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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=eyJpIjoiYWYwY2U4YjQwOWY0NDRiMGFlNzA5ODUxZmE5ODk3M2QiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate Search</a> / <a href="https://hibernate.atlassian.net/browse/HSEARCH-3522?atlOrigin=eyJpIjoiYWYwY2U4YjQwOWY0NDRiMGFlNzA5ODUxZmE5ODk3M2QiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-ccd12c81-dcf5-4092-b0c6-cc0667bd709b" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3522?atlOrigin=eyJpIjoiYWYwY2U4YjQwOWY0NDRiMGFlNzA5ODUxZmE5ODk3M2QiLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HSEARCH-3522</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"> <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"> <span class="diffcontext">While I was working on HSEARCH-3498, I noticed something quite interesting: this change effectively makes all predicates very similar until we call {{.matching}} or {{from}} or equivalent. So in theory we could go one step further and make the syntax even more concise by removing the initial call to {{.match()}}, {{.phrase()}}, etc.<br><br>E.g. we could move from this:<br><br>{code}<br>f -> f.matchAll()<br>f -> f.match().onField( "field1" ).boostedTo( 2.0f ).orField( "field2" ).matching( value )<br>f -> f.match().onField( "field1" ).from( value1 ).to( value2 )<br>f -> f.phrase().onField( "field1" ).matching( phrase ).slop( 1 )<br>f -> f.simpleQueryString().onField( "field1" ).matching( queryString ).withAndAsDefaultOperator()<br>f -> f.spatial().within().onField( "field1" ).boundingBox( ... )<br>{code}<br><br>To this:<br><br>{code}<br>f -> f.matchAll() // No change<br>f -> f.onField( "field1" ).boostedTo( 2.0f ).orField( "field2" ).match( value )<br>f -> f.onField( "field1" ).from( value1 ).to( value2 )<br>f -> f.onField( "field1" ).phrase( phrase ).slop( 1 )<br>f -> f.onField( "field1" ).simpleQueryString( queryString ).withAndAsDefaultOperator()<br>f -> f.onField( "field1" ).withinBoundingBox( ... )<br>{code}<br><br>I did not go this far in</span> <span class="diffremovedchars" style="background-color: #ffe7e7; text-decoration:line-through;"> this</span> <span class="diffaddedchars" style="background-color:#ddfade;"> the</span> <span class="diffcontext"> PR</span> <span class="diffaddedchars" style="background-color:#ddfade;"> for HSEARCH-3498</span> <span class="diffcontext">, but I think we could easily do it in a later PR. Or even in a 6.1 with some deprecations, but obviously I'd rather avoid that.<br><br>I can see several advantages:<br><br>1. We have one less method call to build a predicate, and in most cases we save some characters.<br>2. It's more similar to the sort and projections DSLs, where we do not have this preliminary "predicate type" call and we pick a field right away: {{.field("fieldName", String.class)}} for projections, {{.byField( "fieldName" )}} for sorts.<br>3. It's more "object-oriented" in the sense that the target of the predicate (the field) appears before the operation. An interesting side-effect: we could imagine to use a similar syntax in a DSL based on a static metamodel, like in [QueryDSL|http://www.querydsl.com/static/querydsl/latest/reference/html/ch02.html#d0e230].<br><br>On the dark side, of course, we're once again moving away from the Search 5 APIs. And we're taking some risk, too: if we end up needing field-scoped parameters that are specific to one predicate type, we will need to split the APIs once again...</span> </td>
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