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https://issues.apache.org/jira/browse/CAY-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13584131#comment-13584131
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Dzmitry Kazimirchyk commented on CAY-1799:
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I think what we need here is to make PatternMatchNode.pattern and
PatternMatchNode.patternCompiled transient. Server will recompile expression's
pattern again if it will need to.
> ROP: Server can't deserialize LIKE expression with pattern already compiled
> ---------------------------------------------------------------------------
>
> Key: CAY-1799
> URL: https://issues.apache.org/jira/browse/CAY-1799
> Project: Cayenne
> Issue Type: Bug
> Components: ROP
> Affects Versions: 3.1B2
> Reporter: Dzmitry Kazimirchyk
>
> When query qualifier contains LIKE expression with pattern already
> precompiled (for instance expression.filterObjects() was used before
> performing query) hessian deserializer on server side will throw following
> exception:
> com.caucho.hessian.io.HessianFieldException:
> org.apache.cayenne.exp.parser.PatternMatchNode.pattern:
> 'java.util.regex.Pattern' could not be instantiated
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