Revision history for Perl extension Net::Z3950::ZOOM.

1.28 Fri Oct 15 13:34:41 BST 2010

• In the test-suite, provide a more explicit report when the scan identity test (display term == term) fails.
• The displayTerm==term assertion is now case-insensitive, as it ought always to have been: previously, the test-suite relied on a specific implementaton detail of the test-server, which has recently changed causing extraneous test-suite failures.
• Also in the test-suite for scan, remove the test that all title-terms are in the general-term list, an assumption that should never have been made.

1.27 Wed Aug 11 17:13:07 BST 2010

• Support for Index Data build procedures, including making Debian/Ubuntu and Red Hat packages from clean tarballs.
• No upstream changes -- packaging only.

1.26 Tue Jun 8 16:43:29 BST 2010

• Tweak the test-suite so that it works correctly on Fedora Core 12 (2.6.31.5-127.fc12.x86_64). For some reason, attempts to connect to a non-existent host can fail with ERROR_TIMEOUT and no addinfo, rather than ERROR_CONNECT and the hostname as addinfo; and the number of terms to request in a scan needs to be explicitly specified in an option.
• Add "debclean" target to generated Makefile.
• Remove extraneous and misleading old CVS IDs.

1.25 Fri Feb 19 15:04:26 GMT 2010

• Fix test-suite not to run the "packages" tests against test.indexdata.com, which has gone away, but against z3950.indexdata.com, like the other tests. A new server runs on a different port for these tests.
• Rename zdump.pl to zoomdump, and add it to the set of programs installed.
• Switch to git for version control. Not that it should make any difference to the Perl distribution.
• Add semicolons to the commented-out sample configuration lines for Windows in Makefile.PL

1.24 Tue Jun 17 11:31:08 BST 2008

• When Net::Z3950::ZOOM::record_get() fetches an XML record because the requested OPAC record is empty, it now wraps it in an OPAC wrapper, making the difference invisible to application code.

1.23 Mon Jun 9 14:53:15 BST 2008

• Net::Z3950::ZOOM::record_get() now patches around the problem of naughty servers that refuse to return anything for an OPAC record when there is no non-bibliographic part, by falling back on requesting an XML record in such cases.

1.22 Tue May 27 14:00:12 BST 2008

• Fix Net::Z3950::ZOOM::record_get() to use a struct datachunk when appropriate, e.g. for "render" not for "database" and "syntax".
• Remove the unused $len reference parameter from record_get() and $record->get(): this is now used in the underlying C layer to make Perl strings of the right length, and is of no value higher up the stack.
• Fix a bug in ZOOM::ResultSet::records(): requests including the last record in the set were incorrectly declined.
• Better Debian packaging: use "make debian" to create new "debian/output" directory containing .deb package file, changes file, etc.
• Clear up a few warnings in ZOOM.xs
• Minor documentation improvements.

1.21 Mon Oct 29 12:07:25 GMT 2007

• In the "typemap" file's handling of opaquechar*, use STRLEN type for unusedlen in instead of unsigned: this prevents a (possibly serious) warning on some 64-bit architectures, although applications that do not use the option_binary() methods will be safe with the previous release.
• Add explicit "#include <yaz/log.h>" to ZOOM.xs in the hope of preventing undeclared-function warnings that some users have reported but which I have been unable to reproduce.

1.20 Fri Sep 21 17:51:55 BST 2007

• Add new sample program, samples/zoom/zoomscan.pl
• samples/zoom/zoomtst1.pl now accepts arbitrary options at the end of the command-line, so that (for example) you can specify a non-USMARC record syntax.
• Add new functions Net::Z3950::ZOOM::diag_srw_str() and ZOOM::diag_srw_str() to map SRW diagnostic codes into human-readable messages.
• ZOOM::Exception() constructor uses diag_srw_str() to fill in the error message, if it is undefined, for SRW errors.
• The render() method of ZOOM::Exception(), and therefore the overloaded stringifying operator, deals with exceptions that have no message().
• Corrected the scan parts of the test-suite that use CQL so that they explicitly perform client-side CQL compilation and send the resulting Type-1 query. Previously, these tests were (accidentally) requesting that CQL be sent as-is to the server, but this mistake was being masked by an error in older versions of ZOOM-C that compiled client-side anyway!

1.19 Mon Jul 9 14:09:31 BST 2007

• Add $conn->exception() method.
• Set version number for Net::Z3950 to 0.99 -- less than the 1.0 version number that will be used when it successfully emulates the old Net::Z3950 module, but superseding the last release, 0.51, of that module.
• Include samples/zoom/zdump.pl in distribution.
• Add "irspy" namespace to samples/zoom/zselect

1.18 Mon Feb 26 14:57:48 GMT 2007

• When a connection is in asynchronous mode, failing operations (search, scan, etc.) no longer throw exceptions. This is because the event-loop in asychronous applications needs to check for errors anyway, in case the server has returned high-level diagnostics such as "unsupported use attribute". So this check within the event-loop is now the only place where error-checking need be done.
• Add new public ZOOM::Connection() function, check(), which throws an exception if an error is pending (even if the connection is asynchronous).
• New YAZ logging level, "zoom_check", notes when errors are detected and either left unreported (asynchronous connections) or thrown as exception (synchronous).

