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Oracle® Coherence Java API Reference Release 3.6.0.0 E15725-01 |
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public interface IndexAwareFilter
IndexAwareFilter is an extension to the EntryFilter interface that allows a filter to use a Map index to fully or partially evaluate itself.
Method Summary | |
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Filter |
applyIndex(Map mapIndexes, Set setKeys) Filter remaining keys using a Map of available indexes. |
int |
calculateEffectiveness(Map mapIndexes, Set setKeys) Given a Map of available indexes, determine if this IndexAwareFilter can use any of the indexes to assist in its processing, and if so, determine how effective the use of that index would be. |
Methods inherited from interface com.tangosol.util.filter.EntryFilter |
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evaluateEntry |
Methods inherited from interface com.tangosol.util.Filter |
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evaluate |
Method Detail |
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int calculateEffectiveness(Map mapIndexes, Set setKeys)
mapIndexes
- the available MapIndex
objects keyed by the related ValueExtractor; read-onlysetKeys
- the set of keys that will be filtered; read-onlyFilter applyIndex(Map mapIndexes, Set setKeys)
EntryFilter
) that can complete the task using an iterating implementation. If, on the other hand, the filter does fully evaluate the remaining keys using just the index information, then it should return null to indicate that no further filtering is necessary.mapIndexes
- the available MapIndex
objects keyed by the related ValueExtractor; read-onlysetKeys
- the mutable set of keys that remain to be filteredFilter
object (which may be an EntryFilter
) that can be used to process the remaining keys, or null if no additional filter processing is necessary
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Oracle® Coherence Java API Reference Release 3.6.0.0 E15725-01 |
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