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<title>Redland RDF Application Framework - Release Notes</title>
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<h1>Redland RDF Application Framework - Release Notes</h1>
<h2 id="rel1_0_8"><a name="rel1_0_8">Redland 1.0.8 Changes</a></h2>
<p>The main changes in this release are:</p>
<p>Updated to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.16
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_16">Rasqal 0.9.16 release notes</a>)
from 0.9.15. NOTE: Rasqal's ABI and API changed so Redland 1.0.8
requires 0.9.16 or newer.
</p>
<p>Updated to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.18
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_18">Raptor 1.4.18 release notes</a>)
from 1.4.16.
</p>
<p>Added a new in-memory indexed storage 'trees' using AVL Trees</p>
<p>Issues Fixed:</p>
<ul>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=256">0000256</a>: mysql reconnect not working (MySQL v5 only?)</li>
</ul>
<blockquote>
<p><strong>NOTE:</strong> The next release of redland will NOT
include raptor and rasqal in the tarball, they will be separate
download dependencies.</p>
<p><strong>NOTE</strong>: In the next release of redland, the
<code>redland-config</code> utility that provides the compile and
link args will be deprecated, generate a warning when run and will
turn into a wrapper for <code>pkg-config redland ...</code>
It will be removed in a future release.</p>
</blockquote>
<h3>General Changes</h3>
<p><code>configure</code> was updated to ensure that redland 1.0.8+
will work with rasqal 0.9.16 to 0.9.99 only.
</p>
<h3>Parser Class Changes</h3>
<p><code>librdf_parser_set_feature()</code> now handles setting
feature values as strings or integers, depending on the required
type (although Raptor will handle this too).
</p>
<p>Added <code>librdf_parser_parse_file_handle_as_stream()</code> and
<code>librdf_parser_parse_file_handle_into_model()</code> helper
methods.
</p>
<h3>Serializer Class Changes</h3>
<p><code>librdf_serializer_set_feature()</code> now handles setting
feature values as strings or integers, depending on the required
type (although Raptor will handle this too).
</p>
<h3>Storage Class Changes</h3>
<p>Added a new in-memory storage named "trees" by Dave Robillard that
uses AVLTrees internally for faster indexed triple store/querying.
This is an alpha quality storage since it is brand new and it may be
changed in future.
</p>
<h3>Other Changes</h3>
<p><code>LIBRDF_URI_RDF_MS</code>, <code>LIBRDF_URI_RDF_SCHEMA</code>
public API macros changed definition to pass in a world parameter.
</p>
<p>Added <code>librdf_get_concept_ms_namespace()</code> and
<code>librdf_get_concept_schema_namespace()</code> to make the
concept macros above work.
</p>
<p>Added an rss2atom example program.</p>
<p>Update configure to use autoconf 2.5.x <code>AC_CHECK_TYPES</code>
for testing byte, u32 and u64.</p>
<p>Fixes for resilence under low memory and allocation failures.</p>
<h3>Internal Changes</h3>
<p>Applied some updates from running the Linux 'sparse' utility.</p>
<p>Allow get_context method calls in stream/iterator map functions.
Originally
<a href="http://lists.usefulinc.com/pipermail/redland-dev/2008-May/001756.html">reported on redland-dev 6 May 2008</a>
by John Fieber.
</p>
<p>The storage method
<code>librdf_storage_find_statements_in_context()</code> now uses the
storage factory method find_statements_in_context if it exists,
instead of always using the find_statements factory method and
filtering.
</p>
<h2 id="rel1_0_7"><a name="rel1_0_7">Redland 1.0.7 Changes</a></h2>
<p>The main changes in this release are:</p>
<p>Updated to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.15
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_15">Rasqal 0.9.15 release notes</a>)
from 0.9.14. NOTE: Rasqal's API will change in 0.9.16 so Redland 1.0.7
requires 0.9.15 exactly - no newer, no older.
</p>
<p>Updated to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.16
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_16">Raptor 1.4.16 release notes</a>)
from 1.4.15.
</p>
<p>Added modular storage backends. When
<code>--enable-modular</code> is given to configure, all the storage
major backends are compiled as dynamically loadable modules. The
memory, file and uri storages are always available. This is not
enabled by default as it is a new feature.
</p>
<p>Issues Fixed:</p>
<ul>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000187">0000187</a>: "rdf_query_results.c", line 630: void function cannot return value</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000189">0000189</a>: librdf_uri_is_file_uri: wrong return value</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000203">0000203</a>: API declarations for Symbian portability</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000205">0000205</a>: Memory leak in rdf_query_rasqal.c</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000209">0000209</a>: Null dereference + assertion failures in minimal librdf setup-cleanup</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000213">0000213</a>: Multiple instances of world object make trouble</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000215">0000215</a>: librdf_new_node_from_typed_counted_literal() does not respect parameter lengths</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000218">0000218</a>: librdf_query_execute does not assert model parameter</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000229">0000229</a>: Segmentation fault when invoking librdf_new_model_from_model()</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000230">0000230</a>: on Gentoo/FreeBSD redland fails compilation due to a missing #define pthread.h</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000234">0000234</a>: autogen.sh $dir quoting</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000235">0000235</a>: $(EXEEXT) in tests</li>
<li><a href="http://bugs.librdf.org/mantis/view.php?id=0000236">0000236</a>: EOL issues when building svn version on cygwin</li>
</ul>
<h3>General Changes</h3>
<p><code>configure</code> was updated to ensure that redland 1.0.7
will work with rasqal 0.9.15 only due to the future API change coming
in the next rasqal version.
</p>
<p>Make lots of writable static data truly constant especially from
writable static data from rdf_concepts. This causes a
<strong>SOURCE COMPATIBILITY BREAK</strong>: the
<code>rdf_concepts.h</code> public API node and uri
macros now require a <code>librdf_world*</code> parameter.
</p>
<h3>Parser Class Changes</h3>
<p>Added <code>librdf_parser_set_uri_filter()</code> and
<code>librdf_parser_get_uri_filter()</code> to set and get parser
URI filters, passed on into raptor.
</p>
<h3>Storage Class Changes</h3>
<p>Several SQLite storage improvements and fixes were made:</p>
<ul>
<li>Added transaction support</li>
<li>Handle SQL errors more gracefully</li>
<li>the contains_statement method now works with a blank subject node.</li>
<li>Resource allocation and low mwmory fixes</li>
</ul>
<h3>URI Class Changes</h3>
<p>Added <code>librdf_uri_compare()</code> to compare uri objects
rather than rely on stringifying them and comparing the strings.
</p>
<h3>Internal and Other Changes</h3>
<p>Many low memory and error path, resource leak fixes for parsers,
streams, module factory construction and module initialising.
</p>
<p><code>librdf_serializer_set_namespace()</code> now allows NULL uri
and prefix to be given.
</p>
<p><code>librdf_storage_mysql_transaction_commit()</code> now
terminates if there is no work to commit.
</p>
<p>autogen.sh version comparsion was fixed so that 1.10 is seen as
newer than 1.9.
</p>
<h2 id="rel1_0_6"><a name="rel1_0_6">Redland 1.0.6 Changes</a></h2>
<p>The main changes in this release are:</p>
<p>Updated to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.14
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_14">Rasqal 0.9.14 release notes</a>)
from 0.9.13.
</p>
<p>Updated to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.15
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_15">Raptor 1.4.15 release notes</a>)
from 1.4.13.
</p>
<p>Plus a new transactions API for changes to the graph, implemented
and tested for MySQL.</p>
<p>Added a new query results formatter class to turn a query results
object into a syntax.</p>
<h3>Model Class Changes</h3>
<p>Added a model transaction API:</p>
<ul>
<li><code>librdf_model_transaction_start()</code> to begin the transaction</li>
<li><code>librdf_model_transaction_start_with_handle()</code> to begin it
using an existing connection pointer (such as a MySQL connection)</li>
<li><code>librdf_model_transaction_commit()</code> to commit the changes</li>
<li><code>librdf_model_transaction_rollback()</code> to abort them (automatic
if not commited before a close)</li>
<li><code>librdf_model_transaction_get_handle()</code> to
get a handle associated with a connection.</li>
</ul>
<p>Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=38">Issue #0000038</a>
</p>
<p>Implemented the Transaction API for MySQL (tested) and PostgreSQL
(not tested).
</p>
<p>Invert test in <code>librdf_model_add_submodel()</code>.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=175">Issue#0000175</a>
</p>
<h3>Parser Class Changes</h3>
<p>Added <code>librdf_parser_guess_name()</code> to guess a parser
name from content, similar to how a parser is constructed from
content.
</p>
<p>Added functions to return the namespaces declared during a parse:
<code>librdf_parser_get_namespaces_seen_count()</code> to return the
number seen, <code>librdf_parser_get_namespaces_seen_prefix()</code> to
get the prefix string and
<code>librdf_parser_get_namespaces_seen_uri()</code> to get the
<code>librdf_uri*</code>.
</p>
<h3>Query and Query Results Class Changes</h3>
<p>Added a new <em>Query Results Formatter</em> class building
<code>librdf_query_results_formatter*</code> objects
to turn a query results into a syntax such as SPARQL query results
formats, JSON. New functions:</p>
<ul>
<li>Constructors: <code>librdf_new_query_results_formatter()</code> and
<code>librdf_new_query_results_formatter_by_mime_type()</code>.
</li>
<li>Destructor: <code>librdf_free_query_results_formatter()</code></li>
<li>Method: <code>librdf_query_results_formatter_write()</code>
to write the query results to an iostream.</li>
<li>Helper functions: <code>librdf_query_results_formats_check()</code>
and <code>librdf_query_results_formats_enumerate()</code></li>
</ul>
<p>Added <code>librdf_query_results_is_syntax()</code> to
check if a query result is a syntax, and not any of the other
possibilities - bindings, boolean or graph.
</p>
<h3>Serializer Class Changes</h3>
<p>Default to serializer named "rdfxml" if no name is given to ensure
another rdfxml serializer such as XMP is not returned.
