org.rvpf.store.server

Interface StoreCursor.Responder

All Known Implementing Classes:

Responder, Responder, Responder

Enclosing class:

StoreCursor

public static interface StoreCursor.Responder

Cursor responder.

A cursor acts as a 'middle-man' between a store server query processing loop and a store server supplied class implementing this interface.

Method Summary

Modifier and Type	Method and Description
long	count() Returns the count of values that would satisfy the query.
int	limit() Returns a limit on the number of values allowed by the backend.
Optional<? extends PointValue>	next() Returns the next point value.
void	reset(Optional<StoreCursor> storeCursor) Resets this responder.

Method Detail

count

@CheckReturnValue
long count()

Returns the count of values that would satisfy the query.

Returns:

The count.

limit

@CheckReturnValue
int limit()

Returns a limit on the number of values allowed by the backend.

Returns:

The limit.

next

@Nonnull
 @CheckReturnValue
Optional<? extends PointValue> next()

Returns the next point value.

Returns:

The next point value (empty when done).

reset

void reset(@Nonnull
           Optional<StoreCursor> storeCursor)

Resets this responder.

The responder should free resources reserved by a previous store query. If the store cursor parameter is not empty, it should prepare for calls to its next() method.

Parameters:

storeCursor - The controlling store cursor (may be empty).