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    <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>[DOCS-13493] Investigate changes in SERVER-45453: Change name and usage of $_internalJs to $function</title>
                <link>https://jira.mongodb.org/browse/DOCS-13493</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #c2d2c2;&quot;&gt;
&lt;p&gt;    Adds a new $function expression which can execute javascript code.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    Rename $_internalJs to $function, and change how it parses its arguments. &lt;br/&gt;
$function takes the following required fields:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;body - a function given as a constant expression of the String or Code BSON type&lt;/li&gt;
	&lt;li&gt;args - function&#8217;s arguments given by an expression evaluating to the Array BSON type.&lt;/li&gt;
	&lt;li&gt;lang - a language specifier given as a constant expression of the String type; the only acceptable value for now is &apos;js&apos;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Update MapReduce where necessary to generate $function expressions instead of $_internalJs.&lt;/p&gt;

&lt;p&gt;Because this is a new operator, we should restrict its use to FCV 4.4 to prevent problems with downgrade (for example, to prevent users from creating views that would be invalid on 4.2). But we should also make sure MapReduce still works on FCV 4.2, even though it uses this new operator internally.&lt;/p&gt;


&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="1221829">DOCS-13493</key>
            <summary>Investigate changes in SERVER-45453: Change name and usage of $_internalJs to $function</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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                            <label>docs-query</label>
                    </labels>
                <created>Wed, 4 Mar 2020 15:10:04 +0000</created>
                <updated>Mon, 30 Oct 2023 20:25:25 +0000</updated>
                            <resolved>Fri, 27 Mar 2020 15:53:53 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due>Fri, 27 Mar 2020 00:00:00 +0000</due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4540188" author="edu.bot" created="Tue, 10 May 2022 22:41:39 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45453&quot; title=&quot;Change name and usage of $_internalJs to $function&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45453&quot;&gt;&lt;del&gt;SERVER-45453&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;/p&gt;</comment>
                            <comment id="3004413" author="xgen-internal-githook" created="Fri, 27 Mar 2020 15:45:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kay Kim&apos;, &apos;username&apos;: &apos;kay-kim&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13493&quot; title=&quot;Investigate changes in SERVER-45453: Change name and usage of $_internalJs to $function&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13493&quot;&gt;&lt;del&gt;DOCS-13493&lt;/del&gt;&lt;/a&gt;: 4.4 $function&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/7f93fadbd07f3c5ba391289a38c1316cbdc8b016&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/7f93fadbd07f3c5ba391289a38c1316cbdc8b016&lt;/a&gt;&lt;/p&gt;</comment>
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