</p>
<h3>Storage Class Changes</h3>
<p>The MySQL storage implements the transaction API. It batches up
all the pending insertions and aggregates them so that any set of
triple writes during the transaction sequence are all done at one
point, with 4 INSERTs only.
</p>
<p>Added a supporting
functions <code>librdf_hash_interpret_template()</code> to
interpolate variables into strings using a librdf_hash of
key/values.</p>
<p>The MySQL storage now takes an optional storage option 'layout'
that can choose between the v1 and v2 SQL schemas (only the table
type has changed). The SQL fragments are described in Turtle files
that are installed and read on startup.
</p>
<h3>Configuration and Build Changes</h3>
<p><strong>Packagers note</strong>: two new files are installed into
PREFIX/share/redland for the MySQL schemas. Without them installed,
the MySQL storage will not work.
</p>
<p>Removed the <code>configure</code> script option
<code>--enable-parsers</code> since Raptor is always required and
always used inside Redland whether or not any parsers were configured.
</p>
<p>Use <code>pkg-config</code> Libs.private in
<code>redland.pc</code> for internal dynamically linked libraries.
</p>
<p><code>redland-config</code> gains an --private-libs option to hold
private libraries moved from --libs which now only contains -L and a
-lrdf.
</p>
<p>Added a building utility <code>touch-mtime.pl</code>
to handle <code>touch -r</code> which does not work on SunOS.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=159">Issue #0000159</a>
</p>
<h3>Other Changes</h3>
<p>Added <code>librdf_world_open()</code> for every public API
constructor or function that mentions librdf_world* and could have
failed to run <code>librdf_world_open()</code> after
<code>librdf_new_world()</code>. This makes
<code>librdf_world_open()</code> entirely optional.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=173">Issue #0000173</a>
</p>
<p><code>rdfproc</code> gains an --transactions / -T option for
enabling transactions on the command line and an --results / -r
option to set the query results formatter name.
</p>
<p>Do not throw away the rasqal node type information now, it is needed
later on in <code>FILTER</code> comparisons.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=153">Issue #0000153</a>
</p>
<p>Fix reference count problem in storages that caused connections
to fail to free in MySQL.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=150">#0000150</a>
</p>
<p>Fix reference count / memory leak in file storage.
</p>
<h2 id="rel1_0_5"><a name="rel1_0_5">Redland 1.0.5 Changes</a></h2>
<p>The main changes in this release are:</p>
<p>Updated to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.13
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_13">Rasqal 0.9.13 release notes</a>)
from 0.9.12.
</p>
<p>Updated to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.13
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_13">Raptor 1.4.13 release notes</a>)
from 1.4.9.
</p>
<p>Plus several API additions and many bug fixes.</p>
<h3>Configuration and Build Changes</h3>
<p><code>configure</code> now removes un-necessary tests for C++ or
F77++ compilers that libtool stupidly insists on. Add lots of
gcc <code>-W</code> flags when they are supported and in maintainer
mode.
</p>
<p>Made <code>configure --with-threads</code> work.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=125">Issue #0000125</a>
</p>
<h3>Model Class Changes</h3>
<p>Methods
<code>librdf_model_add</code>,
<code>librdf_model_add_statement</code>,
<code>librdf_model_add_typed_literal_statement</code>,
<code>librdf_model_add_string_literal_statement</code> and
<code>librdf_model_contains_statement</code>
now enforce only allowing legal RDF triples.
</p>
<p>Added <code>librdf_model_enumerate</code> to list all the
model implementations - currently just one, a model over
a storage.
</p>
<h3>Node Class Changes</h3>
<p>The node class can now encode and decode long literals with length
&gt;65535 using new encoding type 'N'.
</p>
<p>Added new constructor
<code>librdf_new_node_from_typed_counted_literal</code>
to build a typed node with a counted literal string.
</p>
<h3>Parser Class Changes</h3>
<p>Changes to allow NULL base uris in parsing methods, but to fail if
it is omitted but required. Applies to
<code>librdf_parser_parse_as_stream</code>,
<code>librdf_parser_parse_into_model</code>,
<code>librdf_parser_parse_string_as_stream</code>,
<code>librdf_parser_parse_string_into_model</code>,
<code>librdf_parser_parse_counted_string_as_stream</code>
and
<code>librdf_parser_parse_counted_string_into_model</code>
</p>
<p>Added <code>librdf_parser_get_accept_header</code> to get
the <code>Accept</code> header that would be sent with a parser
HTTP fetch of content.
</p>
<h3>Query Class Changes</h3>
<p>Graph names in SPARQL now connect up to redland context nodes
to allow SPARQL <code>GRAPH</code> to work.
</p>
<h3>Serializer Class Changes</h3>
<p>Added new methods to serialize <code>librdf_stream</code>s of triples rather
than just <code>librdf_model</code>:
<code>librdf_serializer_serialize_stream_to_file_handle</code>,
<code>librdf_serializer_serialize_stream_to_file</code>,
<code>librdf_serializer_serialize_stream_to_string</code>,
<code>librdf_serializer_serialize_stream_to_counted_string</code> and
<code>librdf_serializer_serialize_stream_to_iostream</code>.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=92">Issue #0000092</a>
</p>
<h3>Storage Class Changes</h3>
<p>Methods <code>librdf_storage_add_statement</code>,
<code>librdf_storage_add_statements</code> and
<code>librdf_storage_contains_statement</code>
now enforce only allowing legal RDF triples.
</p>
<p>The <em>Memory</em> storage now supports deleting while iterating or
streaming the storage.
</p>
<p>The <em>PostgreSQL</em> storage now accepts option 'database' like
MySQL and other Redland relational databases in addition to the
existing option it accepted, 'dbname'.
</p>
<p><em>SQLite</em> storage fixes:<br />
</p>
<p>
Fix crash in <code>librdf_model_context_remove_statements</code>
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=103">Issue #0000103</a>
</p>
<p>Wrap all <code>sqlite_FREE</code> calls on error messages so that
they are only called with SQLITE API v2.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=105">Issue #0000105</a>
</p>
<p>Check for no language or no datatype when they are NULL
in <code>librdf_storage_sqlite_literal_helper</code>.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=136">Issue #0000136</a>
</p>
<p>Store pending queries while the database is locked doing
a <code>SELECT</code> and do them once the select is done. Such as
deleting triples during a find or serialise.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=139">Issue #0000139</a>
</p>
<p>SQLite storage now has a 'synchronous' storage option which takes
values 'off', 'normal' or 'full' allowing access to the sqlite pragma
to control when commits are synchronised to file.
</p>
<h3>Other changes</h3>
<p><code>rdfproc</code> now allows the base URI for parsing to be set
to null with <code>-</code> and adjust messages to handle this.
</p>
<p>Added some more const fixes to heuristics.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=107">Issue #0000107</a>
</p>
<p>Autodocs for <code>librdf_new_node_from_blank_identifier</code>.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=114">Issue #0000114</a>
</p>
<p>If <code>librdf_storage_sqlite_statement_operator_helper</code> fails,
free the stringbuffer.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=116">Issue #0000116</a>
</p>
<p>Do not read from stream when parsing returns a NULL pointer.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=130">Issue #0000130</a>
</p>
<p>Fix debug call in <code>librdf_query_register_factory</code>,
<code>librdf_storage_hashes_add_remove_statement</code> and
<code>librdf_storage_hashes_contains_statement</code>
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=132">Issue #0000132</a>
</p>
<p>Added rss2ical.c example to turn RSS/Atom 1.0 feeds into
iCalendar using raptor, redland and SPARQL.
</p>
<p>Many minor fixes and changes due to adding lots of -W flags
and using gcc4.
</p>
<h3>SWIG Bindings Interface</h3>
<p>Fixed typo to declare <code>librdf_query_results_get_binding_value</code>
to return a new object.
</p>
<p>Export new function <code>librdf_parser_get_accept_header</code>
</p>
<p>Export version strings and integer constants for raptor:
(<code>raptor_version_string</code>,
<code>raptor_version_major</code>,
<code>raptor_version_minor</code>,
<code>raptor_version_release</code>,
<code>raptor_version_decimal</code>)
and rasqal
(<code>rasqal_version_string</code>,
<code>rasqal_version_major</code>,
<code>rasqal_version_minor</code>,
<code>rasqal_version_release</code>,
<code>rasqal_version_decimal</code>)
</p>
<h2 id="rel1_0_4"><a name="rel1_0_4">Redland 1.0.4 Changes</a></h2>
<p>The main changes in this release are:</p>
<p>Updated to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.12
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_12">Rasqal 0.9.12 release notes</a>)
to update to SPARQL 2006-04-06 for JSON results
</p>
<p>Updated to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.9
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_9">Raptor 1.4.9 release notes</a>)
</p>
<p>Plus fixing some crash bugs in parsing and serializing.</p>
<h3>Configuration and Build Changes</h3>
<p>Now using <a href="http://subversion.tigris.org/">Subversion</a>
for version control and the <a href="INSTALL.html">Redland installation instructions</a> explain how to get Redland from Subversion.</p>
<p>Win32 fixes and VC build files updates from John Barstow.
</p>
<p>Let configure find BDB 4.4</p>
<h3>Node Class Changes</h3>
<p><code>librdf_new_node_from_literal</code>
and <code>librdf_new_node_from_typed_literal</code> now accept empty
strings as an alternative to a NULL language pointer.
</p>
<h3>Parser Class Changes</h3>
<p>Add one more place where it needed handling old and new raptor
statement predicate values
<code>RAPTOR_IDENTIFIER_TYPE_RESOURCE</code> and
<code>RAPTOR_IDENTIFIER_TYPE_PREDICATE</code>.
</p>
<p>Fixed a bad uses of flose() causing a crash in parsing a file or
from a <code>FILE*</code> file handle when run under
newer <code>glibc</code>s.
</p>
<h3>Serializer Class Changes</h3>
<p>Fixed a bad uses of flose() causing a crash in serializing to a
file when run under newer <code>glibc</code>s.
