I have a superclass and two subclasses. I want to write query that extracts records of a specific class from a common table. (I use the single table mapping strategy).
My request looks like this:
@Query("SELECT s FROM AbstractConcentration s WHERE type(s) = :book")
AbstractConcentration findSingle(@Param("book") Class book);
And now the exception is:
Caused by: java.lang.IndexOutOfBoundsException: Index: 0
at java.base/java.util.Collections$EmptyList.get(Collections.java:4483)
at org.springframework.data.repository.query.Parameter.isDynamicProjectionParameter(Parameter.java:209)
at org.springframework.data.repository.query.Parameter.<init>(Parameter.java:63)
at org.springframework.data.jpa.repository.query.JpaParameters$JpaParameter.<init>(JpaParameters.java:88)
at org.springframework.data.jpa.repository.query.JpaParameters.createParameter(JpaParameters.java:58)
at org.springframework.data.jpa.repository.query.JpaParameters.createParameter(JpaParameters.java:37)
at org.springframework.data.repository.query.Parameters.<init>(Parameters.java:76)
at org.springframework.data.jpa.repository.query.JpaParameters.<init>(JpaParameters.java:45)
at org.springframework.data.jpa.repository.query.JpaQueryMethod.createParameters(JpaQueryMethod.java:363)
at org.springframework.data.jpa.repository.query.JpaQueryMethod.createParameters(JpaQueryMethod.java:58)
at org.springframework.data.repository.query.QueryMethod.<init>(QueryMethod.java:80)
at org.springframework.data.jpa.repository.query.JpaQueryMethod.<init>(JpaQueryMethod.java:95)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:79)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lookupQuery(RepositoryFactorySupport.java:553)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(RepositoryFactorySupport.java:546)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
at java.base/java.util.Collections$UnmodifiableCollection$1.forEachRemaining(Collections.java:1054)
at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.mapMethodsToQuery(RepositoryFactorySupport.java:548)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$new$0(RepositoryFactorySupport.java:538)
at java.base/java.util.Optional.map(Optional.java:265)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:538)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:317)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$3(RepositoryFactoryBeanSupport.java:286)
at org.springframework.data.util.Lazy.getNullable(Lazy.java:141)
at org.springframework.data.util.Lazy.get(Lazy.java:63)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:289)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:102)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1758)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1695)
... 22 more
How can I solve this?
Please check the Spring Data Commons version (artifact identifier spring-data-commons) your project is using. Support for binding query method parameters of type Class to queries was only introduced in Spring Data Commons 2.7.8 and 3.0.2.