1.17 Thu Feb 22 20:38:45 GMT 2007

• Change Net::Z3950::ZOOM::event() to allocate its array of connection pointers dynamically, so there is no longer an arbitrary limit of 100.
• New connection-level option "checkdebug" emits messages on standard error when checking a connection find an error that is about to result in throwing an exception. There is no reason for you ever to use this, though -- pretend you don't know about it.

1.16 Tue Jan 16 11:18:34 GMT 2007

• Require version 2.1.41 or better of YAZ, so that Init Response options are available using $conn->option("init_opt_sort") etc.
• Include samples/zoom/zhello.pl to exercise these options.
• Add ZOOM_connection_peek_event() and $conn->peek_event().
• Require YAZ version 2.1.45, which is the first to provide ZOOM_connection_peek_event().

1.15 Fri Dec 1 14:17:49 GMT 2006

• ZOOM::Error::INIT is renamed to ZOOM::Error::ZINIT, since INIT is a reserved word in Perl. In version 1.14 and earlier, "require ZOOM" would fail, saying "Too late to run INIT block", and "use ZOOM" would result in ZOOM::Error::INIT having a value equal to its name (why?!) rather than, as intended, Net::Z3950::ZOOM::ERROR_INIT.
• Belatedly added documentation for $rec->error() and $rec->exception().

1.14 Tue Nov 28 17:33:07 GMT 2006

• Add $record->error() to return non-surrogate diagnostics, and $record->exception() to return the same information wrapped in a ZOOM::Exception object.
• Requires YAZ 2.1.40, which provides ZOOM_record_error().
• $conn->error_x() now returns the error-code when called in scalar context, rather than the diagnostic set name.

1.13 Sat Nov 4 16:47:00 GMT 2006

• ZOOM::Connection::create() may now take either a single argument, which is a ZOOM::Options object, or any even number of argument (including zero), which are key => value pairs of options to set.
• ZOOM::Connection::new(), having been refactored to use create(), can now also take a ZOOM::Options argument.
• Documentation now includes information on specifying SRW, SRU-over-GET and SRU-over-POST connections.
• ZOOM::ResultSet::record() throws a diagnostic if asked to retrieve records out of range for the result-set.
• All tests against indexdata.com are now explicitly against z3950.indexdata.com, as the identity of the former name has recently changed.

1.12 (NEVER PUBLICLY RELEASED; these changes are included in 1.13)

• Include the useful example program samples/zoom/zselect, which is installed as part of "make install".
• Add ZOOM_connection_is_idle() and $conn->is_idle().
• Require YAZ version 2.1.35, which is the first to provide ZOOM_connection_is_idle().
• Fix bug in ZOOM::Connection class code that made the difficult to subclass -- when called as $class->SUPER::new(@_), the constructor blessed the new object into ZOOM::Connection rather than info the subclass.

1.11 Thu Aug 31 16:47:53 BST 2006

• Require YAZ version 2.1.17, which has important ZOOM-C bug-fixes.
• Do not use "-Wdeclaration-after-statement" compiler option, since this supported only by GCC (and only recent versions).

1.10 Thu Jun 15 16:42:47 BST 2006

• No functional changes, but use Adam's modified API to ZOOM_query_ccl2rpn(). This incompatible change means that RELEASE 1.09 WILL NOT BUILD against any recent YAZ.

1.09 Tue Jun 13 17:44:43 2006

• Add new function Net::Z3950::ZOOM::query_ccl2rpn(), for client-side CCL compilation.
• Add new ZOOM::Query::CCL2RPN class, encapsulating CCL compiler functionality as a Query subclass. This allows client-side CCL to be used for both search and scan.
• Add two new error-codes, CCL_CONFIG and CCL_PARSE, returned by the client-side CCL facilities.
• Supply a sample CCL profile file: samples/ccl/default.bib, copied from the same-named file distributed with YAZ.
• The test-scripts t/12-query.t and t/22-query.t are extended to also test client-side CCL searching.
• The test-scripts t/15-scan.t and t/25-scan.t are extended to also test client-side CCL scanning.
• Documentation updated to describe use of CCL.
• Add a nice, simple update client: samples/zoom/update.pl

1.08 Thu May 11 22:40:41 BST 2006

• Requires version 2.1.11 of YAZ, not 2.0.11. This is a bugfix: the old reliance on 2.0.11 was merely a typo.