</p>
<h3>Storage Class Changes</h3>
<p>Introduced a <code>UINT64_T_FMT</code> to handle formatting a 64-bit
<code>unsigned</code> <code>int</code> in storages
as <code>%llu</code> is not portable.
</p>
<h2 id="rel1_0_3"><a name="rel1_0_3">Redland 1.0.3 Changes</a></h2>
<p>The main changes in this release are:</p>
<p>Updated to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.11
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_11">Rasqal 0.9.11 release notes</a>)
to update to SPARQL 2005-11-23
</p>
<p>Updated to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.8
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_8">Raptor 1.4.8 release notes</a>)
</p>
<p>A large source re-arrangement was performed for raptor and rasqal
inside redland. All C sources and headers that build the libraries
were moved to the src dir, general documentation in the doc dir and
utilities in the utils dir for each sub-library.
</p>
<p>Version Control change: Redland will be switching to use
<a href="http://subversion.tigris.org/">Subversion</a>
for version control after the 1.0.3 release. Please check the
<a href="http://svn.librdf.org/">Redland Subversion site</a>
for the latest status or the online
<a href="http://librdf.org/INSTALL.html">Redland installation notes</a>
for the redland specific subversion installation information.
</p>
<p>A new PostgreSQL storage backend was added
contributed by Shi Wenzhong based on the MySQL storage backend.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=46">issue #0000046</a>
</p>
<h3>Configuration Changes</h3>
<p>The autogen.sh script for building from CVS was revamped to be
more modular.</p>
<p><code>configure</code> now takes an <code>--enable-gtk-doc</code>
option to enable building of the documentation using the
<code>gtk-doc</code> utility. It is by default enabled only if the
utility is available.
</p>
<h3>Documentation Changes</h3>
<p>The GNOME <code>gtk-doc</code> program is now used to
automatically extract documentation from source comments into
reference documentation. This is then merged with templates and
additional documentation to provide a reference manual for redland
as XML document which is turned into HTML along with GNOME devhelp
support.</p>
<h3>Portability Changes</h3>
<p>Some win32 build fixes were made.</p>
<h3>World Class Changes</h3>
<p><code>librdf_world_get_genid()</code> was changed to include the
process ID in the generated blank ID.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=37">Issue #0000037</a>
(patch from Marc Powell).
</p>
<h3>Node Class changes</h3>
<p><code>librdf_node_encode()</code>: Give an error when a node cannot
be encoded due to string data being too long.
</p>
<h3>Serializer Class changes</h3>
<p>Added <code>librdf_serializer_serialize_model_to_iostream()</code>, not
exposed in the SWIG bindings.
</p>
<h3>Storage Class Changes</h3>
<p>Added a PostgreSQL storage backend contributed by Shi Wenzhong
based on the MySQL storage backend.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=46">Issue #0000046</a>
</p>
<h3>Other Changes</h3>
<p>Deprecated <code>librdf_files_temporary_file_name()</code>.</p>
<p>Deleted some function prototypes defined in headers but never had
code:
<code>librdf_node_init()</code>,
<code>librdf_iterator_finished()</code>,
<code>librdf_storage_get()</code> and
<code>librdf_world_set_uris_hash()</code>
</p>
<p>Added examples/example7.c to read from an RDF/XML file, add a
triple and write it back.</p>
<h2 id="rel1_0_2"><a name="rel1_0_2">Redland 1.0.2 Changes</a></h2>
<p>The changes in this release are:</p>
<ul>
<li>Fix a crash when querying or searching with the model
find_statements method and getting no results</li>
<li>Update to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.10
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_10">Rasqal 0.9.10 release notes</a>)
to provide query results sorting such as SPARQL <code>ORDER BY</code>
and some SPARQL syntax updates.
</li>
<li>Update to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.7
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_7">Raptor 1.4.7 release notes</a>)
to fix some crashes in the RSS tag soup parser and serializer.
</li>
</ul>
<h2 id="rel1_0_1"><a name="rel1_0_1">Redland 1.0.1 Changes</a></h2>
<p>The main changes in this release are to update to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.9
(<a href="http://librdf.org/rasqal/RELEASE.html#rel0_9_9">Rasqal 0.9.9 release notes</a>)
to provide improved SPARQL query support for the revised syntax
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.6
(<a href="http://librdf.org/raptor/RELEASE.html#rel1_4_6">Raptor 1.4.6 release notes</a>)
to
provide a new GRDDL parser as well as updated RSS enclosures support
with the RSS tag soup parser and RSS 1.0 serializer.
</p>
<p>The digest and hash classes now expose public API constructors,
destructors and methods via their header files.</p>
<h3>Configuration changes</h3>
<p>Added <code>--with-memory-signing</code> to check when memory is
allocated / freed across Redland libraries.
</p>
<h3>Portability Fixes</h3>
<p>Added Win32 portability fixes and build configuration (John Barstow)</p>
<h3>Binding API changes</h3>
<p>The following changes were made to the bindings API as
exported by the SWIG interface file <code>Redland.i</code>:</p>
<p>The digest class was added:
constructor <code>librdf_new_digest</code>,
destructor <code>librdf_free_digest</code>
and methods <code>librdf_digest_init</code>,
<code>librdf_digest_update</code>,
<code>librdf_digest_update_string</code>,
<code>librdf_digest_final</code> and
<code>librdf_digest_to_string</code>,.
</p>
<p>The hash class was added as selected functions:
constructors <code>librdf_new_hash_from_string</code> and
<code>librdf_new_hash_from_array_of_strings</code> and destructor
<code>librdf_free_hash</code>.
</p>
<p>The query class methods
<code>librdf_query_get_limit</code>,
<code>librdf_query_set_limit</code>,
<code>librdf_query_get_offset</code> and
<code>librdf_query_set_offset</code> were added.
</p>
<p>Functions were added for accessing parts of structured log messages
as <code>librdf_log_message</code> objects:
<code>librdf_log_message_code</code>,
<code>librdf_log_message_level</code>,
<code>librdf_log_message_facility</code>,
<code>librdf_log_message_message</code>,
<code>librdf_log_message_locator</code>
and <a href="http://librdf.org/raptor/">Raptor</a> <code>raptor_locator</code>
objects:
<code>raptor_locator_line</code>,
<code>raptor_locator_column</code>,
<code>raptor_locator_byte</code>,
<code>raptor_locator_file</code> and
<code>raptor_locator_uri</code>.
</p>
<h3>Digest Class changes</h3>
<p>This class was added to the public API in this release adding
constructor <code>librdf_new_digest</code>,
destructor <code>librdf_free_digest</code>
and methods
<code>librdf_digest_init</code>,
<code>librdf_digest_update</code>,
<code>librdf_digest_update_string</code>,
<code>librdf_digest_final</code>,
<code>librdf_digest_get_digest</code>,
<code>librdf_digest_get_digest_length</code>,
<code>librdf_digest_to_string</code> and
<code>librdf_digest_print</code>
</p>
<h3>Hash Class changes</h3>
<p>This class was added to the public API in this release adding
constructors
<code>librdf_new_hash_from_string</code>,
<code>librdf_new_hash_from_array_of_strings</code> and
<code>librdf_new_hash_from_hash</code>;
destructor
<code>librdf_free_hash</code>;
and methods
<code>librdf_hash_get</code>,
<code>librdf_hash_get_as_boolean</code>,
<code>librdf_hash_get_as_long</code>,
<code>librdf_hash_get_del</code>,
<code>librdf_hash_put_strings</code>,
<code>librdf_hash_print</code>,
<code>librdf_hash_print_keys</code> and
<code>librdf_hash_print_values</code>.
</p>
<h3>Iterator Class changes</h3>
<p>Added a <code>librdf_new_empty_iterator</code> helper to make an
always-empty iterator.</p>
<h3>Log Class changes</h3>
<p>Added <code>LIBRDF_FROM_MEMORY</code> facility.</p>
<h3>Model Class changes</h3>
<p>All methods returning an <code>librdf_iterator</code> or
<code>librdf_stream</code> now return an empty iterator/stream rather
than NULL when returning an empty result sequence. Errors are still
returned as NULL.</p>
<h3>Node Class changes</h3>
<p>Removed unused <code>LIBRDF_NODE_TYPE_RESERVED1</code> (#3) from
<code>librdf_node_type</code> enum.</p>
<h3>Query Class changes</h3>
<p>Update to use Rasqal 0.9.9 API. Redland 1.0.1 will not build with
older Rasqal releases.</p>
<p>The query API gains methods <code>librdf_query_get_limit</code>,
<code>librdf_query_set_limit</code>,
<code>librdf_query_get_offset</code> and
<code>librdf_query_set_offset</code> for setting and getting query
result limit (max results) and offsets (result to start from).</p>
<p>Fixed some across-library memory allocation/frees between redland
and rasqal that caused problems on win32. Requires rasqal 0.9.9 or
newer.</p>
<h3>Stream Class changes</h3>
<p>Added a <code>librdf_new_empty_strea</code> helper to make an
always-empty strea.</p>
<h3>Storage Class changes</h3>
<p>The MySQL store now uses a portable method across endiannesses to
create a 64bit key. This fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=23">Issue #0000023</a>
(Morten Frederiksen)</p>
<blockquote><p><strong>NOTE: This matches the algorithm used for
little-endian systems but big-endian stores will need to serialize
the store before upgrading and reload afterwards.</strong></p></blockquote>
<p>The MySQL store now uses connection pooling to prevent making a new
connection to the database for each request.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=27">Issue #0000027</a>
(Morten Frederiksen)
</p>
<p>The SQLite store now does not skip items with the factory methods
for serializing, finding statements, serializing contexts and getting
context statements.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=6">Issue #0000006</a>
</p>
<p>All store methods that return an <code>librdf_iterator</code> or
<code>librdf_stream</code> now return an empty iterator/stream rather
than NULL when returning an empty result sequence. Errors are still
returned as NULL.</p>
<h3>Other changes</h3>
<p>Added <code>REDLAND_INLINE</code> macro, which can be overridden if
inline is not wanted.</p>
<h2 id="rel1_0_0"><a name="rel1_0_0">Redland 1.0.0 Changes</a></h2>
<p>This is Redland 1.0.0.</p>
<p>The main changes in this release are to update to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.6
to provide improved SPARQL query support for optionals, CONSTRUCT, ASK, builtins,
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.4 to
provide better serializing to RDF/XML and RSS 1.0 and better
RSS tag soup parsing and
a new experimental <a href="http://www.sqlite.org/">SQLite</a>
storage supporting SQLite V2 and V3 libraries.
