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    <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>
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<item>
            <title>[SERVER-23114] Extend ExpressionKeysPrivate::getS2Keys() to return prefixes of the indexed fields that cause the index to be multikey</title>
                <link>https://jira.mongodb.org/browse/SERVER-23114</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="272239">SERVER-23114</key>
            <summary>Extend ExpressionKeysPrivate::getS2Keys() to return prefixes of the indexed fields that cause the index to be multikey</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="9">Done</resolution>
                                        <assignee username="max.hirschhorn@mongodb.com">Max Hirschhorn</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Mon, 14 Mar 2016 14:36:02 +0000</created>
                <updated>Mon, 6 Jun 2016 21:16:40 +0000</updated>
                            <resolved>Fri, 3 Jun 2016 17:30:35 +0000</resolved>
                                                    <fixVersion>3.3.8</fixVersion>
                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1283723" author="xgen-internal-githook" created="Fri, 3 Jun 2016 17:28:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;visemet&apos;, u&apos;name&apos;: u&apos;Max Hirschhorn&apos;, u&apos;email&apos;: u&apos;max.hirschhorn@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-23114&quot; title=&quot;Extend ExpressionKeysPrivate::getS2Keys() to return prefixes of the indexed fields that cause the index to be multikey&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-23114&quot;&gt;&lt;del&gt;SERVER-23114&lt;/del&gt;&lt;/a&gt; Compute multikey paths in 2dsphere index key generation.&lt;/p&gt;

&lt;p&gt;Propagates information about the prefixes of the indexed fields that&lt;br/&gt;
cause the index to be multikey as a result of inserting the generated&lt;br/&gt;
keys.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2a2ca32dd534c801851cadc446906152b4dbeffe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2a2ca32dd534c801851cadc446906152b4dbeffe&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1283722" author="xgen-internal-githook" created="Fri, 3 Jun 2016 17:28:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;visemet&apos;, u&apos;name&apos;: u&apos;Max Hirschhorn&apos;, u&apos;email&apos;: u&apos;max.hirschhorn@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-23114&quot; title=&quot;Extend ExpressionKeysPrivate::getS2Keys() to return prefixes of the indexed fields that cause the index to be multikey&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-23114&quot;&gt;&lt;del&gt;SERVER-23114&lt;/del&gt;&lt;/a&gt; Move functions involving dotted paths to separate library.&lt;/p&gt;

&lt;p&gt;The ability to specify a dotted path (e.g. &quot;a.b&quot;) to traverse through&lt;br/&gt;
embedded objects and array elements isn&apos;t defined in the BSON&lt;br/&gt;
specification and so it doesn&apos;t belong in our BSON library.&lt;/p&gt;

&lt;p&gt;The following functions have been defined within a &apos;dotted_path_support&apos;&lt;br/&gt;
namespace and accept an additional BSONObj as their first argument to&lt;br/&gt;
replace the associated method on the BSONObj class.&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;extractElementAtPath() is functionally equivalent to&lt;br/&gt;
    BSONObj::getFieldDotted().&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;extractElementAtPathOrArrayAlongPath() is functionally equivalent to&lt;br/&gt;
    BSONObj::getFieldDottedOrArray().&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;extractAllElementsAlongPath() is functionally equivalent to&lt;br/&gt;
    BSONObj::getFieldsDotted().&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;extractElementsBasedOnTemplate() is functionally equivalent to&lt;br/&gt;
    BSONObj::extractFields().&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;compareObjectsAccordingToSort() is functionally equivalent to&lt;br/&gt;
    BSONObj::woSortOrder().&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/cecbe424d32cbb475d9b0384d29b98a9fba9c89f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/cecbe424d32cbb475d9b0384d29b98a9fba9c89f&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="1283721" author="xgen-internal-githook" created="Fri, 3 Jun 2016 17:27:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;visemet&apos;, u&apos;name&apos;: u&apos;Max Hirschhorn&apos;, u&apos;email&apos;: u&apos;max.hirschhorn@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-23114&quot; title=&quot;Extend ExpressionKeysPrivate::getS2Keys() to return prefixes of the indexed fields that cause the index to be multikey&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-23114&quot;&gt;&lt;del&gt;SERVER-23114&lt;/del&gt;&lt;/a&gt; Use functions in dotted_path_support namespace.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/mongo-enterprise-modules/commit/fc0a50b9382f574837bf8f2f8b9d9c34810b7b53&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo-enterprise-modules/commit/fc0a50b9382f574837bf8f2f8b9d9c34810b7b53&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="282182">SERVER-23906</issuekey>
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