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https://issues.apache.org/jira/browse/JDO-751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15154457#comment-15154457
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Craig L Russell commented on JDO-751:
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Having begun to work with JavaScript over the last few years, I appreciate how
they adapted the Java concept of null to the equality problem. If you have a
property foo and another property bar, you can ask if foo == bar and you get
true if both are null or both are not null and have the same "value". This is
what I propose for JDOQL if both foo and bar are Optional. True, it's not
strictly Java, but we already have made JDOQL just a bit friendlier than strict
Java.
> 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
>
> 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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