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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=eyJpIjoiNDRlMTc5Yzc1MGIyNGQ3MjkxZDIwYWZlOTQxZWFmYzciLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Hibernate Search</a> / <a href="https://hibernate.atlassian.net/browse/HSEARCH-3498?atlOrigin=eyJpIjoiNDRlMTc5Yzc1MGIyNGQ3MjkxZDIwYWZlOTQxZWFmYzciLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-5016980f-6d62-4dd9-8130-e8f7100585bd" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HSEARCH-3498?atlOrigin=eyJpIjoiNDRlMTc5Yzc1MGIyNGQ3MjkxZDIwYWZlOTQxZWFmYzciLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">HSEARCH-3498</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-3498?atlOrigin=eyJpIjoiNDRlMTc5Yzc1MGIyNGQ3MjkxZDIwYWZlOTQxZWFmYzciLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Move optional predicate DSL parameters to the terminal contexts</a> </span> </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">Issue Type:</th>
<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-5016980f-6d62-4dd9-8130-e8f7100585bd" height="16" width="16" border="0" align="absmiddle" alt="Improvement" style="vertical-align: text-bottom"> Improvement </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">Affects 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.Alpha2 </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">Assignee:</th>
<td style="padding: 0; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </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"> backend-elasticsearch, backend-lucene, engine </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"> 22/Feb/2019 01:34 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.Alpha-backlog </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-static-major-9373a0fa-6682-479c-96ab-7cfd2ca56515" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom"> Major </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">For example, the current syntax looks 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">
.match().fuzzy().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( value )
.match().withConstantScore().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( value )
.match().boostedTo( 2.0f ).onField( <span class="code-quote" style="color: #009100">"field1"</span> ).boostedTo( 2.0f ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( value ) <span class="code-comment" style="color: #808080">// results in a boost of 4 <span class="code-keyword" style="color: #000091; color: #808080">for</span> field1, 2 <span class="code-keyword" style="color: #000091; color: #808080">for</span> field2, but one might think it will be 2 <span class="code-keyword" style="color: #000091; color: #808080">for</span> each?
</span>.phrase().slop( 1 ).onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( phrase )
.simpleQueryString().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).withAndAsDefaultOperator().matching( queryString )
</pre>
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">After this change, it would look 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">
.match().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( value ).fuzzy()
.match().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( value ).withConstantScore()
.match().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).boostedTo( 2.0f ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( value ).boostedTo( 2.0f ) <span class="code-comment" style="color: #808080">// It hardly makes sense to override the boost at the end, so maybe there's a lesser risk <span class="code-keyword" style="color: #000091; color: #808080">for</span> the syntax to be misunderstood?
</span>.phrase().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( phrase ).slop( 1 )
.simpleQueryString().onField( <span class="code-quote" style="color: #009100">"field1"</span> ).orField( <span class="code-quote" style="color: #009100">"field2"</span> ).matching( queryString ).withAndAsDefaultOperator()
</pre>
</div>
</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Pros:</p>
<ol>
<li>More consistent: currently, some options are specified before the field path, some after. After this change, every option comes at the end. Note it's also more consistent with the projection/sort DSL, where options always come <b>after</b> we specify the field path.</li>
<li>Easier to read: the main information is specified first (type of predicate, fields, value to match), and the details come later</li>
<li>Clearer errors: some options (for example <tt>fuzzy</tt>) are supposed to throw an exception when applied to a field that doesn't support it (an integer field, for example). With the new syntax, we would be able to throw the exception when the option is set, because we know of all the targeted fields at that point. Currently we don't, so we throw the exception later, when <tt>matching</tt> is called, which is slightly confusing.</li>
</ol> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0">Cons: </p>
<ol>
<li>Yet another syntax change. But we're hardly similar to Search 5 anymore, so one more syntax change is not the end of the world...</li>
</ol> </td>
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