io.deephaven.util.datastructures.cache.ReverseOffsetLookupCache<VALUE_TYPE,EXTRA_INPUT_TYPE>

public class ReverseOffsetLookupCache<VALUE_TYPE,EXTRA_INPUT_TYPE> extends Object implements ToIntFunction<VALUE_TYPE>

Caching data structure interface for caching Object to int (offset) mappings returned by an expensive, idempotent lookup function from int to Object.

Constructor Details
- ReverseOffsetLookupCache
  
  public ReverseOffsetLookupCache(@NotNull @NotNull OffsetLookup<VALUE_TYPE,EXTRA_INPUT_TYPE> lookupFunction)
Method Details
- ensurePopulated
  
  public void ensurePopulated(int highestIndexNeeded, @NotNull @NotNull Supplier<EXTRA_INPUT_TYPE> extraFactory, @Nullable @Nullable Consumer<EXTRA_INPUT_TYPE> extraCleanup)
  
  Ensure that the cache is populated for all indexes <= highestIndexNeeded.
  
  Parameters:
  
  highestIndexNeeded - The highest index needed for this operation
- applyAsInt
  
  public int applyAsInt(VALUE_TYPE value)
  
  Get the index of value in reverse lookup cache. Be sure to call ensurePopulated(int, Supplier, Consumer) for the appropriate index bound, first.
  
  Specified by:
  
  applyAsInt in interface ToIntFunction<VALUE_TYPE>
  
  Parameters:
  
  value - The value to look up
  
  Returns:
  
  The index of value in the cache, or NULL_INDEX (-1) if not found
- clear
  
  public void clear()
  
  Release all resources held by the cache.

Class ReverseOffsetLookupCache<VALUE_TYPE,EXTRA_INPUT_TYPE>

Constructor Summary