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<channel>
    <title>Doctrine Project</title>
    <link>http://www.doctrine-project.org/jira</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>5.2.7</version>
        <build-number>850</build-number>
        <build-date>21-02-2013</build-date>
    </build-info>

<item>
            <title>[DDC-2166] Improve Identifier hashing in IdentiyMap</title>
                <link>http://www.doctrine-project.org/jira/browse/DDC-2166</link>
                <project id="10032" key="DDC">Doctrine 2 - ORM</project>
                        <description>&lt;p&gt;There are currently some drawbacks with identifier hashing:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;They only work on one level for derived keys&lt;/li&gt;
	&lt;li&gt;The code is suspect to high performance requirements&lt;/li&gt;
	&lt;li&gt;Composite Keys might be suspect to weird bugs if they contain spaces.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;There is a PR by goetas (&lt;a href=&quot;https://github.com/doctrine/doctrine2/pull/232&quot; class=&quot;external-link&quot;&gt;https://github.com/doctrine/doctrine2/pull/232&lt;/a&gt;) that solves some issues, however adds a performance hit.&lt;/p&gt;

&lt;p&gt;We should move the conditional logic of this code out and use a strategy pattern to improve both performance and robustness of this code.&lt;/p&gt;</description>
                <environment></environment>
            <key id="14268">DDC-2166</key>
            <summary>Improve Identifier hashing in IdentiyMap</summary>
                <type id="4" iconUrl="http://www.doctrine-project.org/jira/images/icons/issuetypes/improvement.png">Improvement</type>
                                <priority id="3" iconUrl="http://www.doctrine-project.org/jira/images/icons/priorities/major.png">Major</priority>
                    <status id="1" iconUrl="http://www.doctrine-project.org/jira/images/icons/statuses/open.png">Open</status>
                    <resolution id="-1">Unresolved</resolution>
                    <security id="10000">All</security>
                        <assignee username="beberlei">Benjamin Eberlei</assignee>
                                <reporter username="beberlei">Benjamin Eberlei</reporter>
                        <labels>
                    </labels>
                <created>Sun, 25 Nov 2012 13:38:29 +0000</created>
                <updated>Sun, 25 Nov 2012 13:38:29 +0000</updated>
                                                                            <due></due>
                    <votes>0</votes>
                        <watches>1</watches>
                                <attachments>
                </attachments>
            <subtasks>
        </subtasks>
        </item>
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