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https://issues.apache.org/jira/browse/GROOVY-9636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17156331#comment-17156331
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Dmitriy Neretin commented on GROOVY-9636:
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Hello [~paulk],
If I understand your statement right: The solution is up to the dynamodb sdk
developers. Instead of the {{isSynthetic()}} call they have to check the
presence of the {{@Internal}} annotation?
> Inconsistent behaviour of isSynthetic between Groovy version 2.* and 3.*
> ------------------------------------------------------------------------
>
> Key: GROOVY-9636
> URL: https://issues.apache.org/jira/browse/GROOVY-9636
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 3.0.4
> Reporter: Dmitriy Neretin
> Priority: Major
>
> Following steps are needed to reproduce the issue:
> * Checkout [https://github.com/dimarzio/groovy_sandbox]
> * Current groovy dependency in the project build file is 3.0.4
> * Run the App class
> ** Which obtains a class literal, takes a getMetaClass method and executes
> isSynthetic() on it
> * isSynthetic() returns false, which is not right (at least my assumption!)
> and leads to the failed assertion
> * Now, change the groovy version in the build.gradle to 2.5.8
> * Run the App class again
> * isSynthetic() returns true, which is right, assertion will be passed
> The problem described above leads to problems in the reflection-based bean
> processors like in the AWS DynamoDB SDK. The processor for example recognizes
> getMetaClass as a DynamodDB table property and tries to convert it as a
> proper table property.
> But there are theoretically infinite amount of other problems.
> Java version: OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.7+10)
>
> Current workaround - Groovy version 2.* can be used.
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