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https://issues.apache.org/jira/browse/FLINK-13252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17329493#comment-17329493
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Flink Jira Bot commented on FLINK-13252:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Common CachedLookupFunction for All connector
> ---------------------------------------------
>
> Key: FLINK-13252
> URL: https://issues.apache.org/jira/browse/FLINK-13252
> Project: Flink
> Issue Type: New Feature
> Components: Connectors / Common, Table SQL / API
> Reporter: Chance Li
> Assignee: Chance Li
> Priority: Minor
> Labels: pull-request-available, stale-assigned, stale-minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> shortly, it's a decorator pattern:
> # A CachedLookupFunction extends TableFunction<Row>
> # when needing the cache feature, the only thing is to construct this
> CachedLookupFunction with the real LookupFunction's instance. so it's can be
> used by any connector.
> # CachedLookupFunction will send the result directly if data has been cached
> or, to invoke the real LookupFunction to get data and send it after this data
> has been cached.
> # will have more cache strategies such as All.
> should add a new module called flink-connector-common.
> we also can provide a common Async LookupFunction using this pattern instead
> of too much implementation.
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