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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-19256] Support ordinary arithmetic parsing in Aggregation</title>
                <link>https://jira.mongodb.org/browse/SERVER-19256</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Arithmetic expressions in Aggregation must now be coded by hand in a rather quirky JSON prefix notation of the form {&lt;tt&gt;$opName: [&quot;$field1&quot;, &quot;$field2&quot;]&lt;/tt&gt;}. This becomes unwieldy and impractical with expressions of even moderate complexity, as the operands themselves become JSON subdocuments.&lt;/p&gt;

&lt;p&gt;The server could better perform this function by accepting an expression in conventional infix operator precedence notation as used by most programming languages, of the form {&lt;tt&gt;$arithmetic: &quot;field1 opSymbol field2&quot;&lt;/tt&gt;}. For example, &lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{$arithmetic: &quot;a * b + c / (d - e)&quot;}&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt; 
&lt;p&gt;would translate to &lt;/p&gt;
&lt;p/&gt;
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&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{$add:[&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;  {$multiply: [&quot;$a&quot;, &quot;$b&quot;]},&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;  {$divide: [&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    &quot;$c&quot;, &lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    {$subtract: [&quot;$d&quot;, &quot;$e&quot;]&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;  ]}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
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&lt;p/&gt;</description>
                <environment></environment>
        <key id="214469">SERVER-19256</key>
            <summary>Support ordinary arithmetic parsing in Aggregation</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="chris.biow">Chris Biow</reporter>
                        <labels>
                            <label>usability</label>
                    </labels>
                <created>Thu, 2 Jul 2015 01:13:19 +0000</created>
                <updated>Tue, 6 Dec 2022 04:48:51 +0000</updated>
                            <resolved>Fri, 11 Dec 2015 22:12:14 +0000</resolved>
                                                                    <component>Aggregation Framework</component>
                                        <votes>1</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="956349" author="chris.biow@10gen.com" created="Thu, 2 Jul 2015 01:18:32 +0000"  >&lt;p&gt;A similar request appeared in the comments of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-17684&quot; title=&quot;Allow invocation of JavaScript functions/closures from $project&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-17684&quot;&gt;&lt;del&gt;SERVER-17684&lt;/del&gt;&lt;/a&gt; but was answered exclusively in a narrower context of JavaScript roundoff functions.&lt;/p&gt;</comment>
                            <comment id="956348" author="chris.biow@10gen.com" created="Thu, 2 Jul 2015 01:16:59 +0000"  >&lt;p&gt;Spring Framework SpEL expressions provide &lt;a href=&quot;https://spring.io/blog/2013/12/04/what-s-new-in-spring-data-mongodb-1-4-m1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a similar capability&lt;/a&gt; to encode aggregation arithmetic in ordinary notation.&lt;/p&gt;</comment>
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