I have a custom Scalar Valued function in SQL with the below details:
I'm using Hibernate 5.4.6 to fetch some records from the database. I want to use the above function in the HQL (in the Where Clause), however currently facing issues.
Query<Device> query = session.createQuery("Select ud from Device ud where fn_WorkDays(ua.created, current_date())>2", Device.class);
After going through some posts, I understand that the custom function needs to be registered before using it, hence have created the below class:
public class MySQLServerDialect extends SQLServerDialect {
public MySQLServerDialect() {
super();
registerFunction("fn_WorkDays", new VarArgsSQLFunction(StandardBasicTypes.INTEGER, "fn_WorkDays(", ",", ")"));
}
}
Have updated the hibernate.cfg.xml with :
<property name="dialect">com.test.service.utils.MySQLServerDialect</property>
I dont seem to understand how the registerFunction should be done as im getting the below error: ERROR SqlExceptionHelper:142 - 'fn_WorkDays' is not a recognized function name.
Log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<!-- Console Appender -->
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout
pattern="%d{yyyy-MMM-dd HH:mm:ss a} [%t] %-5level %logger{36}:%L - %msg%n" />
</Console>
</Appenders>
<Loggers>
<!-- Log everything in hibernate -->
<Logger name="org.hibernate" level="debug" additivity="false">
<AppenderRef ref="Console" />
</Logger>
<!-- Log SQL statements -->
<Logger name="org.hibernate.SQL" level="debug" additivity="false">
<AppenderRef ref="Console" />
</Logger>
<!-- Log JDBC bind parameters -->
<Logger name="org.hibernate.type.descriptor.sql" level="trace" additivity="false">
<AppenderRef ref="Console" />
</Logger>
<!-- Log custom packages -->
<Logger name="com.test.service" level="debug" additivity="false">
<AppenderRef ref="Console" />
</Logger>
<Root level="error">
<AppenderRef ref="Console" />
</Root>
</Loggers>
</Configuration>
Any help to resolve the above will be greatly appreciated.
ERROR SqlExceptionHelper:142 - 'fn_WorkDays' is not a recognized function name.
The error already says what is wrong, the function does not exist in the database.
Try this:
registerFunction("fn_WorkDays", new VarArgsSQLFunction(StandardBasicTypes.INTEGER, "dbo.fn_WorkDays(", ",", ")"));