<table><tr><td style="">dvratil added inline comments.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D29602">View Revision</a></tr></table><br /><div><strong>INLINE COMMENTS</strong><div><div style="margin: 6px 0 12px 0;"><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D29602#inline-169987">View Inline</a><span style="color: #4b4d51; font-weight: bold;">storagemodel.cpp:262</span></div>
<div style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; white-space: pre-wrap; clear: both; padding: 4px 0; margin: 0;"><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);"> <span class="n">collection</span> <span style="color: #aa2211">=</span> <span class="n">collection</span><span class="p">.</span><span class="n">parentCollection</span><span class="p">();</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);"> <span class="p">}</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);"> <span class="n">mi</span><span style="color: #aa2211">-></span><span class="n">setFolder</span><span class="p">(</span><span class="n">folder</span><span class="p">);</span>
</div></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">I would trim the trailing '/' from the folder path here, so that it looks like "Local Folders/Inbox" rather than "Local Folders/Inbox/"</p></div></div><br /><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D29602#inline-169976">View Inline</a><span style="color: #4b4d51; font-weight: bold;">gordin</span> wrote in <span style="color: #4b4d51; font-weight: bold;">storagemodel.cpp:263</span></div>
<div style="margin: 8px 0; padding: 0 12px; color: #74777D;"><p style="padding: 0; margin: 8px;">What do you mean by "selected folder"? I thought the collection ID is globally unique? Why can it not be re-used independent from any selection?</p></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">Collection ID is globally unique, this is about saving resources. Note that you are touching some very very performance and memory-sensitive parts of code here.</p>
<p style="padding: 0; margin: 8px;">If you open a virtual search folder, each item can be from a different folder, so you will populate the hashtable with many mappings. However, when you then switch to a regular folder, you only need a single mapping, because all Items there belong to a single collection. Without clearing the hashtable on folder switch, you would be</p>
<ol class="remarkup-list">
<li class="remarkup-list-item">keeping unused mappings allocated and using memory</li>
<li class="remarkup-list-item">forcing the lookup code to look up through all the irrelevant mappings just to find that one for the current folder - doing that for each Item</li>
</ol>
<p style="padding: 0; margin: 8px;">Since majority of usecases is browsing regular folders, where there will be only single mapping, you should optimize for that.</p></div></div><br /><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D29602#inline-169977">View Inline</a><span style="color: #4b4d51; font-weight: bold;">gordin</span> wrote in <span style="color: #4b4d51; font-weight: bold;">storagemodel.cpp:506</span></div>
<div style="margin: 8px 0; padding: 0 12px; color: #74777D;"><p style="padding: 0; margin: 8px;">Actually, this does not work. Neither passing "d->mChildrenFilterModel" nor "static_cast<QAbstractProxyModel *>(d->mChildrenFilterModel)" will produce a result, "idx" is invalid.</p></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">Interesting, but very well, then.</p></div></div></div></div></div><br /><div><strong>REPOSITORY</strong><div><div>R94 PIM: Message Library</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D29602">https://phabricator.kde.org/D29602</a></div></div><br /><div><strong>To: </strong>gordin, VDG, dvratil<br /><strong>Cc: </strong>dvratil, kde-pim, jamesth, fbampaloukas, dvasin, hrouis, rodsevich, ach, winterz, vkrause, mlaurent, knauss<br /></div>