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Storm (software)
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<h2 id="development">Development</h2> <p>Storm was developed at <a href="/facts/Canonical_Ltd./76WPw1uW">Canonical Ltd.</a> in <a href="/facts/Python_(programming_language)/YbuGqofa">Python</a> for use in the <a href="/facts/Launchpad_(website)/gx71wYj5">Launchpad</a> and <a href="/facts/Landscape_(software)/waC6r6Ex">Landscape</a> applications and subsequently released in 2007 as free software. The project is <a href="/facts/Free_software/IaoVtJXn">free software</a> and released under the <a href="/facts/GNU_Lesser_General_Public_License/AXwkz9x3">GNU Lesser General Public License</a> and contributors are required to assign copyrights to Canonical. Version control is done in <a href="/facts/Bazaar_(software)/TQ3AEzcS">bazaar</a> and issue tracking in Launchpad.<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> </p> <table><tbody><tr><th>Version</th><th>Release Date</th><th>Improvements<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a></th></tr><tr><td>Storm 0.21</td><td>TBD</td><td>In development as of 2013<a href="https://en.wikipedia.org/w/index.php?title=Storm_(software)&action=edit">[update]</a></td></tr><tr><td>Storm 0.20</td><td>28 Jun 2013</td><td><ul><li>A new CaptureTracer has been added to storm.testing.</li><li>Setuptools is now required to run setup.py. This makes it easier to install dependencies required to run the test suite.</li><li>PostgreSQL disconnection errors are now more reliably detected.</li><li>Insert expressions now support multi-row and subquery INSERT statements.</li><li>Support in the postgres backend to use the RETURNING extension for UPDATE, optionally specifying columns to return.</li><li>Add a Distinct expression for pre-pending 'DISTINCT' to SQL expressions.</li><li>Switch to REPEATABLE READ as isolation level for Postgres.</li><li>Add support for two-phase commits (PostgreSQL only).</li><li>ZStormResourceManager now has a schema_stamp_dir optional instance attribute, so schema upgrades will be performed only when needed.</li></ul></td></tr><tr><td>Storm 0.19</td><td>05 Oct 2011</td><td><ul><li>The storm.zope.testing.ZStormResourceManager supports using a custom URI.</li><li>ResultSet.config's "distinct" argument accepts a tuple of columns.</li><li>Provide wrapped cursor objects in Django integration layer.</li><li>Add a new JSON property, new ROW constructor, new Cast expressions, and two new tracers.</li><li>New storm.twisted.transact module added.</li></ul></td></tr><tr><td>Storm 0.18</td><td>25 Oct 2010</td><td><ul><li>Include code to manage and migrate database schemas.</li><li>Added a storm.zope.testing.ZStormResourceManager class to manage a set of stores registered.</li><li>When a TimeoutError is raised it includes a description about why the exception was raised.</li><li>Improved the IResultSet interface to document the rationale of why some attributes are not included.</li></ul></td></tr><tr><td>Storm 0.17</td><td>05 Aug 2010</td><td><ul><li>ResultSet and ReferenceSet are reworked and improved.</li><li>The Store and Connection classes have block_access() and unblock_access() methods.</li><li>ZStormError will be raised on attempts to use a per-thread store from the wrong thread.</li></ul></td></tr><tr><td>Storm 0.16</td><td>29 Nov 2009</td><td><ul><li>The set expression constructor will now flatten its first argument if it is of the same type.</li><li>Add startswith(), endswith() and contains_string() methods to Comparable.</li><li>C extensions are enabled by default.</li><li>'make doc' uses Pydoctor to generate API documentation.</li></ul></td></tr><tr><td>Storm 0.15</td><td>08 Aug 2009</td><td><ul><li>Add support for latest version on Django by not checking arguments passed to _cursor.</li><li>New GenerationalCache, UUID property type, Neg expression, and Coalese expressions were added.</li><li>Improved DisconnectionError reporting.</li><li>Results/ResultSets now expose more.</li></ul></td></tr><tr><td>Storm 0.14</td><td>09 Jan 2009</td><td><ul><li>A new storm.django package has been added.</li><li>The Store constructor takes an optional cache keyword argument,</li><li>ResultSets now offer an is_empty() method.</li></ul></td></tr><tr><td>Storm 0.13</td><td>28 Aug 2008</td><td><ul><li>Add group_by/having methods on ResultSet objects.</li><li>Change tests/store to keep the connection during the tests.</li><li>Implemented support for plugging generic "tracers".</li><li>Properties now accept a "validator" parameter.</li><li>Expressions can be passed to Store.find() as well as classes.</li><li>Objects are flushed in the order they become dirty.</li><li>ClassAlias caches all explicitly named aliases.</li><li>Result sets and reference sets now have a __contains__() method.</li></ul></td></tr><tr><td>Storm 0.12</td><td>28 Jan 2008</td><td><ul><li>The Connection will reconnect automatically when drops are detected.</li><li>Store.flush() will not load values inserted in the database</li><li>Support in the postgres backend to use the RETURNING extension.</li><li>Introduced a cache mechanism that keeps the N last retrieved objects in memory.</li><li>Improved support for TimeDelta properties on all backends.</li></ul></td></tr><tr><td>Storm 0.11</td><td>08 Oct 2007</td><td>Minor bug fixing release.</td></tr><tr><td>Storm 0.10</td><td>08 Aug 2007</td><td>Bug fixes, feature enhancements, documentation!</td></tr><tr><td>Storm 0.9</td><td>06 Jul 2007</td><td></td></tr></tbody></table> <h2 id="see-also">See also</h2> <ul> <li>Free and open-source software portal</li></ul> <ul><li><a href="/facts/TurboGears/6qyQBskU">TurboGears</a></li> <li><a href="/facts/SQLAlchemy/CFMvc0dj">SQLAlchemy</a></li> <li><a href="/facts/SQLObject/W71jpsCV">SQLObject</a></li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://storm.canonical.com/">Official website</a> </li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Storm codebase in bzr. http://bazaar.launchpad.net/~storm/storm/trunk/files/head:/storm/ Retrieved on 24 May 2012 <a href="http://bazaar.launchpad.net/~storm/storm/trunk/files/head:/storm/" target="_blank">http://bazaar.launchpad.net/~storm/storm/trunk/files/head:/storm/</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Canonical's contributor agreement http://www.canonical.com/contributors Retrieved 24 May 2012 <a href="http://www.canonical.com/contributors" target="_blank">http://www.canonical.com/contributors</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Storm Developers. "Launch Pad". https://launchpad.net/storm 2006-07-17. Retrieved on 24 May 2012 <a href="https://launchpad.net/storm" target="_blank">https://launchpad.net/storm</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> </ol>