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https://issues.apache.org/jira/browse/JDO-751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15315498#comment-15315498
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Tilmann Zäschke commented on JDO-751:
-------------------------------------
As mentioned in the telecon, I found that the query {{"!(optionalPC != null)"}}
(where optionalPC is a field of type {{Optional<PC>}}) causes an SQL error:
{{java.sql.SQLSyntaxErrorException: Syntax error: Encountered "NOT" at line 1,
column 185.}}
The generated query looks as follows:
{{SELECT 'org.apache.jdo.tck.pc.query.OptionalSample' AS
NUCLEUS_TYPE,A0.ID,A0.OPTIONAL_DATE,A0.OPTIONAL_INTEGER,A0.OPTIONAL_STRING FROM
APPLICATIONIDENTITY0.OPTIONALSAMPLE A0 WHERE NOT NOT (A0.OPTIONAL_PC IS NULL)}}
This is presumably due to the {{NOT NOT}} near the end.
> Support for Java8 Optional
> --------------------------
>
> Key: JDO-751
> URL: https://issues.apache.org/jira/browse/JDO-751
> Project: JDO
> Issue Type: New Feature
> Components: specification, tck
> Reporter: Andy Jefferson
> Fix For: JDO 3.2
>
> Attachments: JDO-751-tck-patch-v2.txt
>
>
> java.util.Optional provides a feature that is available in other languages.
> Since JDO 3.2 will be for Java8+ then it makes sense to add support for this
> as a "supported persistable type"
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