<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 04:25:40 UTC 2024

It is possible to restrict the fields that are returned in this document by specifying the 'field' parameter in your request.
For example, to request only the issue key and summary append 'field=key&field=summary' to the URL of your request.
-->
<rss version="0.92" >
<channel>
    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
    </build-info>


<item>
            <title>[SERVER-30991] Introduce MatchExpression::optimize()</title>
                <link>https://jira.mongodb.org/browse/SERVER-30991</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This would allow arbitrary match expression nodes to optimize themselves, and for such optimizations to roll up through that node&apos;s ancestors. It could look similar to the existing &lt;tt&gt;Expression::optimize()&lt;/tt&gt; virtual method.&lt;/p&gt;</description>
                <environment></environment>
        <key id="424831">SERVER-30991</key>
            <summary>Introduce MatchExpression::optimize()</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="justin.seyster@mongodb.com">Justin Seyster</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Thu, 7 Sep 2017 17:50:13 +0000</created>
                <updated>Mon, 30 Oct 2023 23:13:46 +0000</updated>
                            <resolved>Fri, 29 Sep 2017 20:08:05 +0000</resolved>
                                                    <fixVersion>3.6.0-rc0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1685628" author="xgen-internal-githook" created="Fri, 29 Sep 2017 20:07:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;justin.seyster@mongodb.com&apos;, &apos;name&apos;: &apos;Justin Seyster&apos;, &apos;username&apos;: &apos;jseyster&apos;}
&lt;p&gt;Message: Reapply &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30991&quot; title=&quot;Introduce MatchExpression::optimize()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30991&quot;&gt;&lt;del&gt;SERVER-30991&lt;/del&gt;&lt;/a&gt; Introduce MatchExpression::optimize().&quot;&lt;/p&gt;

&lt;p&gt;This patch undoes the revert in&lt;br/&gt;
3cf4e0593c394dd7eb45d8000d76b5dc73a3f425 and includes minor changes to&lt;br/&gt;
fix the compiler problem that resulted in the previous revert.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b3bdd98e0d9cab6857590c174a81911a9a8205ac&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b3bdd98e0d9cab6857590c174a81911a9a8205ac&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1684857" author="xgen-internal-githook" created="Fri, 29 Sep 2017 01:55:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;justin.seyster@mongodb.com&apos;, &apos;name&apos;: &apos;Justin Seyster&apos;, &apos;username&apos;: &apos;jseyster&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30991&quot; title=&quot;Introduce MatchExpression::optimize()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30991&quot;&gt;&lt;del&gt;SERVER-30991&lt;/del&gt;&lt;/a&gt; Introduce MatchExpression::optimize().&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 3cf4e0593c394dd7eb45d8000d76b5dc73a3f425.&lt;/p&gt;

&lt;p&gt;Reverting because of a Clang compile error.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e3bb43cfa8ac0d04ba28ffd3b09a53785feabb31&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e3bb43cfa8ac0d04ba28ffd3b09a53785feabb31&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1684796" author="xgen-internal-githook" created="Thu, 28 Sep 2017 22:33:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;justin.seyster@mongodb.com&apos;, &apos;name&apos;: &apos;Justin Seyster&apos;, &apos;username&apos;: &apos;jseyster&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30991&quot; title=&quot;Introduce MatchExpression::optimize()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30991&quot;&gt;&lt;del&gt;SERVER-30991&lt;/del&gt;&lt;/a&gt; Introduce MatchExpression::optimize().&lt;/p&gt;

&lt;p&gt;This patch refactors CanonicalQuery::normalizeTree() so that the&lt;br/&gt;
normalization logic for each type of MatchExpression goes with the&lt;br/&gt;
class, rather than all the optimization rules getting bundled into one&lt;br/&gt;
huge else if chain.&lt;/p&gt;

&lt;p&gt;We wanted something along the lines of an optimize() member function&lt;br/&gt;
that would optimize &apos;this&apos; and return the optimized result (possibly&lt;br/&gt;
the same object). However, we also wanted unique_ptr semantics, so&lt;br/&gt;
that the optimize function creates a new tree that does not include&lt;br/&gt;
the original object, it autmotatically gets destroyed. There&apos;s no way&lt;br/&gt;
to specify a member function that accepts a unique_ptr &apos;this&apos; value.&lt;/p&gt;

&lt;p&gt;To get around that, we provide a getOptimizer() private function that&lt;br/&gt;
returns a function with the unique_ptr signature we want:&lt;br/&gt;
unique_ptr&amp;lt;MatchExpression&amp;gt; -&amp;gt; unique_ptr&amp;lt;MatchExpression&amp;gt;.&lt;/p&gt;

&lt;p&gt;This way, we still get to replace our if else chain with virtual&lt;br/&gt;
dispatch, and we can maintain unique_ptr semantics for the&lt;br/&gt;
MatchExpression tree.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3cf4e0593c394dd7eb45d8000d76b5dc73a3f425&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3cf4e0593c394dd7eb45d8000d76b5dc73a3f425&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="418096">SERVER-30751</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>3.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18555" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname># of Sprints</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2.0</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10011" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Backwards Compatibility</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10038"><![CDATA[Fully Compatible]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Mon, 18 Sep 2017 21:50:42 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        6 years, 19 weeks, 5 days ago
    
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18254" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Dependencies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue><![CDATA[]]></customfieldvalue>


                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_15850" key="com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary">
                        <customfieldname>Development</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                            <customfield id="customfield_10857" key="com.pyxis.greenhopper.jira:gh-epic-link">
                        <customfieldname>Epic Link</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>PM-738</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <customfield id="customfield_10057" key="com.atlassian.jira.toolkit:lastusercommented">
                        <customfieldname>Last comment by Customer</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>true</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_10056" key="com.atlassian.jira.toolkit:lastupdaterorcommenter">
                        <customfieldname>Last commenter</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>luke.bonanomi@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            6 years, 19 weeks, 5 days ago
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>david.storch@mongodb.com</customfieldvalue>
            <customfieldvalue>xgen-internal-githook</customfieldvalue>
            <customfieldvalue>justin.seyster@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|htedm7:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hra0wn:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10558" key="com.pyxis.greenhopper.jira:gh-global-rank">
                        <customfieldname>Rank (Obsolete)</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>9223372036854775807</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_23361" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Requested By</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_10557" key="com.pyxis.greenhopper.jira:gh-sprint">
                        <customfieldname>Sprint</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue id="1896">Query 2017-10-02</customfieldvalue>
    <customfieldvalue id="1924">Query 2017-10-23</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10053" key="com.atlassian.jira.ext.charting:timeinstatus">
                        <customfieldname>Time In Status</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_22870" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Triagers</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_14350" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>serverRank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|htdzpb:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                    </customfields>
    </item>
</channel>
</rss>