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https://issues.apache.org/jira/browse/JCR-1674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Dürig updated JCR-1674:
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Attachment: QueryNodeVisitor.patch
> Provide means for exception handling for QueryNodeVisitor implementations
> -------------------------------------------------------------------------
>
> Key: JCR-1674
> URL: https://issues.apache.org/jira/browse/JCR-1674
> Project: Jackrabbit
> Issue Type: Improvement
> Components: jackrabbit-spi-commons
> Reporter: Michael Dürig
> Priority: Minor
> Attachments: QueryNodeVisitor.patch
>
>
> Currently the methods of QueryNodeVisitor do not declare any exceptions. Even
> though the query tree might be syntactically correct, an implementation might
> reach a point where it cannot continue (i.e. if it does not support one of
> the optional query features). For such cases there are currently two
> solution: 1. throw an unchecked exception or 2. communicate the error state
> through the visitor using the data object passed along.
> While I don't like 2. it is still an option. For 1. I'm not sure if this is
> the right way to go. It might be better to actually throw a checked
> exception. I therefore created a patch which declares RepositoryException on
> all visit methods of QueryNodeVisitor. Although the necessary changes in
> classes using QueryNodeVisitor are trivial, there are quite many of them.
> Any opinions on checked exception with probably breaking (trivially) existing
> code vs. using not checked exceptions?
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