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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-2739] The anonymous type-based projection produces invalid projection when hierarchial fields have common prefix</title>
                <link>https://jira.mongodb.org/browse/CSHARP-2739</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description>&lt;p&gt;Consider the following test:&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;
&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;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;  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;        [Fact]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;        public void Should_translate_with_a_hierarchical_redundancy_and_when_one_field_doesnt_start_with_another()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;            var result = Project(p =&amp;gt; new { p.C.E, F = p.C.E1.F }, &quot;{ C : { E : { H : 3 }, E1 : { F : 2 } } }&quot;);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;            result.Projection.Should().Be(&quot;{ \&quot;C.E\&quot; : 1, \&quot;C.E1.F\&quot; : 1, _id : 0 }&quot;);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;            result.Value.E.H.Should().Be(3);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;            result.Value.F.Should().Be(2);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;   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;        }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;With released 2.9.1 this test fails, because the &lt;tt&gt;FindProjectionTranslator.GetUniqueFieldsByHierarchy&lt;/tt&gt; does not use periods to determine the common prefix.&lt;/p&gt;</description>
                <environment></environment>
        <key id="921932">CSHARP-2739</key>
            <summary>The anonymous type-based projection produces invalid projection when hierarchial fields have common prefix</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="dmitry.lukyanov@mongodb.com">Dmitry Lukyanov</assignee>
                                    <reporter username="onyxmaster">Aristarkh Zagorodnikov</reporter>
                        <labels>
                    </labels>
                <created>Tue, 10 Sep 2019 13:27:21 +0000</created>
                <updated>Sat, 28 Oct 2023 11:48:37 +0000</updated>
                            <resolved>Thu, 26 Sep 2019 14:58:41 +0000</resolved>
                                    <version>2.9.1</version>
                                    <fixVersion>2.9.2</fixVersion>
                                    <component>Linq</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2437076" author="xgen-internal-githook" created="Fri, 27 Sep 2019 19:46:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;onyxmaster&apos;, &apos;email&apos;: &apos;xm@drive.net&apos;, &apos;name&apos;: &apos;Aristarkh Zagorodnikov&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-2739&quot; title=&quot;The anonymous type-based projection produces invalid projection when hierarchial fields have common prefix&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-2739&quot;&gt;&lt;del&gt;CSHARP-2739&lt;/del&gt;&lt;/a&gt;: Improve hierarchical fields projection.&lt;br/&gt;
Branch: v2.9.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/4908a9e01cdb199daeb0a8831cf0df97bfbc2ef1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/4908a9e01cdb199daeb0a8831cf0df97bfbc2ef1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2434581" author="xgen-internal-githook" created="Thu, 26 Sep 2019 14:57:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Aristarkh Zagorodnikov&apos;, &apos;username&apos;: &apos;onyxmaster&apos;, &apos;email&apos;: &apos;xm@drive.net&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-2739&quot; title=&quot;The anonymous type-based projection produces invalid projection when hierarchial fields have common prefix&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-2739&quot;&gt;&lt;del&gt;CSHARP-2739&lt;/del&gt;&lt;/a&gt;: Improve hierarchical fields projection.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/384d10d58d9dc308bd29e4eb0f1c8804ee954f39&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/384d10d58d9dc308bd29e4eb0f1c8804ee954f39&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2414345" author="onyxmaster" created="Tue, 10 Sep 2019 13:30:36 +0000"  >&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/pull/383&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/pull/383&lt;/a&gt;&lt;/p&gt;</comment>
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