== six pieces of code carrying @Transactional that are not transactional ==

Row 0 is the control: the SAME annotated method, reached through the proxy.

  {
      "0-control-through-the-proxy": "through the proxy: actualTransactionActive=true",
      "1-self-invocation": "self-invocation: actualTransactionActive=false",
      "2-private-method": "private method: actualTransactionActive=false",
      "3-checked-exception": {
          "threw": "Exception",
          "rowSurvived": true,
          "verdict": "COMMITTED despite the exception"
      },
      "4-swallowed-exception": {
          "rowSurvived": true,
          "verdict": "COMMITTED -- the exception never reached the interceptor"
      },
      "5-called-from-post-construct": {
          "transactionActiveDuringPostConstruct": false
      },
      "6-created-with-new": "created with new: actualTransactionActive=false"
  }

Reading it:

  0  control            actualTransactionActive=true. The mechanism works.
  1  self-invocation    entryPoint() is not annotated and calls this.annotated...(),
                        so the proxy is never involved. Same class, same annotation,
                        no transaction.
  2  private method     a CGLIB proxy advises by overriding, and private methods
                        cannot be overridden. Legal Java, no effect.
  3  checked exception  the default rollback rule is RuntimeException or Error. A
                        checked exception propagates AND the transaction commits.
                        Fix: @Transactional(rollbackFor = Exception.class).
  4  swallowed          nothing propagates, so the interceptor sees a normal return
                        and commits. The write survives the failure it 'handled'.
  5  @PostConstruct     the proxy does not exist yet during initialisation.
  6  new                no container, no proxy, no transaction.

Note what rows 3 and 4 have in common: the row is still there afterwards. These two
do not merely fail to start a transaction -- they start one and COMMIT work that the
code was trying to abandon.