</p>
<h3>Configuration changes</h3>
<p>The storages compiled into redland can be individually selected
with the <code>--enable-storages=</code><em>LIST</em> configure
option.
</p>
<p>The default for <code>--with-dmalloc</code> is now no. Reason:
<a href="http://valgrind.kde.org/">valgrind</a>.</p>
<h3>Portability Fixes</h3>
<p>Removed configure altering the search PATH - which was a bad idea
as it makes the configure environment different from the user's.</p>
<p>Added <code>/opt/local</code> to the BerkeleyDB / SleepycatDB
search path to help darwinports.</p>
<p>To help Redland built as an OSX Framework with ObjectiveC, Redland
public headers can be put in a different directory structure if
<code>LIBRDF_OBJC_FRAMEWORK</code> is defined in the build
environment. In this case the headers are found in a subdirectory
<code>Redland</code>. This only applies to the public Redland header
files that <code>#include</code> other public header files -
<code>redland.h</code> including <code>librdf.h</code>,
<code>librdf.h</code> including several <code>rdf_*.h</code> files
and Rasqal's <code>rasqal.h</code> including
<code>raptor.h</code>. (Patch from René Puls)
</p>
<h3><code>rdfproc</code> RDF processor utility program changes</h3>
<p>Added a <code>size</code> command calling
<code>librdf_model_size</code>.</p>
<h3>Model Class changes</h3>
<p>Added <code>librdf_model_contains_context</code> to find a context
node in a model.</p>
<p>The <code>librdf_model_sync</code> now returns a success or failure
int.</p>
<h3>Parser Class Changes</h3>
<p>Updated to <a href="http://librdf.org/raptor/">Raptor</a> 1.4.4
providing an updated RSS tag soup parser with fixes for RSS 0.9,
RSS.1.1 and Atom.</p>
<p>The constructor now finds the correct parser when given NULL
arguments for mime type or type URI.</p>
<h3>Query Class changes</h3>
<p>Update to <a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.5
providing improved SPARQL support: new optionals handling,
<code>CONSTRUCT</code> to make RDF graphs, formatting of query
results in the SPARQL XML format along with many other improvements
and fixes.</p>
<p>Added base_uri argument to <code>librdf_new_query</code></p>
<p>Added
<code>librdf_query_results_to_counted_string</code>,
<code>librdf_query_results_to_string</code>,
<code>librdf_query_results_to_file_handle</code> and
<code>librdf_query_results_to_file</code>
to get the results of a query written to a syntax using
Rasqal's rasqal_query_results_write and Raptor's XML writer API.
</p>
<p>Added boolean returning methods:
<code>librdf_query_results_is_bindings</code>,
<code>librdf_query_results_is_boolean</code>,
<code>librdf_query_results_is_graph</code> for testing result formats
and <code>librdf_query_results_get_boolean</code> to get a boolean
result back.</p>
<h3>Serializer Class changes</h3>
<p>Updated to <a href="http://librdf.org/raptor/">Raptor</a> 1.4.4
providing a new XML writer API, an improved RDF/XML serializer
allowing user namespace declarations and relative URIs, a new RSS 1.0
serializer.</p>
<p>The serializers now respect any user-declared namespaces done with
<code>librdf_serializer_set_namespace</code> by passing it on to the
Raptor serializer with <code>raptor_serialize_set_namespace</code>.
At present only the Raptor RDF/XML serializer uses these
user-declared namespace hints.
</p>
<p>The constructor now finds the correct serializer when given NULL
arguments for mime type or type URI.</p>
<h3>Storage Class changes</h3>
<p>The storages compiled into redland can be individually selected
with the <code>--enable-storages=</code><em>LIST</em> configure option.
</p>
<p>SQLite Storage. A new experimental storage supporting
<a href="http://www.sqlite.org/">SQLite</a> V2 and V3 libraries.
</p>
<p>MySQL storage. Return failure early if the connection failed
rather than try to continue opening the storage.</p>
<p>MySQL storage. Only use <code>mysql_real_escape_string</code> if
a connection was made. Do not try to free resources such as the
mysql DB connection owned by iterators after an error, let
<code>librdf_free_iterator</code> tidy up. (Patch from Morten
Frederiksen)</p>
<h3>URI Class changes</h3>
<p>Handle resolving against a base URI with an omitted path.</p>
<h3>Other changes</h3>
<p>Removed <code>librdf_concept_labels</code> - never used or
exported.</p>
<h2 id="rel0_9_19"><a name="rel0_9_19">Redland 0.9.19 Changes</a></h2>
<p>This is Redland 1.0 Release Candidate 2.</p>
<p>Redland's License was changed from LGPL 2.1/MPL 1.1 to
LGPL 2.1/Apache 2</p>
<p>The main changes in this release are to update to use
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.5
to provide initial SPARQL query support and to use
<a href="http://librdf.org/raptor/">Raptor</a> 1.4.2 to
provide serializing to RDF/XML and N-Triples.</p>
<h3><code>rdfproc</code> RDF processor utility program changes</h3>
<p>Updated to allow an optional base URI for the
<code>serialize</code> command and to handle the three forms
of query results - bindings, graph or boolean.</p>
<h3>Model Class changes</h3>
<p>Added <code>librdf_model_to_string</code> and
<code>librdf_model_to_counted_string</code> to serialize a model to a
string using the Serializer class functionality. Exported
<code>librdf_model_to_string</code> to the language bindings.</p>
<h3>Query Class changes</h3>
<p>Now requires
<a href="http://librdf.org/rasqal/">Rasqal</a> 0.9.5
which provides initial support for the
<a href="http://www.w3.org/TR/2004/WD-rdf-sparql-query-20041012/">
SPARQL Query Language for RDF</a>,
W3C Working Draft, 12 October 2004
from the W3C RDF Data Access Working Group (DAWG).</p>
<h3>Serializer Class changes</h3>
<p>Pass on errors and warnings via the existing Redland logging
mechanism. Previously they all went to stderr, the default.</p>
<p>Switched to use <a href="http://librdf.org/raptor/">Raptor</a> 1.4
series serializing classes so now provides RDF/XML and N-Triples
serializing and will gain any fugure serializing formats as Raptor
adds them.</p>
<p>Using the Raptor support, the serializers can now serialize to
strings in addition to the existing serializing to FILE* and files.
This is performed by the new methods:
<code>librdf_serializer_serialize_model_to_file_handle</code>
(deprecating <code>librdf_serializer_serialize_model</code>),
<code>librdf_serializer_serialize_model_to_string</code>
and <code>librdf_serializer_serialize_model_to_counted_string</code>.
Exported <code>librdf_serializer_serialize_model_to_string</code>
to the language bindings.</p>
<h3>Storage Class changes</h3>
<p><code>librdf_storage_context_add_statement</code> and
<code>librdf_storage_context_add_statements</code> -
With a NULL context, call the non-context method as documented.</p>
<p>Fixed bogus '+' in <code>get_contexts</code> method in the mysql
storage.</p>
<h3>World Class changes</h3>
<p><code>librdf_world_get_feature</code> now returns a
<code>librdf_node*</code>, <code>librdf_world_set_feature</code>
takes a <code>librdf_node*</code> value. Export these to
the language bindings.
</p>
<h2 id="rel0_9_18"><a name="rel0_9_18">Redland 0.9.18 Changes</a></h2>
<p>Revert the statement class usage counting - it broke things.</p>
<h2 id="rel0_9_17"><a name="rel0_9_17">Redland 0.9.17 Changes</a></h2>
<p>This is Redland 1.0 Release Candidate 1.</p>
<p>The main changes in this release are the addition of the
<a href="docs/api/query.html">Query</a> and
<a href="docs/api/query_results.html">Query Results</a> classes, and
the removal of the language bindings into the new
<a href="http://librdf.org/bindings/">Redland Bindings</a>
package.
</p>
<p>The interface between the Redland library and Redland Bindings
when done via <a href="http://www.swig.org/">swig</a> is by the
swig interface file <code>Redland.i</code> which is now installed in
<code>/usr/share/redland/Redland.i</code>.</p>
<h3>Portability changes</h3>
<p>Several patches for building Redland natively on Win32
were provided by Jose Kahan. These included
adding an <code>win32_rdf_config.h</code> hard-coded config
for Win32, using that in the all the C source files and adding an
<code>REDLAND_STATIC</code> define to help statically linking Win32
builds of Redland.
</p>
<h3>Configuration changes</h3>
<p>Redland 0.9.17 requires Raptor 1.3.2 and Rasqal 0.9.1. Installed
versions are used if available by default, otherwise the copies in
the source tree will be used. The
<code>--with-raptor=</code> and
<code>--with-rasqal=</code> configure options with
values <code>internal</code> or <code>system</code> can be
used to select when both are available.
</p>
<p>Removed all the language binding-specific configuration code
including options such as <code>--with-perl</code> that are now used
by Redland Bindings.</p>
<h3>Packaging changes</h3>
<p>Updated the RPM spec file to remove building of the redland-perl
and redland-python RPMs which are now made in the redland-bindings
package.</p>
<p>Added <code>-lrdf</code> to the pkgconfig redland.pc file (Curtis Hovey)</p>
<p>Redland requires automake 1.7 and autoconf 2.54 to build from CVS.</p>
<h3>Query and Query Result Classes</h3>
<p>The <a href="docs/api/query.html">Query</a>
(<code>librdf_query</code>) and
<a href="docs/api/query_results.html">Query Results</a>
(<code>librdf_query_results</code>) classes are new in Redland 0.9.17.
