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<td class="page-title-pattern-first-line " style="padding: 0; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HSEARCH?atlOrigin=eyJpIjoiMzgzZTIxYzc3YzVjNGM1MTgxODg5ZDRjNGUzMTEyNDgiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate Search</a> / <a href="https://hibernate.atlassian.net/browse/HSEARCH-3975?atlOrigin=eyJpIjoiMzgzZTIxYzc3YzVjNGM1MTgxODg5ZDRjNGUzMTEyNDgiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-b3ee835a-ad31-449c-a1a4-3e6a002fcaae" height="16" width="16" border="0" align="absmiddle" alt="Task" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3975?atlOrigin=eyJpIjoiMzgzZTIxYzc3YzVjNGM1MTgxODg5ZDRjNGUzMTEyNDgiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HSEARCH-3975</a> </td>
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<td style="vertical-align: top;; padding: 0; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3975?atlOrigin=eyJpIjoiMzgzZTIxYzc3YzVjNGM1MTgxODg5ZDRjNGUzMTEyNDgiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Expose scrolling operations through JPA/ORM queries</a> </span> </td>
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<td class="has-icon" style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-b3ee835a-ad31-449c-a1a4-3e6a002fcaae" height="16" width="16" border="0" align="absmiddle" alt="Task" style="vertical-align: text-bottom"> Task </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> mapper-orm </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 30/Jul/2020 09:04 AM </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Fix Versions:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 6.0.0.Beta-backlog </td>
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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="yrodiere" style="color:#6c797f;; color: #3b73af; text-decoration: none" id="email_yrodiere" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A58fa1ced-171a-4c00-97e8-5d70d442cc4b"> Yoann Rodière </a> </td>
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<blockquote style="margin: 10px 0 0; margin-top: 0; border-left: 1px solid #cccccc; color: #707070; margin-left: 19px; padding: 10px 20px">
<ol>
<li>Implement <tt>scroll()</tt> and <tt>scroll(ScrollMode)</tt> in <tt>HibernateOrmSearchQueryAdapter</tt>, relying on <tt>SearchQuery#scroll(int)</tt> under the scene.
<ol>
<li>Only <tt>ScrollMode.FORWARD_ONLY</tt> will be supported.</li>
<li>We will need to decide on a page size. Let's use the same size as the loading fetch size, which should be accessible from <tt>org.hibernate.search.mapper.orm.search.loading.impl.MutableEntityLoadingOptions#getFetchSize</tt>.</li>
<li>Some internal windowing will probably be necessary. Just copy/paste the <tt>org.hibernate.search.elasticsearch.util.impl.Window</tt> class from Search 5 and adapt it. Do not forget to also copy the unit test, <tt>org.hibernate.search.elasticsearch.test.WindowTest</tt>.</li>
<li>See <tt>org.hibernate.search.query.hibernate.impl.ScrollableResultsImpl</tt> for an example of how it was done in Search 5 (may or may not be helpful).</li>
</ol> </li>
<li>Add tests for <tt>scroll()</tt> and <tt>scroll(ScrollMode)</tt> in <tt>org.hibernate.search.integrationtest.mapper.orm.hibernateormapis.ToHibernateOrmIT</tt>:
<ol>
<li>Nominal case (create scroll, fetch some hits until all hits have been consumed, close).</li>
<li>Edge cases: not fetching any result (should work fine), fetching some results but not all of them (should work fine), trying to fetch more than the total hit count (should throw an exception).</li>
<li>Error cases: trying to scroll back, trying to call the <tt>get*(int)</tt> methods...</li>
<li>Check that using any scroll mode other than ScrollMode.FORWARD_ONLY fails.</li>
<li>Test <tt>query.stream()</tt> too (it's based on <tt>scroll()</tt>).</li>
</ol> </li>
<li>Add tests for <tt>getResultStream()</tt> in <tt>org.hibernate.search.integrationtest.mapper.orm.hibernateormapis.ToJpaIT</tt>.</li>
</ol>
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