Getting java.lang.String cannot be cast to java.lang.Long exception

[himanshumps]

I am getting this exception (java.lang.String cannot be cast to java.lang.Long) when I have the version field declared as String and annotated with org.springframework.data.annotation.Version

@Version
private String version;

Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Long
02:20:35,571 INFO [stdout] (membershipChangeScheduler_Worker-2) at org.springframework.data.couchbase.repository.support.SimpleCouchbaseRepository.save(SimpleCouchbaseRepository.java:82) ~[spring-data-couchbase-4.4.0.jar:4.4.0]

The way the version field is being type casted has changed from spring-data-couchbase 3.2.x to 4.4.x in the save method (and probably other places as well which I might not be aware of)

4.4.x series: spring-data-couchbase/src/main/java/org/springframework/data/couchbase/repository/support/SimpleCouchbaseRepository.java at 149473cf83b48de6225b1f33cfd92a724da90a51 · spring-projects/spring-data-couchbase · GitHub

3.2.x series: spring-data-couchbase/src/main/java/org/springframework/data/couchbase/core/CouchbaseTemplate.java at 2efdf39ede45c72dca2f3472b5b23a7723fe87a2 · spring-projects/spring-data-couchbase · GitHub

Is there something we can do to help us migrate from 3.x to 4.x by avoiding this error.

[mikereiche]

I can look into fixing this in 5.x. Really, you should be migrating to 5.x if possible as it is the latest.

Is there something we can do to help us migrate from 3.x to 4.x by avoiding this error.

You can change String version to Long version