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public interface HistoricalIndexLookupStrategy
Strategy for use in poll-based joins to reduce a cached result set (represented by EventTable
), in
which the cache result set may have been indexed, to fewer rows following the join-criteria in a where clause.
Method Summary | |
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Iterator<EventBean> |
lookup(EventBean lookupEvent,
EventTable index)
Look up into the index, potentially using some of the properties in the lookup event, returning a partial or full result in respect to the index. |
Method Detail |
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Iterator<EventBean> lookup(EventBean lookupEvent, EventTable index)
lookupEvent
- provides properties to use as key values for indexesindex
- is the table providing the cache result set, potentially indexed by index fields
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