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https://issues.apache.org/jira/browse/LUCENE-4823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-4823:
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Description:
Currently there is no easy way to do a global "rescan/reload" of all of
Lucene's SPIs in the right order. In solr there is a long list of reload
instructions in the ResourceLoader. If somebody adds a new SPI type, you have
to add it there.
It would be good to java a central instance in oal.util that keeps track of all
NamedSPILoaders and AnalysisSPILoaders (in the order they were instantiated),
so you have one central entry point to trigger a reload.
This issue will introduce:
- A singleton that makes reloading possible. The singleton keeps weak refs to
all loaders (of any kind) in the order they were created.
- NamedSPILoader and AnalysisSPILoader cleanup (unfortunately we need both
instances, as they differ in the internals (one keeps classes, the other one
instances). Both should implement a "reloadable" interface.
was:
Currently there is no easy way to do a global "rescan/reload" of all of
Lucene's SPIs in the right order. In solr there is a long list of reload
instructions in the ResourceLoader. If somebody adds a new SPI type, you have
to add it there.
It would be good to java a central instance in oal.util that keeps track of all
NamedSPILoaders and AnalysisSPILoaders (in the order they were instantiated),
so you have one central entry point to trigger a reload.
This issue will introduce:
- A singleton that makes reloading possible. The singleton keeps weak refs to
all loaders (of any kind) in the order they were created.
- NamedSPILoader and AnalysisSPILoader (unfortunately we need both instances,
as they differ in the internals (one keeps classes, the other one instances).
Both should implement a "reloadable" interface.
> Add a separate "registration" singleton for Lucene's SPI, so there is only
> one central instance to request rescanning of classpath (e.g. from Solr's
> ResourceLoader)
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-4823
> URL: https://issues.apache.org/jira/browse/LUCENE-4823
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/other
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: 5.0, 4.3
>
>
> Currently there is no easy way to do a global "rescan/reload" of all of
> Lucene's SPIs in the right order. In solr there is a long list of reload
> instructions in the ResourceLoader. If somebody adds a new SPI type, you have
> to add it there.
> It would be good to java a central instance in oal.util that keeps track of
> all NamedSPILoaders and AnalysisSPILoaders (in the order they were
> instantiated), so you have one central entry point to trigger a reload.
> This issue will introduce:
> - A singleton that makes reloading possible. The singleton keeps weak refs to
> all loaders (of any kind) in the order they were created.
> - NamedSPILoader and AnalysisSPILoader cleanup (unfortunately we need both
> instances, as they differ in the internals (one keeps classes, the other one
> instances). Both should implement a "reloadable" interface.
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