when
656 appropriate - rather than returning 0 records.
658 Filter virt_db: fix bad result reuse. Could happen if a result
659 was overriden and a backend did not supported named result sets.
663 Filter log: category access logs diagnostics even if searchStatus
664 or presentStatus is 'success'.
668 The SRU to Z39.50 filter does repeated Z39.50 present requests
669 to fetch all records. Needed when a Z39.50 server returns partial
670 results (due to message size limits).
674 Metaproxy now kills all child processes that are spawned by
675 modules (in case of fork, exec).
679 Debian package now installs /etc/metaproxy/metaproxy.xml which
680 includes all XML files /etc/metaproxy/filters-enabled .
681 The include facility uses YAZ' yaz_xml_include_simple (YAZ 4.0.1).
685 Package based on YAZ version 4 and YAZ++ 1.2.0. It now includes a
686 development package to facilitate 3rd party Metaproxy modules.
688 --- 1.0.23 2010/01/04
690 Filter virt_db: Close backend filter session when Init rejected is received
691 from it (in which case it's not really closed yet). This will ensure we don't
692 run out of resources such as FDs in this case.
694 sru_z3950 filter: Accept any database (including those not listed).
696 --- 1.0.22 2009/12/03
698 Prepare for 64-bit YAZ. yazproxy will still work with YAZ++ 1.1.4 or
699 later which means YAZ 3.0.47 or later.
701 --- 1.0.20 2009/11/19
703 For filter virt_db, the database is a glob pattern and the virtual
704 database sections are consulted in the order given.
706 --- 1.0.19 2009/07/08
708 For filter multi, the target (for routing) may be given as a glob-pattern.
710 More documentation for filters virt_db and multi.
712 Update schema to allow for no database in sru_z3950 filter.
714 --- 1.0.18 2009/06/30
716 Added limit filter to put sleep (penalty) for heavy use.
718 Filter frontend_net may be configured to limit the number of new connections
719 from same IP to some value (connect-max).
721 Fixed the load_balance filter.
723 --- 1.0.17 2009/06/16
725 Fix path for metaproxy executable for Debian init.d script.
727 --- 1.0.16 2009/06/10
729 SRU to Z39.50 filter honors x-username and x-password. If only
730 x-username is given that translates to open authentication (Z39.50v2). If
731 both x-username and x-password is present that translates to idPass
732 authentication (Z39.50v3).
734 New facility to change current working directory (-w).
736 Update to upstream skeleton of init.d script. Should fix bug #2619.
738 Filter session_shared now caches records (used to only cache connections
741 Filter session_shared now invalidates a Z39.50 session if a server
742 returns -1 hits. This facility was also part of yazproxy and gets around
743 a bug in Voyager-based Z39.50 servers.
745 --- 1.0.15 2008/11/18
747 Fixed reference counting bug in Z39.50 client module (could cause SEGV).
749 --- 1.0.14 2008/06/09
751 Fixed the value of SRU record schema in searchRetrieve response. It was set
752 to a fixed value of "dc" before.
754 Serialize identical SRU requests. This is useful if HTTP client software
755 fires identical requests against metaproxy.
757 Allow Z39.50 target to be specified for SRU requests by using SRU extra
758 parameter x-target. Allows SRU to contact arbitrary Z39.50 targets and
759 avoid static configuration. This facility is handled by the sru_z3950 module
760 and the z3950_client module.
762 Allow maximum number of sockets to be used for a Z39.50 client by the
763 use of SRU extra parameter x-max-sockets. This facility is handled by the
764 sru_z3950 module and the z3950_client module.
766 --- 1.0.13.1 2008/02/29
768 Simplified check for Boost libraries.
770 --- 1.0.13 2008/02/29
772 First Debian package.
774 The sru_z9350 filter now recognizes SRU parameter z-target as being
775 a ZURL of the form host/database .
777 Mergetype may be specified for filter 'multi'.
779 --- 1.0.12 2007/09/19
781 Fixed problem in Makefile WRT library specifictions. This could produce
782 linker errors (when they should not happen).
784 Fixed bug #1341: MetaProxy returning different results. Problem was that
785 fix-up of record database did not normalize the database name.
787 Documentation updates for Windows compilation.
789 --- 1.0.11 2007/06/14
791 Fixed problem with logfile being truncated.
793 --- 1.0.10 2007/05/23
795 Fixed bug #1136: Access rights not enforced.
797 Extension for log module. The log category 'access' logs more details.
798 New category 'user-access' added which is simlar to 'access' but adds
799 the Z39.50 user as for all entries in a session.
803 Added support for configurable default/force target/vhost for module Z39.50
808 Implemented filter, session_shared, which optimizes usage of Z39.50
809 sessions and result sets.
811 New filter, record_transform, which converts MARC/XML records.
813 New filter, sru_z3950, which converts SRU to Z39.50 packages.
815 New filter, load_balance, in development.
817 New filter, zeerex_xplain.
819 XML framework for config files started.
821 Master RelaxNG Compact schema's are found in xml/schema/*.rnc,
822 RelaxNG XML schemas and XML Schema's are generated from RNC syntax.
823 XML config files are checked against RNG and XML Schema's.
825 XSLT transformation framework added in xml/xslt/*.xsl, consisting mainly of
826 LOC Marc21 stylesheets found at http://www.loc.gov/marcxml/xslt.
827 Added stylesheet explain2cqlpqftxt.xsl which transforms a standard SRU ZeeReX
828 explain record to YAZ CQL-to-PQF text config file.
832 Added 'timeout' setting for filter frontend_net which specifies the number
833 of seconds a session is idle before it is closed. Default timeout is
838 Database name in records returned set for virt_db/multi filters.
840 Filter session_shared now functional.
842 Log filter can be configured to write to a given file using 'filename'
843 element. Also information category can be specified with 'category'. If
844 filename is omitted, the log filter writes to stdout. See etc/config5.xml
849 Fixed compilation on Windows.
853 Added documentation for the hidenavailable option for the multi filter.
857 Fixed bug #573: Hide errors for individual servers. If the element
858 'hideunavailable' is given in the configuration, individual servers
859 being unavailable are hidden (unless all are unavailable).
861 Fixed bug #574: Database names are recognised case-sensitively.
863 Fixed bug #567: Fix up database name in Name-Plus-Record.
865 Fixed bug #568: Update win/makefile for VS 2005.
867 Fixed bug #569: Some options throws unknown exception.
871 More information about virtual hosts. The 'etc' directory is part of the
876 Build instructions for Windows. NMake makefile part of distribution tar.
882 Filters functional: auth_simple, backend_test, frontend_net, http_file,
883 log, multi, query_rewrite, template, virt_db, z3950_client.
885 Filters in development: session_shared.
887 Pseudo-filters: template, dl