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    <title>MongoDB Jira</title>
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    <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-51356] Single eval frame model in SBE</title>
                <link>https://jira.mongodb.org/browse/SERVER-51356</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, SBE builder in sbe_stage_builder_filter.cpp uses stack to isolate generation of SBE sub-trees.&lt;br/&gt;
SBE builder in sbe_stage_builder_expression.cpp uses stacks for each type of expressions which require sub-tree generation (for instance, there is a stack for logical expressions). We could unify these stacks into one abstraction like it is done in sbe_stage_builder_filter.cpp.&lt;/p&gt;

&lt;p&gt;We should also research if it is possible to unify stacks from sbe_stage_builder_expression.cpp and sbe_stage_builder_filter.cpp into one abstraction to use in both places.&lt;/p&gt;

&lt;p&gt;Also it looks like we would be able to extract logical expressions generation code from both builders into common code after this refactoring is performed. We should explore this possibility too.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1501885">SERVER-51356</key>
            <summary>Single eval frame model in SBE</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="nikita.lapkov@mongodb.com">Nikita Lapkov</assignee>
                                    <reporter username="nikita.lapkov@mongodb.com">Nikita Lapkov</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Mon, 5 Oct 2020 14:56:25 +0000</created>
                <updated>Sun, 29 Oct 2023 22:02:22 +0000</updated>
                            <resolved>Thu, 5 Nov 2020 17:02:23 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3477830" author="xgen-internal-githook" created="Thu, 5 Nov 2020 17:00:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Nikita Lapkov&apos;, &apos;email&apos;: &apos;nikita.lapkov@mongodb.com&apos;, &apos;username&apos;: &apos;laplab&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-51356&quot; title=&quot;Single eval frame model in SBE&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-51356&quot;&gt;&lt;del&gt;SERVER-51356&lt;/del&gt;&lt;/a&gt; Introduce single eval frame model to SBE builders&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bf9d4cc9999f6fa7f26d9801671813daa64c9d36&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bf9d4cc9999f6fa7f26d9801671813daa64c9d36&lt;/a&gt;&lt;/p&gt;</comment>
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