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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-9842" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-eaa7dc9d-af90-4fe4-831d-9c3a1212306b" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9842" style="color: #3b73af; text-decoration: none">HHH-9842</a>
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Issue Type:
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Affects Versions:
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4.3.10, 4.3.9, 4.3.8
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Unassigned
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Attachments:
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spring-jpa-hibernate.zip
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Components:
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hibernate-core
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Created:
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03/Jun/2015 03:45 AM
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Any OS
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Priority:
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="manishinjava" id="email_manishinjava" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=manishinjava" style="color:#6c797f;; color: #3b73af; text-decoration: none">Manish</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The ANSI SQL <tt>TRIM</tt> function is defined as:</p>
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TRIM([LEADING | TRAILING | BOTH] [<span class="code-object" style="color: #910091">char</span>] FROM [expression])
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">However, the first three arguments to the function are optional. Therefore, all the following calls to this function are valid:</p>
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TRIM( ' A sample text message. ')
TRIM(LEADING FROM ' A sample text message. ')
TRIM(TRAILING FROM ' A sample text message. ')
TRIM(BOTH FROM ' A sample text message. ')
TRIM(LEADING ' ' FROM ' A sample text message. ')
TRIM(TRAILING ' FROM ' A sample text message. ')
TRIM(BOTH ' ' FROM ' A sample text message. ')
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">However, any time this function is called from HQL with less than the maximum allowed of 4 parameters, the following warning message is seen in the logs, generated from the class <tt>org.hibernate.dialect.function.TemplateRenderer</tt>:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
HHH000174: Function template anticipated 4 arguments, but <n> arguments encountered
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">For example, the following Spring Data JPA repository method (which generates an HQL query) leads to this error:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">interface</span> TopicRepository <span class="code-keyword" style="color: #000091">extends</span> JpaRepository<Topic, <span class="code-object" style="color: #910091">Long</span>> {
@Query(<span class="code-quote" style="color: #009100">"SELECT topic FROM Topic topic WHERE TRIM(topic.name) = TRIM(?1)"</span>)
Topic findByName(<span class="code-object" style="color: #910091">String</span> name);
}
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This warning message has no impact on the actual execution of the code, which works as expected. However, <tt>WARN</tt> log level seems excessive for this case. The following portion of the code generates the warning:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">String</span> render(List args, SessionFactoryImplementor factory) {
<span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">int</span> numberOfArguments = args.size();
<span class="code-keyword" style="color: #000091">if</span> ( getAnticipatedNumberOfArguments() > 0 && numberOfArguments != getAnticipatedNumberOfArguments() ) {
LOG.missingArguments( getAnticipatedNumberOfArguments(), numberOfArguments );
}
...
}
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">At the very least, the severity level for this message should be changed to <tt>INFO</tt>. A proper check should know the minimum and maximum number of mandatory arguments allowed for the SQL function and compare the supplied number of arguments with this range. If the number of arguments is outside this range, the method must halt the operation by throwing an exception, instead of just logging a message and continuing.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Have attached a Maven project as a sample. Just run the test cases to see the aforementioned warning message being displayed.</p>
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