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https://issues.apache.org/jira/browse/STANBOL-336?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rupert Westenthaler reopened STANBOL-336:
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sorry marked wrong issue as resolved ... reopening
> Improve Fetching of Entity Information during the enhancement process
> ---------------------------------------------------------------------
>
> Key: STANBOL-336
> URL: https://issues.apache.org/jira/browse/STANBOL-336
> Project: Stanbol
> Issue Type: Improvement
> Components: Enhancer
> Reporter: Rupert Westenthaler
> Assignee: Rupert Westenthaler
>
> Short overview about the current Situation:
> Previously the CachingDereferncingEngine was used do dereference information
> of Entities referenced in enhancement results. This engine loaded Entity data
> directly by using there IDs and stored the data in a Clerezza Graph. It was
> introduced before the Entityhub was implemented and was never updated to use
> the Entityhub.
> STANBOL-333 removed the CachingDereferncingEngine and added support to
> dereference Entities via the Entityhub directly to the
> NamedEntityTaggingEngine.
> However the removal of the CachingDereferncingEngine had the side effect that
> currently no other engine supports this feature. Engines must now support the
> fetching of entity data otherwise such data can no longer be provided.
> In cases where multiple Engines support this features users would need to
> change the configuration for several engines in order to probably
> active/deactivate this feature. Activation/Deactivation for single requests
> would not be possible.
> The proposal how to deal with fetching of entity information in future:
> * Move the configuration for the default value to enable/disable
> dereferencing of Entity information to a central component (probably as a
> property of the EnhancerWebFragment)
> * Add a possibility that allows users to override the default value for
> specific requests. This could use an additional parameter or also a HTTP
> header.
> * Store the entity-dereference-state within the metadata of the Content-Item.
> * If the entity-dereference-state is set to true EnhancementEngines MAY add
> entity information to the enhancement graph. This is especially useful if an
> engine does already fetch the required entity information during the
> enhancement process.
> * To allow users to also fetch entity information that are not added during
> the enhancement process we might want to reintroduce a DereferenceingEngine
> that can dereference missing Entities. This engine MUST BE able to use the
> Entityhub with the option to also dereference Entities via there URI if they
> are not available via the Entityhub.
> WDYT
> Rupert
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