1.07 Thu May 11 17:45:37 BST 2006

• Makefile.PL checks for at least version 2.1.11 of YAZ, and refuses to build if it's not present. Thanks to "gregor" (an otherwise anonymous CPAN tester) for notifying me of the previously poor reporting of failure when running against an earlier YAZ.
• No changes to functionality or documentation.

1.06 Wed Apr 19 21:11:52 BST 2006

• Avoid mixed statement/declaration in ZOOM.xs. sigh Why the heck GCC allows this by default I will never understand.
• Add (commented out) OPTIMIZE option to Makefile.PL, to turn on -Wdeclaration-after-statement, which makes mixed statement/declaration illegal.

1.05 Wed Apr 12 13:31:27 BST 2006

• Implementation of asynchronous events! The Net::Z3950::ZOOM interface provides this through the event, last_event() and event_str() functions. The ZOOM interface provides it through the ZOOM::event() and ZOOM:event_str() functions, and the ZOOM::Connection class's last_event() function.
• New sample programs added illustrating both asynchronous interfaces: samples/net-z3950-zoom/zoomtst3.pl and samples/zoom/zoomtst3.pl respectively. Additional sample programs "async.pl" and "trivial-async.pl" for the ZOOM interface only, the latter being a "shortest possible broadcast search application".
• Added documentation on writing asynchronous applications.
• Added test-scripts "t/19-events.t" and "t/29-event.t" for events on an asynchronous connection.
• Fix ZOOM::Connection::new so that options are handled in accordance with the documentation: applied before the connection is forged, so that "async" and similar options can take effect.

1.04 Mon Apr 3 14:56:11 BST 2006

• The ZOOM-Perl layer now provides access to the underlying ZOOM-C's character-translation functionality, through new optional arguments to ZOOM::Record's render() and raw() methods, and a new underlying get() method.

1.03 Thu Mar 9 12:55:23 GMT 2006

• Allow additional key => value pairs as arguments to the ZOOM::Connectoion constructor; these are added as Connection options before the protocol connection is forged.

1.02 Thu Mar 9 11:36:55 GMT 2006

• Add interface to yaz_version().
• Emit big warning at startup time if YAZ version is less than 2.0.11 (which is what ZOOM-Perl 1.02 requires) unless the file /tmp/ignore-ZOOM-YAZ-version-mismatch exists.
• Fix incorrect ZOOM-package URL in documentation.
• Fix typo ("createdb" package) in documentation.
• The ZOOM::Connection constructor may now be called with only a single argument (host-string) and does not require a dummy port-number argument.

1.01 Thu Dec 22 14:13:34 GMT 2005

• Place some CODE: chunks in "ZOOM.xs" inside curly brackets so that the declarations they begin with are at the start of the block. This avoid mixed code/declarations. (The "correct" solution is to use INIT: clauses in the XS file, but they don't seem to work: the code in them is slapped down right next to the CODE:, so declarations are not acceptable there either.)
• Add new function Net::Z3950::ZOOM::connection_scan1(), which uses a query object to indicate the start-term. This opens the way for using CQL queries for scanning once the underlying ZOOM-C code supports this.
• NOTE BACKWARDS-INCOMPATIBLE CHANGE: The ZOOM::Connection method scan() is renamed scan_pqf(), and a new scan() method is introduced which calls the underlying scan1() function. Thus the scan()/scan_pqf() dichotomy is consistent with that between search()/search_pqf().
• The tests t/15-scan.t and t/25-scan.t now also test for scanning by CQL query. To support these tests, a new files is added to the distribution, "samples/cql/pqf.properties"
• Remove nonsensical clause about CQL sort-specifications from the documentation.
• Add new function Net::Z3950::ZOOM::query_cql2rpn(), for client-side CQL compilation.
• Add new ZOOM::Query::CQL2RPN class, encapsulating CQL compiler functionality as a Query subclass.
• Add two new error-codes, CQL_PARSE and CQL_TRANSFORM, returned by the client-side CQL facilities.
• The test-scripts t/12-query.t and t/22-query.t are extended to also test client-side CQL compilation.
• Add all the yaz_log*() functions within the Net::Z3950::ZOOM namespace.
• Add new ZOOM::Log class for logging, providing aliases for the functions in the Net::Z3950::ZOOM layer.
• Add diagnostic set to rendering of Exception objects.
• Documentation added for CQL compilation and logging.

1.00 Wed Dec 14 11:18:33 GMT 2005

• First distributed version.

0.01 Fri Oct 7 16:14:20 2005

• original version; created by h2xs 1.23 with options

  --name=Net::Z3950::ZOOM --compat-version=5.8.0 \ --omit-constant --skip-exporter --skip-ppport \ --autogen-xsubs yaz/zoom.h -lyaz -lxml2

--

To be done in future releases:

• Complete, test and document "update.pl"
• Create old-style Net::Z3950 compatibility layer.
• Fix memory leaks in callback functions for option sets.
• Fix limitation that option-set callback functions must be specified as strings containing package-qualified function names.