[infinispan-issues] [JBoss JIRA] (ISPN-10862) SpringCache unwrapping NullValue singleton fails with Java Serialization

[Ryan Emerson (Jira)]

Ryan Emerson created ISPN-10862:
-----------------------------------

             Summary: SpringCache unwrapping NullValue singleton fails with Java Serialization
                 Key: ISPN-10862
                 URL: https://issues.jboss.org/browse/ISPN-10862
             Project: Infinispan
          Issue Type: Bug
          Components: Spring Integration
    Affects Versions: 10.0.0.Final
            Reporter: Ryan Emerson
            Assignee: Ryan Emerson


Our spring integration makes use of the {{NullValue.NULL}} singleton when wrapping null values, however the singleton semantics are not respected when Java Serialization is used as this was previously enforced by a {{Externalizer}} implementation.

Therefore, the NullValue wrapper is never unwrapped.

.SpringCache
   private ValueWrapper wrap(Object value) {
      if (value == null) {
         return null;
      }
      if (value == NullValue.NULL) {
         return NullValue.NULL;
      }
      return new SimpleValueWrapper(value);
   }

   private <T> T unwrapNull(Object value) {
      if (value == NullValue.NULL) {
         return null;
      }
      return (T) value;
   }
{code}




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