They provide RDF query support with
<a href="http://www.w3.org/Submission/2004/SUBM-RDQL-20040109/">RDQL</a>
using <a href="http://librdf.org/rasqal/">Rasqal</a>
0.9.1, which is now included in the Redland distribution.</p>
<p>The Query class has the following functions and methods:</p>
<ul>
<li><code>librdf_new_query</code> (constructor)</li>
<li><code>librdf_new_query_from_query</code> (constructor)</li>
<li><code>librdf_new_query_from_factory</code> (factory constructor)</li>
<li><code>librdf_free_query</code> (destructor)</li>
<li><code>librdf_query_execute</code></li>
</ul>
<p>The Query Results class has the following methods:</p>
<ul>
<li><code>librdf_query_results_as_stream</code></li>
<li><code>librdf_query_results_get_count</code></li>
<li><code>librdf_query_results_next</code></li>
<li><code>librdf_query_results_finished</code></li>
<li><code>librdf_query_results_get_bindings</code></li>
<li><code>librdf_query_results_get_binding_value</code></li>
<li><code>librdf_query_results_get_binding_name</code></li>
<li><code>librdf_query_results_get_binding_value_by_name</code></li>
<li><code>librdf_query_results_get_bindings_count</code></li>
<li><code>librdf_free_query_results</code> (destructor)</li>
</ul>
<p>A new example example5.c was created to demonstrate using the
query classes.</p>
<h3>New Logging API</h3>
<p>An enhanced logging API was added to provide enhanced information
from log messages, error and warnings such as from parsing. The new
world method <code>librdf_world_set_logger</code> allows setting of
the log handler callback which gives a
<code>librdf_log_message</code>. Parts of this the structure can be
read by using the following new accessors methods:
</p>
<ul>
<li><code>librdf_log_message_code</code></li>
<li><code>librdf_log_message_level</code></li>
<li><code>librdf_log_message_facility</code></li>
<li><code>librdf_log_message_message</code></li>
<li><code>librdf_log_message_locator</code></li>
</ul>
<p>The locator returns an <code>raptor_locator</code> that gives the
line, column, byte offset, URI and/or filename of the message.
Raptor 1.3.2+ provides accessor methods for that structure
that are described in
<a href="http://librdf.org/raptor/libraptor.html">libraptor.3</a>.</p>
<h3>Model Class changes</h3>
<p>Check that duplicate statements are not added to models with the
<code>librdf_model_add_statement</code> and
<code>librdf_model_add_statements</code> methods. The methods for
adding statements with a context do not check.
</p>
<p>Added <code>librdf_model_query_execute</code> method to execute a
<code>librdf_query</code> against a model, returning an
<code>librdf_query_results</code></p>
<p>Added <code>librdf_model_load</code> method that uses Raptor
parser guessing to load content from a URI into a model.</p>
<p>The contexts methods now give a run time warning if called when
the model does not support contexts or the are not enabled. The
methods affected are:</p>
<ul>
<li><code>librdf_model_context_add_statement</code></li>
<li><code>librdf_model_context_add_statements</code></li>
<li><code>librdf_model_context_as_stream</code></li>
<li><code>librdf_model_context_remove_statement</code></li>
<li><code>librdf_model_context_remove_statements</code></li>
<li><code>librdf_model_context_serialize</code></li>
<li><code>librdf_model_find_statements_in_context</code></li>
<li><code>librdf_model_get_contexts</code></li>
</ul>
<p>Fixed a memory leak
inside <code>librdf_model_find_statements_in_context</code>.
</p>
<h3>Node Class changes</h3>
<p>Fix assert bug in <code>librdf_node_get_blank_identifier</code>
that caused it to always fail.</p>
<p>A bug was fixed in <code>librdf_node_get_li_ordinal</code>
to not always fail, returning -1</p>
<h3>Parser Class changes</h3>
<p>Deprecated methods <code>librdf_parser_set_error</code> and
<code>librdf_parser_set_warning</code> which never worked. The
new logging API works correctly with this code.</p>
<h3>Storage Class changes</h3>
<p>Where possible, check that duplicate statements are not added to
stores with the <code>librdf_storage_add_statement</code> and
<code>librdf_storage_add_statements</code> methods. The methods for
adding statements with a context do not check.
</p>
<p>The "mysql" storage was updated by
<a href="http://purl.org/net/morten/">Morten Frederiksen</a>
to revise the schema and to add two new features,
controlled by new boolean storage options:</p>
<ol>
<li><code>bulk</code>: whether model/storage method add_statements
should be optimized, until a model/storage sync operation</li>
<li><code>merge</code>: whether to maintain a table with merged models</li>
</ol>
<p>Context methods will now give a run time warning if called and
contexts are not supported or enabled. The methods affected are:</p>
<ul>
<li><code>librdf_storage_context_add_statement</code></li>
<li><code>librdf_storage_context_remove_statement</code></li>
<li><code>librdf_storage_context_serialise</code></li>
<li><code>librdf_storage_get_contexts</code></li>
</ul>
<p>Fixed a memory leak
inside <code>librdf_storage_find_statements_in_context</code>.
</p>
<p>A bug was fixed in method
<code>librdf_storage_node_stream_to_node_create</code> to allow the
second node parameter to be NULL, so that methods
<code>librdf_storage_get_arcs_out</code> and
<code>librdf_storage_get_arcs_in</code> that can use it to work.</p>
<h2 id="rel0_9_16"><a name="rel0_9_16">Redland 0.9.16 Changes</a></h2>
<p>A small but important fix to make the installed C headers work
correctly again. The rdf_uri.h file had <code>#include
rdf_digest.h</code> which is an internal header and not installed.
This required removing two functions from the public API that
returned <code>librdf_digest*</code>, but neither of them could be
used since rdf_digest.h was not shipped.</p>
<p>Patched librdf.h and raptor.h to <code>#include stdio.h</code> so
that the empty program <code>#include &lt;redland.h&gt;</code>
<code>main() {}</code> now works (ditto for raptor). </p>
<h2 id="rel0_9_15"><a name="rel0_9_15">Redland 0.9.15 Changes</a></h2>
<p>This version of Redland updates to use
<a href="http://librdf.org/raptor/">Raptor</a>
1.2.0 (<a href="http://librdf.org/raptor/NEWS.html">raptor news</a>)
along with the new syntax
<a href="http://www.dajobe.org/2004/01/turtle/">Turtle Terse RDF Triple Language</a>.
</p>
<p>Three new storage modules were added:</p>
<ol>
<li><a href="http://www.mysql.com/">MySQL</a> store written by <a href="http://purl.org/net/morten/">Morten Frederiksen</a> supporting the entire storage API include full contexts support.</li>
<li><a href="http://triplestore.aktors.org/">AKT Triplestore</a> using MySQL inside 3store</li>
<li>File and URI-backed in-memory store - read/write file, read only URI.</li>
</ol>
<p>The details of these modules are explained in much greater detail
in the <a href="docs/storage.html">storage modules overview</a>
including the features that they support.
</p>
<p>The runtime is now compiled with assertions to check for illegal
use of NULL pointers in arguments, these will give warning messages
(which can be disabled with <code>--disable-assert-messages</code>).
The storage and model classes now track when open iterator and
streams are operating on them and will not release resources until
all the open iterators and streams are finished.
</p>
<h3>URI and Literal string type changes</h3>
<p>There are many changes are to properly use and return UTF-8
strings as <code>unsigned char*</code> for URIs (looking forward to
Internationalized Resource Identifiers, IRIs emerging) and for RDF
literal strings, plus other fixes to work better with C++ correcting
the use of <code>const</code>. Redland and Raptor now both compile
cleanly with g++ 3.2, 3.3 and all warnings enabled.</p>
<h3><code>rdfproc</code> RDF processor utility program changes</h3>
<p><a href="utils/rdfproc.html">rdfproc</a> was extensively updated
and it can now more easily work with any type of Redland store and
has better support for working with contexts. The detailed changes
are as follows:</p>
<ul>
<li>Added an -s TYPE option to specify a storage type</li>
<li>Added an -t option for giving storage options</li>
<li>Added an -p option to read the value of
storage option <code>password</code> from standard input, to prevent
exposing it as a parameter.</li>
<li>The default of creating a new store was
replaced; -n enables truncation or overwriting (the
<code>write=yes</code> storage option).</li>
<li> Now recognises <code>_:</code><em>abc</em> as blank node arguments.</li>
<li>Parsing now return counts of errors and warnings if possible.</li>
<li>The parse-stream command can take an optional context node</li>
<li>Added a contexts command, to list the contexts in a model.</li>
<li>Added support for environment variables RDFPROC_STORAGE_OPTIONS and
RDFPROC_STORAGE_TYPE to provide default storage options (-t) and type (-s)</li>
<li>Help message updated and correctly lists supported parsers</li>
</ul>
<h3>Configuration changes</h3>
<p>Redland 0.9.15 requires Raptor 1.2.0 either installed otherwise
the copy in the source tree will be installed.</p>
<p><code>--with-mysql=</code><em>CONFIG</em> added to point to the
mysql_config program for the MySQL backing store
</p>
<p><code>--with-threestore</code> added to enable the
AKT Triplestore
</p>
<p><code>--disable-assert</code> added to disable
compiling run-time assertions.
</p>
<p><code>--disable-assert-messages</code> added to disable
compiling run-time assertion messages.
</p>
<h3>Packaging changes</h3>
<p>A redland-python RPM package is now provided and the default RPM
packaging now provides the MySQL store, in addition to the in-memory
and BDB previously packaged. The new file and uri stores are also
available. The full list of store modules is described further in the
<a href="docs/storage.html">storage modules overview</a>.</p>
<h3>Model Class changes</h3>
<p>Methods
<code>librdf_model_add_string_literal_statement</code> and
<code>librdf_model_add_typed_literal_statement</code>
now take a <code>const unsigned char* string</code>.
Method
<code>librdf_model_query_string</code> now takes
a <code>const unsigned char* string</code> query.
