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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=eyJpIjoiNjAwYmM1OWI4MmMxNDhkZGFiNGE2ZDE1OGEzYjkxOGMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate Search</a> / <a href="https://hibernate.atlassian.net/browse/HSEARCH-3628?atlOrigin=eyJpIjoiNjAwYmM1OWI4MmMxNDhkZGFiNGE2ZDE1OGEzYjkxOGMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-51e80f10-d0a7-4e97-a57b-2e16b6d92833" height="16" width="16" border="0" align="absmiddle" alt="New Feature" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3628?atlOrigin=eyJpIjoiNjAwYmM1OWI4MmMxNDhkZGFiNGE2ZDE1OGEzYjkxOGMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HSEARCH-3628</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-3628?atlOrigin=eyJpIjoiNjAwYmM1OWI4MmMxNDhkZGFiNGE2ZDE1OGEzYjkxOGMiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Per-type, finer loading options in search queries (fetch graph, ...)</a> </span> </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: 10px 0 0; margin-top: 0">Moved the part about filtering to <span class="jira-issue-macro" data-jira-key="HSEARCH-3630"> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3630" class="jira-issue-macro-key issue-link" title="Combine the results of a database query and a search query" style="color: #3b73af; text-decoration: none"> <img class="icon" src="https://hibernate.atlassian.net/secure/viewavatar?size=medium&avatarId=12151&avatarType=issuetype"> HSEARCH-3630 </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> .</p> </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">Change By:</th>
<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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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Summary:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <span class="diffcontext">Per-type, finer loading options in search queries (fetch graph,</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;"> WHERE clauses,</span> <span class="diffcontext"> ...)</span> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <span class="diffcontext">Supersedes HSEARCH-1852.<br><br>There was a {{FullTextQuery#setCriteriaQuery()}} in Search 5 that wasn't ported to Search 6, and we need to provide at least a similar level of functionnality, and if possible better.<br><br>Several identified use cases for {{setCriteriaQuery}} so far:<br><br># Setting loading options, such as forcing to load an association eagerly even though it's configured as lazy.<br># Filter the hits of each "page" of the search results using WHERE clauses in the SQL query used to load the results. This is easy, but will potentially lead to empty pages before the end of the results if all the hits of that page were filtered out, even if it wasn't the last page.<br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"># [new use case, not implemented in Search 5] Fully combine the results of a search query and a database query, avoiding any gap in the "pages" of the search results. This would be ideal, but it's close to impossible to implement efficiently except in some edge cases.</span> <span class="diffcontext"><br></span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br>We should probably not try to address</span> <span class="diffaddedchars" style="background-color:#ddfade;">This ticket is about</span> <span class="diffcontext"> #</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">3 for now: it will be rather complex to implement and test correctly, and very complex to optimize</span> <span class="diffaddedchars" style="background-color:#ddfade;">1</span> <span class="diffcontext">.</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br><br>Note that</span> <span class="diffcontext"> HSEARCH-</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;">1032 addresses similar use cases, but for mass indexing</span> <span class="diffaddedchars" style="background-color:#ddfade;">3630 will address #2 later</span> <span class="diffcontext">.<br><br>API-wise, we would allow users to provide some sort of "criteria", very much as described in HSEARCH-1852. Here is an example using the updated Search 6 API:<br><br>{code}<br>SearchResult<Book> result = searchSession.search( Book.class, Video.class )<br> .loading( Book.class, f -> /* configure stuff, such as association fetching</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"> or WHERE clauses</span> <span class="diffcontext"> */ )<br> // Use defaults for Video.class<br> .predicate( f -> f.match().onField( "title" )<br> .matching( "robot" ) )<br> .fetch();<br>{code}<br><br>Some caveats:<br><br>* Should the configuration apply exclusively to the referenced type, or to that type and every subtype?<br>* The fetch options could be implemented using the "fetch graph"/"load graph" feature from ORM, but I remember hearing from Steve himself that it had some serious limitations... Let's check that before we go that way. Maybe it was just the JPA APIs that were limited?</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"><br>* Be careful of interactions with the cache lookup strategy introduced in HSEARCH-3349. If the user defines WHERE clauses, the cache lookups must not be performed, because they could end up bypassing the WHERE clauses.</span> </td>
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