ilgrosso commented on PR #220:
URL: https://github.com/apache/openjpa/pull/220#issuecomment-6364412726
It looks like one reason of a few test failures is that the following test
code:
```java
User rossini = userDAO.findByUsername("rossini").orElseThrow();
PlainAttr loginDate = rossini.getPlainAttr("loginDate").orElseThrow();
loginDate.getValues().getFirst().setDateValue(FormatUtils.parseDate(LOGIN_DATE_VALUE,
"yyyy-MM-dd"));
entityManager.merge(rossini);
```
does not generate any `UPDATE` statement while this code:
```java
User rossini = userDAO.findByUsername("rossini").orElseThrow();
PlainAttr loginDate = rossini.getPlainAttr("loginDate").orElseThrow();
rossini.remove(loginDate);
loginDate.getValues().getFirst().setDateValue(FormatUtils.parseDate(LOGIN_DATE_VALUE,
"yyyy-MM-dd"));
rossini.add(loginDate);
entityManager.merge(rossini);
```
does.
In the first snippet, the converted `List<PlainAttr>` is read
(`getPlainAttr()` does `getPlainAttrs().filter(...).findFirst()` internally)
and one of its element is modified.
In the second snippet, the converted `List<PlainAttr>` is actually modified.
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