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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[KAFKA-199] Introduce a mechanism of differentiating partial IdStrategy</title>
                <link>https://jira.mongodb.org/browse/KAFKA-199</link>
                <project id="16285" key="KAFKA">Kafka Connector</project>
                    <description>&lt;p&gt;&lt;tt&gt;DeleteOneBusinessKeyStrategy&lt;/tt&gt;, &lt;tt&gt;ReplaceOneBusinessKeyStrategy&lt;/tt&gt; (maybe other places in the codebase) need to differentiate partial &lt;tt&gt;IdStrategy&lt;/tt&gt;. Currently this is done by using the following code:&lt;/p&gt;
&lt;p/&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;isPartialId = idStrategy &lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;instanceof&lt;/span&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; PartialKeyStrategy || idStrategy &lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;instanceof&lt;/span&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; PartialValueStrategy;&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;This code relies on the preexisting knowledge of all partial &lt;tt&gt;IdStrategy&lt;/tt&gt; implementations. This means that if a new partial implementation appears, the code mentioned above will have to be updated in multiple places. The problem with this approach is that the author of the new partial implementation has no way of knowing that there are places in the codebase that must be updated.&lt;/p&gt;

&lt;p&gt;We could add a mechanism of differentiating partial &lt;tt&gt;IdStrategy&lt;/tt&gt; by using, for example,  one of the following approaches:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;A new default method &lt;tt&gt;IdStrategy.isPartial&lt;/tt&gt; returning &lt;tt&gt;false&lt;/tt&gt;. This is the preferable approach.&lt;/li&gt;
	&lt;li&gt;A new marker interface &lt;tt&gt;IdStrategy.Partial&lt;/tt&gt;. This approach should only be considered if implementing the first approach encounters difficulties not apparent at the point of creating this ticket.&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Fo more details, please see the original &lt;a href=&quot;https://github.com/mongodb/mongo-kafka/pull/56#discussion_r576611962&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;review discussion&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1627522">KAFKA-199</key>
            <summary>Introduce a mechanism of differentiating partial IdStrategy</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="valentin.kovalenko@mongodb.com">Valentin Kavalenka</reporter>
                        <labels>
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                <created>Thu, 18 Feb 2021 16:26:13 +0000</created>
                <updated>Wed, 30 Mar 2022 23:24:44 +0000</updated>
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            <issuekey id="1516567">KAFKA-168</issuekey>
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