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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=eyJpIjoiYWNiMGQ4MmY0ZDUwNDI3YTk4NDI0YjE3YTQxNzZkMzAiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate Search</a> / <a href="https://hibernate.atlassian.net/browse/HSEARCH-3671?atlOrigin=eyJpIjoiYWNiMGQ4MmY0ZDUwNDI3YTk4NDI0YjE3YTQxNzZkMzAiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-37f9085a-f475-424b-a631-32ead706ff53" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3671?atlOrigin=eyJpIjoiYWNiMGQ4MmY0ZDUwNDI3YTk4NDI0YjE3YTQxNzZkMzAiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HSEARCH-3671</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-3671?atlOrigin=eyJpIjoiYWNiMGQ4MmY0ZDUwNDI3YTk4NDI0YjE3YTQxNzZkMzAiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Make SearchScope session-independent</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-37f9085a-f475-424b-a631-32ead706ff53" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"> Improvement </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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<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> mapper-javabean, mapper-orm, mapper-pojo </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"> 29/Aug/2019 23:46 PM </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.Alpha-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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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0; margin-top: 0">Currently <tt>SearchScope</tt> is a very niche interface, most users being expected to use the <tt>SearchSession</tt> methods that simply delegate to the scope.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">The main (only?) use for <tt>SearchScope</tt> is when users want to build re-usable predicates/sorts/projections etc. Then, using the scope, they can build objects that they'll be able to re-use in other </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">These objects are session-independent, so they could be used from one session to another, but unfortunately the scope is not, which makes creating re-usable objects rather weird: you have to open a session for something that doesn't need a session.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">It would be nice if we could make <tt>SearchScope</tt> session-independent. Basically the <tt>SearchScope</tt> would only represent a set of indexed types, and expose operations on this set. Only some operations will require a session, which will be passed as a parameter: <tt>search()</tt> would become <tt>search(EntityManager)</tt>, <tt>massIndexer()</tt> would become <tt>massIndexer(EntityManager)</tt>, and so on.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">The <tt>SearchScope</tt> will no longer be retrieved from the <tt>SearchSession</tt>. Instead, we will introduce a <tt>SearchMapping</tt> interface (as mentioned in <span class="jira-issue-macro" data-jira-key="HSEARCH-3640"> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3640" class="jira-issue-macro-key issue-link" title="Expose backends/indexes through the ORM mapper APIs" style="color: #3b73af; text-decoration: none"> <img class="icon" src="https://hibernate.atlassian.net/secure/viewavatar?size=medium&avatarId=12150&avatarType=issuetype"> HSEARCH-3640 </a> <span class="aui-lozenge aui-lozenge-subtle aui-lozenge-complete jira-macro-single-issue-export-pdf" style="background: #cccccc; border: 1px solid #cccccc; border-radius: 3px; color: #333333; display: inline-block; font-size: 11px; font-weight: bold; line-height: 99%; margin: 0; padding: 2px 5px; text-align: center; text-decoration: none; text-transform: uppercase; background-color: #ffffff; border-color: #cccccc; color: #333333" bgcolor="#ffffff">Open</span> </span> ), and retrieving a scope will go something like this:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px; border-radius: 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
SearchMapping mapping = Search.mapping(entityManagerFactory);
SearchScope<MyAbstractType> scope = mapping.scope(MyType1.class, MyType2.class);
SearchPredicate predicate = scope.predicate().....toPredicate();
SearchResult<MyAbstractType> = scope.search(entityManager).predicate(predicate).fetch();
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Which is really not far from what we currently have:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #cccccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #cccccc; -moz-border-radius: 3px; border-radius: 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0; margin-top: 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
SearchSession session = Search.session(entityManager);
SearchScope<MyAbstractType> scope = session.scope(MyType1.class, MyType2.class);
SearchPredicate predicate = scope.predicate().....toPredicate();
SearchResult<MyAbstractType> = scope.search().predicate(predicate).fetch();
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Nothing will change on <tt>SearchSession</tt>, as implementations will only pass an additional parameter to the scope, which will be transparent to users. We will just remove (or at least deprecate for later removal) the <tt>.scope()</tt> methods on <tt>SearchSession</tt>.</p> </td>
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