</p>
<p>New methods were added
<code>librdf_model_find_statements_in_context</code>
to search for a statement matching only in a particular context,
<code>librdf_model_find_statements_with_options</code> to
allow options with searching (none used at present),
and <code>librdf_model_get_contexts</code> to
list the context nodes in a graph.
</p>
<p>Methods <code>librdf_model_get_feature</code>,
<code>librdf_model_set_feature</code> were modified to take and return
<code>librdf_node*</code> values.
</p>
<h3>Node Class changes</h3>
<p>Constructors
<code>librdf_new_node_from_uri_string</code>,
<code>librdf_new_node_from_uri_local_name</code> and
<code>librdf_new_node_from_normalised_uri_string</code>
now take a <code>const unsigned char*
string</code> URI string.
Constructors
<code>librdf_new_node_from_literal</code> and
<code>librdf_new_node_from_typed_literal</code>
now take a <code>const unsigned char* string</code> RDF literal.
Constructor <code>librdf_new_node_from_blank_identifier</code>
now takes a <code>const unsigned char* string</code> blank node identifier.
</p>
<p>Methods
<code>librdf_node_get_literal_value</code>,
<code>librdf_node_get_literal_value_as_counted_string</code> and
<code>librdf_node_get_blank_identifier</code>
now return a <code>const unsigned char* string</code> RDF literal,
blank node identifier
</p>
<p>(Debugging methods <code>librdf_node_to_string</code> and
<code>librdf_node_to_counted_string</code>where changed to return a
<code>const unsigned char* string</code>)
</p>
<h3>Parser Class changes</h3>
<p>Added methods
<code>librdf_parser_parse_counted_string_as_stream</code> and
<code>librdf_parser_parse_counted_string_into_model</code>
for parsing a string with a given length rather than
a C NUL-terminated string.</p>
<p>Methods
<code>librdf_parser_parse_string_as_stream</code> and
<code>librdf_parser_parse_string_into_model</code>
now take a <code>const unsigned char* string</code> syntax buffer.
</p>
<p>Methods
<code>librdf_parser_get_feature</code>
and <code>librdf_parser_set_feature</code>
were modified to take and return <code>librdf_node*</code> values.
</p>
<h3>Query Class changes</h3>
<p>Constructor <code>librdf_new_query</code> now takes a <code>const
unsigned char* string</code> query.
</p>
<h3>Serializer Class changes</h3>
<p>Added methods <code>librdf_serializer_get_feature</code> and
<code>librdf_serializer_set_feature</code> taking and returning
<code>librdf_node*</code> values like the methods for the model and
parser classes.
</p>
<h3>Statement Class changes</h3>
<p>The statement objects are now usage counted like most other
objects so they are cheap to copy. No user-API level changes
are needed.</p>
<p>(Debugging method <code>librdf_statement_to_string</code> now
returns a <code>const unsigned char* string</code>)
</p>
<h3>URI Class changes</h3>
<p>Constructors
<code>librdf_new_uri</code>,
<code>librdf_new_uri_from_uri_local_name</code>,
<code>librdf_new_uri_normalised_to_base</code> and
<code>librdf_new_uri_relative_to_base</code>.
now take a <code>const unsigned char* string</code> URI string.
</p>
<p>Methods
<code>librdf_uri_as_string</code>,
<code>librdf_uri_as_counted_string</code>,
<code>librdf_uri_to_string</code> and
<code>librdf_uri_to_counted_string</code>
now return a <code>const unsigned char* string</code> URI string.
</p>
<h3>Java API Changes</h3>
<p>Updated to match API changes above. Fixes for OSX 10.3</p>
<h3>Perl API changes</h3>
<p>Updated to match API changes above. Fixes for perl 5.8.1 and
later which changed how <code>MakeMaker</code> installed. Let perl
install the files rather than try to force it based on the prefix
argument to configure. Make Parser method parse_string_into_model
call the correct Redland function. Added OSX Java directories
to JDK search path.</p>
<h3>PHP API Changes</h3>
<p>Updated to match API changes above. Redland is now started up and
shutdown once in the PHP module code and does not need to called
directly.</p>
<h3>Python API changes</h3>
<p>Updated to match API changes above. Fix Node literal_values
to work with datatype URIs. Export the NS class. Added
a FileStorage class for the storage type <code>file</code>.
Removed use of the python Distutils which was often
getting the linking wrong.
</p>
<h3>Ruby API changes</h3>
<p>Updated to match API changes above.</p>
<h3>Tcl API changes</h3>
<p>Updated to match API changes above.</p>
<h3>Other changes</h3>
<p>Redland now ships with both portable MD5 as well as (new in
0.9.15) SHA1 digest implementations used if neither is available via
an optimised library.</p>
<h2 id="rel0_9_14"><a name="rel0_9_14">Redland 0.9.14 Changes</a></h2>
<p>This version of Redland is an update mostly to synchronise
with the
<a href="http://librdf.org/raptor/">Raptor</a> version 1.0.0 (RDF/XML and N-Triples parser) - see
<a href="http://librdf.org/raptor/NEWS.html">Raptor NEWS</a>
for the changes since 0.9.12.</p>
<p>New in this version is the <a href="utils/rdfproc.html">rdfproc</a> utility
which allows command line creation of redland stores, parsing
of syntaxes and manipulation of the model.</p>
<h3>Configuration changes</h3>
<p>Added <code>--with-raptor</code> to either choose the system
or internal raptor library. If omittted, redland will guess
and choose either the system one, if new enough or the internal
one (always present).</p>
<h3>Hash Class changes</h3>
<p>Added a <code>librdf_hash_put_strings</code> helper method to put a pair of
string values into a hash. Useful for making model or storage
options.</p>
<h3>Node Class changes</h3>
<p>Resource (URI) / literal / blank nodes are now interned on
construction so there is only one object for each distinct
<code>librdf_node</code> object. This reduces memory and makes
copying cheaper at the cost of an increase in construction cost.
Copying nodes is very common, since not only is it done for nodes but
any time a statement is used or returned. This interning was already
done for the URI class but the change required
<code>librdf_node</code> to be made immutable, which was done in
0.9.13.</p>
<h3>Storage Class changes</h3>
<p>Added <code>librdf_storage_context_as_stream</code> deprecating
<code>librdf_storage_context_serialise</code> to be consistent with the
*as_stream method name changes to model.</p>
<p>Added <code>librdf_new_storage_with_options</code> taking an
<code>librdf_hash*</code>
of options rather than the string of <code>librdf_new_storage</code>.</p>
<p>Added new optional storage factory methods context_add_statements
and context_remove_statements. If omitted, the storage class
implements them with context_add_statement and context_remove_statement.</p>
<h3>Stream and Iterator Classes changes</h3>
<p>Optimised the stream and iterator internals to do less factory
method calls when looking for new items or the end of
stream/iterator. This should make them slightly faster.</p>
<h3>Miscellaneous changes</h3>
<p>Renamed Redland statics to be <code>librdf_*</code> rather than
<code>redland_*</code>. Added a one-line
librdf_short_copyright_string.</p>
<h3>Perl API Changes</h3>
<p>Fixed the broken use of <tt>UNIVERSAL::isa</tt></p>
<h2 id="rel0_9_13"><a name="rel0_9_13">Redland 0.9.13 Changes</a></h2>
<p>This version of Redland is a major update to 0.9.12 changing the
node class. <code>librdf_node</code> objects are now immutable once created,
higher-level language APIs no longer have deal with sharing or
copying internals, some additional API support for parsing content
from strings.</p>
<p>This includes the stable and complete version 0.9.12 of the
<a href="http://librdf.org/raptor/">Raptor parser</a>
which supports all of the revised RDF/XML syntax.</p>
<p>Initial work was added on an ECMA CLI interface using
the C# ("C sharp") language.</p>
<p>Blank nodes generated by parsing the syntaxes are now
generated more unique (not guaranteed) based on the Redland
startup time and a serial number.</p>
<p>The Perl, Python and Java APIs now always return new nodes
and statements removing the need to consider sharing at this
level. This means that the following operation is legal in
Perl, Python and Java:</p>
<pre>
# perl
$n=RDF::Redland::Node->from_uri("http://example.org/foo");
$s=new RDF::Redland::Statement($n, $n, $n);
$model->add($s);
# python
n=RDF.Uri("http://example.org/foo")
s=RDF.Statement(n, n, n) # n is used as a resource RDF.Node here
model.add_statement(s)
</pre>
<h3>Configuration</h3>
<p>Several improvements were made to the building and configuring
including a better attempt to find matching Sleepycat/Berkeley DB
header and library files (and support BDB up to 4.1), searching for
installed Java JDKs and Tcl headers. Each of the language interfaces
can be individually enabled to be build, tested and installed with
the main C library.</p>
<h3>Node Class changes</h3>
<p>The <code>librdf_node</code> class was modifed to make objects
immutable once constructed, they cannot be modified. The following
set methods were consequently removed.</p>
<ul>
<li><code>librdf_node_set_blank_identifier</code></li>
<li><code>librdf_node_set_li_ordinal</code></li>
<li><code>librdf_node_set_literal_value</code></li>
<li><code>librdf_node_set_type</code></li>
<li><code>librdf_node_set_typed_literal_value</code></li>
<li><code>librdf_node_set_uri</code></li>
</ul>
<p>The following utility methods were added (covering
all the <code>librdf_node_get_type</code> values):</p>
<ul>
<li><code>librdf_node_is_blank</code> - return non-0 if the node is a blank node</li>
<li><code>librdf_node_is_literal</code> - return non-0 if the node is a literal</li>
<li><code>librdf_node_is_resource</code> - return non-0 if the node is a URI</li>
</ul>
<p>(These are reflected into the same methods on
the Perl, Python and Java node classes)</p>
<p><code>LIBRDF_NODE_TYPE_LI</code> as returned by <code>librdf_node_get_type</code>
was deleted, it was never used.</p>
<p>To support datatyped literals, the following method was added:</p>
<ul>
<li>librdf_node_get_literal_value_datatype_uri - get the typed literal datatype URI of the literal node</li>
</ul>
<h3>Model Class changes</h3>
<p>Added <code>ibrdf_model_sync</code> to sync the model to the backing store.</p>
<p>Added <code>librdf_model_as_stream</code> and
<code>librdf_model_context_as_stream</code> to replace
<code>librdf_model_context_serialise</code> and
<code>librdf_model_context_serialize</code> respectively. This was
done both to reduce the confusion with the
<code>librdf_serializer</code> class and the mixture of US/UK
spelling of that word. The old functions will remain for now.
