Translate `JpaSort.unsafe(…)` used with Specifications to order-by `Expression`

[icerockq]

spring boot 2.7.2

In these two cases I use the following expression: PageRequest.of(0, 10, JpaSort.unsafe("LENGTH(name)")) and my model has name property.

For exmaple if I using default method findAll(Specifiocation, Pageable), then I will get exception:
org.springframework.data.mapping.PropertyReferenceException: No property 'unsafe expression' found for type 'Entity'

But if I using method with @Query annotation then I will get success query.

[mp911de]

Care to attach the full stack trace?

[icerockq]

Sorry. Sure.

org.springframework.data.mapping.PropertyReferenceException: No property 'LENGTH(name)' found for type 'User'
	at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:91) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:438) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:414) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:367) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330) ~[na:na]
	at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:349) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:332) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.jpa.repository.query.QueryUtils.toJpaOrder(QueryUtils.java:726) ~[spring-data-jpa-2.7.15.jar:2.7.15]
	at org.springframework.data.jpa.repository.query.QueryUtils.toOrders(QueryUtils.java:679) ~[spring-data-jpa-2.7.15.jar:2.7.15]
	at org.springframework.data.jpa.repository.support.SimpleJpaRepository.getQuery(SimpleJpaRepository.java:817) ~[spring-data-jpa-2.7.15.jar:2.7.15]
	at org.springframework.data.jpa.repository.support.SimpleJpaRepository.getQuery(SimpleJpaRepository.java:774) ~[spring-data-jpa-2.7.15.jar:2.7.15]
	at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findAll(SimpleJpaRepository.java:515) ~[spring-data-jpa-2.7.15.jar:2.7.15]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
	at org.springframework.data.repository.core.support.RepositoryMethodInvoker$RepositoryFragmentMethodInvoker.lambda$new$0(RepositoryMethodInvoker.java:289) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:530) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:286) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:640) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:164) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:139) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:76) ~[spring-data-commons-2.7.15.jar:2.7.15]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.29.jar:5.3.29]
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.29.jar:5.3.29]
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.29.jar:5.3.29]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.29.jar:5.3.29]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:174) ~[spring-data-jpa-2.7.15.jar:2.7.15]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.29.jar:5.3.29]
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:241) ~[spring-aop-5.3.29.jar:5.3.29]
	at com.sun.proxy.$Proxy111.findAll(Unknown Source) ~[na:na]

[gregturn]

I was able to reproduce this on the 2.7.x branch as well as the main branch.