Support for typed caches with EhCache 3.0 [SPR-14384]

[spring-projects-issues]

Sebastian Audet opened SPR-14384 and commented

There is incomplete support for the EhCache JCache solution.

If you create a CacheManager with typed key/value pairs (pass in the key class and the value class), the spring JCacheManager will fail to instantiate this cache.

The solution is to add support for a custom class map for value pairs.

I have a working patch, will submit for review later.

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Affects: 4.3 GA

Issue Links:

• Compatibility with JCache 1.1 [SPR-13574] #18150 Compatibility with JCache 1.1

[spring-projects-issues]

Stéphane Nicoll commented

4.3.1 is due quite soon so I'd appreciate a more complete description of the problem. You surely have a cache configuration and a stacktrace to share. Thanks!

[spring-projects-issues]

Sebastian Audet commented

Yup, probably won't share till later this evening though, @ work atm.

[spring-projects-issues]

Stéphane Nicoll commented

Sebastian Audet please update the description with your configuration, your method annotation and the stacktrace. Obviously, a sample that reproduces the issue would be much better.

[spring-projects-issues]

Louis Jacomet commented

I believe your issue comes from multiple factors:

• Spring Caching does not have support for typed caches
• JCache mandates that CacheManager.getCache(String name) throws when a cache has been configured with a key or value type that is different than Object
• JCache lacks an API for cache type discovery although there is the JMX workaround discussed in that issue.

Given all of that, when using Ehcache 3 with the Spring Cache / JCache support, you must use untyped caches and there is not much Spring could do to improve the situation.

[spring-projects-issues]

Stéphane Nicoll commented

Sebastian Audet some feedback on why you've created this issue in the first place would be very helpful.

[spring-projects-issues]

Stéphane Nicoll commented

Given the lack of answer, I am flagging this one as pending for closure. I'll make sure to update the doc about typed cache in any case.