</p>
<h3>Parser Class changes</h3>
<p>Added <code>librdf_parser_parse_string_as_stream</code> and
<code>librdf_parser_parse_string_into_model</code> to allow parsing
content from strings.</p>
<h3>Statement Class changes</h3>
<p>Added <code>librdf_statement_is_complete</code> to test if a
statement has all the subject, predicate and object fields assigned.
Partial statements cannot be added to a model but can be used in
matching statement queries with
<code>librdf_model_find_statements</code>.</p>
<h3>Storage Class changes</h3>
<p>Added <code>librdf_storage_sync</code> to sync the backing store.
(This is slightly internal to Redland, you should not be calling this
directly)</p>
<h3>Perl Interface Changes</h3>
<p>Updated to make the object constructors less verbose and to allow
Redland URI objects and native perl URIs to be used in place of
Redland Nodes where convienent (such as in making Statements). All
existing code should work but can be shortened.
A new <code>--with-perl</code> configure argument to enable the perl
interface.
</p>
<h3>Python API changes</h3>
<p>A major update to use Python 2.2+ idioms and features by Edd
Dumbill with help from Matt Biddulph for unit tests. A new
<code>--with-python</code> configure argument to enable the python
interface. Edd wrote the following change log.</p>
<p>General changes</p>
<ul>
<li>Removed string exceptions and replaced with RedlandError ones</li>
<li>Where underlying Redland C objects were unexpectedly null, raise
exceptions rather than returning None, "" or [] as appropriate.</li>
<li>Raise exceptions if Redland C constructors fail in Python
constructors.</li>
<li>Did quite a lot of documentation updating, where possible
demonstrating preferred Pythonic usages.</li>
<li>Added more unit tests to test changed functionality.</li>
</ul>
<h4>RDF.Node class</h4>
<ul>
<li>Constructor now accepts Uri to make a resource/property node, or
a string to make a string literal</li>
<li>Removed usage of node_type() in favour of is_resource(), is_blank()
etc methods.</li>
<li><strong>DEPRECATED</strong> get_blank_identifier() etc. methods in favour of
node.blank_identifier etc properties. Raise exception if properties
inconsistent with the node type are requested.</li>
</ul>
<h4>RDF.Statement class</h4>
<ul>
<li>No need to name subject, predicate, object in constructor any more.
Uris or string literals accepted in place of nodes in constructor
argument.</li>
<li>__getattr__ method deleted, using new-style property() for
subject, predicate, object</li>
</ul>
<h4>RDF.Model class</h4>
<ul>
<li>Deleted get_*_iterator methods</li>
<li>Renamed sources() to get_sources(), targets() to get_targets(),
arcs() to get_predicates(). Retained old method names as aliases.</li>
<li>Added get_sources_context(), get_targets_context(),
get_predicates_context() which return (node, context) tuples.</li>
<li>Amended get_source(), get_sources() etc methods so that Uri and
string literals were acceptable as shortcut types for nodes.</li>
<li>Added find_statements_context() which returns (statement, context)
tuples.</li>
<li>Renamed context_remove_statements() to
remove_statements_with_context(). Retained old method name as an
alias.</li>
<li>Added __delitem__ method so del[statement] and del[statement,
context] work.</li>
<li>Added append() method so append(statement) and append(statement,
context) work. Suggest that append() is used in preference to
add_statement() for Python idiomatic usage.</li>
<li><strong>DEPRECATED</strong> serialise() in favour of as_stream().</li>
<li>Added as_stream_context() to serialise (statement, context) tuples.</li>
<li>Exception raised if len() is attempted on model with a non-countable
storage.</li>
<li><strong>DEPRECATED</strong> Model.add(), Model.add_typed_literal_statement() usages:
now that constructing Statements is easier, it's incongruous to have
these in the model. Additionally it saves reproducing various bits
of error checking that properly belong in the Node() constructor.</li>
<li>Implemented __contains__() so "if statement in model" and
"if (statement, context) in model" work as expected using the more
efficient Redland C methods where possible.</li>
</ul>
<h4>RDF.Stream class</h4>
<ul>
<li><strong>DEPRECATED</strong> Stream.context_iter(). Use in preference the _context
variants of the appropriate Model methods. This leads to fewer
lines of code.</li>
</ul>
<h4>RDF.Uri class</h4>
<ul>
<li>Amended constructor so strings or Uri instances can be passed as
the first argument, without named parameters being required, and
the right thing still happen.</li>
</ul>
<h3>Java Interface Changes</h3>
<p>Additions for the new API calls as outlined above (such
as model/storage sync, parsing from strings etc.). New configure
argument <code>--with-jdk</code> to pick the JDK in order to
find the JNI headers. See the <a href="docs/java.html">java API</a>
page for details.</p>
<h3>PHP, Ruby and Tcl Interfaces Changes</h3>
<p>Updates in configuring and building these interfaces and new
<code>--with-php</code>, <code>--with-ruby</code> and <code>--with-tcl</code>
configure arguments. See the corresponding API pages and
installation documentation for details. Tcl now tries to guess the
includes directories.</p>
<h3>Internal changes and fixes</h3>
<ul>
<li>Added Sleepycat/BDB 4.0 and 4.1 support - the open API changed again</li>
<li>Split the <code>librdf_model</code> class into model interface
(<code>librdf_model</code>) and implementation class
(<code>librdf_model_storage</code>).</li>
<li>Removed the old and outdated repat RDF parser.</li>
<li>Removed the very old expat XML parser from the sources;
much newer or expat or libxml2 are very widespread.</li>
<li>Added simple thread support from patches by Seth Ladd with
configuration option <code>--with-threads</code> that locks key shared
classes to allow separate threads to work in the same memory
space. The current locked classes are URI and World.</li>
<li>Deleting statements in the in-memory store now works.</li>
<li>Getting the context of iterators returned from in-memory
sources, targets, arcs now works.</li>
</ul>
<h2 id="rel0_9_12"><a name="rel0_9_12">Redland 0.9.12 Changes</a></h2>
<p>This version of Redland is a major update to 0.9.11 incorporating
a much more improved, complete and stable version 0.9.7 of the
<a href="http://librdf.org/raptor/">Raptor parser</a>
and a significant new feature, contexts. The
high-level language APIs received some updates and the start of two
new languages APIs were added: <a href="docs/ruby.html">Ruby</a> and
<a href="docs/php.html">PHP</a>.</p>
<p>Several incompatible API changes were made in this release that
effect the C interface and all the higher level language APIs. These
were made to support contexts and to fix some inconsistencies in the
interface about object ownership.</p>
<p>The persistent storage format was changed to support RDF typed
literals and this requires an upgrade of any existing
Berkeley/Sleepycat DB stores created by Redland 0.9.11 or earlier. A
utility <em>redland-db-upgrade</em> is provided that will create an
updated store from an existing one.</p>
<p>A Perl script <a href="utils/update-api-0912.pl">utils/update-api-0912.pl</a>
can help automate the API changes as far as possible or warn about those
that cannot be automatically updated.</p>
<h3>New Feature - Contexts</h3>
<p>This feature allows a Node to be given whenever a statement is
added to a model which can can be retrieved from any model query that
returns answers as an Iterator of Nodes or a Stream of Statements.
Both of these classes gained a new method <code>get_context</code>
that returns the original Node that was given when the statement
corresponding to the answer was added to the model.</p>
<p>The context node can also be used to add and remove sets of
statements to/from a model, and each statement with a given
context node can be listed as a stream of statements.</p>
<p>Adding this feature required substantial internal changes to these
two classes and the internal storage apis and implementations along
with moderate code changes at the application level, which are
described below.</p>
<p>This feature can be used for the following (not an exhaustive list):</p>
<ul>
<li>Enable true graph merging / updating / demerging - identify the
subgraphs with context nodes.</li>
<li>Statement Identity - add each statement with a different context node</li>
<li>Statement Provenance - use the context node as the subject of
other statements about the statement that is returned.</li>
</ul>
<h3>Iterator Class Changes</h3>
<p>The <a href="docs/api/iterator.html">Iterator</a>
<code>get_next</code> method was split into <code>get_object</code>
always returning a pointer to a shared object and the
<code>next</code> method to advance the iterator.
