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https://issues.apache.org/jira/browse/OAK-36?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13235462#comment-13235462
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Thomas Mueller commented on OAK-36:
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+1
An implementation detail: Instead of complete query parsers, it might be easier
to implement converters (that convert a statement from one language to another
language). As a prove of concept, I have started to implemented such a
converter in org.apache.jackrabbit.oak.query.XPathToSQL2Converter. As such
converters don't necessarily need to rely on implementation classes, they can
be used both in oak-jcr or oak-core. This design also simplifies testing. But
whether a QueryParser implementation internally uses a converter or not is an
implementation detail, so the above interface is fine.
> Implement a query parser
> ------------------------
>
> Key: OAK-36
> URL: https://issues.apache.org/jira/browse/OAK-36
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: core
> Reporter: Michael Dürig
>
> Implement a query parser and decide on a versatile AST representation which
> works with all query languages and which is extensible to future query
> languages.
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