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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">Redundant? Not really: to get the cell value from an item, one needs a pointer to the column. Since the existing machinery already computes the value, we just pass it along
with (what is missing now) a pointer to the item. I think it's more "convenient", and one could possibly reuse the sort policy for multiple columns.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">I don't know whether the column pointer needs to be passed - probably not, but perhaps I don't see scenarios where it might be needed, and it makes the policy more complicated
since we now have to have separate policies for TableView and TreeTableView.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">Example:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">public interface SortPolicy<ITEM,VALUE> {</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> public int compare(Tree/TableColumn column, ITEM itemA, VALUE valueA, ITEM itemB, VALUE valueB);</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">}</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">What do everyone think?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">-andy<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">openjfx-dev <openjfx-dev-retn@openjdk.org> on behalf of PavelTurk <pavelturk2000@gmail.com><br>
<b>Date: </b>Monday, May 19, 2025 at 17:21<br>
<b>To: </b>openjfx-dev@openjdk.org <openjfx-dev@openjdk.org><br>
<b>Subject: </b>Re: Let's discuss JDK-8338952<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:12.0pt">Andy, I think this is a good solution because it provides everything needed for sorting.<br>
Moreover, it complies with the generics of TableColumn. <br>
<br>
For example, <br>
<br>
var column = new TableColumn<Person, String>("First Name");<br>
SortPolicy<Person, String> sortPolicy = ...<br>
column.setSortPolicy(sortPolicy);<br>
<br>
But don't you think the VALUE parameters are redundant since they can be obtained directly from ITEM?<br>
<br>
Best regards, Pavel<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">On 5/19/25 22:28, Andy Goryachev wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">One possible solution would be to deprecate the comparator property (not for removal, keep it for backward compatibility), and add a new property 'sortPolicy' which will use
an interface that can be evolved, as opposed to a naive callback.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">public interface SortPolicy<ITEM,VALUE> {</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> public int compare(ITEM itemA, VALUE valueA, ITEM itemB, VALUE valueB);</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">}</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">when set, the new property will override the comparator property.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">What do you think?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">-andy</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed SS16""> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">openjfx-dev <a href="mailto:openjfx-dev-retn@openjdk.org">
<openjfx-dev-retn@openjdk.org></a> on behalf of PavelTurk <a href="mailto:pavelturk2000@gmail.com">
<pavelturk2000@gmail.com></a><br>
<b>Date: </b>Monday, May 19, 2025 at 00:59<br>
<b>To: </b><a href="mailto:openjfx-dev@openjdk.org">openjfx-dev@openjdk.org</a> <a href="mailto:openjfx-dev@openjdk.org">
<openjfx-dev@openjdk.org></a><br>
<b>Subject: </b>Let's discuss JDK-8338952</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">About six months ago, I opened JDK-8338952 with a proposal to add an item comparator to (Tree)TableView.<br>
<br>
The reason for this issue is that when using non-standard sorting — for example, when there is a "Total"<br>
row in the table — the standard API becomes insufficient. One has to reinvent the wheel, and the code<br>
quickly becomes extremely messy. Given that tables are one of the core UI components, this becomes<br>
a serious problem.<br>
<br>
To address this, I proposed adding an item comparator, which I believe would be very simple to implement.<br>
I suggest we at least discuss this issue so we can start moving toward a solution.<br>
<br>
Best regards, Pavel</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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