The <code>get_object</code> method is generally called
<code>current</code> in the higher level language APIs.</p>
<p>(Iterator and Stream now have consistent method names; they
may be merged in future.)</p>
<p>The <code>get_object</code> method now always returns a pointer to
a shared object. If this object is needed outside the scope of an
iteration, it must be copied, which for Nodes is the copy constructor
<code>librdf_new_node_from_node</code>.</p>
<p>C example for Redland 0.9.11 and earlier:</p>
<pre>
while(!librdf_iterator_end(iterator)) {
node=(librdf_node*)librdf_iterator_get_next(iterator);
/* do something with the node */
}
</pre>
<p>Redland 0.9.12:</p>
<pre>
while(!librdf_iterator_end(iterator)) {
node=(librdf_node*)librdf_iterator_get_object(iterator);
/* do something with the node */
librdf_iterator_next(iterator);
}
</pre>
<p>A new method <code>get_context</code> was added returning a Node
for the context of the original Statement that generated the Iterator
Node.</p>
<p>C Iterator context example:</p>
<pre>
while(!librdf_iterator_end(iterator)) {
node=(librdf_node*)librdf_iterator_get_object(iterator);
context_node=(librdf_node*)librdf_iterator_get_context(iterator);
/* do something with the node and its context */
librdf_iterator_next(iterator);
}
</pre>
<h3>Model Class Changes</h3>
<p>The <a href="docs/api/model.html">Model</a>
<code>add_statement</code> method no longer takes ownership of the
passed in statement object. The caller now retains ownership and can
reuse the statement several times and has responsibility for freeing it
if need be (when it isn't shared).</p>
<p>C example for Redland 0.9.11 and earlier:</p>
<pre>
librdf_model_add_statement(model, statement);
</pre>
<p>Redland 0.9.12:</p>
<pre>
librdf_model_add_statement(model, statement);
librdf_free_statement(statement);
</pre>
<p>C streaming statement example for Redland 0.9.11 and earlier:</p>
<pre>
while(!librdf_stream_end(stream)) {
librdf_statement *statement=librdf_stream_next(stream);
/* This statement is new, so could be added directly */
librdf_model_add_statement(model, statement);
}
</pre>
<p>Redland 0.9.12:</p>
<pre>
while(!librdf_stream_end(stream)) {
librdf_statement *statement=librdf_stream_get_object(stream);
/* This statement is now shared so can still be just added */
librdf_model_add_statement(model, statement);
}
</pre>
<p><code>librdf_model_add_string_literal_statement</code> lost the
xml_space argument.</p>
<p>A new method was added to add a Statement with
an RDF datatyped literals object:</p>
<pre>
int librdf_model_add_typed_literal_statement(librdf_model* model,
librdf_node* subject,
librdf_node* predicate,
char* string, char *xml_language, librdf_uri *datatype_uri);
</pre>
<p>This should be used in preference to
<code>librdf_model_add_string_literal_statement</code> which remains
in the API as a wrapper around the above.</p>
<p>New methods were added to add, remove and list Statements to contexts.</p>
<pre>
/* Add a single statement to the model with context */
int librdf_model_context_add_statement(librdf_model* model,
librdf_node* context, librdf_statement* statement);
/* Add all statements on the stream to the model with context */
int librdf_model_context_add_statements(librdf_model* model,
librdf_node* context, librdf_stream* stream);
/* Remove a single statement from the model with the given context */
int librdf_model_context_remove_statement(librdf_model* model,
librdf_node* context, librdf_statement* statement);
/* Remove all statements from the model with given context */
int librdf_model_context_remove_statements(librdf_model* model,
librdf_node* context);
/* List all statements in the model with the given context */
librdf_stream* librdf_model_context_serialize(librdf_model* model,
librdf_node* context);
</pre>
<h3>Node Class Changes</h3>
<p>The <a href="docs/api/node.html">Node</a> class gained a new constructor:</p>
<pre>
librdf_node* librdf_new_node_from_typed_literal(
librdf_world *world,
const char *string,
const char *xml_language,
librdf_uri* datatype_uri);
</pre>
<p>that should be used in preference to
<code>librdf_new_node_from_literal</code> which remains in the API as
a wrapper around the above. </p>
<p><code>librdf_node_new_nodefrom_literal</code> lost the
xml_space argument.</p>
<h3>Parser Class Changes</h3>
<p>The <a href="docs/api/parser.html">Parser</a> class has an updated
<a href="http://librdf.org/raptor/">Raptor parser</a>
version 0.9.7 - parsers named <code>raptor</code> for RDF/XML
(MIME Type <code>application/rdf+xml</code>)
and <code>ntriples</code> for N-Triples. See the
<a href="http://librdf.org/raptor/NEWS.html">Raptor NEWS</a>
for the detailed changes since 0.9.5 in the last release of Redland.</p>
<p>The Java SiRPAC parsers <code>sirpac-stanford</code>,
<code>sirpac-w3c</code> and the W3C LibWWW parser <code>libwww</code>
have been removed. Raptor replaces them.</p>
<h3>Serializer Class Changes</h3>
<p>The <a href="docs/api/serializer.html">Serializer</a> class
gained a new method:</p>
<pre>
int librdf_serializer_serialize_model_to_file(
librdf_serializer* serializer,
const char *name,
librdf_uri* base_uri,
librdf_model* model);
</pre>
<p>This writes the serialized model to a filename
(rather than a file handle as done by
<code>librdf_serializer_serialize_model</code>)
which is easier to use from higher level language APIs until a
cross-language I/O abstraction is available.</p>
<p>The class gained an RDF/XML serializer that can be called
either by the name <code>rdfxml</code> or the
MIME Type <code>application/rdf+xml</code>. The
examples in each language have been updated to demonstrate
using this.</p>
<h3>Storage Class Changes</h3>
<p>The built in storage factories (<code>memory</code>,
<code>hashes</code>) now both support contexts. These are enabled by
adding the storage option <code>contexts='yes'</code> to the options
string. The hashes storage additionally supports indexing predicates
as an extra hash which can be enabled with <code>index-predicates='yes'</code>.
This makes triple queries of the form
(subject unknown, predicate known, object unknown) fast.
</p>
<p>C Example of creating a 0.9.12 storage that does contexts using
on-disk Berkeley/Sleepycat DB:</p>
<pre>
storage=librdf_new_storage(world,
"hashes",
name,
"hash-type='bdb',write='yes',new='yes',contexts='yes'");
</pre>
<h3>Stream Class Changes</h3>
<p>The <a href="docs/api/stream.html">Stream</a>
<code>next</code> method was split into <code>get_object</code>
always returning a pointer to a shared Statement and the
<code>next</code> method to advance the iterator.
The <code>get_object</code> method is generally called
<code>current</code> in the higher level language APIs.</p>
<p>(Iterator and Stream now have consistent method names; they
may be merged in future.)</p>
<p>C example for Redland 0.9.11 and earlier:</p>
<pre>
while(!librdf_stream_end(stream)) {
statement=(librdf_statement*)librdf_stream_next(stream);
/* do something with the statement */
}
</pre>
<p>Redland 0.9.12:</p>
<pre>
while(!librdf_stream_end(stream)) {
statement=(librdf_statement*)librdf_stream_get_object(stream);
/* do something with the statement */
librdf_stream_next(stream);
}
</pre>
<p>A new method <code>get_context</code> was added returning a Node
for the context of the Statement.</p>
<p>C Stream context example:</p>
<pre>
while(!librdf_stream_end(stream)) {
statement=(librdf_statement*)librdf_stream_get_object(stream);
context_node=(librdf_node*)librdf_stream_get_context(iterator);
/* do something with the statement and its context node */
librdf_stream_next(stream);
}
</pre>
<h3>Perl Interface Changes</h3>
<p>The <a href="docs/perl.html">Perl</a> interface
moved to the <code>RDF::Redland</code> package (the <code>RDF</code>
namespace was deprecated in 0.9.11).</p>
<p>The interface was updated to receive Redland error and warning
messages callbacks. These can be set using the
<code>RDF::Redland::set_error_handler</code>
and <code>RDF::Redland::set_warning_handler</code> subroutines
taking a subroutine argument. They are called with a single
scalar argument which is the Redland message.</p>
<p>The interface was updated to match the Interator and Stream
changes described above.</p>
<p>Perl iterator example for Redland 0.9.11 and earlier:</p>
<pre>
while(!$iterator->end) {
my $node=$iterator->next;
# do something with the node
}
</pre>
<p>Redland 0.9.12:</p>
<pre>
while(!$iterator->end) {
my $node=$iterator->current;
# do something with the node
$iterator->next;
}
</pre>
<p>Perl stream example for Redland 0.9.11 and earlier:</p>
<pre>
while(!$stream->end) {
my $statement=$stream->next;
# do something with the statement
}
</pre>
<p>Redland 0.9.12:</p>
<pre>
while(!$stream->end) {
my $statement=$stream->current;
# do something with the statement
$stream->next;
}
</pre>
<p>Perl example of using the Serializer class:</p>
<pre>
# Use any rdf/xml parser that is available
my $serializer=new RDF::Redland::Serializer("rdfxml");
$serializer->serialize_model_to_file("output.rdf", $uri, $model);
</pre>
<h3>Python API Changes</h3>
<p>The <a href="docs/python.html">Python</a> interface
gained pydoc comments, along with an
<a href="docs/pydoc/RDF.html">HTML derived version</a>.
</p>
<p>The interface was updated to receive Redland error and warning
messages callbacks as python exceptions. These can be caught
using the standard python try {} catch {} blocks.</p>
<p>The interface was updated to match the Interator and Stream
changes described above.</p>
<p>Python iterator example for Redland 0.9.11 and earlier:</p>
<pre>
while not iterator.end():
node=iterator.next()
# do something with the node
</pre>
<p>Redland 0.9.12:</p>
<pre>
while not iterator.end():
node=iterator.current()
# do something with the node
iterator.next()
</pre>
<p>Python stream example for Redland 0.9.11 and earlier:</p>
<pre>
while not stream.end():
statement=stream.next()
# do something with the statement
</pre>
<p>Redland 0.9.12:</p>
<pre>
while not stream.end():
statement=stream.current()
# do something with the statement
stream.next()
</pre>
<p>Python example of using the Serializer class:</p>
<pre>
# Use any rdf/xml parser that is available
serializer=RDF.Serializer()
serializer.serialize_model_to_file("output.rdf", model)
</pre>
<h3>Java Interface Changes</h3>
<p>The <a href="docs/java.html">Java</a> classes were updated to have
a <code>finished()</code> method that the user can call to cleanup
objects replacing the rather useless Java <code>finalize()</code>
method that gives no guarantees to when it is called.</p>
<p>The Java API is still experimental and may change further.</p>
<h2 id="rel_older"><a name="rel_older">Redland 0.9.1 - Redland 0.9.11 Changes</a></h2>
<p>Release notes for 0.9.11 and earlier are in the
<a href="NEWS.html">NEWS page</a> or
<a href="ChangeLog">ChangeLog</a>
</p>
<hr />
<p>Copyright (C) 2000-2008 <a href="http://www.dajobe.org/">Dave Beckett</a><br />Copyright (C) 2000-2005 <a href="http://www.bristol.ac.uk/">University of Bristol</a></p>
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