org.apache.ignite.internal.processors.cache.query

Interface CacheQueryFuture<T>

All Superinterfaces:

AutoCloseable, IgniteInternalFuture<Collection<T>>

All Known Implementing Classes:

GridCacheDistributedFieldsQueryFuture, GridCacheDistributedQueryFuture, GridCacheLocalFieldsQueryFuture, GridCacheLocalQueryFuture, GridCacheQueryErrorFuture, GridCacheQueryFutureAdapter

public interface CacheQueryFuture<T>
extends IgniteInternalFuture<Collection<T>>, AutoCloseable

Cache query future returned by query execution. Refer to CacheQuery documentation for more information.

Method Summary

Modifier and Type	Method and Description
boolean	cancel() Cancels this query future and stop receiving any further results for the query associated with this future.
boolean	isDone() Checks if all data is fetched by the query.
T	next() Returns next element from result set.

Methods inherited from interface org.apache.ignite.internal.IgniteInternalFuture

chain, chain, error, get, get, get, getUninterruptibly, isCancelled, listen, result

Methods inherited from interface java.lang.AutoCloseable

close

Method Detail

next

@Nullable
T next()
          throws IgniteCheckedException

Returns next element from result set.

This is a blocking call which will wait if there are no elements available immediately.

Returns:

Next fetched element or null if all the elements have been fetched.

Throws:

IgniteCheckedException - If failed.

isDone

boolean isDone()

Checks if all data is fetched by the query.

Specified by:

isDone in interface IgniteInternalFuture<Collection<T>>

Returns:

True if all data is fetched, false otherwise.

cancel

boolean cancel()
        throws IgniteCheckedException

Cancels this query future and stop receiving any further results for the query associated with this future.

Specified by:

cancel in interface IgniteInternalFuture<Collection<T>>

Returns:

True if future was canceled (i.e. was not finished prior to this call).

Throws:

IgniteCheckedException - If cancellation failed.