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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>[JAVA-1629] DBCursor getters should not return copies for mutable objects</title>
                <link>https://jira.mongodb.org/browse/JAVA-1629</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;The 3.0.x branch implementation of DBCursor.getQuery and DBCursor.getKeysWanted return a copy of the internal property, whereas before they returned a reference to the internal copy.  This break clients who do:&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;
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					&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;DBCursor cursor = collection.find(&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;new&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; BasicDBObject());&lt;/span&gt;&lt;/pre&gt;
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						&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;cursor.getQuery().put(&lt;/span&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&quot;x&quot;&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;, &lt;/span&gt;&lt;span style=&quot;color: #009900; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;1&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;);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;

&lt;p&gt;since because getQuery returns a copy, the put has no effect on the query that&apos;s actually performed.&lt;/p&gt;

&lt;p&gt;This should be reverted to the previous behavior.&lt;/p&gt;
</description>
                <environment></environment>
        <key id="180255">JAVA-1629</key>
            <summary>DBCursor getters should not return copies for mutable objects</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="9">Done</resolution>
                                        <assignee username="jeff.yemin@mongodb.com">Jeffrey Yemin</assignee>
                                    <reporter username="jeff.yemin@mongodb.com">Jeffrey Yemin</reporter>
                        <labels>
                    </labels>
                <created>Thu, 22 Jan 2015 22:07:41 +0000</created>
                <updated>Tue, 31 Mar 2015 20:09:45 +0000</updated>
                            <resolved>Fri, 23 Jan 2015 13:44:52 +0000</resolved>
                                                    <fixVersion>3.0.0</fixVersion>
                                    <component>Query Operations</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="869415" author="jeff.yemin" created="Tue, 31 Mar 2015 20:09:45 +0000"  >&lt;p&gt;Closing all resolved 3.0.0 issues, as 3.0.0 has been tagged and released.&lt;/p&gt;</comment>
                            <comment id="818080" author="xgen-internal-githook" created="Fri, 30 Jan 2015 18:47:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jyemin&apos;, u&apos;name&apos;: u&apos;Jeff Yemin&apos;, u&apos;email&apos;: u&apos;jeff.yemin@10gen.com&apos;}
&lt;p&gt;Message: Changed DBCursor behavior such that any method that returns a DBObject property of the query returns the internal reference instead of a copy of it,&lt;br/&gt;
which is the behavior in 2.x and allows an idiom where the caller keeps tacking on criteria/keys to the internal DBObject instead of setting them all at&lt;br/&gt;
once beforehand.&lt;/p&gt;

&lt;p&gt;Thanks to the MongoJack tests for alerting us to this behavior change.&lt;/p&gt;

&lt;p&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-1629&quot; title=&quot;DBCursor getters should not return copies for mutable objects&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-1629&quot;&gt;&lt;del&gt;JAVA-1629&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/83d74fc4edf6f7840af5ad284f19d780a04320cd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/83d74fc4edf6f7840af5ad284f19d780a04320cd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="811614" author="xgen-internal-githook" created="Fri, 23 Jan 2015 13:44:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jyemin&apos;, u&apos;name&apos;: u&apos;Jeff Yemin&apos;, u&apos;email&apos;: u&apos;jeff.yemin@10gen.com&apos;}
&lt;p&gt;Message: Changed DBCursor behavior such that any method that returns a DBObject property of the query returns the internal reference instead of a copy of it,&lt;br/&gt;
which is the behavior in 2.x and allows an idiom where the caller keeps tacking on criteria/keys to the internal DBObject instead of setting them all at&lt;br/&gt;
once beforehand.&lt;/p&gt;

&lt;p&gt;Thanks to the MongoJack tests for alerting us to this behavior change.&lt;/p&gt;

&lt;p&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-1629&quot; title=&quot;DBCursor getters should not return copies for mutable objects&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-1629&quot;&gt;&lt;del&gt;JAVA-1629&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: 3.0.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/83d74fc4edf6f7840af5ad284f19d780a04320cd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/83d74fc4edf6f7840af5ad284f19d780a04320cd&lt;/a&gt;&lt;/p&gt;</comment>
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