[Sqlalchemy-commits] [1468] sqlalchemy/branches/schema/doc/build/content/plugins.txt: edits
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[Sqlalchemy-commits] [1468] sqlalchemy/branches/schema/doc/build/content/plugins.txt: edits
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From: <co...@sq...> - 2006-05-17 01:16:24
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head><style type="text/css"><!-- #msg dl { border: 1px #006 solid; background: #369; padding: 6px; color: #fff; } #msg dt { float: left; width: 6em; font-weight: bold; } #msg dt:after { content:':';} #msg dl, #msg dt, #msg ul, #msg li { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt; } #msg dl a { font-weight: bold} #msg dl a:link { color:#fc3; } #msg dl a:active { color:#ff0; } #msg dl a:visited { color:#cc6; } h3 { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt; font-weight: bold; } #msg pre { overflow: auto; background: #ffc; border: 1px #fc0 solid; padding: 6px; } #msg ul, pre { overflow: auto; } #patch { width: 100%; } #patch h4 {font-family: verdana,arial,helvetica,sans-serif;font-size:10pt;padding:8px;background:#369;color:#fff;margin:0;} #patch .propset h4, #patch .binary h4 {margin:0;} #patch pre {padding:0;line-height:1.2em;margin:0;} #patch .diff {width:100%;background:#eee;padding: 0 0 10px 0;overflow:auto;} #patch .propset .diff, #patch .binary .diff {padding:10px 0;} #patch span {display:block;padding:0 10px;} #patch .modfile, #patch .addfile, #patch .delfile, #patch .propset, #patch .binary, #patch .copfile {border:1px solid #ccc;margin:10px 0;} #patch ins {background:#dfd;text-decoration:none;display:block;padding:0 10px;} #patch del {background:#fdd;text-decoration:none;display:block;padding:0 10px;} #patch .lines, .info {color:#888;background:#fff;} --></style> <title>[1468] sqlalchemy/branches/schema/doc/build/content/plugins.txt: edits</title> </head> <body> <div id="msg"> <dl> <dt>Revision</dt> <dd>1468</dd> <dt>Author</dt> <dd>zzzeek</dd> <dt>Date</dt> <dd>2006-05-16 20:16:16 -0500 (Tue, 16 May 2006)</dd> </dl> <h3>Log Message</h3> <pre>edits</pre> <h3>Modified Paths</h3> <ul> <li><a href="#sqlalchemybranchesschemadocbuildcontentpluginstxt">sqlalchemy/branches/schema/doc/build/content/plugins.txt</a></li> </ul> </div> <div id="patch"> <h3>Diff</h3> <a id="sqlalchemybranchesschemadocbuildcontentpluginstxt"></a> <div class="modfile"><h4>Modified: sqlalchemy/branches/schema/doc/build/content/plugins.txt (1467 => 1468)</h4> <pre class="diff"><span> <span class="info">--- sqlalchemy/branches/schema/doc/build/content/plugins.txt 2006-05-17 01:09:24 UTC (rev 1467) +++ sqlalchemy/branches/schema/doc/build/content/plugins.txt 2006-05-17 01:16:16 UTC (rev 1468) </span><span class="lines">@@ -147,8 +147,13 @@ </span><span class="cx"> </span><span class="cx"> ### SelectResults </span><span class="cx"> </span><del>- {python} - res = SelectResults(mapper, table.c.column == "something") </del><ins>+SelectResults gives generator-like behavior to the results returned from the `select` and `select_by` method of `Query`. It supports three modes of operation; per-query, per-mapper, and per-application. + + {python title="SelectResults with a Query Object"} + from sqlalchemy.ext.selectresults import SelectResults + + query = session.query(MyClass) + res = SelectResults(query, table.c.column == "something") </ins><span class="cx"> res = res.order_by([table.c.column]) #add an order clause </span><span class="cx"> </span><span class="cx"> for x in res[:10]: # Fetch and print the top ten instances </span><span class="lines">@@ -160,6 +165,23 @@ </span><span class="cx"> # and column == "something" </span><span class="cx"> print res.filter(table.c.column2 > 42).count() </span><span class="cx"> </span><ins>+ +Per mapper: + + {python title="SelectResults with a Mapper Object"} + from sqlalchemy.ext.selectresults import SelectResultsExt + mapper(MyClass, mytable, extension=SelectResultsExt()) + session.query(MyClass).select(mytable.c.column=="something").order_by([mytable.c.column])[2:7] + +Or across an application via the `selectresults` mod: + + {python title="SelectResults via mod"} + import sqlalchemy.mods.selectresults + + mapper(MyClass, mytable) + session.query(MyClass).select(mytable.c.column=="something").order_by([mytable.c.column])[2:7] + + </ins><span class="cx"> ### LegacySession </span><span class="cx"> </span><span class="cx"> (this plugin probably doesnt even work right now) </span><span class="cx">\ No newline at end of file </span></span></pre> </div> </div> </body> </html> |
