<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 05:00:27 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-42423] Use ProjectionExecutor in ProjectionStageDefault</title>
                <link>https://jira.mongodb.org/browse/SERVER-42423</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Plug in the new execution code to the find() command. This should remove most uses of ProjectionExec from the query system.&lt;/p&gt;</description>
                <environment></environment>
        <key id="875838">SERVER-42423</key>
            <summary>Use ProjectionExecutor in ProjectionStageDefault</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="anton.korshunov@mongodb.com">Anton Korshunov</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                    </labels>
                <created>Thu, 25 Jul 2019 18:02:53 +0000</created>
                <updated>Sun, 29 Oct 2023 22:18:44 +0000</updated>
                            <resolved>Fri, 11 Oct 2019 20:19:27 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="2478624" author="xgen-internal-githook" created="Fri, 11 Oct 2019 20:17:06 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;antkorsh&apos;, &apos;email&apos;: &apos;anton.korshunov@mongodb.com&apos;, &apos;name&apos;: &apos;Anton Korshunov&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42423&quot; title=&quot;Use ProjectionExecutor in ProjectionStageDefault&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42423&quot;&gt;&lt;del&gt;SERVER-42423&lt;/del&gt;&lt;/a&gt; Use ProjectionExecutor in ProjectionStageDefault&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/70383ed065e8798aafc4394af7c6d2ac92927f41&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/70383ed065e8798aafc4394af7c6d2ac92927f41&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2402978" author="ian.boros" created="Sun, 1 Sep 2019 20:52:06 +0000"  >&lt;p&gt;There may be TODOs in the code about this ticket. Be sure to grep for them before pushing.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                                        </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10320">
                    <name>Documented</name>
                                                                <inwardlinks description="is documented by">
                                        <issuelink>
            <issuekey id="1073701">DOCS-13321</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10520">
                    <name>Problem/Incident</name>
                                            <outwardlinks description="causes">
                                                        </outwardlinks>
                                                        </issuelinktype>
                    </issuelinks>
                <attachments>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2.0</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="10011"><![CDATA[Minor Change]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Thu, 3 Oct 2019 13:47:50 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        4 years, 17 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_17052" key="com.atlassian.jira.plugin.system.customfieldtypes:textarea">
                        <customfieldname>Downstream Changes Summary</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>One result of this ticket is that the findAndModify command can now use expressions (and the syntax for $project) as part of the &amp;#39;fields&amp;#39; argument. This docs page should be updated:&lt;br/&gt;
&lt;a href=&quot;https://docs.mongodb.com/manual/reference/command/findAndModify/#dbcmd.findAndModify&quot;&gt;https://docs.mongodb.com/manual/reference/command/findAndModify/#dbcmd.findAndModify&lt;/a&gt;&lt;br/&gt;
&lt;br/&gt;
The following changes to the projection language were made under this ticket:&lt;br/&gt;
&lt;br/&gt;
1) In 4.2 the following projection:&lt;br/&gt;
{a: &#8220;foo&#8221;}&lt;br/&gt;
means &amp;quot;include a&amp;quot;.&lt;br/&gt;
&lt;br/&gt;
In 4.4 this means return a set to the string &amp;quot;foo&amp;quot;.&lt;br/&gt;
&lt;br/&gt;
Numbers (double/int/long/decimal) and booleans are still treated as markers for inclusion/exclusion.&lt;br/&gt;
&lt;br/&gt;
2) Field ordering of find() projections using $elemMatch may not be the same between 4.2 and 4.4. See here in design doc:&lt;br/&gt;
&lt;a href=&quot;https://docs.google.com/document/d/1K3KuAeYg5KuD1dKw4UvPLBite43_qv4wAd79rMwiJEQ/edit#bookmark=id.4iidgo563q21&quot;&gt;https://docs.google.com/document/d/1K3KuAeYg5KuD1dKw4UvPLBite43_qv4wAd79rMwiJEQ/edit#bookmark=id.4iidgo563q21&lt;/a&gt;&lt;br/&gt;
&lt;br/&gt;
3) $slice (in find()) no longer includes the entire root of a projected subfield&lt;br/&gt;
e.g. in 4.2, this query would include all of &amp;#39;a&amp;#39;:&lt;br/&gt;
db.c.find({}, {x: 1, &amp;quot;a.c&amp;quot;: {$slice: 1}})&lt;br/&gt;
&lt;br/&gt;
In 4.4, only &amp;#39;a.c&amp;#39; will be included. This was arguably a bug.&lt;br/&gt;
&lt;br/&gt;
4) Applying the positional projection to a path which had no arrays now behaves like an inclusion projection, rather than creating an empty document. See here in design document (and links to more detailed explanations):&lt;br/&gt;
&lt;a href=&quot;https://docs.google.com/document/d/1K3KuAeYg5KuD1dKw4UvPLBite43_qv4wAd79rMwiJEQ/edit#bookmark=kix.kwu7hv9rfjc6&quot;&gt;https://docs.google.com/document/d/1K3KuAeYg5KuD1dKw4UvPLBite43_qv4wAd79rMwiJEQ/edit#bookmark=kix.kwu7hv9rfjc6&lt;/a&gt;&lt;br/&gt;
&lt;br/&gt;
This will only affect queries that use positional projection ($) on non-array fields.&lt;br/&gt;
&lt;br/&gt;
5) Applying the positional projection to a dotted path that traverses an array but does not exist in the document results in different behavior between 4.2 and 4.3. Example:&lt;br/&gt;
{code}&lt;br/&gt;
db.c.insert({a: [{b: 1}, {b: 2}]})&lt;br/&gt;
db.c.find({&amp;quot;a.b&amp;quot;: 1}, {&amp;quot;a.c.$&amp;quot;: 1}) // Yields different results between 4.2 and 4.3&lt;br/&gt;
{code}&lt;br/&gt;
&lt;br/&gt;
See here in design document: &lt;a href=&quot;https://docs.google.com/document/d/19_ouH9RnX3RGsGDzwX7HKx578ASLFMEZjBUABVfdWLg/edit#bookmark=id.vo2t8fd63kmd&quot;&gt;https://docs.google.com/document/d/19_ouH9RnX3RGsGDzwX7HKx578ASLFMEZjBUABVfdWLg/edit#bookmark=id.vo2t8fd63kmd&lt;/a&gt;</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_17050" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Downstream Team Attention</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="16942"><![CDATA[Needed]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                        <customfield id="customfield_10857" key="com.pyxis.greenhopper.jira:gh-epic-link">
                        <customfieldname>Epic Link</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>PM-684</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>
                            4 years, 17 weeks, 5 days ago
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_16465" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Linked BF Score</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>0.0</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>anton.korshunov@mongodb.com</customfieldvalue>
            <customfieldvalue>xgen-internal-githook</customfieldvalue>
            <customfieldvalue>ian.boros@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hvhjsv:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hr6snz:</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="2886">Query 2019-10-07</customfieldvalue>
    <customfieldvalue id="3283">Query 2019-10-21</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_17051" key="com.atlassian.jira.plugin.system.customfieldtypes:multicheckboxes">
                        <customfieldname>Teams Impacted</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="16943"><![CDATA[Cloud]]></customfieldvalue>
    <customfieldvalue key="16944"><![CDATA[Docs]]></customfieldvalue>
    <customfieldvalue key="16945"><![CDATA[Drivers]]></customfieldvalue>
    <customfieldvalue key="16946"><![CDATA[Triage and Release]]></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|hvh627:</customfieldvalue>

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