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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>[CSHARP-3980] Remove reliance on &quot;$explain&quot; modifier so FindOpcodeOperation can be removed</title>
                <link>https://jira.mongodb.org/browse/CSHARP-3980</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description></description>
                <environment></environment>
        <key id="1939552">CSHARP-3980</key>
            <summary>Remove reliance on &quot;$explain&quot; modifier so FindOpcodeOperation can be removed</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="10300" iconUrl="https://jira.mongodb.org/images/icons/priorities/medium.svg">Unknown</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="dmitry.lukyanov@mongodb.com">Dmitry Lukyanov</assignee>
                                    <reporter username="dmitry.lukyanov@mongodb.com">Dmitry Lukyanov</reporter>
                        <labels>
                    </labels>
                <created>Tue, 30 Nov 2021 19:07:44 +0000</created>
                <updated>Sat, 28 Oct 2023 11:47:23 +0000</updated>
                            <resolved>Thu, 20 Jan 2022 15:46:39 +0000</resolved>
                                                    <fixVersion>2.15.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4303047" author="xgen-internal-githook" created="Thu, 20 Jan 2022 15:46:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;DmitryLukyanov&apos;, &apos;email&apos;: &apos;dmitry.lukyanov@mongodb.com&apos;, &apos;username&apos;: &apos;DmitryLukyanov&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-3980&quot; title=&quot;Remove reliance on &amp;quot;$explain&amp;quot; modifier so FindOpcodeOperation can be removed&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-3980&quot;&gt;&lt;del&gt;CSHARP-3980&lt;/del&gt;&lt;/a&gt;: Remove reliance on &quot;$explain&quot; modifier so FindOpcodeOperation can be removed.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/169c6169c217f4bea8e36297b837952976bffbe8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/169c6169c217f4bea8e36297b837952976bffbe8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4291981" author="rstam" created="Thu, 13 Jan 2022 21:19:23 +0000"  >&lt;p&gt;I think the goals of this ticket are actually:&lt;/p&gt;

&lt;p&gt;1. Remove the `FindOpcodeOperation` which now is only used when `$explain` modifier is present&lt;/p&gt;

&lt;p&gt;2. Reimplement `MongoCursor.Explain` so that it uses `ExplainOperation` instead of `$explain`&lt;/p&gt;

&lt;p&gt;The following should &lt;b&gt;not&lt;/b&gt;&#160;be goals:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Support the `$explain` `Modifier` in any of the 2.x APIs that support modifiers&lt;/li&gt;
	&lt;li&gt;Support the `$explain` `Modifier` in any of the 1.x APIs that support modifiers&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;The main reason to not support the `$explain` modifier is that most of our APIs are strongly typed (e.g. `IMongoCursor&amp;lt;Person&amp;gt;`) and the `$explain` modifier changes what is returned from the server such that it can&apos;t be deserialized anyway (i.e. the explain output cannot be deserialized into a `Person` instance).&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="split to">
                                        <issuelink>
            <issuekey id="1959230">CSHARP-4008</issuekey>
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