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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-4484] tighten up semantics of Cursor interface</title>
                <link>https://jira.mongodb.org/browse/SERVER-4484</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There are some subtle differences in the ways different cursors behave, for example some have matchers and some don&apos;t, some may change the return values of functions like indexKey() over the course of iteration, some may support certain operations when they are not ok() while others do not.  We could simplify the behaviors, make them more uniform across cursors, and document them so users of the Cursor class know what to expect.&lt;/p&gt;</description>
                <environment></environment>
        <key id="26540">SERVER-4484</key>
            <summary>tighten up semantics of Cursor interface</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="aaron">Aaron Staple</reporter>
                        <labels>
                    </labels>
                <created>Tue, 13 Dec 2011 21:47:40 +0000</created>
                <updated>Wed, 10 Dec 2014 23:18:35 +0000</updated>
                            <resolved>Tue, 14 Jan 2014 18:34:14 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="481913" author="eliot" created="Tue, 14 Jan 2014 18:34:14 +0000"  >&lt;p&gt;The Cursor interface has gone away&lt;/p&gt;</comment>
                            <comment id="101725" author="auto" created="Fri, 23 Mar 2012 00:11:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;astaple&apos;, u&apos;name&apos;: u&apos;Aaron&apos;, u&apos;email&apos;: u&apos;aaron@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4484&quot; title=&quot;tighten up semantics of Cursor interface&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4484&quot;&gt;&lt;del&gt;SERVER-4484&lt;/del&gt;&lt;/a&gt; Comments attempting to describe how Cursors currently ensure consistency after a write&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7775a2710b1455815e441edc0866260ea2964d26&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7775a2710b1455815e441edc0866260ea2964d26&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="97656" author="auto" created="Sun, 11 Mar 2012 20:02:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;astaple&apos;, u&apos;name&apos;: u&apos;Aaron&apos;, u&apos;email&apos;: u&apos;aaron@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4669&quot; title=&quot;query optimizer refactoring after migration to query optimizer cursor&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4669&quot;&gt;&lt;del&gt;SERVER-4669&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4484&quot; title=&quot;tighten up semantics of Cursor interface&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4484&quot;&gt;&lt;del&gt;SERVER-4484&lt;/del&gt;&lt;/a&gt; Cursor::prepareToYield() no longer returns a value; Cursor::supportYields() should be checked before calling Cursor::prepareToYield() if yielding is required&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8cf281eb779c7ebccd6c3b5b3783bef7e31c6893&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8cf281eb779c7ebccd6c3b5b3783bef7e31c6893&lt;/a&gt;&lt;/p&gt;</comment>
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